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Contains:  M 101, NGC 5457, NGC 5473, NGC 5474, NGC 5485
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Widefield Pinwheel & NGC 5474, 


            Bradley Hargrave
Widefield Pinwheel & NGC 5474
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Widefield Pinwheel & NGC 5474

Technical card

Dates:April 28, 2019

Frames: 1x50460"

Integration: 14.0 hours

Avg. Moon age: 23.54 days

Avg. Moon phase: 35.39%

Basic astrometry details job: 2679187

RA center: 14h 3' 48"

DEC center: +54° 6' 28"

Pixel scale: 1.979 arcsec/pixel

Orientation: 185.293 degrees

Field radius: 1.400 degrees

Resolution: 4000x3152

Data source: Backyard


Lum 90sec x 185 subs
Ha 600s x 17
R 120s x 76
G 120s x 53
B 120s x 76

Always improving. I managed to get tight focus across all my filters. The moonlite focuser is dialed in, and the automatic meridian flip in SGP is configured now and working wonders. Very nice!

I was being careful with NR and tedious with DBE values to remove gradients. I still need to figure out how to get my star colors under control after a saturation curves boost. I pushed it to the limits and getting some color rings and slightly odd colors on some stars. I will focus my attention to this on my next integration.

Clear skies



Bradley Hargrave
License: None (All rights reserved)


  • Final
    Widefield Pinwheel & NGC 5474, 


            Bradley Hargrave


Description: Color saturation, curves adjust

Sky plot

Sky plot


Widefield Pinwheel & NGC 5474, 


            Bradley Hargrave