Common Artifacts
Some of the unusual things you might see that may or may not affect a classification.
14 conversations
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Example of "Object Moves off Cross Hairs"
18 posts / 8 participants
Last post by Garlandiana
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12 posts / 4 participants
Last post by lrebull
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2 posts / 1 participants
Last post by kmasterdo
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4 posts / 2 participants
Last post by TED91
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Possible Example of Airplane Trails
6 posts / 3 participants
Last post by TED91
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1 posts / 1 participants
Last post by jdebes
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A weird object/artifact doing a 90°angle.
posts / 1 participants
Last post by artman40
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13 posts / 5 participants
Last post by onetimegolfer
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Contaminated by planetary nebula
2 posts / 1 participants
Last post by lrebull
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Why are the SDSS images black?
3 posts / 3 participants
Last post by jdebes
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1 posts / 1 participants
Last post by jdebes
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Why is there a black blob/circle in DSS images?
4 posts / 2 participants
Last post by marckuchner
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Example of Star superimposed on a Galaxy
3 posts / 2 participants
Last post by DNiergarth
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When an object is so faint that background noise dominates
2 posts / 2 participants
Last post by lrebull