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Old 23-09-2014, 03:03 PM
Placidus (Mike and Trish)
Narrowing the band

Placidus is offline
 
Join Date: Mar 2011
Location: Euchareena, NSW
Posts: 3,719
Beautiful, razor sharp, no hint of mosaic structure.

Ken, is the background awash with almost uniformly strong [OIII] over such a large distance, or is it reflection nebulosity? If so, it would be much stronger in the blue filter than the [OIII]. I have no idea, just interested.
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