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Spiral Galaxy M33 (NGC 598), type Sc, in Triangulum

(central part only - one of my first DSO imaging attempt)

Details

Spiral Galaxy M33 (NGC 598), type Sc, in Triangulum

Probably discovered by Hodierna before 1654. Independently discovered by Charles Messier 1764.

Right Ascension 01 : 33.9 (h:m)
Declination +30 : 39 (deg:m)
Distance 3000 (kly)
Visual Brightness 5.7 (mag)
Apparent Dimension 73 x 45 (arc min)

Seeing: Fair - Pickering 6 rating
Optic(s): Celestron 11" Schmidt Cassegrain @ f/10
Mount: CGE equatorial
Camera: Artemis Art 4021 - monochrome CCD – 2048 x 2048 px ; 16x16 mm; 7.4 µm x 7.4 µm
Filters: Astronomics LRGB Set, SupaSlim TrueTechnology Computerized Filter Wheel
Dates/Times: 2011-07-31
Location: Rozhen Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exposure Details:

LRGB: L (IR cut): 3x10 min (Bin 1), R, G and B: 1x10 min each of colours (Bin 2), Total ExposureTime - 50 min

More details: Dark, bias and flats calibrated
Guiding: Starlight Xpress Lodestar + Maxim DL + APO900
Processing:

AIP4Win / PSCS5 - Velimir Popov

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All Contents copyright Velimir Popov unless otherwise noted.