Quote:
Originally Posted by batema
Hi Marc,
That is a beautiful image with fantastic star coulours. On Friday my Yr 11 Physics students did their first processing lesson ever on this object from data they took last Thursday and they were wrapped. I'll show them this image on Tuesday to encourage them and show them the colours they should be aiming for. When I look at the stars in the left hand side they appear to be a little oval but the right hand side looks fantastic. The star colours are great as well. Well done.
Mark
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Quote:
Originally Posted by richardo
Hi Marc, this looks great and love the colour blend you've achieved.
Was this with the new refractor??
I ask as I do notice a little diagonal elongation to the corners.
Spacing again??
Just a little nit pick I guess but I know you were working on this a while back.
Rich
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Thanks guys.
Yes the color and Ha were taken with the new refractor but at different times. The color was taken back early in the year, I think during the only clear night we had in NSW in march
Since then I have done a lot of bracing and centering on the extension tubes and focuser so that's why there was a slight sagging on the color back then that's not present on the Ha. But then again color is more prone to show deffects especially in the blues. The
latest color shots I did didn't show *much* elongation but it's still there so time will tell. This scope is designed for a 19mm sensor. The QHY8 is 28mm diagonal. That's always been my bane with this camera. Although it's a great all rounder it's demanding on the optics on all my scopes because of its CCD surface. Big 7.8um pixels.
