Camera Sensor

The ASI120MM Mini camera integrates the AR0130CS 1/3″ sensor (4.8 mm x 3.6 mm). It is a new model in the “mini”-series of cameras from ZWO. This camera has 1280 x 960 pixels with a pixel size of 3.75 μm x 3.75 μm. It provides 12-bit ADC and the QE peak is almost 80%.

Astrophotography Performance

The ASI120 mini-camera offers you very good performance for planetary imaging as well as for guiding. Low read noise, high dynamic range, AR protective window and much more are just some of the key characteristics that set it apart from the competition.

Astrophotography Performance

ASI120 mini camera offers you very good performance for planetary imaging and guiding. Low read noise, high dynamic range, AR protective window and much more.

High QE

Absolute QE Curve, we estimate the Peak Value is almost 80%.

120Mini VS 120MM-S

Compared with ASI120MM-S camera, 120mini have smaller outlook, lighter weight, and it can reach focus at same position with eyepiece.

USB2.0Port & ST4 Port

USB 2.0 Port: Mini camera has one USB2.0 type C port. Type C port is very popular in mobile phones, it will not care about positive side and negetive side of the adapter.

ST4 Port: Can connect mini camera direct connect to auto guide port of mount.

Smiling Face

The back of ASI mini camera is like a smiling face, its mouth is Type C USB port, which is widely used in mobile phones. And its nose is the ST4 port, for guiding. Every time, you use mini camera, there always will be a smiley face stay with you in the dark nights.

Focus like a eyepiece

ASI mini camera can focus at same position as eyepiece. You can focus with a eyepiece, and put ASI mini camera into 1.25″ holder.

Work with OAG

Mini camera is very suitable for OAG, it has much bigger focus range than normal ASI cameras. Never to worry about that guide camera can not focus with main camera at same time.

What is in the box?

ASI mini camera box includes all necessary cables, adapters, and manuals.

Product Description

ASI294MC Pro

The ASI294 is the first camera in the world equipped with the latest Sony sensor IMX294CJK.

DDR Memory Buffer

The ASI294MC Pro camera includes a 256MB DDR3 memory buffer to help improve data transfer reliability. Additionally, the use of a memory buffer minimizes amp-glow, which is caused by the slow transfer speeds when the camera is used with a USB 2.0 port.

DDR memory buffer is the main difference between ASI “Cool” and “Pro” cameras.

14bit ADC w/ 13 stops DR

The ASI294 has a 14bit ADC unit, allowing it to achieve 13 stops of dynamic range. This is an excellent characteristic for deep sky imaging, which is inherently high dynamic range. At 13 stops, the ASI294 has even more dynamic range than the ASI1600.

HCG Mode

HCG (high conversion gain) mode, which reduces read noise to even lower levels at higher gain without loss to dynamic range, is automatically enabled when the gain setting is 120 or higher. Read noise will drop under 2e-, while dynamic range will remain at 13 stops.

Full well Capacity

63700e full well, which is 3 times than ASI1600’s capacity. Even bright stars won’t saturate under long exposure.

This camera can achieve higher SNR(signal to noise ratio) with just one single exposure.

Reliable Mechanics

ASI294MC Pro has same mechanics as ASI1600 Pro. There are four screws that seal the sensor chamber. Our camera design has been extensively tested and is very stable.

Even when used in higher humidity environments, ASI294MC Pro will still work fine without dew problems.

High QE

The IMX294 sensor is a BSI (backside illuminated type) sensor, which has very high QE (quantum efficiency, which we estimate is over 75% peak).

Dark Current

The dark current of the ASI294 is slightly higher than the ASI1600, based on our test results.

Dark frame sample @ Highest dynamic range settings, 300s, -10°C, bin1. Please check the dark frame to make sure you fully know the performance.

ASI294MC Pro Dark Frame

USB 3.0 Port & USB2.0 HUB

USB 3.0 Port: Provide 5Gb bandwidth to make it possible for ASI294 Pro to run at 16 fps (14bit, normal mode) or 19 fps (10bit, high speed mode) at full resolution(11.7Mega).

Recommended cooler power supply: 12V @ 3-5A (or more) DC adapter (2.1×5.5mm, center pole positive). Also suitable: DC battery with 9-15V. Buy the power supply from Bintel too!

Using a battery 9-15V is also suitable for the cooler power supply.

USB 2.0 HUB: can connect with various accessories, such as filter wheel, guide camera and electronic focuser, so you can better manage your cables. The ASI294 Pro includes two short 0.5m USB 2.0 cables. The integrated USB 2.0 hub is powered by the external power source if you connect one.

Cooling System

The ASI294 Pro has a 2-stage TEC cooling system that enables deep cooling (35°C-40°C below ambient). The cooler requires an external power supply, which is not included with the camera. You may order a suitable power supply from Bintel here.

Connecting Drawing

1. M43-T2 adapter (optional)

2. EOS-T2 adapter (optional)

3. 2” Filter (optional)

4. 1.25” T-Mount

5. 1.25” Filter (optional)

6. M42-1.25” adapter

7. T2 extender 11mm

Mechanical Drawing

What is in the box?

ASI294 Pro box includes all necessary cables, adapters, and manuals.

Notice：Cooled cameras need a 12v power adapter, If you don’t have one, please click this link to buy a 12V power adapter. There are 4 different standards for the different country, please choose it carefully.

Drivers and Softwares:

The ZWO website is always updated with the most recent camera drivers as well as software for DSO and planetary imaging. Please make sure the most recent drivers and software from the ZWO website has been installed before you start shooting:

It is also recommended to read the manuals first before shooting.

Product review:

https://www.cloudynights.com/topic/591441-asi-new-camera-294-pro-beta-testing/page-11#entry8165708

Camera Technical Details

Cooling & Power

Environmental Conditions

Max FPS at Full Resolution

Additional resolutions are available in software and support custom resolution selection.

ZWO ASI533MC-Pro

ASI 533MC-P is the new One Shot Colour cameras from ZWO.

Sensor is the square back illuminated Sony ExMor IMX533 sensor.

Resolution is 3008 x 3008 with 3.76um pixels.

The sensor size is 11.31mm x 11.31mm for 9.07Mp.

Max FPS at Full Resolution is 20FPS.

Read Noise is very low at 1.0e to 3.83e

QE peak up to 80%

Full Well is 50Ke

Exposure Range is 32us – 2000s

ADC 14bit

Cooling to -40 ° ambient temperature.

256MB internal DDR3 memory

The ASI533MC PRO features SONY’s latest back illuminated IMX533 sensor, with a 1-inch square, 9.07MP sensor that is ideal for astronomical photography needs and can be considered as the latest iteration of the venerable ASI183MC Pro.

As you would expect this latest generation camera not only retains key features of the ASI183 series such as an attractive QE figure, high frame rate and along with other excellent characteristics of the ASI183 cameras, but also now includes new and improved features such as zero amp glow, extreme low read out noise (as low as 1.0e), 3.76 microns pixel size and an improved 2 stage TEC cooler giving enhanced cooling capabilities.

1” square sensor

The IMX533 is a 1-inch, 9MP CMOS image sensor in a square format with a 3.76 um pixel size, capable of producing frames at 20 frames/sec in 14bit mode.

Read out noise is as low as 1.0e which makes it comparable to SCMOS or EMCCD sensors and highly suitable for high definition, low noise imaging.

IMX533 backlit sensor

Sony’s back-illuminated CMOS image sensor improves sensitivity and noise reduction – the key factors to enhancing image quality, while radically realigning their fundamental pixel structure from front-illumination to back-illumination. It has retained the advantages of CMOS image sensors such as low power consumption and high-speed operation.

With a conventional front-illumination structure, the metal wiring and transistors on the surface of the silicon substrate that form the sensor’s light-sensitive area (photo-diode) impede photon gathering carried out by the on-chip lens. A back-illuminated structure minimizes the degradation of sensitivity to optical angle response, while also increasing the amount of light that enters each pixel due to the lack of obstacles such as metal wiring and transistors that have been moved to the reverse of the silicon substrate.
Sony has newly developed a unique photo-diode structure and on-chip lens optimized for back-illuminated structures, that achieves a higher sensitivity and a lower random noise without light by reducing noise, dark current and defect pixels compared to the conventional front-illuminated structure.

