AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.
I agreeImaging telescope or lens:TEC-140
Imaging camera:QSI 690 WSG-8
Mount:10 Micron GM2000 HPS II UP
Guiding camera:Starlight Xpress Lodestar X2
Software:Adobe Photoshop 6 CS, Main Sequence Software Sequence Generator Pro , Pixinsight 1.8
Filters:Astrodon Ha 3nm, Astrodon Tru-Balance LRGB E-Series Gen 2 Blue, Astrodon Tru-Balance LRGB E-Series Gen 2 Green, Astrodon Tru-Balance LRGB E-Series Gen 2 Red, Astrodon Tru-Balance LRGB E-Series Gen 2 Luminance
Resolution: 3316x2661
Dates:March 12, 2019
Frames:
Astrodon Tru-Balance LRGB E-Series Gen 2 Blue: 30x600" bin 1x1
Astrodon Tru-Balance LRGB E-Series Gen 2 Green: 30x600" bin 1x1
Astrodon Ha 3nm: 20x1200" bin 1x1
Astrodon Tru-Balance LRGB E-Series Gen 2 Luminance: 65x600" bin 1x1
Astrodon Tru-Balance LRGB E-Series Gen 2 Red: 30x600" bin 1x1
Integration: 32.5 hours
Avg. Moon age: 5.44 days
Avg. Moon phase: 29.94%
Astrometry.net job: 2581647
RA center: 210.795 degrees
DEC center: 54.369 degrees
Pixel scale: 0.744 arcsec/pixel
Orientation: 89.534 degrees
Field radius: 0.439 degrees
Locations: E-EyE, Fregenal de la Sierra, Extremadura, Spain
Data source: Unknown
Messier 101 (NGC 5457) is a face on spiral galaxy 21.8 million light years distant in the constellation of Ursa Major. It is 184,000 light years in diameter with an apparent size of 28.8' x 26.9'.
The galaxy was discovered by Pierre Méchain on 27 March 1781, who described it a "Nebula without star, very obscure and pretty large, 6' to 7' in diameter".
[Information from: Atlas of the Messier Objects; Stoyan et al; Cambridge University Press 2008 (English edition)]
M101 was photographed between 13 February and 12 March 2019 from an imaging rig in Spain that is privately-owned and remotely-operated by Barry Wilson and me.
Capture details are as follows:
Telescope: TEC140
Camera: QSI 690
Filters: Astrodon
Mount: 10 Micron GM2000HPS
Ha: 20 x 1200s
Lum: 65 x 600s
Red: 30 x 600s
Green: 30 x 600s
Blue: 30 x 600s
A total of 32 hours and 30 minutes exposure.
Data: Steve Milne & Barry Wilson
Processing: Steve Milne
Minor tweaks to colour and saturation.
A very slight 'lift' to the faint stuff.
| Entre Encinas y Estrellas (e-EyE) |
| The refractors! |
Comments