M31_2009-01-03

Galaxies - M 31

R.A.: 0h 42m 44.3s
Dec.: +41° 16' 9.4"
Mag.: 4.4

The Andromeda Galaxy (also known as Messier 31, M31, or NGC 224) is a spiral galaxy approximately 2.5 million light-years away in the constellation Andromeda. It is the nearest spiral galaxy to our own, the Milky Way. As it is visible as a faint smudge on a moonless night, it is one of the farthest objects visible to the naked eye, and can be seen even from urban areas with binoculars. It is named after the princess Andromeda in Greek mythology.

© Wikipedia

M 31 – Andromeda Galaxy

Date/time: 03.01.2009 20:35 to 03.01.2009 22:30
Az./Alt. positions: 262° / 65.6° to 283° / 47°
Ambient conditions: -10°C, transparency 4/5, seeing 3/5,
¼ Moon, Moonset at 00:15, present during all imaging session
Location: Aach, Germany

Equipment:
Telescope: TMB 92 SS f/5.5 with TSFlat
Mount: CGE, selfguided with ST-4000XCM
Camera: SBIG ST-4000XCM
Filters: IDAS LPS

Acquisition:
Software: CCDSoft V5
FOV, Image scale: 102,8 x 102,8 arcmin, 3,01 arcs/pixel
Sub-exposures: 2h 15min (10 x 10min) lights at –30°C,
50 x 10min darks,

Processing:
Calibration, Min/Max Exc Avg stacking and DDP in Images Plus 3.75,
curves and levels adjustments in CS3,
noise reduction with Carbonis Actions under CS3,
green cast elimination with Pixinsight LE 1.0.1.

Add your comment

yvComment v.1.19.2

Your name:
Comment: