Quote:
Originally Posted by matt
Hey Doug.
My advice with the ToUCam/SPC900NC would have been 10fps for almost all occasions....5fps only in very good seeing. There's not been anything resembling very good seeing in Brisbane for quite a while. So 10fps it is.
I never shoot at 15fps with a ToUcam. Too much compression 
Also...dont worry about rotation with Saturn. Unless you know there's going to be a storm visible...you can go to town (within reason) on capture time.
I capture for between 2 and 3 minutes (for a total of between 1200 and 1800 frames respectively)...and as Mike says, 2000 is far too many frames to stack. I generally stack around the 400-500 mark...if the seeing's OK. But I also set the % quality in Registax around the 85-90% mark...to kill off the crap frames in variable seeing.
Cheers. |
Thanks heaps for this advice Matt.
I must say, I gave up on Saturn due to terrible seeing to my North-West. Jupiter is another matter, I have been shooting no longer than 3 minutes in order to minimise rotation effects.
I will try for 10fps next time. I think what I need to do is focus at a higher frame rate and then drop the frame rate for the imaging. Focus is a huge problem for me as I'm using the standard focus knob on my 10 year old Celestron SCT.
I just posted a reprocessed image where I stacked only 500 frames. It does look sharper and more detailed to my eye. I think I'm getting the colour better too.
Can't wait for another crack at Joop. I've yet to image a shadow transit or the GRS.
Have fun,
Doug