rottielover
1066
29
3
Jan 31, 2018 5:12 AM
rottielover
1066
29
3
astrogeek
B-e-a-utiful
Bozziboi
Lunacy
o0Tektite0o
Always upvote Astronomy Filters
UserNamesArentEasy
I thought these were pogs at first.
appletoad
But what do they do?
rottielover
They only allow certain wavelengths of light to get to the camera sensor.
appletoad
Why would you do that?
rottielover
This probably explains thing much better than I can in a comment: https://starizona.com/acb/ccd/advimcolor.aspx