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M42 as a byproduct and seeing-test from January 17th, 2023; C9.25 at 1500 mm; mod. Canon 77d; no filter; only 13x10 sec + 41x1 sec; component E separated, F not;


M42 as a byproduct and seeing-test from January 17th, 2023; C9.25 at 1500 mm; mod. Canon 77d; no filter; only 13x10 sec + 41x1 sec; component E separated, F not;





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