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Example PN NGC 40: resolution comparison; with C9.25 and mod. Canon 77d at about 1525mm; from 2021; 2 sec against 10 sec: same night, telescope, camera, seeing


Example PN NGC 40: resolution comparison; with C9.25 and mod. Canon 77d at about 1525mm; from 2021; 2 sec against 10 sec: same night, telescope, camera, seeing





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