All Images Copyright Rod Gallagher Click on image to see full size
NGC 891 -- Spiral Galaxy
Object
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Type |
Spiral Galaxy |
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Constellation |
Andromeda |
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Distance |
27.3M light years |
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Magnitude |
10.8 |
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Size |
13.5 x 2.5 arc-min |
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Notes |
Also known as Caldwell 23, Silver Sliver Galaxy |
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Image
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Date |
2007-08-14 |
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Place |
RMCC Observatory (Mounds) |
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Exposure Data |
LRGB 80:45:45:45 mins @ -5C |
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Lum 16x5, Red 9x5, Green 9x5, Blue 9x5 min |
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Notes |
RGB filters binned 2x2 |
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Equipment
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Optics |
Takahashi TOA-150 |
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Focal Length |
1100 mm @f/7.3 |
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Mount |
Takahashi NJP |
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Camera |
SBIG ST-10XME |
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Focuser |
RoboFocus |
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Filters |
CFW-10, Astrodon LRGB |
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Software |
TheSky6, CCDSoft, CCDAutopilot3, CCDStack 2+, PixInsight, PhotoShop CS6 |
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Reprocessed on 07/17/2023 |