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Steve Mastellotto | all galleries >> Galleries >> Astrophotos > IC 2944 (The Running Chicken)
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26-MAY-2018

IC 2944 (The Running Chicken)

Narrowband image of IC 2944 - The Running Chicken (I do not see it either). Here are the details:

SII - 14 x 30 minute subs (no binning, -20c)
Ha - 14 x 30 minute subs (no binning, -20c)
OIII - 14 x 30 minute subs (no binning, -20c)

R - 3 x 10 minute subs (no binning, -20c)
G - 3 x 10 minute subs (no binning, -20c)
B - 3 x 10 minute subs (no binning, -20c)

Total exposure is 1,350 minutes or 22.5 hours. The data was captured with an Astro Physics 12" Riccardi-Honders f3.8 (1,160mm focal length) telescope on a Paramount ME II mount, SBIG STXL16200 CCD camera with Astrodon LRGB Gen II, Ha, SII, OIII filters (narrowband are 5nm bandpass) located in rural NSW, Australia. The system yields 1.07 arcseconds per pixel resolution and a field of view of 88 x 66 arcminutes.

SII mapped to red channel, Ha mapped to green channel and OIII mapped to blue channel. This is also referred to as the Hubble palette. R, G, and B data only used to get star colours correct and combined with SHO data using a star mask.

All image calibration (Lights, Bias, Darks and Flats) and processing was done in PixInsight. RGB files were Channel Combined, Dynamic Crop, Dynamic Background Extraction, Photometric Colour Calibration, MLT Noise Reduction, Histogram Transform stretch. SHO files were Channel Combined, Dynamic Crop, Dynamic Background Extraction, Background Neutralization, MLT Noise Reduction, Histogram Transform stretch, Colour Balanced using curves to remove heavy Ha contribution in the Green channel, TGVDenoise, Saturation, Local Histogram Equalization, MLT Sharpening, Unsharp Masking and Morphological Transformation (reduce star size). Then RGB data used to correct star colour.

0.00s full exif

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