NGC7635, a SII, Ha, OIII picture | Niels V. Christensen

Niels V. Christensen
Location of photo
Copenhagen Denmark
Date/Time of photo
July-August 2009.
Taken with Meade LX200ACF 16" mounted on wedge, Optec NextGEN WideField 0.5X reducer and SBIG ST-8XME used.
NGC7635, a Ha (LUM), SII, Ha, OIII picture using tone mapping for narrowband color combine technique. Exposure time SII,Ha,OIII~12*10min. each. Dark, flat frame subtraction done on each sub-frames and Astronomic filters used. The picture is cropped a little due to that the raw frames were taken during three different nights during July and August 2009.
All comments must follow the Sky & Telescope Terms of Use and will be moderated prior to posting. Please be civil in your comments. Sky & Telescope reserves the right to use the comments we receive, in whole or in part, and to use the commenter’s username, in any medium. See also the Terms of Use and Privacy Policy.


This site uses Akismet to reduce spam. Learn how your comment data is processed.