NGC 3681 / NGC 3684 / NGC 3686

exposed at three night in March / April 2011

50 % resolution

camera : Atik 383L+
lens: 12 " Newton f/4 (Baader RCC 1 corrector)
filter : Baader LRGB
exposure software : Astroart 4.0
guiding: OAG with Mintron MTV-12V6HC-EX and Guidemaster

exposure time :

LRGB
L : 41 x 10 min ( 6 hours and 50 min)
R : 15 x 5 min ( 1 hours and 15 min / 2 x 2 bin)
G : 15 x 5 min ( 1 hours and 15 min / 2 x 2 bin)
B : 15 x 5 min ( 1 hours and 15 min / 2 x 2 bin)

total: 10 hours and 35 min

location : Home observatory Leopoldshöhe
image processing : Fitswork (image addition, Flat correction) / Regim (color calibration and Background processing) / PS CS3 (final processing)
spezifics : good Seeing

here you can find the full resolution