The ZWO SII 7nm 2in filter passes light at 672nm wavelength with a bandpass of 7nm which is designed for nebula observation. It is suitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants, use it with H-alpha and OIII narrowband filters (SHO Set) for tricolor CCD astrophotography.

Technical Data

• FWHM：7±0.5nm
• Fine-optically polished to ensure accurate 1/4 wavefront over the both surfaces
• About 90% transmission at SII line 672nm (SII filter )
• Infrared wavelength 700-1100nm cut-off
• <0.1% transmission of off-band, OD3(Optical Density)

Transmission Curve

New from ZWO. The ZWO SONY NEX adapter can be used to connect Sony NEX lens and ASI cameras with small sensor formats, such as ASI1600, ASI294, ASI183, ASI174, ASI432 and ASI585.

Only support manual lenses supported, not compatible with automatic lenses.

Suits cooled and uncooled ZWO cameras.

Connecting ZWO SONY NEX to your ZWO Uncooled Camera

Connecting ZWO SONY NEX to your ZWO Cooled Camera

ZWO SONY NEX Schematic Drawing

SKU: ZWO-SONY-NEX

ZWO-T2-1.25-3mm Adapter

Your camera has a T-Thread at the front and you want to load an IR or CLS filter to it. By using the ZWO-T2-1.25 3mm adapter you screw it into the T-Thread on the camera and the 1.25" filter into the adapter. Leaving you enough T-Thread to load it onto your scope.

Name: T2-1.25″ Filter adapter

Thread: outer M42*0.75 male thread, inner M28.5*0.6 female thread

SKU: ZWO-T2-1.25-3

ZWO T2 to T2 adapter

Picture this you have your camera with a female T-Thread how you need a Male T-Thread. You need the T2-T2 adapter ring.

A male to Male T-Thread ring that will only add 2mm to your image train

SKU: ZWO-T2-T2

ZWO T2-1.25 Inch Holder has M42 *0.75 (T-Thread) on each end,

Can be used to hold any 1.25" Accessory,.

Has Brass Compression Ring

Thumbscrews included

SKU: ZWO T2-1.25M

Compatible with all ASI cameras and all C and CS lenses

Back focus of C lenses is 17.5mm

Back focus of CS lenses is 12.5mm

Black anodised finish, aluminium construction

Name: ZWO T2 -T2 extension 11mm

Thread: M42*0.75 female to female thread

Match Model: ASI1600mm, ASI1600mc, ASI1600mm-c, ASI1600mc-c

also suits most ZWo Cooled -Pro Cameras

Size: M42*0.75

SKU: ZWO-T2-T2-11

The ZWO T2-T2 Extension 21mm is designed to help you to reach 55mm back focus distance

for example: attach the 21mm extender to ASI071 to reach 55mm back focus distance:17.5mm+21mm+16.5mm=55mm

SKU: ZWO-M42-M42-21mm

The New T Tilter-II adds multiple screw holes to help connect to ZWO EFW (compatible to 2” EFW filter wheel).

Replaces original T-Tilter.

The new model offers more mounting options for you ZWO camera.

Dimensions

Main body：Diameter 78mm，11mm without the T2-T2 adapter

T2-T2 adapter：Thickness 2mm

Interface: T2 (M42*0.75 thread) each side

Main Uses

Mainly used to reduce newton ring when imaging ha-solar；

Also used to adjust the camera imaging plane by rotating the six nuts in the main body when the sensor plane is uneven

Suits all ASI cameras except ASI071, ASI2600 and ASI6200, which require the 68mm Tilter.

Connecting to Camera

Cooled camera: ASI294/ASI1600/ASI183/ASI533

Non-cooled camera:

ASI294/ASI1600/ASI183/ASI174

These cameras do not need to connect to the T2-T2 adapter

ASI178/ASI290/ASI224/ASI120

These cameras need to connect to the T2-T2 adapter first.

Mechanical Drawings

In the Box

T2 tilter x 1

T2-T2 adapter x 1

Hexagon wrench x 1

Upgrade your Seestar setup with the TC20 Carbon Fibre Tripod plus TH10 Fluid Tripod head.

The Tripod

A lightweight, sturdy, and adjustable tripod—perfect for a Seestar S30 or Seestar S30 Pro, or for a Seestar S50 in need of a replacement for the stock tripod.

