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Pinwheel Galaxy - M101, 



    
        

            Thomas Richter
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Pinwheel Galaxy - M101

Technical card

Imaging telescopes or lenses: GSO 8" f/5 Newton

Imaging cameras: ZWO ASI 183 MM PRO

Mounts: SkyWatcher NEQ6 Pro Goto

Guiding telescopes or lenses: GSO 8" f/5 Newton

Guiding cameras: Astrolumina Alccd5L-IIc

Focal reducers: Pal Gyulai GPU Aplanatic Koma Korrector 4-element

Software: PhotoShop CS5  ·  PHD2 Guiding  ·  FitsWork 4  ·  DeepSky Stacker Deep Sky Stacker 3.3.4  ·  CCDCiel

Filters: Baader R 1.25'' CCD Filter  ·  Baader B 1.25'' CCD Filter  ·  Baader G 1.25'' CCD Filter  ·  Baader L 1.25'' Filter

Accessory: TSOptics TS Off Axis Guider - 9mm


Dates:April 23, 2020

Frames:
Baader B 1.25'' CCD Filter: 8x300" (gain: 53.00) -20C bin 1x1
Baader G 1.25'' CCD Filter: 8x300" (gain: 53.00) -20C bin 1x1
Baader L 1.25'' Filter: 18x300" (gain: 53.00) -20C bin 1x1
Baader R 1.25'' CCD Filter: 8x300" (gain: 53.00) -20C bin 1x1

Integration: 3.5 hours

Darks: ~37

Flats: ~31

Flat darks: ~100

Avg. Moon age: 0.35 days

Avg. Moon phase: 0.14%


Astrometry.net job: 3486651

RA center: 14h 3' 8"

DEC center: +54° 21' 35"

Pixel scale: 0.494 arcsec/pixel

Orientation: -42.866 degrees

Field radius: 0.421 degrees


Resolution: 3569x4996

Locations: Kreben, Kreben(Wilhermsdorf), Bayern, Germany

Data source: Traveller

Description

Object description (wikipedia.org) :
The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on spiral galaxy distanced 21 million light-years (six megaparsecs) away from Earth in the constellation Ursa Major. Discovered by Pierre Méchain on March 27, 1781, it was communicated to Charles Messier who verified its position for inclusion in the Messier Catalogue as one of its final entries.

On February 28, 2006, NASA and the European Space Agency released a very detailed image of the Pinwheel Galaxy, which was the largest and most detailed image of a galaxy by Hubble Space Telescope at the time. The image was composed of 51 individual exposures, plus some extra ground-based photos.

Comments

Author

superelch
Thomas Richter
License: None (All rights reserved)
5616
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Revisions

    Pinwheel Galaxy - M101, 



    
        

            Thomas Richter
    Original
    Pinwheel Galaxy - M101, 



    
        

            Thomas Richter
    B
  • Final
    Pinwheel Galaxy - M101, 



    
        

            Thomas Richter
    C

B

Description: decreased saturation (blue)

C

Description: modified color

Sky plot

Sky plot

Histogram

Pinwheel Galaxy - M101, 



    
        

            Thomas Richter