This is from last night. 9x600 secs, Ha, Atik314L, WO ZS66.
I could only manage 9 subs as everyone was going home eastwards by plane & then the clouds rolled in.
(http://farm4.static.flickr.com/3053/3117314895_664e68fca2_o.jpg)
Fay,
You've captured some good data there. It's a shame your imaging session was curtailed by cloud.
Mark
Nice. Looks like a giant snarling face to me.
Thanks, yes I was ticking along, but cloud came quicker than was anticipated. Every plane in the country was going east, over my patch!!!!
Very nice Fay - A great result (especially considering the conditions) - Focus looks spot on (why did you bother getting a RoboFocus...) & guiding looks excellent for 10min subs... The Ha filter has kept stars nice & small....
John
Well, thanks John. I often have a problem with focusing. I think I focus on the wrong stars, probably the larger brighter one's & so all the others look dubious.
Is there a rule of what sort of star you should use for focusing?
Well I normally pick one that is reasonably bright.. I also try & select one near middle of CCD... Sometimes it is difficult with Ha as stars can be quite faint which means you need quite a long exposure & so any changes you make to focus are not immediate.
John