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Old 23-07-2009, 04:41 PM
Hagar (Doug)
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Hagar is offline
 
Join Date: Oct 2006
Location: Australia
Posts: 4,646
Quote:
Originally Posted by Omaroo View Post
Great shot Doug - I really like the star quality in your hi-resolution version.
Thanks Chris

Quote:
Originally Posted by h0ughy View Post
wow gives me food for thought for qld astrofest this year. thanks for the nice sharp image to tease me
Thanks David

Quote:
Originally Posted by Martin Pugh View Post
Hi Doug

nice image, but may I suggest a couple of things?

Firstly, with widefield images, particularly those taken in and around the Milky Way, can be overwhelmed with stars. To bring the subject forward, it is often a good idea to make a star selection and run a minimum filter on them to drop them into the background.

Secondly, the FSQ is a fine instrument with a very, very small CFZ prone to rapid focus changes. Your stars do look a little soft, so focussing regularly, when temp changes, and most certainly between filter changes is critical with this telescope.

nice work though mate.

cheers
Martin
Thanks Martin, I usually watch the FWHM figures as the images come in and pass to CCDInspector but maybe I need to pay a little more attention. The seeing here has been terrible and FWHM figures below about 6 are to dream for.
I have reproed this image with a small min filter to the stars. Attached below.
Attached Thumbnails
Click for full-size image (M17min.jpg)
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