M33 the Triangulum Galaxy located about 3 million light-years from Earth in the constellation Triangulum.
The many beautiful emission nebulae (red ionised hydrogen) contained in this galaxy are visibles and detailed thanks to the exposures through the hydrogen filter which completes the classic LRVB exposures.
Newton 250mm f/4 Lacerta
Ioptron CEM120 Mount
Camera ZWO ASI2600mm + ANTLIA LRGBHa filters
Taken form my backyard in Amiens (France, Bortle 7) from 5 november to 21 december 2021 (21h30 exposures).
L : 349 x 120s
RGB : 30/44/50 x 120s
Ha : 68 x 300s
Processing : Pixinsight and Photoshop
© Mathieu Guinot