OK ive jumped intot he world of LRGB (AstroDons arrived) and this isnt ready for posting but i've hit a snag and include it anyway.
If I focus the Televue on a star with the RGB or even Ha filters I get say a HFD of 4 (for example) with the same exposure. I then achieve best focus with the Lum filter and get a HFD of say 8 (same exposure) - at the lowest possible value it is always nearly twice the size of the coloured filters - am I missing something here? I'll admit ignorance but any advice would be greatly appreciated.
This image is bodgied up with some Ha and Red to form a Luminance of 10 x 6 min and RGB of 5 x 6 minutes each so 60, 30, 30, 30. Hopefully I can improve it with some exposure to reduce noise and soting out this Luminance problem. The colour also needs a bit of attention
but will do some Ha blending and full colour balance processing when I work out whats going on. It shows enough promise to pursue.
Televue np101is, ST8300, Astrodon E series filters