All Images Copyright Rod Gallagher Click on image to see full size
NGC 6638 -- Globular Cluster
Object
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Type |
Globular Cluster |
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Constellation |
Sagittarius |
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Distance |
31.3k light years |
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Magnitude |
9.5 |
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Size |
2.0 arc-min |
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Image
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Date |
2008-07-21 |
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Place |
Bixhoma Observatory (H33) |
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Exposure Data |
Lum 10 mins @ -5C |
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Lum 10x1 min |
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Notes |
All filters binned 1x1 |
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Equipment
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Optics |
Meade 12" RCX-400 |
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Focal Length |
1500 mm @f/5 (f/8 with 6.3 focal reducer) |
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Mount |
RCX-400 on Milburn wedge |
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Camera |
SBIG ST-7XME w/AO7 |
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Focuser |
JMI Focuser with RoboFocus |
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Filters |
CFW-8, Astrodon LRGB |
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Software |
TheSky6, FocusMax, CCDAutopilot4, PixInsight, PhotoShop CS6 |
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Reprocessed on 12/19/2022 |