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Contains:  NGC 5477, NGC 5474, NGC 5473, M 101, NGC 5457
Getting plate-solving status, please wait...
M101 - a Pinwheel in 5 subs, 





    
        

            Ewam
M101 - a Pinwheel in 5 subs

M101 - a Pinwheel in 5 subs

Technical card

Resolution: 4871x3047

Dates:July 14, 2015

Frames: 34x120"

Integration: 1.1 hours

Avg. Moon age: 28.00 days

Avg. Moon phase: 2.62%

Astrometry.net job: 783377

RA center: 210.816 degrees

DEC center: 54.305 degrees

Orientation: -85.129 degrees

Field radius: 0.811 degrees

Locations: Le Terme, Peyzac-le-Moustier, Dordogne, France

Description

In april I caught 29 subs of M101 : 120 sec @ 2000 iso under a less than perfect Belgium sky.
In south of France I wanted to improve this work but as it wasn't a priority in my shopping list, I only gave it a try with 1 x 120 + 4 x 150 sec @ 3200 iso. I used 65% of these with 35% of the old session in order to reduce noise especially on the background. I hoped to get at least 25 frames (subs) here in Portugal but it's been cloudy for the past 4 days...
Enjoy patience and clear skies ;-)
B VERSION : reworked the color balance and sharpness... until more subs and Ha...

Comments

Author

Ewam
Ewam
License: None (All rights reserved)
5320
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Revisions

  • M101 - a Pinwheel in 5 subs, 





    
        

            Ewam
    Original
  • Final
    M101 - a Pinwheel in 5 subs, 





    
        

            Ewam
    B

Sky plot

Sky plot

Histogram

M101 - a Pinwheel in 5 subs, 





    
        

            Ewam