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Contains:  M 1, Crab nebula, NGC 1952
Getting plate-solving status, please wait...
M1 (Crab Nebula) - 19 Jan 2017, 


            Geof Lewis
M1 (Crab Nebula) - 19 Jan 2017

M1 (Crab Nebula) - 19 Jan 2017

Technical card

Resolution: 3126x2304

Dates:Jan. 19, 2017

Astronomik B 1.25" Type IIc: 3x600" -10C bin 1x1
Astronomik G 1.25" Type IIc: 4x600" -10C bin 1x1
Astronomik L 1.25" Type IIc: 7x600" -10C bin 1x1
Astronomik R 1.25" Type IIc: 3x600" -10C bin 1x1

Integration: 2.8 hours

Darks: ~20

Flats: ~18

Flat darks: ~20

Bias: ~20

Avg. Moon age: 21.76 days

Avg. Moon phase: 54.14%

Bortle Dark-Sky Scale: 3.00

Temperature: -2.00 job: 1416041

RA center: 83.622 degrees

DEC center: 22.012 degrees

Pixel scale: 0.433 arcsec/pixel

Orientation: -179.249 degrees

Field radius: 0.233 degrees

Data source: Backyard


First outing for my new Optec F7 telecompressor with the C14 and QSI583 camera. I found this very difficult to process right from stacking in MaximDL through to the various process steps in ImagesPlus and Photoshop. I suspect that the focus was not good for some of the different filters and certainly I had to discard several subs for poor star shape.



Geof Lewis
License: None (All rights reserved)

Sky plot

Sky plot


M1 (Crab Nebula) - 19 Jan 2017, 


            Geof Lewis