Quote:
Originally Posted by kosborn
Attached is just half a dozen luminance files stacked together from last night (stretched but otherwise not processed). My goto mount was centred on NGC 6726 but I don't think that's the best framing for my fov - although it might show the dust well. This was 100mm aperture at 550mm focal length. Your fov will be much smaller than mine but if you aimed at NGC 6726 you'd probably get nice framing. At f/13 you'll need long exposures. It is it on an alt-az mount because field rotation might be an issue? I'll defer to more experienced advice... As long as you can get good exposure times with round stars you should be ok.
Kevin
|
Thank you for your advice Kevin.
Based on that, I think I'll give it a go and see what I can get. My alt-az mount has a wedge and although not perfect, I tend to only get 0.1 Deg of rotation over about an hour of exposures. My biggest issue with it is that although tracked, the tracking stutters so I can get around 20 secs with marginal movement per shot until is star trails to it's next rest point. This means that around 1 in every 5-6 20sec subs has a small star trail and has to be thrown out of the stack. On average, once I've cut the bad ones out and DSS has used the best 80%, I get about 25-27 mins of exposure out of 40 mins of subs.
I'm keen to join the party though with my limited equipment so I'll see what I can get
Thanks again