Camera Performance

Low read-out noise, high dynamic range.

ASI533MC Pro – ASI183MC Pro Comparision

New ZWO ASIAIR Mini features eMMC Storage, Dual band antenna, Stacking on phone, Power monitoring, DSO imaging, Planetary imaging, independent guiding, Automated imaging

The new ZWO ASIAIR Mini is more portable than ever, with a size no larger than half a hand, ASIAIR Mini is the most vest pocket sized member of the ASI AIR Series. It’s also the most cost effective one, yet the performance is hardly weakened compared to its predecessors, allowing you to capture the night sky with ease and fun.

Attach the ZWO ASIAIR Mini to your imaging setup, then you’re free to control your DSLR or ASI cameras with your phone or tablet via a wireless connection. Stay in the comfort of your tent, home, car, and other places to avoid hot summer or cold winter nights. No more problems with mosquitos.

One station design

ZWO ASIAIR Mini streamlines the start-to-finish process for you, including focusing, polar alignment, changing filters, auto guiding, autorun, and more. Even novice Astro images can begin their Astrophotography journey with this device. The multi-target feature is great for widefield photography.

ASIAIR Plus and ASIAIR Mini Comparison

Construction

The ZWO ASIAIR Mini is made with precision CNC machining from Aluminium which effectively prevents it from dust, dew. A truly durable device. The case has the constellations of Casseopia, Ursa Major and Ursa Minor laser etched on it.

ASIAIR is able to run on iOS ad Android devices. In order to get the best usage experience, we recommend you confirm whether your phones or tablets meet the requirements below or not first before you purchase the ASIAIR MINI

SKU: ZWO-ASIAIR-Mini

The NEW ZWO ASI 662MC One Shot Color Camera with High Sensitivity

The new ZWO ASI 662MC adopts the Sony IMX662 sensor, has a rolling shutter, a frame size of 1/2.8", and a pixel size of 2.9um, and has 2.07million pixels (1920 x 1080). In high-speed mode, the CMOS sensor can output 102.6 frames per second at full resolution and provide a low read noise level.

Large Full Well capacity, not easy to overexposure

The ZWO ASI 662MC adopts the Sony 662MC sensor with the latest technology. Compared to the previous generation of sensors, it has a very low readout noise and extremely large full well capacity which is 3 times larger than that of the IMX462MC. This helps effectively with overexposure issues and allows longer exposure s. In low light conditions, the camera performs excellently, capturing very clear images of celestial objects.

STARVIS 2

ZWO ASI 662MC adopts the latest Sony IMX662 sensor with advanced STARVIS 2 technology. Featuring zero amp glow, higher sensitivity to red and Near Infrared (NIR) light, 3 times the full well capacity. it can be regarded as an upgrade of the ASI462MC. Also, its dark current noise is several times lower than the ASI462MC.

USB3.0 and 256M DDR Memory

The camera is equipped with a USB 3.0 transmission interface and a built-in 256MB DDR cache to ensure stable and secure data transmission. Under long exposure, it effectively avoids frame dropping and greatly reduces the glow effect caused by slow reading speed.

No Amp Glow

ZWO ASI 662MC exhibits zero amp glow, no matter how long the exposure and how high the gain value is. Since it is implemented directly at the hardware level, it does not require software control.

300 Second exposure with ASI 462MC

300 Second exposure with ASI662MC

Quantum Efficiency

The QE curve and noise readout are very important parameters to measure the camera's performance. Higher QE and lower readout noise are necessary to improve the image signal-to-noise ratio.

Camera Curve low read noise, high dynamic range

Readout noise includes pixel noise, circuit noise, and ADC quantization noise. The lower the readout noise, the better. As can be seen, the readout noise of the ZWO ASI 662MC is very low compared to CCD camera. The built-in HCG mode can effectively reduce the readout noise at high gain and allow the camera to maintain the same high dynamic range as it does at low gain. When the gain is 252, the HCG mode is automatically tuned on and the dynamic range rises back to 12-bit.

What's in the box

ASI183MC Pro

Introducing the ASI183 camera series, the most sensitive cameras in ZWO history. Peak Q.E. of the mono sensor reaches 84%!

DDR Memory Buffer

The ASI183 Pro camera includes a 256MB DDR3 memory buffer to help improve data transfer reliability. Additionally, the use of a memory buffer minimizes amp-glow, which is caused by the slow transfer speeds when the camera is used with a USB 2.0 port.

Astrophotography Performance

The ASI183 cameras has a very large full well capacity（15000e） for such small pixel size, 1.6e read noise @ 30DB, and 12stops dynamic range @ Gain=0. The ASI183 cameras also utilize firmware features to minimize amplifier glow for maximum performance in astrophotography.

Reliable Mechanics

ASI183 Pro has same mechanics as ASI1600 Pro. There are four screws that seal the sensor chamber. Our camera design has been extensively tested and is very stable.

Even when used in higher humidity environments, ASI183 Pro will still work fine without dew problems.

High Speed

Fast FPS can be used in solar and lunar imaging, as well as for live viewing/EAA.The high speed readout may also be used for real-time focusing, true lucky imaging of double stars and other small objects, planetary imaging of the major planets in the solar system, and much more.

10Bit ADC
5496×3672 19fps
3840×2160 41.04fps
1920×1080 80.10fps
1280×720 117.30fps
12bit ADC
5496×3672 19fps
3840×2160 36.12fps
1920×1080 70.48fps
1280×720 103.23fps

High QE

Sony’s back-illuminated Exmor R technology, giving it excellent Deep Sky performance. ASI183 QE peak reaches a remarkable 84%. In Ha channel, QE is still over 60%.

Having high QE means more of the light that enters your telescope and reaches the sensor is actually used. With 84% peak Q.E. and no less than ~50% within the visible spectrum, the ASI183 will utilize a high percentage of the light that reaches it, improving your signal quality.

Dark Current

The dark current of the ASI183 is extremely low, based on our test results.

USB 3.0 Port & USB2.0 HUB

USB 3.0 Port: Provide 5Gb bandwidth to make it possible for ASI183 Pro to run at 19 fps (12bit, normal mode) or 19 fps (10bit, high speed mode) at full resolution(20.18Mega).

Recommended cooler power supply: 12V @ 3-5A (or more) DC adapter (2.1×5.5mm, center pole positive). Also suitable: DC battery with 9-15V.

Using a battery with 9-15V is also suitable for the cooler power supply.

USB 2.0 HUB: can connect with various accessories, such as filter wheel, guide camera and electronic focuser, so you can better manage your cables. The ASI183 Pro includes two short 0.5m USB 2.0 cables. The integrated USB 2.0 hub is powered by the external power source if you connect one.

Cooling System

The ASI183 Pro has a 2-stage TEC cooling system that enables deep cooling (40°C-45°C below ambient). The cooler requires an external power supply, which is not included with the camera.

Connecting Drawing

1. M43-T2 adapter

2. EOS-T2 adapter

3. 2”Filter (optional)

4. 1.25” T-Mount

5. 1.25” Filter (optional)

6. M42-1.25” adapter (optional)

7. T2 extender 11mm

Mechanical Drawing

What is in the box?

ASI183 Pro box includes all necessary cables, adapters, and manuals.

Camera Specifications

Cooling & Power

Environmental Conditions

Max FPS at Full Resolution (10-bit ADC)

Max FPS at Full Resolution (12-bit ADC)

Astronomical OSC camera with large full well capacity
ASI585MC

ASI585MC adopts Sony IMX585 CMOS sensor. As one of ZWO's latest OSC planetary cameras, it features a large sensor format of 1/1.2", a high resolution of 3840*2160, and a surprisingly amazing characteristic of ZERO AMP GLOW! The pixel size is 2.9um*2.9um. In 12-bit mode, it produces 46.9 FPS with super low readout noise!

8.29MP Senor

ASI585MC has the same pixel size of the ASI462MC at 2.9um, but its resolution is 4 times that of ASI462MC, which is a total of 8.29 megapixels. The sensor size is 11.13*6.26mm, and the diagonal length is 12.84mm. The 1/1.2" large sensor format makes it very suitable for solar and lunar imaging. It can also be used as an all-sky camera or live camera to observe and monitor cloud cover, rain, meteors and other weather conditions.

