Hi All,
As some of you may know, I am testing out a QHY8 on my scope and am having difficulty processing the FITS subs as well as the RAW CR2 files from the DSLR.
I have uploaded 2 sets of data taken from the same night (first was 20 mins with the QHY8) and then the DSLR was put in to take 20 mins of subs while the scope was pointing at M83.
Vignetting is horrible on both, I am thinking maybe the primary is too low in the tube as I recall setting it right down on the screws when I took out the longer screws before I fixed the DSLR focus problem with a low profile 2" adaptor....? Any advice on this would be good.
So, what I am asking is if anyone can use their skills to play with the data and remove the vignetting, stretch, process and get a result so I can determine the pros and cons of the QHY8 or the sticking with the DSLR moving forward.
I am planning on a light box as well as a peltier coolbox for the DSLR perhaps to remove some of the noise, but obviously, using the DSLR for so long its been easier to capture subs as Backyard EOS is quite schmick and I know what I am doing with ISO and sub length etc....
The files are listed below, anyone who wants to play around with them, please feel free and if possible, document the steps and software used so I can try to reproduce your results at my end.
No flats, or darks are in the stacks or in the ZIP files as I wanted the comparison between the two cameras to be of 20 mins of SIMILAR data without any complications like different darks or bias etc....
Excuse the noise, the dust and the vignetting, I am working on fixing these, the main point of this exercise is trying to process similar data from the two cameras the same way and see which one looks better.
Obviously, I have the DSLR already, so I need to justify the expense of a $1500-$2000 camera based on its results with this side by side using the same scope and same data capture operator.
I look forward to some help and hopefully some results and tips please...
Files:
Zip of 10 x 2 min Canon CR2 data (60mb)
http://dl.dropbox.com/u/70660066/2nd...mins%20CR2.zip
Zip of 4 x 5 min QHY FITS data (125mb)
http://dl.dropbox.com/u/70660066/2nd...2020%20min.zip
My stacked tiff for Canon from DSS (92mb)
http://dl.dropbox.com/u/70660066/2nd...0no%20dark.TIF
My stacked tiff for QHY from DSS (143mb)
http://dl.dropbox.com/u/70660066/2nd...0no%20dark.TIF
Cheers
Chris