21p 20180916 fhemmerich

Parallel recording in RGB and hAlpha (1) 240 x 30 sec Sony A7s, ISO 3200, Canon 200mm/F1.8 (open aperture) (2) 60 x 120 sec ASI 1600 monochrome with hAlpha filter (7nm), Samyang 135mm/F2.0 @2.8 Both on a EQ8 without guiding Tenerife 1180 m above sea level, 2018-09-16 4:15h - 6:30h UT

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