Huge white blobs with black

[allisonlee]

Does anyone know what the huge white blobs are with the black lines/blobs in the middle? I don't think they are transients because of the black lines/spots.

[kmasterdo]

See here (http://cosmoquest.org/forum/showthread.php?651-Questions-and-Suggestions-for-the-CosmoQuest-team/page6) for an explanation.

[browolf]

Does anyone know what the huge white blobs are with the black lines/blobs in the middle? I don't think they are transients because of the black lines/spots.

You can read about that on the tutorial page: http://cosmoquest.org/Ice_Investigators:_Tutorials#Image_Subtraction

Also you already asked this on another thread!