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Changes between Version 5 and Version 6 of GPC1_Camera_Artifacts_Bathtub_Rings


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Timestamp:
Feb 25, 2011, 9:51:40 AM (15 years ago)
Author:
eugene
Comment:

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  • GPC1_Camera_Artifacts_Bathtub_Rings

    v5 v6  
    77=== Residual Bathtub Ring-like Effect ===
    88
    9 There is a pattern visible on at least ota36 which has an appearance very similar to the bathtub rings.  This was seen by Heather in magic tests.  The examples we have appear to be present only when video is occurring on ota36.  In the one example shown here, the feature appears in the first science image of the night with video (o5555g0031o) and continues for roughly an hour. 
     9There is a pattern visible on at least ota36 which has an appearance very similar to the bathtub rings.  This was seen by Heather in magic tests.  The examples we have appear to be present only when video is occurring on ota36.  In the one example shown here, the feature appears in the first science image of the night with video (o5555g0031o) and continues for roughly an hour.  The images below show the datastore jpegs for images from night 5555.  The first 7 images are in sequence, and the pattern is visible in those jpegs which contain a video cell.  The pattern evolves with time.  The pattern continues until after the 50-54 series.  Image 50 shows the pattern more strongly than image 49.  The pattern gets weak through the 50s, but continues to trigger magic, even though the datastore appearance is weak. 
    1010
    1111|| o5555g0031o || o5555g0032o || o5555g0033o ||