STARVIS 2

ASI585MC adopts the Latest SONY IMX585 sensor with STARVIS 2 technology. Featuring zero amp glow, lower dark current noise, and 3 times larger full well capacity, this camera is regarded as an upgrade of ASI485MC. It is also more sensitive to red, green and near infrared (NIR) lights compared to ASI485MC, especially in >850nm wavelength range, its light sensitivity is 1.5 times greater than ASI485MC.

Upgraded Model

The ASI585MC is an upgraded camera to the ASI485MC. Compared with the ASI485MC, it has the characteristics of a larger full well depth and no amp glow.
Model

Large Full Well Depth

Thanks to the back-illuminated sensor structure and advanced pixel technology, the camera has very low readout noise and a large full well depth. Especially in low light conditions, the camera performs excellent, capturing very clear images of celestial objects.

Camera Curve

Low read noise, high dynamic range

The camera has a built-in HCG mode, which can effectively reduce readout noise at high gain and allow the camera to maintain the same high dynamic range as it does low gain. When the gain is 252, the HCG mode is automatically turned on and the Dynamic range reaches a level close to 12bit. 

The readout noise is as low as 1.5.

aintain the same high dynamic range as it does at low gain. When the gain is 150, the HCG mode is automatically turned on and the dynamic range reaches a level close to 12bit. The readout noise is as low as 0.8e.

ZWO ASI220MM Mini New Generation Guide Camera

ZWO ASI220MM Mini camera integrates a 1/1.8" SC2210 sensor (7.68mm x 4.32mm). It is a mono guide camera with excellent near-infrared sensitivity. This camera has 4um x 4um pixels with an array of 1920 x 1080 and a full well capacity of 8780e. The protective window is AR coated.

Instruction Manual

SKU: ASI220MINI

The ASI183MC, ZWO's most sensitive camera to date with a peak absolute Q.E. of 84% in mono made possible by a back illuminated sensor.

Introducing the ASI183 camera series, the most sensitivie cameras in ZWO history. Peak Q.E. of the mono sensor reaches 84%!

Astrophotography Performance

The ASI183 cameras has a very large full well capacity（15000e） for such small pixel size, 1.6e read noise @ 30DB, and 12stops dynamic range @ Gain=0. The ASI183 cameras also utilize firmware features to minimize amplifier glow for maximum performance in astrophotography.

High Speed

Fast FPS can be used in solar and lunar imaging, as well as for live viewing/EAA.The high speed readout may also be used for real-time focusing, true lucky imaging of double stars and other small objects, planetary imaging of the major planets in the solar system, and much more.

10Bit ADC
5496×3672 19fps
3840×2160 41.04fps
1920×1080 80.10fps
1280×720 117.30fps
12bit ADC
5496×3672 19fps
3840×2160 36.12fps
1920×1080 70.48fps
1280×720 103.23fps

High QE

Sony’s back-illuminated Exmor R technology, giving it excellent Deep Sky performance. ASI183 QE peak reaches a remarkable 84%. In Ha channel, QE is still over 60%.

Having high QE means more of the light that enters your telescope and reaches the sensor is actually used. With 84% peak Q.E. and no less than ~50% within the visible spectrum, the ASI183 will utilize a high percentage of the light that reaches it, improving your signal quality.

USB 3.0 Port & ST4 Port

USB 3.0 Port: Provide 5Gb bandwidth to make it possible for ASI183 to run at 19 fps (12bit, normal mode) or 19 fps (10bit, high speed mode) at full resolution(20.18Mega).

ST4 Port: Can be used connect with auto guide port of mount, for guiding.

ASI 183MC Instruction Manual

Mechanical Drawing

What is in the box?

ASI183 box includes all necessary cables, adapters, and manuals.

Camera Technical Details

Environmental Conditions

Max FPS at Full Resolution (10-bit ADC)

Max FPS at Full Resolution (12-bit ADC)

ASI585MC Pro is a new ZWO deep sky camera based on the 4k SONY CMOS sensor with a 1/1.2″ format and 2.9μm pixels. It has a super high sensitivity and a large resolution of 3840*2160 (8.29MP in total). It also features high transmission speeds – In high-speed mode, the fast frame rate can reach 47fps at full resolution! Being an entry-level DSO camera, it offers great advantages of high cost-effectiveness.

Note:

External power supplies are needed for all ASl-cooled cameras. We recommend you use a 12V@3A~5A DC adapter (D5.5×2.1mm, center pole positive) or a lithium battery with 11-14V to power the camera. You can also use ASIAlR to power the cameras. Be aware that using a power supply out of this voltage range will probably lead to irreparable damage to the camera.

One Camera for All

The STARVIS 2 technology brings ASI585MC Pro more advanced imaging performance compared to other cooled cameras. Its high frame rate makes it not only suitable for DSO photography but also solar/lunar/planetary photography.

Jupiter -Jim Rivera

Moon -Christopher Schementi

NGC3372 ( eta Carina) -Simon Lewis

M42, NGC 1976 (Great Orion Nebula) -Simon Lewis

STARVIS 2

STARVIS 2 was developed by SONY and evolved from STARVIS. It is the latest technology with a wider dynamic range and super-high sensitivity beyond the human eye. Benefiting from it, ASI585MC Pro’s sensitivity and signal-to-noise ratio is greatly improved.

Large Full Well Capacity

The back-illuminated structure improves the camera’s full well capacity. Even with unbinned 2.9μm pixels, ASI585MC Pro has a full well capacity of 40ke-, nearly 3 times that of the last-generation sensor IMX485. A larger full well capacity gets the camera higher efficiency in collecting light, can effectively restrain the highlight area from being overexposed, and also can improve the signal-to-noise ratio.

Zero Amp Glow

ASI585MC Pro exhibits extremely clean dark frames with zero amp glow! No matter how long the exposure and how high the gain value is, you can easily get clean and smooth astro images!

Note: This feature is implemented directly at the hardware level, it does not require software control.

512MB DDR3

ASI585MC Pro uses a USB 3.0 interface, along with the built-in 512MB DDR3 cache, ensuring high-speed, smooth, and stable data transmission.

USB 3.0 Port & USB 2.0 HUB

USB 3.0 Port: Provides 5Gb bandwidth to allow ASI585MC Pro to run at 47fps at 8.29MP full resolution (10bit, high-speed mode).
USB 2.0 HUB: Can be used to connect various kinds of USB devices such as EFW, guide camera, and EAF.

Two-stage TEC Cooling

Thanks to the two-stage TEC cooling, ASI585MC Pro can lower the CMOS sensor temperature to more than 35 degrees Celsius below ambient temperature, which can greatly reduce dark current generation and sensor noise even during extended exposure times.

*The Delta T 35℃ is tested at 30℃ ambient temperature. It might get down when the cooling system is working for a long time. Also, as the ambient temperature falls, the Delta T would decrease.

Below is the dark current curve of ASI585MC Pro at the temperature from -20℃ to 30℃.

Camera Performance

Low read noise, High dynamic range

The camera has a built-in HCG mode, which can effectively reduce read noise at high gain and allow the camera to maintain the same high dynamic range as it does at low gain.

When the gain reaches 252, the HCG mode will be automatically turned on and the dynamic range reaches a level close to 11bit. The read noise in this case can be as low as 0.9e.

QE (Quantum efficiency)

Based on our testing results, the QE peak value of ASI585MC Pro is 91%.

Connection Methods (Back Focus Distance: 55mm)

Connection to External Devices

Structural Dimension Diagram

In the Box

ZWO ASI585MC Pro is a perfect match for either of these APO telescopes

ZWO ASI6781MC

ZWO ASI678MC adopts Sony's Latest generation sensor IMX678 with excellent near-infrared response. With the advantages of Large full well capacity, high dynamic range and low readout noise, this camera has been tested and found to have perfect performance in planetary imaging, solar and lunar imaging.

Clear in low light

Thanks to the back-illuminated sensor structure and advanced pixel techno[ogy, the camera has very low readout noise and an ultra-high sensitivity. Especially in Low light conditions, the camera performs very well and is able to capture very clear images of celestial objects.

