Description:
Very faint spheroidal dwarf galaxy in the Local Group of galaxies, discovered only in 1954, it is a satellite of our Milky Way, a member of the Local Group 280,000 light years distant. It has a very high mass to luminosity ratio, suggesting vast quantities of dark matter. It is nearly dust free, containing very little interstellar matter. It is one of the faintest known galaxies. I've never been able to determine the boundaries of this galaxy, though NED lists it at 35.5 x 24.5'
This was a mixed focal length effort combining recently taken luminance data from 9.25 Edge with older color data from the SVR 90.
Luminance Data:
Imaging Camera: QSI640wsg
Imaging Scope: Celestron 9.25"Edge HD at f/7
Guide Camera: SX Lodestarx2
Mount: Avalon M-Uno Fast Reverse
Filters: Astrodon Gen II LRGB
Exposure: 4 hours luminance, 60 second subs
Capture: APT
Processing: CCD Stack and PS CC
Date: 6/17/20
Sky conditions: Below average seeing, bortle white skies, SQM 17.8 mag/arc-sec2
Location: My front driveway. Morristown, NJ
Color Data:
Imaging camera: QSI 540 wsg.
Imaging Scope: SVR90T raptor
Mount: Meade 10" LX200R
Filters: Astrodon Gen II LRGB
Exposure: Two hours each RGB, unbinned. 8 minute subs
Processing: CCD stack and Photoshop CS2
Dates: May 20, 2014
Location: My front driveway, Morristown, NJ
Uploaded: ...
| Suburban Astrophotography |
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