Adjustable Height & Easy Leveling: The TC20 tripod can be adjusted between 9.3” and 14.4” (235–365 mm) tall, with independently adjustable legs that make it simple to level your setup on uneven terrain.

Lightweight & Portable Design: Constructed from carbon fibre, the tripod weighs just 1.3 lbs (0.59 kg) while supporting up to 66 lbs (30 kg) of equipment. It folds down to 10.4” (265 mm) and comes with a protective drawstring carrying bag for convenient transport.

Wide Compatibility: Features a standard 3/8″ threaded mounting screw for easy installation with a wide range of devices and accessories.

Enhanced Stability: Equipped with rubber feet to ensure a secure, non-slip grip while reducing vibrations on various surfaces for steady performance.

The Fluid Head

Seestar TH10 hydraulic tripod head is specially designed for use with Seestar smart telescopes in equatorial mode. It also compatible with most SLR cameras, mirrorless cameras, video cameras, and more.

Made of durable full-metal construction, Seestar TH10 tripod head is compatible with most tripods and accessories on the market. It comes with a quick-release plate that supports both 3/8″ and 1/4″ screws, allowing for easy setup with a wide variety of devices.

With a self weight of 411g, this tripod head can carry a large payload of 5kg.

ZWO USB3.0 2M Cable

Cable Length: 2 meters

USB Connector Type: Type-B 3.0(male) to Type A(male)

ZWO Counterweight Bar is designed for when using more than 13kg on the AM5 mount.

Machined from 304 Stainless Steel 230mm in length, 20mm in diameter with an M12 1.75 thread. It will match many other mounts.

SKU: ZWO-BC230

ZWO D70-M54F Adapter may be required when fitting the ZWO OAG-L to a 36mm, 31mm /1.25" filter wheel

Product Description

New ZWO Filter Drawer Nikon with a thickness of 29mm that can be used for carrying 2” filter and connecting ASI cooled cameras to Nikon Lens.

It is compatible with all ASI cooled cameras with 17.5mm back focus distance (except ASI GT series): 1600/294/183/071/533/2600/6200/2400

It can be used with all ZWO 2” filters, including the duo-band filter, narrowband filter, IR-cut filter, etc.

If you are using 2” filters from a third party, then please make sure they meet the requirements below.

Filters are very easy and convenient to install and pull out with the ability of double strong magnetic adsorption.

The thread of the interface: M42*0.75.

You will need to use an M54M-M42F adapter (0mm) to connect the filer drawer to the full-frame camera.

Connection method:

Connecting to ASI1600/294/183/533：

Connecting to ASI6200/2400/2600/071:

*The M54M-M42F adapter is needed when connected to full frame camera ASI6200/2400.

Mechanical drawing:

ZWO FD Nikon Specifications

70mm diameter*29mm(thickness)

M42*0.75 male (external) thread (camera side)

M48*0.75 female (internal) thread (filter end)

Suitable for 2-inch astronomical filters

What’s in the box?

The ZWO new Nikon-T2-Ⅱ adapter is independently developed by ZWO. It’s composed of a 29mm new Nikon-T2 adapter and a 5mm T2 extender, and suitable for all ASI cameras except full frame cameras like ASI6200 and ASI2400.

You can use 2″ IR-CUT filter with the adapter.

Connection method:

1. With ASI cooled cameras (ASI533/183/294/1600/071/2600)

2. With ASI non-cooled cameras

• ASI1600/294/183/174 (17.5mm back focus length)

• ASI178/385/462/290/224/120 (12.5mm back focus length)

What’s in the box?

ZWO-OAG Off Axis Guider

NEW from ZWO Thin Off Axis Guider that allows you to Autoguide in SCTs and Refractors whilst only adding 16.5mm to the optical path.

Features a precision 8mm x 8mm prism, it comes complete with M48 and T2 adapters to the scope and M42 and M48 adapters to camera to keep back focus to a minimum, a 5mm spacer for guide cameras where the back focus is only 12.5mm.

Compatible with all ZWO ASI cameras.

A must for Cassegrains,and Refractors No guide scope - No differential flexure between Guide scope and main telescope.

Download Instruction Manual

Connection diagram