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Planetary imaging requires a large focal ratio which is dependent upon seeing conditions
Here’s some of my notes from 2018 on planetary imaging …..
Focal Ratio for Lunar and Planetary Imaging
General rule of thumb to determine the “best focal ratio” of your image train for Lunar and Planetary imaging is -
Poor night of seeing 3.5 x pixel size of your camera
Average night of seeing 5 x pixel size of your camera
Good night of seeing 7 x pixel size of your camera
Canon 600D pixel size is 4.3 uM
Poor seeing 4.3 x 3.5 = 15
So focal ratio F15 required
Average seeing 4.3 x 5 = 21.5
So focal ratio F21.5 required
Good seeing 4.3 x 7 = 30.1
So focal ratio F30.1 required
My 6” f6 Bintel GSO scope ( 900mm focal length )use 4 x or 5 x powermate
My 8” f5 Bintel GSO scope ( 1000mm focal length ) use 4 x or 5 x powermate
End of notes
Backyard EOS ( BYEOS ) software specifically design for Canon cameras is an excellent software package for both deep sky and planetary imaging, very intuitive and reliable. It provides live view , framing , focus and capture plans all in one bundle plus extra tools like polar alignment etc….About $60 ( Canadian product ) I still use it today for planetary only
My main acquisition software for deep sky imaging is APT
For planetary imaging I use my TV Powermates ( full set ) with a 35mm extension adapter ( Bintel ) to achieve focus
Photos from back in 2018 attached showing TV Powermate , 35mm extender and Canon 600D into focuser of 6” Newt
Plus photos of BYEOS both planetary and deep sky imaging
Hope the above and attached helps
Cheers
Martin
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