Padraic M Posted May 30, 2021 Share Posted May 30, 2021 First light both for a new setup using a C8 SCT and an OAG, and first time imaging a globular cluster. Clear skies in B2, but with a lot of moisture in the air. 10x 150s each of B,G,R + superluminance. 1hr 15min total. Celestron C8 with 0.63x FF/FR on a HEQ5 Pro - 1350mm FL. Celestron SCT focus motor with NINA autofocus for each filter. Imaging: ASI160MM Pro @ 20c. Baader RGB filters. Guiding: OVL OAG, ASI290MM Mini. Software: NINA, PHD2, SharpCap PA. AstroPixelProcessor, Gimp. 30x darks, flats, dark flats. I need to take new flats of the green channel as I haven't calibrated out that great big donut. Also, stars are a bit clunky, and the shapes in the corners are a bit beany. Is this what can be expected from a C8 with FF, or do I need to collimate? 6 Quote Link to comment Share on other sites More sharing options...
PeterBolt Posted May 30, 2021 Share Posted May 30, 2021 Really nice 👍 1 Quote Link to comment Share on other sites More sharing options...
Padraic M Posted May 30, 2021 Author Share Posted May 30, 2021 Version 2 - I shot a new set of sky flats for each filter and reprocessed as RGB. I think this is a lot better. 5 Quote Link to comment Share on other sites More sharing options...
paul Posted May 30, 2021 Share Posted May 30, 2021 You've gone pretty deep there and the fainter stars are nicely crisp👍 1 Quote Link to comment Share on other sites More sharing options...
MarkAR Posted June 18, 2021 Share Posted June 18, 2021 Version 2 is much better. M13 is very bright might be worth shorter exposures next time which would reduce the glow from the big bright stars and tighten things up a little. Quote Link to comment Share on other sites More sharing options...
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