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Contains:  M 74, NGC 628
Getting plate-solving status, please wait...
M74 - 21 Jan 2017, 


            Geof Lewis
M74 - 21 Jan 2017

M74 - 21 Jan 2017

Technical card

Resolution: 3161x2329

Dates:Jan. 20, 2017Jan. 21, 2017

Astronomik B 1.25" Type IIc: 3x600" -10C bin 1x1
Astronomik G 1.25" Type IIc: 3x600" -10C bin 1x1
Astronomik L 1.25" Type IIc: 8x600" -10C bin 1x1
Astronomik R 1.25" Type IIc: 3x600" -10C bin 1x1

Integration: 2.8 hours

Darks: ~20

Flats: ~20

Flat darks: ~20

Bias: ~20

Avg. Moon age: 23.10 days

Avg. Moon phase: 40.02% job: 1479009

RA center: 24.201 degrees

DEC center: 15.789 degrees

Pixel scale: 0.432 arcsec/pixel

Orientation: 1.483 degrees

Field radius: 0.236 degrees

Data source: Backyard


My first attempt at the M74 galaxy. A night of more issues than I care to remember resulting in almost half of the data being unusable. The L data is not too bad, but the little RGB data was very poor. I was hoping to get another chance to add better data, but that will be for another year so I tried to see what I could extract from what I have. I think I processed the hell out of it.....



Geof Lewis
License: None (All rights reserved)

Sky plot

Sky plot


M74 - 21 Jan 2017, 


            Geof Lewis