Quote:
Originally Posted by strongmanmike
......
Your image?..you would likely see some flaws such as elongated stars and too much noise  but to me your image is quite nice - that area lends itself well to Ha only.
Mike |
Yes the elongated stars are field curvature and some tilt at the top. I don't have a flattener and don't want to spend 3000 odd Euro on a flattener for a 4" system via ASA, so I have to put up with the elongated stars.
Not much noise in my full res shot and I cannot see any in the posted image, so not sure where you can see it. Adding more data tonight as I did a heap last night on M66 and M65 but that was not really worth the effort. With tonight I think that will be enough and I will have to wait until my new OIII (3nm) and SII (5nm) filters arrive from Astrodon to do much more to this image in moon light.