Search found 3 matches

by beepboop
Tue Apr 17, 2007 3:08 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Red Square Nebula (APOD 16 April 2007)
Replies: 25
Views: 15761

Re: red square nebula image has artifacts

Perhaps you are not accustomed to looking at images which have been processed to enhance specific detail ... What structures shown in the image do you see as possibly false, and how would that affect the interpretation that we are seeing two cones of material? I don't doubt the validity of the conc...
by beepboop
Mon Apr 16, 2007 10:56 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Red Square Nebula (APOD 16 April 2007)
Replies: 25
Views: 15761

Re: red square nebula image has artifacts

[quote="Chris Peterson"] This image has obviously been heavily processed to bring out detail, and such processing often emphasize otherwise more subtle optical artifacts like these.[/quote] I would conclude that the details of the image which we are looking for are as subtle as the optical...
by beepboop
Mon Apr 16, 2007 4:13 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Red Square Nebula (APOD 16 April 2007)
Replies: 25
Views: 15761

red square nebula image has artifacts

This image has a lot of distortion (stars near the edges are elongated), and five of the bright stars show hexagonal spike pattern, possibly artifact of the optics. Can anybody comment on these artifacts?