All Images Copyright Rod Gallagher Click on image to see full size
M21 -- Webb's Cross
Object
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Type |
Open Cluster |
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Constellation |
Sagittarius |
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Distance |
3,930 light years |
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Magnitude |
6.5 |
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Size |
14.0 arc-min |
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Image
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Date |
2013-05-08 |
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Place |
Texas Star Party |
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Exposure Data |
RGB 30:30:30 mins @ -15C |
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R 6x5, G 6x5, B 6x5 |
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Notes |
All filters binned 1x1, Created Pseudo Luminance Layer from RGB |
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Equipment
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Optics |
Takahashi FSQ-106N |
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Focal Length |
530 mm @f/5.0 |
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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 |
TheSkyX, CCDSoft, CCDAutopilot5, CCDStack2+, PhotoShop CS6, PixInsight, BlurXTerminator |
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Reprocessed on 02/05/2023 |