I redid it from nearly the ground up this afternoon. I realised you have to be a bit picky with the subs. They varied quite a bit in quality in the luminance. Some weren't fully in focus and some had tracking errors that were too bad. Some were really really sharp. I guess the seeing shifts as well during the night. Attention to focus is critical at F11.
This result is much better:
http://upload.pbase.com/gregbradley/image/124000305
And also the crop turned out OK as well, in fact I prefer the crop:
http://upload.pbase.com/image/124075461
Definitely the job of the larger scope is targets like this. But its nice to use the APO in the meantime. I start construction on Monday and the scope should be here within 2 weeks. A pier is being made at the moment as well so it should be all up and running within a month.
It just makes the APO a more versatile instrument being able to extend it.
Greg.
Quote:
Originally Posted by Bassnut
Nice and bright Greg. Dunno about and extender on such a small apature tho, seems very noisy for 6 hrs. Do you think f11 is a good idea long term on a refractor?, your going to be makeing some insane exposure times on anything dimmer. NF is for the CDK methinks.
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Quote:
Originally Posted by multiweb
Love the colors but I have to agree with Fred. The only way to get good details on that one is with aperture from a dark site with good seeing. How's your new obs coming along? You're going to put some large aperture instrument in it?
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