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M3 NGC5227- Experimental tracking calibration shot


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I found some old unprocessed data last year that I used to calibrate the tracking on my mount. The stars are not exact but I might as well share it with you all.

I don't normally shoot globular clusters but I might have a go in the future. The image shows little colour other than blue stars. I wonder if M3 has any as a stretch shows the stars as very blue but I thought globulars had old stars so they would not normally be all blue.



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