Quote:
Originally Posted by Quopaz
I'll have to remember to try that next time. I can increase the ISO a bit, but it starts getting noisy. I think I'm already maxxed out with the exposure time at 1/60 sec. With the 60D in 640x480 crop mode, frames per second is set at 60fps. If I took it out of NTSC mode it would be 50fps and I might be able to increase exposure time to 1/50 sec. I've been shooting all the planets (except Venus) at 1/60 sec exposure time, and just varying the ISO. Venus is too bright at the lowest gain setting of 200 with exp at 1/60, so for Venus I've been shortening the exp time to 1/400 sec.
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Don't worry about the noise too much - the stacking process will remove the noise if you get enough frames. Keep the 1/60 shutter speed, try ISO levels right up to the maximum for 3 -5 minutes
Quote:
Originally Posted by multiweb
Baader does a U-Venus filter at 350nm that's supposed to give you more details with the Venus atmosphere. I have one which I used for Deepsky but never tried it on Venus yet. |
Christophe Pellier has a good summary of Venus filters used to see details in the clouds - this takes a lot of practice
https://www.cloudynights.com/topic/7...-blue-filters/
Quote:
Originally Posted by multiweb
I'm still enquiring about the ADC. Maybe not the silver bullet it claims to be.  Will know more soon. |
Here's the effect an ADC can make.
https://www.cloudynights.com/topic/5...n-with-saturn/
Andrew