[avandonk]

Originally Posted by Andy01

Wow, thanks for that insight Bert.

Very interesting and helpful as I too image under Melbourne's light polluted skies in Burwood and have been seriously considering going from 5nm filters to 3nm.

That's one fast 'scope you have at F3! Waaaay better than my F5.6 setup.
May I ask what it is that you are using?

Cheers

Andy

Astrograph is an Officina Stellare RH200 which has a focal length of 600mm and is F3. Clear aperture is 200mm.
FLI Atlas Focuser.
FLI ten position filter wheel CFW-3-10 with 50mm square filters.
Astrodon E series LRGB and HA, NII, SII and OIII 3nm NB filters. Also a continuum filter 5nm.
Camera is a FLI PL16803 which has a sensor size 36.8 X 36.8 mm.
The FoV of this system is 3.5 X 3.5 degrees.
Mount is a Software Bisque PMX.


Bert