Location : Castres (France, Tarn)
Acquisition Date : 2010-05-20 beginning at 21:44:00 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)
Exposure : 79.5 minutes [53 subexposures of 90 sec each (selected from 59)] @ ISO 200
Calibration : Dark & bias : 9/9 @ ISO 200 - Flat & Dark-Flat : 9 @ ISO 400
Weather : Temp 10°- Humidité 30% - Absence de vent - Turbulence faible - Transparence bonne
Software Used : ImagePlus, PhotoShop CS