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Contains:  Sunflower galaxy, M 63, NGC 5055
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M63 The Sunflower Galaxy - collaboration with Gnomus

Technical card

Resolution: 2196x2736

Dates:April 2, 2017

Frames:
Astrodon 5nm Ha: 11x1200" bin 1x1
Astrodon E-Series Blue filter: 13x600" bin 1x1
Astrodon E-Series Green filter: 13x600" bin 1x1
Astrodon E-Series Red filter: 13x600" bin 1x1
Astrodon Luminance E-Series: 16x60" bin 1x1
Astrodon Luminance E-Series: 36x600" bin 1x1

Integration: 16.4 hours

Avg. Moon age: 6.00 days

Avg. Moon phase: 35.53%

Astrometry.net job: 1524181

RA center: 198.959 degrees

DEC center: 42.042 degrees

Pixel scale: 0.881 arcsec/pixel

Orientation: 178.103 degrees

Field radius: 0.430 degrees

Locations: Home observatory, Totnes, Devon, United Kingdom

Description

Steve and I began this collaboration on the 1st February when I captured the first RGB subs, then we have haltingly acquired the data whenever conditions allowed: Steve the Luminance and Ha, me the RGB, all binned 1 x 1. It was important to capture all the data during the best seeing - not the best winter for that as we all know - however, especially the RGB at the maximum altitude too, which meant much later in the evening, often when Devon was clouding out. So it wasn't until Saturday 2nd April that I could finally capture the last few RGB subs having discarded one hour of each for poor seeing. Steve had a slow start with poor weather but had a burst of speed towards the end of March with a few clear nights on the trot. It was exciting sharing the calibrated data - and we were both delighted to see the results.

Messier 63 has relatively low surface brightness and has recently shown some interesting tidal and halo features - need big scope and dark skies to reveal these. We are both very pleased to have captured the distinctive clumpy texture and rich colouring. Processing required delicate treatment for some elements and some brutish welly for others to help coax the subject out from the background. Details: Scopes & CCDs - SW Esprit 120mm with QSI690 and WO FLT132 with QSI683 both at F7 Mounts - Mesu 200 and 10 Micron GM1000HPS Filters - Astrodon Software - we both use the magnificent SGP, PI and PS Data - 36 x 600s Lum; 16 x 60s Lum; 11 x 1200s Ha; 13 x 600s each R, G and B. Total integration a shade over 16hrs.

This is my processed version, completely done in PI.

Thank you once again to Steve for good humour, patience, a sense of wonder and fun.

Comments

Author

Barry-Wilson
Barry Wilson
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Full Frame.

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M63 The Sunflower Galaxy - collaboration with Gnomus, 





    
        

            Barry Wilson

In these public groups

UK Astro-Imaging