Telescope-Accessories-Askar Colour Magic 2″ Duo-Narrowband 3nm Filter

Innovative Deep-Sky Duo-Band Filter for Astrophotography!

This Duo Narrowband filter is perfect for astrophotography enthusiasts and an indispensable accessory for perfect deep-sky imaging. This Askar filter will effectively eliminate the influence of background light and enhance the image contrast so targets are crisp and clear.

This 3nm Duo Narrowband filter, part of the Askar Color Magic filter series, will enable you to take high-quality deep-sky images, even in areas affected by urban light pollution, night glow, and other undesirable light. The narrower bandwidth of 3nm and the efficient light transmission enhances the contrast of your images considerably, displaying details of stars that are otherwise difficult to see. Combined with the duo Ha and OIII capturing feature and good halo control, this filter is a great choice for deep sky object imaging.

Great Performance, Compatibility, and Construction

Askar has integrated the excellent duo narrowband performance along side great build quality and 2″ filter compatibility in this filter. Whether you’re using this in filter wheel or single filter cell system, the 2″ 3nm Color Magic Duo Narrowband Filter is an excellent match for your camera!

High-Quality Performance
This narrowband filter has an extremely narrow bandwidth of 3nm and an ultra-high transmittance over 88% at its center wavelength of 500.7nm and 656.3nm. This filter will effectively eliminate the influence of light pollution and night glow so you can photograph this filter’s ideal targets which are emission nebulae, planetary nebulae, and supernova remnants. You can get high-quality astronomical images with just one duo-band filter and an ordinary astronomy camera.

Wide Compatability
This filter is mounted in a 2″ threaded filter cell for wide compatibility. The 2″ mounted cell design is one of the most common for imaging filters as it can provide up to full-frame sensor coverage, and as a result this filter can be integrated in a large array of filter drawers, filter wheels, and threaded filter cells that are on the market today!

Physical Properties
The Askar 2″ 3nm Color Magic Duo Narrowband Filter features a 60/40 surface finish, with the filter coming in at a thickness of 1.85 +/- 0.05mm. This filter is designed for a parallelism value of 30″, and has a listed barrier property of ≥OD5 @ 200-1100nm.