Atik Cameras Forum

Support (Please note, this is primarily a user forum, for direct Atik support, please email support@atik-cameras.com) => Atik Infinity => Topic started by: elpajare on August 10, 2016, 10:25:57 am

Title: Filters for deep sky
Post by: elpajare on August 10, 2016, 10:25:57 am

Do you have any recommendation about filters to shoot reflection, emission and planetary nebulae?

There is some improvement or they are not necessary ?

Title: Re: Filters for deep sky
Post by: Chris on August 10, 2016, 01:51:04 pm

Reflection nebulae glow in the light of reflected starlight, this is broadband so no additional filtering is needed.
Emission and planetary nebulae glow by the emission of light from their elements, this is in narrow spectral bands, the major ones are hydrogen Alpha and O[III] so Hydrogen Alpha (Ha) and O3 filters can help.

AIUI the Infinity has a colour sensor, Ha is red so only the red channel will have anything, O3 is Blue-Green so the Green and Blue channels should have signal.

If your skies are light polluted the narrow band filters will help a lot.

Chris

Title: Re: Filters for deep sky
Post by: elpajare on August 10, 2016, 04:45:29 pm

Thanks Chris. Good and clear explanation.