The O.A.S. Astrophotography Gallery

A place for members' images...

Click to view full size image

NGC6888 Crescent Nebula - reprocessed

Crescent nebula and starfield showing some of the faint nebulosity around it. The Nebula has been produced by the Wolf-Rayet star in the center of the nebula.

20 * 300s unguided with the Sky90 + F/4.5 reducer/flattener. No Bias/ Flat or Darks.

After looking at some others on the web I decided that it needed a second look. It seems I got the black level far too high in Maxim so I've reprocessed to bring out the nebulosity that was hidden before.

Rate this file (Current rating : 2.3 / 5 with 4 votes)
File information
Filename:Group2-1a_ddp.jpg
Album name:RobertM / Nebulae
Rating (4 votes):22222
Link-words:Nebula
Image date, time and location:29th July 2008
Telescope aperture and focal ratio:Sky 90 operating at approx f/4.5
Camera and filters used:SXV-H9 and Astronomik 13nm Ha filter
Processing applied:Stacked/DDP in MaximDL and levels/curves +very slight sharpening and 0.2 blur applied in PS
Filesize:1021 KiB
Date added:Aug 06, 2008
Dimensions:1392 x 1040 pixels
Displayed:102 times
URL:http://gallery.orpington-astronomy.org.uk/displayimage-567.html
Favorites:Add to Favorites