Robert_T
09-02-2006, 06:16 PM
Hi All, thanks to Mike's prompt I took on the challenge to capture Jupiter's GRS this morning. I was a little late for the transit (no daylight saving here), but capture the GRS toward the limb. Seeing was OK, but not great. Captured one moon (not sure which - Io?) too.
Managed a fair amount of detail, but confess getting exposure and colour right for Jupiter this season in the capture is really challenging me for some reason. Last year no probs, Saturn and Mars I'm fine, but I just can't seem to get Jupiter right.
I'm bracketing exposures, but taking quite a few avi's well above 200 on the light meter. Still some problem with "onion" ringing here though far less than last time - earlier avis so sky was darker though by no means black. I'm getting some white burn out which doesn't really fit with under-exposure. For those of you using K3CCD tools - what are you reading on the light meter. What about saturation, gamma, gain and exposure settings? I've tried post processing in Registax with histo stretch on and off, but don't seem to make much difference. Astra Image and deconvolution processing doesn't seem to be having the nice effect it normally does either so it must be something in my underlying avi capture for Jupiter that just isn't right.
Anyway, the couple below are still probably close to my best so can't complain too much. Just want to make sure when the seeing's really up there I've got my capture settings sorted.
Cheers,
Managed a fair amount of detail, but confess getting exposure and colour right for Jupiter this season in the capture is really challenging me for some reason. Last year no probs, Saturn and Mars I'm fine, but I just can't seem to get Jupiter right.
I'm bracketing exposures, but taking quite a few avi's well above 200 on the light meter. Still some problem with "onion" ringing here though far less than last time - earlier avis so sky was darker though by no means black. I'm getting some white burn out which doesn't really fit with under-exposure. For those of you using K3CCD tools - what are you reading on the light meter. What about saturation, gamma, gain and exposure settings? I've tried post processing in Registax with histo stretch on and off, but don't seem to make much difference. Astra Image and deconvolution processing doesn't seem to be having the nice effect it normally does either so it must be something in my underlying avi capture for Jupiter that just isn't right.
Anyway, the couple below are still probably close to my best so can't complain too much. Just want to make sure when the seeing's really up there I've got my capture settings sorted.
Cheers,