M81 Bode's Galaxy in constellation Ursa Major. This dual barred galaxy is around 90,000 light years across and 12 million light years away from Earth. The center of M81 is an active galactic nucleus. The 300 second exposures made the core really bright, so I tried to showcase the swirling dust lanes that lead to the AGN by reducing the brightness in processing.
43 lights x 300 seconds
30 flats
30 darks
30 biases
Acquisition & Astro Rig details: Bortle 2. Elevation 2,700 Feet.
ZWO AM5N Mount, 200mm pier extension on Celestron AVX Stainless Steel Tripod
SVBONY MK105, F/13 1365mm FL, 105mm aperture
ZWO ASIAIR Plus
ZWO 120mm ZWO Guide Camera to Celestron D70/400 as the autoguide scope.
ZWO ASI585MC Pro One Shot Colour 3840 x 2160 resolution with HCG enabled Gain at 200, Cooling Fan 10 degress F.
Straight UV/IR Cut 2" Filter
100ah Lithium Power Cell.
Processing:
Stacked and processed in Siril + scripts from GraXpert/Veralux/Cosmic Clarity then finalized in GIMP.
by fractal_disarray