STARVIS 2

ZWO ASI678MC can be regarded as an upgrade of ASI178MC. It adopts the latest SONY IMX678 sensor with advanced STARVIS 2 technology. Compared to ASI178MC, this camera features zero amp glow, lower readout noise and higher sensitivity. The dark current noise is greatly decreased; the performance of near-infrared is greatly improved.

USB 3.0 & 256M DDR3 Memory

The camera is equipped with a USB 3.0 transmission interface and a built-in 256MB DDR3 cache to ensure stable and secure data transmission. Under Long exposure, it effectively avoids frame dropping and greatly reduces the glow effect caused by slow reading speed.

Upgraded Model

The ZWO ASI678MC is an upgraded product of the ASI178MC. Compared to the ASI178MC, the ASI678MC has lower read noise, lower dark noise, and no amp glow.

No Amp Glow

ZWO ASI678MC exhibits zero amp glow, no matter how long the exposure and how high the gain value is. Since it is implemented directly at the hardware level, it does not require software control.

HCG Mode

The camera has a built-in I-ICG mode, which can effectively reduce readout noise at high gain. This allows the camera to maintain the same high dynamic range as it does at [ow gain. When the gain is 182, the I-ICG mode is automatically turned on. The readout noise is as low as 0.8e, and the dynamic range can still reach a level close to 12bit.

Quantum Efficiency

The QE curve and readout noise are very important parameters to measure the camera's performance. Higher QE and tower readout noise are necessary to improve the image signal-to-noise ratio.

Dark Current Noise

ASI678MC has much lower dark current noises than ASI178, bringing it has better image signal-to-noise ratios. If we compare the darks frames captured with these two cameras, it can be easily found that the frame from ASI678 has much Less noise and rooks much smoother.

Instruction Manual

SKU: ZWO-ASI678MC

Product Description

ASI294MM-P is a back-illuminated, 4/3” format, 14-bit ADC camera with 4.63um pixels *(. It is the mono version of ASI294MC Pro, one of the top selling cameras from ZWO. It has an impressive 66ke- full well capacity and 4144*2822 big resolution.

Not only does it have a very high QE value with a peak at about 90%, but feature an ultra-low readout noise of 1.2e. If you are seeking for a small-format mono camera for astrophotography, then ASI294MM-P gonna be your ideal choice.

14-bit ADC and 13stops dynamic range

ASI294MM Pro has very similar parameters as its color version. Both have the 14bit ADC and a high dynamic range of 13 stops, which is even higher than that of ASI1600MM Pro camera.

Unlocked Bin1 Mode

Yet another perk of the ASI294MM Pro is that the pixel size is switchable – the default setting is Bin2, but you can switch to Bin1 anytime in your astrophotography software. This changes the pixel size into 2.3um and increases resolution to 8288×5644. This is what we called “Unlocked Bin1 Mode”. The ability to unlock bin1-mode was a popular request from our customers. Of course we listened to you and worked quickly to make it possible.

Remember that using Bin1-mode will decrease the full well capacity compared to the standard bin2-mode.

Unlocked Bin1: 12bit ADC, 2.3um pixel size, 47 megapixels, 8288*5644 resolution, 14k full well capacity.
Bin2: 14bit ADC, 4.6um pixel size, 11.7 megapixels, 4144*2822 resolution, 66k full well capacity.

Backlit Sensor

The back-illuminated CMOS sensor improves sensitivity and noise reduction – the key factors to enhancing image quality, while radically realigning their fundamental pixel structure from front-illumination to back-illumination. It has retained the advantages of CMOS image sensors such as low power consumption and high-speed operation.

With a conventional front-illumination structure, the metal wiring and transistors on the surface of the silicon substrate that form the sensor’s light-sensitive area (photo-diode) impede photon gathering carried out by the on-chip lens. A back-illuminated structure minimizes the degradation of sensitivity to optical angle response, while also increasing the amount of light that enters each pixel due to the lack of obstacles such as metal wiring and transistors that have been moved to the reverse of the silicon substrate.

Camera Performance

Large well depth capacity, low read-out noise and high dynamic range.

The full well capacity of 66387e of ASI294MM Pro is near the top of all ASI DSO cameras. It ensures a very high dynamic range up to 13stops that will greatly reduce overexposure probability and help gain richer color gradation.

When the gain value is 120, the magical HCG high gain mode is turned on, the readout noise will be largely decreased (as low as 1.2e), and the dynamic range is basically unchanged.

Reliable Mechanics

There are four screws on the camera that seal the sensor chamber. This kind of design has been extensively tested and is very stable. Even when used in higher humidity environments, ASI294MM Pro will still work fine without dew problems.

The anti-dew heater power is around 5W and can be turn off in software to save power.

QE Value

As ZWO’s latest BSI (backside illuminated type) mono camera, ASI294MM Pro has very high QE performance, not only higher than its color version, but even ASI1600MM Pro. It is estimated that the QE peak value is about 90%.

ASI294MM-P vs ASI1600MM Pro

Two-Stage TEC Cooling: Ultra-Low Dark Current

ASI294MM Pro uses two stage TEC cooling that can lower the CMOS sensor temperature to 35c~40c below ambient, which can greatly reduce dark current generation and sensor noise even with extended exposure times.

The unique dark current suppression technology can even further reduce dark current noise. When it’s cooled to -20℃, the current noise can be as low as 0.0022e/s/pix, which is completely negligible!

Please notice that the camera needs to be connected to an external 12v power supply to implement the cooling function. We recommend you use 12V@3A DC adapter (5.5*2.1mm, center pole positive) or lithium battery with 11-15V to power the camera.

USB3.0 & 256M DDR3 Memory

The ASI294MM Pro is equipped with a USB 3.0 transmission interface and a built-in 256MB(2Gb) DDR3 cache to ensure stable and secure data transmission. Under long exposure, it effectively avoids frame dropping and greatly reduces the glow effect caused by slow reading speed.

Notice: For the possible amp glow that shows on your images, please refer to this tutorial: “What is Amp-glow and how do I manage it? “

https://astronomy-imaging-camera.com/faq

Mechanical Diagram

What’s in the box?

The best solution of 55mm back focus length

ASI183MM Pro

Introducing the ASI183 camera series, the most sensitive cameras in ZWO history. Peak Q.E. of the mono sensor reaches 84%!

Using the Sony IMX183CLK-J Mono Sensor with high resolution 2.4 μm pixels, it includes a 256MB DDR3 memory buffer.

 ASI183 QE peak reaches a remarkable 84%. In Ha channel, QE is still over 60%.

DDR Memory Buffer

The ASI183 Pro camera includes a 256MB DDR3 memory buffer to help improve data transfer reliability. Additionally, the use of a memory buffer minimizes amp-glow, which is caused by the slow transfer speeds when the camera is used with a USB 2.0 port.

DDR memory buffer is the main difference between ASI “Cool” and “Pro” cameras.

Astrophotography Performance

The ASI183 cameras has a very large full well capacity（15000e） for such small pixel size, 1.6e read noise @ 30DB, and 12stops dynamic range @ Gain=0. The ASI183 cameras also utilize firmware features to minimize amplifier glow for maximum performance in astrophotography.

Reliable Mechanics

ASI183 Pro has same mechanics as ASI1600 Pro. There are four screws that seal the sensor chamber. Our camera design has been extensively tested and is very stable.

Even when used in higher humidity environments, ASI183 Pro will still work fine without dew problems.

High Speed

Fast FPS can be used in solar and lunar imaging, as well as for live viewing/EAA.The high speed readout may also be used for real-time focusing, true lucky imaging of double stars and other small objects, planetary imaging of the major planets in the solar system, and much more.

10Bit ADC
5496×3672 19fps
3840×2160 41.04fps
1920×1080 80.10fps
1280×720 117.30fps
12bit ADC
5496×3672 19fps
3840×2160 36.12fps
1920×1080 70.48fps
1280×720 103.23fps

High QE

Sony’s back-illuminated Exmor R technology, giving it excellent Deep Sky performance. ASI183 QE peak reaches a remarkable 84%. In Ha channel, QE is still over 60%.

Having high QE means more of the light that enters your telescope and reaches the sensor is actually used. With 84% peak Q.E. and no less than ~50% within the visible spectrum, the ASI183 will utilize a high percentage of the light that reaches it, improving your signal quality.

Dark Current

The dark current of the ASI183 is extremely low, based on our test results.

