M78 for ESO Processing contest. WFI camera on 2.2m telescope
M78 nebular complex in Orion
La Silla 2.2m MPG/ESO telescope, Cassegrain focus (F=8009mm).
5x3min Red, 3x3min Green (V), 3x3min Blue(B)
FWHM = 1.4"
Camera: WFI 8k x 8k mosaic CCD.
Image was calibrated, and Stacked from RAW data via IRAF software, composed/ white-balanced in Iris, and post-processed in PhotoShop.
Post processing was made in 50% scale (4228x4114) because image was quite oversampled (nothing to lose in 50% scale) and my PC is terrible weak for 67Mpix 16-bit image's multi-layered photoshoping :-)
This is a sample in ~12% resolution.
Large version is here (50% of original FITS, 12Mb)
(C) ESO/Igor Chekalin