Guest Mr T Posted September 9, 2013 Share Posted September 9, 2013 M33 from 2nd September 2013. About an hours worth of 2 and 3 minute subs, taken with Canon 450D and 300mm lens, piggy backed on top of my scope. Can't seem to capture any of the red regions, can someone explain why this could be? Thanks, Mark M33 Pinwheel Galaxy by Mark Tooke, on Flickr Link to comment Share on other sites More sharing options...
Guest ollypenrice Posted September 10, 2013 Share Posted September 10, 2013 There is red in the stars. The image is quite heavily black clipped, which will have discarded a lot of data. You could try a restretch being careful not to move the black point slider too far to the right. Here's a demo of clipping/not clipping. Bigger version of the image is here. http://ollypenrice.smugmug.com/Other/Takahashi-EM200TEC140/i-NzVJLPW/0/X3/Black%20clipping.-X3.jpg For me a healthy background sky as measured in Photoshop has a value of around 23. Olly Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now