USB 3.0 Port & USB2.0 HUB

USB 3.0 Port: Provide 5Gb bandwidth to make it possible for ASI183 Pro to run at 19 fps (12bit, normal mode) or 19 fps (10bit, high speed mode) at full resolution(20.18Mega).

Recommended cooler power supply: 12V @ 3-5A (or more) DC adapter (2.1×5.5mm, center pole positive). Also suitable: DC battery with 9-15V.

Using a battery with 9-15V is also suitable for the cooler power supply.

USB 2.0 HUB: can connect with various accessories, such as filter wheel, guide camera and electronic focuser, so you can better manage your cables. The ASI183 Pro includes two short 0.5m USB 2.0 cables. The integrated USB 2.0 hub is powered by the external power source if you connect one.

Cooling System

The ASI183 Pro has a 2-stage TEC cooling system that enables deep cooling (40°C-45°C below ambient). The cooler requires an external power supply, which is not included with the camera.

Connecting Drawing

1. M43-T2 adapter

2. EOS-T2 adapter

3. 2”Filter (optional)

4. 1.25” T-Mount

5. 1.25” Filter (optional)

6. M42-1.25” Filter (optional)

7. T2 extender 11mm

8. M42-M48 extender 16.5mm

9. T2-T2 adapter

10. EFW mini

11. EOS adapter for EFW

Mechanical Drawing

What is in the box?

ASI183 Pro box includes all necessary cables, adapters, and manuals.

Camera Technical Details

Cooling & Power

Environmental Conditions

Max FPS at Full Resolution (10-bit ADC)

Max FPS at Full Resolution (12-bit ADC)

ZWO ASI 174MM Astronomy Camera

ZWO's new ASI174MM camera uses Sony's latest Pregius IMX174 CMOS sensor. It combines several features putting it high on the list for anyone wanting to capture spectacular lunar and solar images, high resolution planetary images at long focal lengths or even as an autoguider without worrying "will I be able to find a guide star?"

The main advantages of the Sony IMX174 chip are:

• Large sensor size of more than 13mm across the diagonal
• High quantum efficiency of 78% at its peak
• Very low read noise of only 6e
• Extremely fast frame rate - effectively freezing moments of steady seeing
• Global shutter and no fixed pattern noise

Sony IMX174 Sensor - big benefits

Prior to the release of the ZWO ASI174 cameras it was difficult to find a good camera capable of full disk images of the Moon or Sun. This is no problem with the ASI174. It's sensor has a pixel array of 1936 x 1216 with 5.86 µm square pixels. This makes the diagonal measurement of the chip 13.4mm across.

The Image above shows the comparative field of view between the ASI120 camera and the new ASI174. Shot through a small refractor at 600mm focal length you can see the ASI174 will easily cover 0.5° of sky. It is now very easy to caputre full disk images of the Sun through many popular solar telescopes from Coronado and Lunt - no more mosaics required.

Quantum Efficiency and Read Noise

Another big benefit of Sony's IMX174 chip is the high quantum efficiency coupled with very low read noise. This equates directly to better signal to noise. Even with very fast capture rates you will get more signal from your target and less contribution from reading off the sensor of the camera - in essence cleaner data resulting in better images!

For a few years now Sony's highly regarded ICX618 CCD chip was a popular choice for planetary cameras. If we compare the new Sony IMX174 sensor to Sony's ICX618 the news is good for both QE and read noise.

The quantum efficiency of the IMX174 is slightly more than 11% better with read noise of nearly half! (6e for the IMX174 vs 11e for the ICX618).

Mechanical Drawing ZWO ASI174MM

The ASI2600 Duo CMOS Camera combines imaging and guiding sensor in one compact body. The main sensor is the Sony IMX571 coming with a native 16bit ADC, 14stops dynamic range and 3.76um square pixel array. The readout noise is as low as 1.0e, and the full well capacity reaches an incredible level of 80ke. And it has no amp glow!

The guide sensor is the Type 1/1.8 SC2210 with excellent NIR sensitivity. The sensor size is 7.68mm x 4.32mm. It has 4umx4um pixels with an array of 1920x1080 and a full depth of 8780e.

The stars on the corner of the guide images affected by reducers back focus distance might not be very round. It is not due to the sensor tilt and will not affect normal use.

Please note that external power supplies are required for all ZWO ASI cooled cameras. Contact BINTEL for the correct power supply or advice to suit your ZWO camera.

Two-in-one design

Thanks to the compact design, the ASI2600MC Duo only needs one USB cable for control. It reduces potential cabling issues and improves setup speeds. You don’t need a separate OAG and guide camera.

Tilt Adjustment from Rear（Optional）

The 3 points from the rear make tilt adjustment much easier without the trouble of removing the tilt plate from the camera.

Performance improvement comparison

Guide sensor

The SC2210 sensor taken from the ASI220MM Mini camera features very high sensitivity. The QE peak value reaches 92% at 500nm. The readout noise is as low as 0.6e. As the new generation of guide sensor, it has achieved great results in guiding, proved by hundreds of astrophotographers.

Main sensor

The main sensor IMX571 features an APS-C format and 26MP total pixels. The size is 23.5mm in width x 15.7mm in height, and the diagonal is 28.3mm. The 3.76um x 3.76um small pixel size accommodates an impressive full depth of 50ke. With the new hardware technology, it is even extended to 80ke.

STARVIS technology

ASI2600 Duo CMOS Camera is based on Sony STARVIS technology. Sony’s back-illuminated CMOS image sensor improves sensitivity and noise reduction – the key factors to enhancing image quality.

Camera performance

Native 16bit ADC

This 16-bit ADC is not a CCD 16-bit ADC. It can really achieve a dynamic range output of 14stops, which will significantly improve the image sharpness and contrast, and also create smoother and more natural color transitions.

FPS

ASI2600 Duo CMOS Camera’s max FPS in RAW 8 mode at full resolution is 15FPS, which is even quicker compared to ASI2600MC Pro.

Extended full well mode

The full well capacity of ASI2600MC Duo is extended to 80ke, which is 1.6x larger than ASI2600MC Pro.

USB 3.0 & 512MB DDR3 buffer

With the match of USB 3.0 and 512MB DDR3 buffer, ASI2600MCDuo provides stable and secure data transmission that can effectively avoid frame-dropping issues during long exposures.

No amp-glow

Traditional CMOS sensors produce a weak infrared light source during operation quite often seen in the corner of uncalibrated images. It is the tell-tale sign of amp glow. As the ASI2600MM Duo uses zero-amp glow circuitry, you won’t have to worry about amp glow even when using high gain, long exposure imaging.

QE (Quantum efficiency)

Based on our testing results, the QE peak value of ASI2600MC Duo is over 91%.

Two-stage TEC cooling

Thanks to the two-stage TEC cooling, ASI2600MM Duo can lower the CMOS sensor temperature to more than 35 degrees Celsius below ambient temperature, which can greatly reduce dark current generation and sensor noise even during extended exposure times.

*The Delta T 35℃ is tested at 30℃ ambient temperature. It might get downto this when the cooling system is working for a long time. Also, as the ambient temperature falls, the Delta T would decrease.

What’s in the Box

Introducing the ASI676MC, the all-sky camera featuring a unique square
1/1.6-inch image sensor and a super high resolution of 12MP! It is perfectly suited for meteor recording and full sky surveillance. The
square format facilitates easier composition, making mosaic stitch simpler and more efficient, and the high resolution brings you clear details of the Sun and our Moon. With this camera, you may start your marvelous journey
to explore the boundless night sky.

Why Square Format?

One of the biggest benefits of AS1676MC's square format is it makes the whole mosaic construction process much easier by eliminating the need to consider the difference between the long and wide
sides of the format during mosaic stitching. Not only that, the square format also makes the AS1676MC more compatible with various types of lenses such as fisheye lenses and wide-angle lenses. Thus,
ASI676MC is more suitable for tasks such as meteor
recording and full sky surveillance.

Starvis 2 Technology

STARVIS is a sensor technology developed by Sony that surpasses the sensitivity of the human eye. STARVIS 2 is an advancement of STARVIS technology,
supporting an even higher dynamic range. With this technology, ASI676MC exhibits lower readout noise and dark current, along with significantly enhanced
sensitivity in the near-infrared spectrum.

