Location : Castres (France, Tarn)
Acquisition Date : 2011-07-04 beginning at 21:50:00 UT
Author : Michel Fleureau
Scope : Newton Orion 200/1000 (f/5)
Autoguiding : Orion StarShoot autoguider (PHD Guiding) & Orion ShortTube 80/400 mm
Camera : Canon EOS 450D (Digital Rebel XSi) non défiltré (unmodded)
Accessoire : Baader MPCC Coma Corrector (correcteur de champ Baader MPCC 2 pouces)
Exposure : 126.0 minutes [42 subexposures of 180 sec each (selected from 47)] @ ISO 800
Calibration : Dark & bias : 8/9 @ ISO 800 - Flat & Dark-Flat : 9 @ ISO 400
Weather : Turbulence faible. T=20°C HR=65%. Absence de vent. Transparence moyenne
Software Used : ImagePlus, PhotoShop CS, Noiseware Community