Thanks, One day I will use the 9 1/4 inch telescope for more detail, I used this site to give flyby times at location: https://www.heavens-above.com/ click on ISS and enter your location, using the map is easier. I basically use the telescope like a canon, using the viewfinder next to it to put the shuttle image in the cross-hairs, viewfinder has to be perfectly in line with camera view. Then with a remote switch I press away every time the shuttle gets inline, it's a fast chase and takes practice. The scope has to be focused perfectly, I use a bright star or moon, then you have to guess at the shutter speed and ISO settings, will very depending on the scope.
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