Hi Chris,
Another very nice effort, don't think there is anything wrong with the colour. Although the image is dim there is some nice detail within it.
I think 30 sec's at 30 fps is the problem contributing to how dim it appears.
Don't be afraid to really push the gain, that will make it brighter, and try extending the capture out to 2 min's. At 30 fps that will give you 3600 frames, depending on the quality of the seeing, try for a stack of the best 1000 frames. This will give you a lot more signal.
You also may have to try a slightly slower exposure rate.
Looking at the quality of the two images you have posted, there is nothing wrong with your collimation or focus, you just need to experiment with;
1) longer captures, with the colour chip that you have you should be able to capture for 2 min's and still resolve any storm activity or cloud structure and any moons present will still be well resolved.
2) Try either more gain, you can go close to max gain, if you capture over 3000 frames and use the best 1000 the extra noise from using high gain will be smoothed out. Not sure if your capture software allows you to view a histogram, if it does use it to determine the correct gain and exposure, try and extend the histogram to about 2/3 of the distance across the graph.
3) If your image is still not bright enough then reduce the exposure, this will obviously mean less frames captured but the image will be brighter.
I think your Saturn images are progressing nicely and look forward to seeing more of them, just try for my signal.
Regards
Trevor
|