No Amp Glow

AS1676MC does not have any amp glow, no matter
how long the exposure and how high the gain value
you set.

256MB DDR3

The camera is equipped with a USB 3.0 transmission interface and a built-in 256MB DDR3
cache to ensure stable and secure data transmission.

Higher QE Lower Readout Noise

The camera has a built-in HCG mode, which can effectively reduce readout noise at high gain. This allows the camera to maintain the same high dynamic range as it does at low gain. When the gain is 180, the HCG mode is automatically turned on. The readout noise is as low as 0.56e, and the dynamic range can still reach a level close to 11stops.

Quantum Efficiency 

The QE curve and readout noise are very important parameters to measure the camera's performance. Higher QE and lower readout noise are necessary to improve the image signal-to-noise ratio. According to our estimation, the QE peak value of ASl676MC is about 83%.

Dark Current Noise

The ASI676MC's lower dark current noise means that the image signal-to-noise ratio is also higher, especially when photographing dark objects, it produces images with better sharpness.

IR-Cut Coated Window

ASI676MC is equipped with an IR-cut coated window in front of the sensor, with a diameter of 21mm and a thickness of 1.1mm. It effectively reduces infrared interference and improves image quality.

The AS1715MC is a sensitive color camera with a 1/2.8" sensor and 8.46 megapixel resolution. With the Sony STARVIS technology used, this camera has low readout noise (0.72e) and ultra-high sensitivity, making it ideal for astronomical imaging of the planets and smaller
deep-sky objects and also for microscope photography.

High Transmission Speed The camera is equipped with a USB 3.0 transmission interface and a built-in 256MB DDR cache to ensure stable and secure
data transmission.

USB 3.0 Port & ST4 Guide USB 3.0 Port: Provides 5Gb bandwidth to allow AS1715MC to run at
45.1fps (10bit, high speed mode). ST4 Port: Can be used to connect with the auto guide port of mount
for guiding

.

Readout Noise Readout noise includes pixel noise, circuit noise, and ADC quantization noise. The lower the readout noise, the better. As can be seen, the readout noise of ASI715MC is very low. As the gain value goes high, the readout noise goes down.

Quantum Efficiency The QE curve and readout noise are very important parameters to measure the camera's performance. Higher QE and lower readout
noise are necessary to improve the image signal-to-noise ratio. According to our estimation, the QE peak value of ASI715MC is about80%.

Introducing the ASI183MM, ZWO's most sensitive camera to date with a peak absolute Q.E. of 84% made possible by a back illuminated sensor.

Astrophotography Performance

The ASI183 cameras have a very large full well capacity（15000e） for such small pixel size, 1.6e read noise @ 30DB, and 12stops dynamic range @ Gain=0. The ASI183 cameras also utilize firmware features to minimize amplifier glow for maximum performance in astrophotography.

High Speed

Fast FPS can be used in solar and lunar imaging, as well as for live viewing/EAA.The high speed readout may also be used for real-time focusing, true lucky imaging of double stars and other small objects, planetary imaging of the major planets in the solar system, and much more.

10Bit ADC
5496×3672 19fps
3840×2160 41.04fps
1920×1080 80.10fps
1280×720 117.30fps
12bit ADC
5496×3672 19fps
3840×2160 36.12fps
1920×1080 70.48fps
1280×720 103.23fps

High QE

Sony’s back-illuminated Exmor R technology, giving it excellent Deep Sky performance. ASI183 QE peak reaches a remarkable 84%. In Ha channel, QE is still a over 60%.

Having high QE means more of the light that enters your telescope and reaches the sensor is actually used. With 84% peak Q.E. and no less than ~50% within the visible spectrum, the ASI183 will utilize a high percentage of the light that reaches it, improving your signal quality.

USB 3.0 Port & ST4 Port

USB 3.0 Port: Provide 5Gb bandwidth to make it possible for ASI183 to run at 19 fps (12bit, normal mode) or 19 fps (10bit, high speed mode) at full resolution(20.18Mega).

ST4 Port: can be used connect with auto guide port of mount, for guiding.

Mechanical Drawing

What is in the box?

ASI183 box includes all necessary cables, adapters, and manuals.

Camera Technical Details

Environmental Conditions

Max FPS at Full Resolution (10-bit ADC)

Max FPS at Full Resolution (12-bit ADC)

ASI585MC/MM Pro is a new ZWO deep sky camera based on the 4k SONY CMOS sensor with a 1/1.2″ format and 2.9μm pixels. It has a super high sensitivity and a large resolution of 3840*2160 (8.29MP in total). It also features high transmission speeds – In high-speed mode, the fast frame rate can reach 47fps with low read noise at full resolution! It also features a high SNR and high sensitivity, especially in near-infrared wavelength. Being an entry-level DSO camera, it offers great advantages of high cost-effectiveness.

Note：

External power supplies are needed for all ASl-cooled cameras. We recommend you use a 12V@3A~5A DC adapter (D5.5×2.1mm, center pole positive) or a lithium battery with 11-14V to power the camera. Be aware that using a power supply out of this voltage range will probably lead to irreparable damage to the camera.

Why Choose ASI585MC/MM Pro?

One Camera for All

The STARVIS 2 technology brings ASI585 Series more advanced imaging performance compared to other cooled cameras. Its high frame rate makes it not only suitable for DSO photography but also solar/lunar/planetary photography.

Large Full Well Capacity

The back-illuminated structure improves the camera’s full well capacity. Even with unbinned 2.9μm pixels, ASI585 Series has a full well capacity of 40ke-, nearly 3 times that of the last-generation sensor IMX485. A larger full well capacity gets the camera higher efficiency in collecting light, can effectively restrain the highlight area from being overexposed, and also can improve the signal-to-noise ratio.

Zero Amp Glow

ASI585 Series exhibits extremely clean dark frames with zero amp glow! No matter how long the exposure and how high the gain value is, you can easily get clean and smooth astro images!

Note: This feature is implemented directly at the hardware level, it does not require software control.

512MB DDR3

ASI585 Series uses a USB 3.0 interface, along with the built-in 512MB DDR3 cache, ensuring high-speed, smooth, and stable data transmission.

USB 3.0 Port & USB 2.0 HUB

USB 3.0 Port: Provides 5Gb bandwidth to allow ASI585 to run at 47fps at 8.29MP full resolution (10bit, high-speed mode).
USB 2.0 HUB: Can be used to connect various kinds of USB devices such as EFW, guide camera, and EAF.

Two-stage TEC Cooling

Thanks to the two-stage TEC cooling, ASI585 Series can lower the CMOS sensor temperature to more than 35 degrees Celsius below ambient temperature, which can greatly reduce dark current generation and sensor noise even during extended exposure times.

*The Delta T 35℃ is tested at 30℃ ambient temperature. It might get down when the cooling system is working for a long time. Also, as the ambient temperature falls, the Delta T would decrease.

Below is the dark current curve of ASI585 Series at the temperature from -20℃ to 30℃.

Low read noise, High dynamic range

The camera has a built-in HCG mode, which can effectively reduce read noise at high gain and allow the camera to maintain the same high dynamic range as it does at low gain.

When the gain reaches 252, the HCG mode will be automatically turned on and the dynamic range reaches a level close to 11bit. The read noise in this case can be as low as 0.7e.

QE (Quantum efficiency)

Based on our testing results, the QE peak value of ASI585 is 91%.

Structural Dimension Diagram

What is in the box?

Main Sensor

The main sensor IMX571 features an APS-C format and 26MP total pixels. The size is 23.5mm in width x 15.7mm in height, and the diagonal is 28.3mm. The 3.76um x 3.76um small pixel size accommodates an impressive full depth of 50ke. With the new hardware technology, it is even extended to 73ke.

Guide Sensor

The SC2210 sensor taken from the ASI220MM Mini camera features very high sensitivity. The QE peak value reaches 92% at 500nm. The read noise is as low as 0.6e. As the new generation of guide sensor, it has achieved great results in guiding, proved by hundreds of astrophotographers.

Start Your Astrophotography Journey with Great Convenience

The ASI2600MC Air combines guiding, imaging, and smart control into one compact, lightweight device. Say goodbye to complex setups and enjoy a seamless, hassle-free astrophotography experience.

