Contains: NGC 772, NGC 770, NGC 309
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NGC772 and NGC770 (ARP78) in Aries

Technical card

Resolution: 3279x2481

Dates: Nov. 11, 2017

Frames: 40x600"

Integration: 6.7 hours

Avg. Moon age: 22.80 days

Avg. Moon phase: 43.12% job: 1883265

RA center: 29.731 degrees

DEC center: 19.061 degrees

Pixel scale: 0.616 arcsec/pixel

Orientation: 270.036 degrees

Field radius: 0.352 degrees

Locations: Burlage Garten, Burlage, Germany


9 integrations of 10 minutes each, no flats used.
This is a nice one, need to shoot the colour data and some more L soon! (And flats as well...)

The final version is 18 x L, 9 x R, 7 x G and 6 x B, I used only L-flats to correct all colours...
But it looks all right now.

Unfortunately the seeing was not that great, but there was not much choice this winter.



Albert van Duin



I used flats to calibrate the images now


Added some luminance, and RGB. Seeing was far from optimal, flats not good as well...


Final version with trick flats, 18 x L, 9 x R, 7 x G, 6 x B = 400 minutes

Sky plot

Sky plot


NGC772 and NGC770 (ARP78) in Aries, 


        Albert van Duin