Contains: Witch Head nebula, IC 2118, The star 29Ori, The star τOri, The star Rigel (βOri), The star λEri, The star Cursa (βEri), The star 66Eri, The star ψEri, The star 63Eri, The star 62Eri, The star ωEri, Part of the constellation Eridanus (Eri)

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Witch Head Nebula

Technical card

Imaging telescope or lens: Canon EF 200mm f/2.8 L

Imaging camera: SBIG STL-11000

Guiding telescope or lens: Canon EF 200mm f/2.8 L

Guiding camera: SBIG STL-11000

Software: PixInsightCCDSoft

Filter: Baader Planetarium LRGB Filter Set

Resolution: 1991x1322

Dates: Dec. 30, 2013

Frames: Baader Planetarium LRGB Filter Set: 39x240" bin 1x1

Integration: 2.6 hours

Darks: ~26

Flats: ~59

Bias: ~51

Avg. Moon age: 27.26 days

Avg. Moon phase: 5.70%

Mean SQM: 21.50 job: 161117

RA center: 76.888 degrees

DEC center: -8.113 degrees

Pixel scale: 19.071 arcsec/pixel

Orientation: -179.548 degrees

Field radius: 6.332 degrees


Title: IC2118 in Eri
Optic: Canon EF200f2.8 at f/2.8
Filter: Baader 50mm LRGB
Camera: SBIG STL11000M C2 at -20°C, selfguiding
L 21x4min (12 true L, 9xL from RGB);
RGB 36:36:36min, subexposure 4min,
26x Darks, 51x Bias, 59x Sky Flat
Location: Saharasky, Marocco
Date: 2013-11-30
Preprocessing Pixinsight:
Image Calibration, CosmeticCorrection, StarAlignment, Image Integration, RGB STF-Stretching, L masked stretch script, L-RGB combination, histogramm, MT
PS: color enhancement, remove gradients, histogram, curves, minimum filter, cosmetic correction on Rigel




Sky plot

Sky plot


Witch Head Nebula,