Integrated Flux Nebula in UMa, near SAO 6792

Click on the image for a high res version.

The Integrated Flux Nebula (IFN) is a really wide and faint nebula mainly in the constellations of Ursa Major and Ursa Minor. Maybe the brighter and most photographed part is near the galaxies M81-82 (see here), but this time I've tried to image a completely different region, at dec +72°, near the mag. 5.9 star SAO 6792. Around this star I've found some interesting "veils". All the field is filled with small galaxies, such as UGC 4967 and the galaxy cluster Abell 788 (both lower left). The processing was quite hard because of the faintness, even if I gathered a total exposure of 8h 40min.

Technical Data
Optics TEC 140
Focal Length
1011 mm
Focal Ratio f/7.2
Exposure Time Total 8 h 40 min, LRGB 340:60:40:80 min (single exp of 10 min)
CCD SBIG STL-11000M @-35°C
Location Pian dell' Armà (PV, Italian Apennines) at 1350 m height
28-29 March 2014 (two nights, but the second one only of a few hours due to incoming clouds)
Mount Gemini G-41
Tracking Lodestar on an 80mm f/5 refractor
Temperature and humidity T= -2 °C, RH=100%
Sky brightness at zenith (with SQM-L) 21.2-21.6 mag/arcsec^2
Notes North at top.

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