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Testing a 12" astrograph

Started by RolandC, 08/21/2013 03:43PM
Posted 08/21/2013 03:43PM Opening Post
This is a central crop of a test object that I like to use when testing scopes at the AP observatory. Image taken with a 12" astrograph at F8 using a 16803 FLI camera. 10 minute exposure on a slightly hazy night. I processed it in MaximDL to bring out the faint stars without blowing out the detail in the core.


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RolandC's attachment for post 57725
Posted 08/21/2013 03:47PM #1
Here is the full frame, reduced size to fit the AM limits.

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RolandC's attachment for post 147482
Posted 08/21/2013 03:58PM #2

Incredibly tight stars. Any indication of the FWHM?

Posted 08/22/2013 09:47AM #3