Ausschnitt im Sternbild

M33 - Triangulum Galaxy

Spiral galaxy in the constellation triangle.

Messier 33 (M33), triangular nebula, or triangular galaxy is a spiral galaxy with a diameter of approx. 60.000 Lj. and the total brightness of 5.7 mag in the constellation triangle.

Messier 33
Please click on the image for a bigger view.
Object: Messier 33
Date of exposures: 08.11.2020, 24.09.2016, 23.09.2016
Distance: 2,8 Mio. Lightyears
Exposures: Lum: 18 x 480 Sec., 71 x 180 Sec., RGB 48 x 300 Sec., 74 x 180 Sec., Sum: 13,6 hrs.
Telescope: 10'', F4 Newton
Focal length: 1000 mm
Filter: Astrodon E-Series, LRGB
Camera: ASI 1600 MMC Pro
Guiding: Off Axis Guider, Lodestar
Mount: EQ8

This makes it the second brightest spiral galaxy in the nightsky after the Andromedanel and one of the closest to us. However, its brightness is distributed over a larger area, so that under normal conditions it is not visible to the naked eye, but only in the field as a weak foggy spot.

Older image from 2016 with Atik 460 Exm: