mswhin63
03-05-2010, 03:28 PM
Hi All,
This is the story of my poor old DOB and DSLR images for a mosaic.
It seems a single image of the moon seems to be fine, but in truth I don't really know.
I decided a couple of nights ago to insert my 3 x barlow into the camera and then into the scope and took a series of 74 images with the DSLR.
The problem seems to be that I am unable to match the images together. Most seem to match with the exception of longest parts of the image. I have reduced the images to 2155 x 1437 in the hope to get a massive image but as I try to line them up sections on the extremes seem to be out by 20 - 30 pixels.
The images by the way have been altered by Registax prior to mosiac stitching too.
What could be the problem be (from experience):
Mirror extremes distorting the wider parts of the image?
Barlow distortions? ( if so damn)
Registax distorting image after processing? (will check this out)
Atmospherics?
I also seem to have a similar problem in the past with the CCD imaging but a lot less extreme.
Apart from Registax is there a way of isolating the issue/s?
1st image without barlow, 2nd image with barlow. I know it may be difficult to spot the difference but if you see the 25MB image it is very clear.
This is the story of my poor old DOB and DSLR images for a mosaic.
It seems a single image of the moon seems to be fine, but in truth I don't really know.
I decided a couple of nights ago to insert my 3 x barlow into the camera and then into the scope and took a series of 74 images with the DSLR.
The problem seems to be that I am unable to match the images together. Most seem to match with the exception of longest parts of the image. I have reduced the images to 2155 x 1437 in the hope to get a massive image but as I try to line them up sections on the extremes seem to be out by 20 - 30 pixels.
The images by the way have been altered by Registax prior to mosiac stitching too.
What could be the problem be (from experience):
Mirror extremes distorting the wider parts of the image?
Barlow distortions? ( if so damn)
Registax distorting image after processing? (will check this out)
Atmospherics?
I also seem to have a similar problem in the past with the CCD imaging but a lot less extreme.
Apart from Registax is there a way of isolating the issue/s?
1st image without barlow, 2nd image with barlow. I know it may be difficult to spot the difference but if you see the 25MB image it is very clear.