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Old 18-04-2011, 08:58 PM
Carl
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field flatteners

Good Evening
I'm trying to get sharp round stars as much to the edge of my images as possible.
I have tracked down a good one from Hotech for my Skywatcher 80ed (i've seen the results on a friends image)
I am using the Celstron f6.3 focal reducer when imaging thru my C8 but the edges of the image are really poor, lots of elongation and i hate cropping.
Any recommendation for a flttener that will give me a much better result?

regards
Carl
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  #2  
Old 18-04-2011, 09:43 PM
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DavidU (Dave)
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A bit of inpho here Carl.
http://www.iceinspace.com.au/93-458-0-0-1-0.html
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Old 20-04-2011, 02:48 PM
terrynz (Terence)
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Quote:
Originally Posted by Carl View Post
I am using the Celstron f6.3 focal reducer when imaging thru my C8 but the edges of the image are really poor, lots of elongation and i hate cropping.
Carl, are you using the correct spacing between the reducer and the CCD? The reason I ask, is that elongation should not be occuring to that extent.

cheers
Terry
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