Effortlessly Connect Multiple Devices

4x USB2.0, 3x DC12V 10A, 1x USB Type-C
USB 2.0 ports for your focuser, filter wheel, and mount; DC 12V 10A input/output ports for reliable power; and USB Type-C port for fast file transfers—you can focus on capturing stunning images without worrying about connectivity issues.

Shoot with Confidence: Ample Storage and Stability

With a massive 256GB eMMC storage, the ASI2600MC Air allows you to capture multiple targets with ease. Rigorously tested with over 300 benchmarks, it ensures system stability. Plus, the USB 2.0 ports support up to 1TB external storage, giving you plenty of room for all your astrophotography needs.

Cross-Platform Device Control

Except from ASIAIR App, ASI2600MC Air can also wirelessly connect to ZWO’s proprietary PC control software, ASIStudio, and also other 3rd-party PC software. 3rd-party software can be controlled through ASCOM extended protocol Alpaca (requires ASCOM Platform version V6.6 or higher).

Bluetooth Connection Supported

Nice and Neat Wiring with AM3/AM5

Frame Rate

Camera Specifications

The best solution of 55mm back focus length

Mechanical Diagram

Camera Details

What is in the box?

The ZWO ASI662MC/MM camera is equipped with the Sony-IMX662 rolling shutter CMOS. Boasting a 1/2.8” frame size combined with a 2.9μm pixel size, it features 2.07 million pixels (1920×1080), and possesses both high sensitivity and low read noise characteristics. In high-speed mode, it can output 107.6 frames per second, providing reliable support for planetary observation.

The ASI662MC/MM is equipped with the Sony-IMX662 rolling shutter CMOS. Boasting a 1/2.8” frame size combined with a 2.9μm pixel size, it features 2.07 million pixels (1920×1080), and possesses both high sensitivity and low read noise characteristics. In high-speed mode, it can output 107.6 frames per second, providing reliable support for planetary observation.

Product Highlights

Quantum Efficiency

The QE curve and readout noise are very important parameters to measure the camera's performance. Higher QE and lower readout noise are necessary to improve the image signal-to-noise ratio.

The peak quantum efficiency of ASI662MC is 91%.

Based on internal testing and calculation, the peak quantum efficiency of ASI662MM is 91%.

Camera Details

Connecting the ZWO ASI662MM to a telescope

Mechanical Diagram

Mechanical Diagram

Main Features:

Anti-dew

ASI6200 Pro comes with the polyimide heater that can avoid any dew problems.
The anti-dew heater which completely fit the protective window will heat it to avoid any dew problems.

Full Frame format

The ASI6200 Pro camera uses a full-frame format. The outstanding 9576x6388 resolution provided by the onboard Sony IMX455 sensor makes this camera a 61.2-megapixel full frame powerhouse! The sensor length and width are 36mm x 24mm respectively, and the diagonal is 43.3mm. This is a camera with a small pixel size of 3.76um that can accommodate a large well depth of 51.4ke.

Native 16bit ADC

ASI6200 Pro camera is our first batch of CMOS astronomy cameras with true 16-bit ADC. It is not a CCD-style 16-bit ADC – it really can achieve a dynamic range output of 14 stops. This significantly improves the image sharpness and contrast, and the contrast gradients are smoother and more natural-looking.

Built for astrophotography

USB3.0 & 512M DDR3 Memory
The ASI6200 Pro camera is equipped with a USB 3.0 transmission interface and a built-in 512MB DDR3 cache to ensure stable and secure data transmission.

QE value

The QE peak value of the ASI6200MC Pro camera is 80%.

Relative response（ASI6200MC Pro）

The QE peak value of the ASI6200MM Pro camera is 91%.

Ultra-low dark current

The unique dark current suppression technology can further reduce dark current noise. At a cooling temperature of 0°C, the dark current noise is only 0.0017e/s/pix. This means a 300s exposure will only cause a dark current noise of 0.51 e/pix, which is completely negligible!

Camera Details

Some images by ZWO users

The best solution of 55mm back focus length

Mechanical Diagram

What's in the box?

The ZWO ASI533MM PRO adopts a Sony back-illuminated IMX533 sensor, which is a 1-inch square frame sensor made suitable for deep sky astrophotography needs. The ZWO ASI533MM Pro can be regarded as an upgrade of the ASI183 series. Not only does it retain the high-quality features of the ASI183, such as high QE and frame rate, but it also features: no amp glow, readout noise as low as 1.0e, pixel size of 3.76 μm, 3008 x3008 array (11.31mm x 11.31mm) array and a 2-stage TEC cooling. It is highly recommended for beginners of deep sky astrophotography.

1-inch Square Frame
The IMX533 is a 1-inch square frame CMOS image sensor with approximately 9M effective pixels at a pixel size of 3.76 μm. The 14-bit digital output of IMX533 makes it possible to read out signals of 9m effective pixels at a high speed of 20 frames per second with read noise as low as 1.0e, the performance of which is on par with those of SCMOS or EMCCD sensors. This sensor is suitable for image needs that require high definition and low noise.

Full Upgrade
The ZWO ASI533MM Pro is considered a full upgrade version of the ASI183 series.

Camera Curve

Quantum Efficiency

Based on ZWO’s calculation, the peak quantum efficiency of ASI533MM Pro is greater than 91%.

Zero Amp Glow

Traditional CMOS sensors can generate weak infrared light, which is equivalent to a light source during exposures. The ASI533MM Pro uses a no-glow circuitry to ensure best quality images regardless of gain or exposure length.

2 Stage TEC Cooling
The 2-stage thermoelectric can cool the CMOS sensor to 35 degrees below the ambient temperature (based on a 30 degree ambient temperature test results). Greatly reducing dark current and thereby improving the signal to noise ratio, even with a long expose of hundreds of seconds. Note: the lower the ambient temperature is, the smaller the Delta T is.

Dark Current

USB 3.0 & 256M DDR3 Memory
ASI533MM Pro is equipped with a USB 3.0 transmission interface. In 14-bit ADC mode, the output frame rate can reach 20 frames per second. Additionally, the 256M DDR3 memory ensures a more stable data transmission during long exposure without frame loss, and can also relax the hardware requirements of the computer used for data capture.

Appreciation Work

Connection Method

Connection to External Device

Structural Dimension Diagram

Specifications

Main Features:

Anti-dew

ASI6200 Pro comes with the polyimide heater that can avoid any dew problems.
The anti-dew heater which completely fit the protective window will heat it to avoid any dew problems.

Full Frame format

The ASI6200 Pro camera uses a full-frame format. The outstanding 9576x6388 resolution provided by the onboard Sony IMX455 sensor makes this camera a 61.2-megapixel full frame powerhouse! The sensor length and width are 36mm x 24mm respectively, and the diagonal is 43.3mm. This is a camera with a small pixel size of 3.76um that can accommodate a large well depth of 51.4ke.

Native 16bit ADC

ASI6200 Pro camera is our first batch of CMOS astronomy cameras with true 16-bit ADC. It is not a CCD-style 16-bit ADC – it really can achieve a dynamic range output of 14 stops. This significantly improves the image sharpness and contrast, and the contrast gradients are smoother and more natural-looking.

Built for astrophotography

USB3.0 & 512M DDR3 Memory
The ASI6200 Pro camera is equipped with a USB 3.0 transmission interface and a built-in 512MB DDR3 cache to ensure stable and secure data transmission.

QE value

The QE peak value of the ASI6200MC Pro camera is 80%.

Relative response（ASI6200MC Pro）

The QE peak value of the ASI6200MM Pro camera is 91%.

Ultra-low dark current

The unique dark current suppression technology can further reduce dark current noise. At a cooling temperature of 0°C, the dark current noise is only 0.0017e/s/pix. This means a 300s exposure will only cause a dark current noise of 0.51 e/pix, which is completely negligible!

Camera Details

Some images by ZWO users

The best solution of 55mm back focus length

Mechanical Diagram

What's in the box?

Astronomical camera with large full well capacity
ASI585MM

ASI585MC adopts Sony IMX585 CMOS sensor. As one of ZWO's latest planetary cameras, it features a large sensor format of 1/1.2", a high resolution of 3840*2160, and a surprisingly amazing characteristic of ZERO AMP GLOW! The pixel size is 2.9um*2.9um. In 12-bit mode, it produces 46.9 FPS with super low readout noise!

