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 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.

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?

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.

ASI174MM Mini camera integrates Sony IMX174LLJ / IMX174LQJ 1/1.2″ sensor (11.3 mm x 7.1 mm). It is the first model in the “mini”-series of cameras from ZWO. This camera has 1936 x 1216 pixels with a pixel size of 5.86 μm x 5.86 μm.  It camera provides 12-bit ADC and its QE peak is 77%.

Astrophotography Performance

ASI174MM 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.

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, as it doesn’t matter which way you connect it (unlike for example type-A or type-B)

#USB-C to USB-A cable is required.

ST4 Port: The camera can be connected directly to the auto-guider port of the mount.

High Sensitivity

Sensitivity is the first thing we considered. This is of course a crucial ability when looking for a star to guide on. So, from the beginning, we were set on using monochrome sensors to design our guide cameras. Because monochrome sensors have much higher sensitivity than their colour counterpart. Luckily the ASI120MM Mini, ASI290MM Mini and ASI174MM Mini all have very high QE peak value – about 80%, which can detect more stars in view and shorten the exposure time in guiding.

Each of the cameras have their own strength and depending on what you value in a guide camera, one might be better for you than the others.

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

New Version : THE ZWO ASIAIR Plus 256G

The new ZWO ASIAIR Plus has 256Gb of memory and replaces previous the ZWO ASIAIR Plus with 32Gb of memory which has been discontinued. ZWO now have two versions of the ZWO ASIAIR - this one and the ZWO ASIAIR Mini.

With its new sleeker body it is 24% thinner and 13% lighter than the Original ASIAIR Plus. It features 4 DC 12V outputs, A DSLR Camera shutter release port, RJ45 Ethernet port, 2 USB 3.0 ports, 2 USB 2.0 ports, a newly added USB Type-C port, and an expansion card slot. All packed into a 100mm x 70mm x 26.5mm CNC-machined Aluminium case and of course it is ZWO Red in colour.

The New ZWO ASIAIR PLus 256 G is integrated with 256Gb eMMC Storage that offers faster data transmission speed .

Imaging efficiency at short exposures improves by 26%

FPS on video mode improves by 30%

Enhance Antenna provides stronger WiFi signal and faster communications.

Dual Band WiFi network with a working range of up to 20m. 5Ghz WiFi is faster than 2.4Ghz WiFi, but the range is shorter. The 20M working range is the average of multiple tests in open space at 2.4Ghz. When assembling the ASIAIR Plus, keep the USB 3.0 cable away from the WiFi antenna.

Easy to use Interfaces gives you full control of your gear. 2 x USB 3.0, 2 USB 2.0ports an ethernet port 4 x 12v DC power outlets to connect your cooled camera, dew heater, EAF focuser etc. The newly added USB type C port for exporting your files to your laptop or PC.

Upgradable Storage Capacity: supports external TF cards and USB Drives.

PWR - Input power status display

WIFI - Wireless Network status display

SYS - System I/O status display

12vDC output Power Indicators

Realtime monitoring - 12vDC outputs control switch in App. Along with monitoring unit for ASIAIR Plus's working status.

The whole ASIAIR experience - Astrophotography has never been easier.

System requirements:

In the Box: ASIAIR256 G Controller, ASIAIR Plus Quick Star Guide, ASIAIR Plus Activation Guide, DC 1.5M male - female extension cable (5.5 x 2.1mm standard) USB 3.0 Type B data cable

ZWO’s legendary Electronic Automatic Focuser (EAF) platform gets a smart, modern update with the new EAFN. Designed for astrophotographers who value precision and simplicity, the EAFN retains the solid mechanical design of the original while introducing a USB-C connection and micron-level focus accuracy for today's imaging demands.

It’s the perfect fit for users who want a clean, efficient setup without sacrificing performance.

What’s New in the EAFN:

• USB-C Interface: Easier to connect in the dark, more robust, and in line with modern gear.

• High-Precision Focusing: Delivers micron-level step resolution for ultra-fine focus control.

Tech Specs:

• Connectivity: USB-C, 3.5mm port for hand controller or temperature sensor

• Supported Platforms: ASIAIR, ASCOM, INDI

• Payload Capacity: Up to 5 kg

• Status Indicator: Integrated LED

The ZWO EAFN is a sleek and dependable option for both new and experienced imagers looking to enhance their focusing precision—without the extras. Reliable, accurate, and easy to integrate, it’s everything you need and nothing you don’t.

ZWO EAF Pro – The Next Evolution in Electronic Focusing

ZWO’s best-selling Electronic Automatic Focuser (EAF) just got even better. The new ZWO EAF Pro builds on the rock-solid performance of the original by adding Bluetooth wireless control, a built-in rechargeable battery, and onboard manual focus buttons—all in the same compact form factor. It’s the perfect upgrade for astrophotographers looking to cut down cable clutter and gain more control at the scope.

What’s New in the EAF Pro:

• Go Wireless: Integrated Bluetooth and a 2500 mAh battery let you focus remotely without a tangle of cables.

• Streamlined Upgrades: Shares the same mounting footprint as the standard EAF (5V bracket compatible), so switching over is simple.

• Manual Control Onboard: New physical Focus In/Out buttons allow fast and precise adjustments at the scope—no need to reach for your phone or controller.

Tech Specs:

• Connectivity: Bluetooth, USB-C, 3.5mm port for hand controller or temperature sensor

• Battery: 2500 mAh rechargeable

• Supported Platforms: ASIAIR, ASCOM, INDI

• Hardware Controls: Power switch, Focus In/Out buttons

• Payload Capacity: Up to 5 kg

• Status Indicator: Integrated LED

Whether you're fine-tuning critical focus for deep sky imaging or just want fewer cables in the dark, the EAF Pro is a smart, streamlined upgrade for any astrophotography rig.