All Images Copyright Rod Gallagher Click on image to see full size
NGC 6888 -- Crescent Nebula
Object
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Type |
Emission Nebula |
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Constellation |
Cygnus |
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Distance |
5,000 light years |
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Magnitude |
7.4 |
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Size |
18 x 12 arc-min |
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Notes |
Also known as Caldwell 27, Sharpless 2-105 |
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Image
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Date |
2014-09-21thru25 and 2015-10-09thru16 |
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Place |
Okie-Tex Star Party (2014) and Bixhoma Observatory (H33) (2015) |
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Exposure Data |
Ha-OIII-CRGB 660:750:285:210:210:210 mins @ -10C |
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Ha 44x15, OIII 50x15, C 57x5, R 42x5, G 42x5, B 42x5 min |
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Notes |
All filters binned 1x1 |
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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 |
Paramount ME |
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Camera |
SBIG ST-10XME |
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Focuser |
RoboFocus |
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Filters |
CFW-10, Astrodon LRGB, Ha (3nm), OIII (3nm) |
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Software |
TheSkyX, CCDSoft, CCDAutopilot5, CCDStack 2+, PixInsight, PhotoShop CS6 |
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Reprocessed on 07/17/2023 |