Thread: Ha 7nm vs 5nm
View Single Post
  #3  
Old 22-09-2014, 04:05 PM
Amaranthus's Avatar
Amaranthus (Barry)
Thylacinus stargazoculus

Amaranthus is offline
 
Join Date: Jan 2014
Location: Judbury, Tasmania
Posts: 1,203
Yep, basically the narrower you go, the better the performance under light polluted skies (with commensurate cost!), and assuming your f/ratio is not too fast. I got myself a set of Astronomik 13 nm filters, because I'm going to be shooting from super dark skies, and so a bit of 'leakage' into the non-target wavelengths is fine (desirable in some ways, due to improved signal). They work okay in LP skies too, but not as well in that instances as the narrower bands. Horses for courses...
Reply With Quote