Contains:  M 101, NGC 5457
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M101 "The Pinwheel Galaxy." In Ursa Major, 





    
        

            Pat Rodgers
M101 "The Pinwheel Galaxy." In Ursa Major

M101 "The Pinwheel Galaxy." In Ursa Major

Technical card

Resolution: 1349x976

Dates:April 19, 2018

Frames:
Baader B 1.25'' CCD Filter: 18x300" -12C bin 1x1
Baader G 1.25'' CCD Filter: 18x300" -12C bin 1x1
Baader Ha 1.25" 7nm: 7x600" -12C bin 1x1
Baader UV/IR Cut Filter L 1.25'' CCD Filter: 30x600" -12C bin 1x1
Baader R 1.25'' CCD Filter: 18x300" -12C bin 1x1

Integration: 10.7 hours

Darks: ~29

Flats: ~39

Bias: ~149

Avg. Moon age: 3.68 days

Avg. Moon phase: 14.56%

Bortle Dark-Sky Scale: 6.00

Temperature: 20.00

Astrometry.net job: 2031589

RA center: 210.760 degrees

DEC center: 54.394 degrees

Pixel scale: 1.328 arcsec/pixel

Orientation: 142.438 degrees

Field radius: 0.307 degrees

Locations: Un-stable Observatory, back garden., Huddersfield, West Yorkshire, United Kingdom

Data source: Unknown

Description

First clear spell for a long while. 15th February was my last imaging session and any clear patches since, have been littered with rain clouds.
Rev A: LRGB
Rev B: HaL HaRGB

Comments

Author

Pat_Rodgers
Pat Rodgers
License: None (All rights reserved)
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Revisions

  • M101 "The Pinwheel Galaxy." In Ursa Major, 





    
        

            Pat Rodgers
    Original
  • M101 "The Pinwheel Galaxy." In Ursa Major, 





    
        

            Pat Rodgers
    C
  • Final
    M101 "The Pinwheel Galaxy." In Ursa Major, 





    
        

            Pat Rodgers
    D

D

Just a colour boost to the RGB and harder sharpening before combining into LRGB

Sky plot

Sky plot

Histogram

M101 "The Pinwheel Galaxy." In Ursa Major, 





    
        

            Pat Rodgers

In these public groups

Fast Newtonians
UK Astro-Imaging