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Date: 01/14/2007 Views: 360

73P/Schwassmann-Wachmann on 2006-03-24

Date: 03/24/2006

Size:
Full size: 1024x768

Title	Comet 73P/Schwassmann-Wachmann
Description	Comet 73P/Schwassmann-Wachmann on 2006-03-24
Imager	© Frank Jungclaus
Location	Wedemark, near Hannover, Germany, 9.7°E, 52.6°N
Date	24. March 2006, 01:26-02:42 UT+1h
Conditions	Temp. -1.5°C Light haze Visual limiting magnitude in UMi 4.2mag
Telescope	115mm F/7 with focal reducer 0.8x
Mount	Losmandy G11
Camera	Canon EOS 10d RAW, 3072x2048 pixels, ISO 800
Focusing	DSLR-Focus V3.04
Focallength	644mm @ F/5.6
Exposure	10 RAW images at ISO 800 10 x 300s= 3000s= 50min in total
Guiding	Autoguiding on nearby star
Processing	Iris V5.30: Median dark frame generation Dark frame subtraction Hotpixel removal Raw conversion Registration / composit on comets head Background gradient removal Logarithmic scaling Color correction Adaptive noise filtering with "Minimum Mean-Square Error" method, separately done on R/G/B Resize Crop
Remark	While preparing my image setup for a later on imaging session an C2006 A1 Pojmanski, I used Arcturus for focusing. Then, while looking to "Cartes du Ciel" running on my laptop, I suddenly saw 73P only a stone's throw away from Arcturus. So I spontaneously decided to give 73P a try ...