M42 Orion Nebula Bi-Color
Telescope : William optics FLT 98 CF
Camera : Starlight Xpress SXVR H35 Full frame
Filters : H@ - OIII (H@ = Red , OIII = Blue , H@/OIII = sGreen)
Mount : Vixen GP-DX
Guiding : 70 mm Vixen guidingscope and Meade DSI 1 using PHD
Exposure : 6 x 15 min subs H@ - OIII - SII (1 dark for BPM and 100 Biasframes)
Processing : Nebulosity and PS , CS 2
Location : Wateren and The Haque
Date : 10-10-2010 and 09-01-2011
Conditions : -1 Celcius
Combination of H@ and OIII taken under totally different skies.
H@ in Wateren (best skies in Holland). 1x1 binning
and OIII in The Haque (worst skies in Holland). 2x2 binning
A synthetic green was made in PS (steve Cannistra)
Due to the 2x2 binning I had forgotten to take a darkframe in 2x2 , so in the OIII image no darks applied.
Also the Biasmaster couldn,t be used due to the same issue.
I also forgot to allign the camera's rotation on the H@ image , So this image is more a crop of M42.
The blue and red artefacts are probably caused by the problems mentioned above.
next time better!!