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Old 12-07-2016, 10:31 AM
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strongmanmike (Michael)
Highest Observatory in Oz

strongmanmike is offline
 
Join Date: May 2006
Location: Canberra
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Quote:
Originally Posted by Stevec35 View Post
Thanks Paul. It's artificially brightened a bit. Almost invisible on the unmodified data.
What do you mean by artificially brightened?

For the faint halos I have revealed, I create several versions where I have stretched the begeezus out of the faint data to varying degrees and then I (very) carefully blend just the faint stuff revealed, back into a more normally processed version, I then use targeted noise reduction on the layered in heavily stretched data to make it a bit smoother.....this is not artificial but more like enhanced. I think as long as the stretching done before the layering is done globally on the raw data and not "artificially" targeted by say, lassoing an arbitrary area, it is a valid representation, particularly for scientific purposes.

Mike
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