Quote:
Originally Posted by LewisM
Peter sells AP R-H...
Greg sold AP Starfire and TEC...
Join the dots Mike  |
One question remains: will Rick sell his guide-scope -FSQ106...
As for the original question, I have 3nm Astrodon Halpha and using it at F5.6. There is a HUGE difference between 12nm Astronomik and 3nm Astrodon (also cost-wise). After subtracting bias there is literally hardly any unwanted signal left in 5-minute subs from my horribly light polluted site (yellow city's night-sky).
Unfortuantely I cannot comment on a difference between 3 and 5 nm...nor on above-mentioned filter's effectiveness at F3.8...
