Filters for deep sky

[elpajare]

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

There is some improvement or they are not necessary ?

[Chris]

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

[elpajare]

Thanks Chris. Good and clear explanation.