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Hi Doug,
Although it’s hard to bring yourself to do having spent hours collecting subs, including sub par subs has no benifit. The universe isnt going anywhere any time soon so if you find you have to cut down your subs because they aren’t up to standard so be it. If that leaves you with not enough subs to give you a good SNR in the final image then you just have to spend another session on the target. Even if you end up throwing out an entire session, you won’t be the first or last to do it. As Steven Covey says “ begin with the end in mind “. Note what caused you to have to cut subs such as bad seeing, rushing your PA, not refocusing when there has been a significant change in temperature throughout the session etc. If you learn from it, it’s not a wasted session.
Cheers
Ryan
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