Wednesday, November 4, 2020

Open Clusters by Meade DSI #1

The following are a few never posted open star clusters taken with the Celestron 8/AVX and Meade DSI back on 1/14/2016. Lacking notes I have estimated the fields of view based on ratios of measured object radius and image width. The average FOV was 32x26 arcmin corresponding to F/3.3 indicating inline use of the Celestron F/6.3 and Atik 0.5x focal reducers. Images were made before acquiring an auto-guider and thus are unguided.  The AVX mount's all star polar alignment combined with relatively short exposures yielded nice round star images. 

Messier 103

NGC 1647

NGC 1807

NGC 1817

NGC 2129

NGC 2158

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