adding Ideal Filter

[vicuna]

it could just show two filters if both are reasonable and improve the views significantly...in the order that skytools believes is better. probably doesn't have to state the exact percentage one is better

like:

UHC
O-III / UHC <---here you'd know to try O-III first but say you had the UHC in the scope already maybe just leave it
UHC / O-III
O-III

or maybe a simple star system if there are two

O-III* / UHC = strong O-III recommendation
O-III / UHC = slight O-III rec

I'd love this feature. my atlas (Interstellarium) tells you which filter it thinks is best but doesn't take into account your scope / eyepiece / viewing conditions. plus I will likely not be taking the atlas outside anymore.