8.29MP Senor

ASI585MM has the same pixel size of the ASI462MC at 2.9um, but its resolution is 4 times that of ASI462MC, which is a total of 8.29 megapixels. The sensor size is 11.13*6.26mm, and the diagonal length is 12.84mm. The 1/1.2" large sensor format makes it very suitable for solar and lunar imaging. It can also be used as an all-sky camera or live camera to observe and monitor cloud cover, rain, meteors and other weather conditions.

STARVIS 2

ASI585MM adopts the Latest SONY IMX585 sensor with STARVIS 2 technology. Featuring zero amp glow, lower dark current noise, and 3 times larger full well capacity, this camera is regarded as an upgrade of ASI485MC. It is also more sensitive to red, green and near infrared (NIR) lights compared to ASI485MC, especially in >850nm wavelength range, its light sensitivity is 1.5 times greater than ASI485MC.

Upgraded Model

The ASI585MM is an upgraded camera to the ASI485. Compared with the ASI485MC, it has the characteristics of a larger full well depth and no amp glow.

Large Full Well Depth

Thanks to the back-illuminated sensor structure and advanced pixel technology, the camera has very low readout noise and a large full well depth. Especially in low light conditions, the camera performs excellent, capturing very clear images of celestial objects.

Camera Curve

Low read noise, high dynamic range

The camera has a built-in HCG mode, which can effectively reduce readout noise at high gain and allow the camera to m aintain the same high dynamic range as it does at low gain. When the gain is 150, the HCG mode is automatically turned on and the dynamic range reaches a level close to 12bit. The readout noise is as low as 0.8e.

All-sky Camera

Introducing the ASI676MC/MM , the all-sky camera featuring a unique square 1/1.6-inch image sensor and a super high resolution of 12MP! It is perfectly suited for meteor recording and full sky surveillance. The square format facilitates easier composition, making mosaic stitch simpler and more efficient, and the high resolution brings you clear details of the Sun and our Moon. With this camera, you may start your marvelous journey to explore the boundless night sky.

ASI676MC / MM Highlights

Why Square Format?

One of the biggest benefits of ASI676MC/MM's square format is it makes the whole mosaic construction process much easier by eliminating the need to consider the difference between the long and wide sides of the format during mosaic stitching.

Not only that, the square format also makes the ASI676MC/MM more compatible with various types of lenses such as fisheye lenses and wide-angle lenses. Thus, ASI676MC/MM is more suitable for tasks such as meteor recording and full sky surveillance.

STARVIS 2

STARVIS is a sensor technology developed by Sony that surpasses the sensitivity of the human eye. STARVIS 2 is an advancement of STARVIS technology, supporting an even higher dynamic range.

With this technology, ASI676MC/MM exhibits lower readout noise and dark current, along with significantly enhanced sensitivity in the near-infrared spectrum.

256MB DDR3

The camera is equipped with a USB 3.0 transmission interface and a built-in 256MB DDR3 cache to ensure stable and secure data transmission.

No Amp Glow

ASI676MC/MM does not have any amp glow, no matter how long the exposure and how high the gain value you set.

Note: This technology is implemented directly at the hardware level, it does not require software control.

HCG Mode

The camera has a built-in HCG mode, which can effectively reduce readout noise at high gain. This allows the camera to maintain the same high dynamic range as it does at low gain. When the gain is 180, the HCG mode is automatically turned on. The readout noise is as low as 0.56e, and the dynamic range can still reach a level close to 11 stops.

Quantum Efficiency

The QE curve and readout noise are very important parameters to measure the camera's performance. Higher QE and lower readout noise are necessary to improve the image signal-to-noise ratio.

ASI676MM

Dark Current Noise

The ASI676MC/MM's lower dark current noise means that the image signal-to-noise ratio is also higher, especially when photographing dark objects, it produces images with better sharpness.

Coated Window

The ASI676MM camera features an AR-coated protective filter in front of the sensor, with a diameter of 21 mm and a thickness of 1.1 mm. It protects the sensor from external damage while enhancing light transmission from the near-ultraviolet to the near-infrared spectrum.

Connection Methods

Connection to External Devices

Structure Dimension Diagram

What's in the Box?

Full-Frame Products Comparison

The ASI4400MC Pro is the latest addition to ZWO’s full-frame deep-sky camera lineup.
Positioned between the ASI6200MC Pro and the ASI2400MC Pro, the ASI4400MC Pro strikes the perfect balance between image quality and efficiency, giving users a versatile option within the full-frame lineup.

Comparison Table:

Full-Frame for a wider field of view

The ASI4400MC Pro uses a full-frame, back-illuminated sensor measuring 36 × 24 mm with a 43.3 mm diagonal. With 44 megapixels and 4.4 μm pixels, it delivers incredible resolution and light sensitivity in every shot. The full-frame format lets you capture the entire field your optics can deliver - no cropping, no lost edges - perfect for wide-field targets and large deep-sky objects. Each pixel supports a full-well capacity of 74,600 electrons, providing exceptional dynamic range. Bright stars retain their natural color and detail, while faint nebula structures and galaxy arms remain beautifully visible. The result is cleaner, more balanced images with outstanding tonal depth across the frame.

High Dynamic Range, Capturing Both Highlights and Faintest Details

The ASI4400MC Pro features a 14-bit analog-to-digital converter (ADC) that delivers a dynamic range of over 13 stops. This wide range allows a single exposure to capture both bright highlights and faint shadow details without clipping. Whether you’re imaging bright stars, nebula cores, or the delicate wisps of distant galaxies, more tonal information is preserved for smoother gradients and richer color depth. The result is a natural, well-balanced image straight out of the camera, with plenty of flexibility for post-processing and fine-tuning.

Efficient Cooling, Protecting Image Quality

The ASI4400MC Pro uses a powerful two-stage TEC cooling system capable of lowering the CMOS sensor temperature by 30°C to 35°C below ambient. This deep cooling dramatically reduces dark current and thermal noise, keeping your images clean and smooth - even during long exposures that last several minutes. The result is higher signal-to-noise ratio and improved image quality in every frame.
Note: Cooling performance varies with ambient temperature. The lower the ambient temperature, the smaller the achievable differential. Results are based on tests at 30°C ambient. While not found often in Australia, operation below -20°C is not recommended.

Glow Suppression Function*

The ASI4400MC Pro camera features ZWO’s proprietary Glow Suppression technology, which effectively controls sensor glow and maximizes overall imaging performance. This technology is implemented directly at the hardware level and does not require any software intervention.

USB 3.0 & 512MB DDR3 Memory

The ASI4400MC Pro includes a high-speed USB 3.0 interface with a built-in 512 MB DDR3 memory buffer. This design ensures fast and stable data transfer while reducing the risk of dropped frames or transmission errors. The result is reliable image capture, even during long exposures or high-speed downloads.

Anti-dew

The ASI4400MC Pro features a built-in polyimide heater bonded to the protective window to prevent dew and frost buildup, ensuring clear and reliable imaging throughout the night. 

* The heater draws about 5 watts of power and can be turned off through the software when conditions allow, not only to save power but also to reduce the load on USB hubs and external power supplies. 

*While Glow Suppression significantly reduces CMOS sensor glow, it does not eliminate it entirely. A small amount of glow may still be present; however, with dark-frame calibration, it has no impact on the final image quality.

Sensor Tilt Adjustment

The ASI4400MC Pro includes three sets of sensor tilt adjustment screws. Each set has a push and a pull screw that let you fine-tune the sensor’s alignment with your telescope’s optical axis. This adjustment helps correct any slight tilt that can cause stars to appear elongated or out of focus toward the edges of the frame, ensuring sharp, even focus across the entire image.

Camera Performance

The ASI4400MC Pro offers a dynamic range of up to 13 stops, allowing it to capture both bright highlights and faint shadow details in a single exposure. This wide range is key to achieving high dynamic range (HDR) performance, preserving fine tonal transitions and subtle color detail in deep-sky images. When the gain setting reaches 136, the camera automatically activates HCG (High Conversion Gain) mode, which greatly reduces read noise while maintaining full dynamic range. This means you can increase sensitivity for faint targets without adding unwanted gain noise, making it easier to capture clean, detailed images under a variety of conditions.

QE Value