Color Magic 5nm deep-sky narrowband filter set
Color Magic 5nm deep-sky narrowband filter set
For all astrophotography enthusiasts, filter is one of the indispensable accessories to achieve a perfect deep-sky imaging. The dedicated astronomy filters for deep-skying imging can effectively eliminate the influence from the background light and increase the contract of your pictures in order to have the targets displayed themselves more clearly and delicately. Askar’s 5nm deep-sky narrowband filter set Color Magic is a professional astrophotography tool specifically designed for deep-sky imaging. This set includes an S II filter, an H-alpha filter and an O III filter. The bandwidth of these three filter is an astonishing 5nm.

Compared with the previous Askar 7nm deep-sky filters, this filter set has a narrower bandwidth. Therefore, the annoying interference of background light can be reduced to a great extent. Even if your are heavily infested by the urban neon light, atmospheric night glow and other undesired light, you can also take a high-quality deep-sky picture with the help of Askar 5nm narrowband filters. In addition, the effective transmission of the desired light of these three filters can be more than 90%. So it can better capture the light emitted by the target. The narrower bandwidth and efficient light transmission greatly enhance the contrast of your pictures, making it easier to show the details of the stars that otherwise are quite difficult to spot.

Compared with the 3nm narrowband filters that you can get on the market, Askar’s 5nm deep-sky narrowband filter set is more economical and affordable. It can help you slash down the expenditure on the filters while still satiate your needs for deep-sky astrophotography.

Askar 5nm S II filter

 

The Askar 5nm S II filter is suitable for imaging of S II emitting nebulae or some supernova remnants. The Askar S II filter has an extreme high transmission at a center wavelength of 672.5nm. The 5nm narrow bandwidth enables this astro-imaging filter to block all the light pollution and other unwanted artificial lights or night glow. So the Askar S II filter is an ideal instrument for astro-imaging in heavily light-pollution hit locations and delivers enhanced contrast at darker places.

The Askar S II filter is designed for improving the contrast and details of some nebulae and supernova remnants. Though there is very little sulfur in nebulae, but the emission from the trace of S II in nebulae is rather strong. The deep-red light emitted from S II can bring out the quite delicate detail which is different from those regions that release H-alpha light. So it works well on those nebulae emitting S II. Featuring 5nm narrow bandwidth and a greatly high transmission at a center wavelength of 672.5nm, the Askar S II filter can bring out the most amount of details of the emission nebulae, planetary nebulae and supernova remnants.

Askar 5nm S II filter transmission


Comparison of Askar 5nm/7nm S II filter


Askar 5nm H-alpha filter

 

The Askar H-alpha (Ha) 5nm filter is a helpful tool for imaging of H-alpha emitting nebulae or some supernova remnants. The Askar H-alpha filter has an extreme high transmission at a center wavelength of 656.5nm. The 7nm narrow bandwidth enables this nebula-imaging filter to block all the light pollution and other unwanted artificial lights or night glow. So the Askar H-alpha filter is suitable for astro-imaging in heavily light-pollution hit locations and delivers enhanced contrast at darker places.

Askar 5nm H-alpha filter transmission


Comparison of Askar 5nm/7nm H-alpha filter


Askar 5nm O III filter

 

The Askar O III 5nm filter is suitable for imaging of O III emitting nebulae or some supernova remnants. The Askar O III filter has an extreme high transmission at a center wavelength of 500.5nm. The 5nm narrow bandwidth enables this astroimaging filter to block all the light pollution and other unwanted artificial lights or night glow. So the Askar O III filter is an ideal instrument for astro-imaging in heavily light-pollution hit locations and delivers enhanced contrast at darker places. Besides, the special design of Askar O III filter makes it enable to reduce the bloating problem, with which an astrophotographer is frequently confront when shooting with an ordinary O III filter.

Askar 5nm O III filter transmission


Comparison of Askar 5nm/7nm O III filter