Objects: open cluster NGC 2175, emission nebula Sh2-252
Constellation: Orion (northern part)
Coordinates (J2000): 06h 09m 50; +20° 32'
Remarks: NGC 2175 is an open cluster surrounded by the emission nebula Sh2-252. Its distance is about 6,350 light years. The star cluster was discovered in 1654.
Telescope and camera: ASA 10", f 2.8; Focal length 700 mm, Canon EOS 40D (Astro modified)
Mount: ASA DDM 85, Software: Autoslew V5.0, Sequence V4
Exposure: 41 x 5min at 800 ASA. About 2.5 hrs total.
Date and Conditions: Jan 31 2011 - stars to 5m2, high fog, Feb 06 2011 - stars to 4m0, moon, Average FWHM 4,4" (CCDInspector V2.5)
Software used: acquisition: Maxim DL 5, Processing: DeepSkyStacker 3.3.2, Adobe Photoshop CS4, PixInsight 1.6