ZWO

ZWO Duo-Band Filter is a dual narrowband filter primarily aimed at complementing our range of colour ASI cameras. The Duo-Band filter is aimed at the astronomer who may already own a One Shot Colour (OSC) camera and wants to image using narrowband techniques or emission objects without purchasing a mono camera, filter wheel and narrowband filter set. Description The Duo-Band filter offers an economical entry into the world of narrowband imaging and can also offer a practical solution to imaging in light polluted urban areas. The dual band pass nature of the Duo-Band filter passes light at Hα (656.3nm) and...

Narrowband filter does not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula. Description The ZWO H-Alpha filter has a bandpass of 7nm and passes light at 656nm wavelength, light transmission rate comes up to 80%. Best choice of narrowband H-alpha astrophotography filter for high-contrast imaging and revealing rich details of the nebula even in areas with strong light pollution, just prepare to experience the infinite fun with it! The ZWO narrowband S-II 7nm filter passes light at 672nm wavelength with a...

Makes a great fit together with ZWO OAG and ASI Mini Series Cameras. Can also be used for other purposes when an exact focus is required. This ZWO model doesn't rotate your camera when you are adjusting focus and it is super economical. Specifications  Inner Diameter: 1.25"  Stroke: 6mm Adjustment Accuracy: 0.1mm Top Male Thread: M42x0.75 Bottom Female Thread M42x0.75 Minimum Height: 48.5mm Weight: 80-100g

The ZWO IR-Cut Filter blocks infrared light from reaching the sensor of your CCD or CMOS camera or your expensive H-alpha filter. When imaging, the addition of this simple and inexpensive accessory will result in sharper images, and when doing solar work, the IR Cut Filter will your protect H-alpha filter from the damaging effects of infrared radiation. Infrared or IR light is invisible to the human eye, and so even though most telescopes are not designed to focus IR light, it does not matter when you are using your telescope visually. However, when you add a camera to the...

The ZWO Methane band (CH4) filter is a special filter for photographical use. Its FWHM is 20nm which is suitable for most IR sensitive colour or mono cameras.It can reveal the detail of the target and not too dark. It is recommended for planetary imaging such like Jupiter, Saturn and the other planets. This filter is a 1.25″(31.7mm) filter and comes with an inner filter thread . It is protected in a plastic case.

Narrowband filter does not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula. Description The ZWO narrowband S-II 7nm 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 tricolour CCD astrophotography. It can reduce the transmission of certain wavelengths of light, specifically those produced by artificial light including...

Standard 1.25″ T-adapter fits on any telescope that uses a 1.25″ eyepiece focuser for prime focus photography. The standard 1.25″ T-adapter fits on any telescope that uses a 1.25″ eyepiece focuser for prime-focus photography. The T-mount is manufactured from durable metal aluminum alloy.

ZWO 1/3″ 2.1mm 150 degree lens Specifications Format support: 1/3″ sensor Focal length: 2.1mm Wide angel: 150 degree Compatible with the following camera models: ASI120mm, ASI120mc, ASI120mm-s, ASI120mc-s, ASI224mc, ASI290mm, ASI290mc，ASI462MC.

ZWO 2.5mm 170 degree lens compatible with the following camera models: ASI178MM, ASI178MC and ASI385MC Specifications Format support: 1/2″ sensor Focal length: 2.5mm Wide angel: 170 degree

ZWO Duo-Band Filter is a dual narrowband filter primarily aimed at complementing our range of colour ASI cameras. The Duo-Band filter is aimed at the astronomer who may already own a One Shot Colour (OSC) camera and wants to image using narrowband techniques or emission objects without purchasing a mono camera, filter wheel and narrowband filter set. Description The Duo-Band filter offers an economical entry into the world of narrowband imaging and can also offer a practical solution to imaging in light polluted urban areas. The dual band pass nature of the Duo-Band filter passes light at Hα (656.3nm) and...

Narrowband filter does not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula. It can reduce the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapour, and both high and low pressure sodium vapour lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). The ZWO H-Alpha filter has a bandpass of 7nm and passes light at 656nm wavelength, light transmission rate comes up to 80%. Best choice of narrowband...