NGC1931-IC417 in Auriga
with 10" f/3.9 Astrograph / MiniCat 51 Context
Uploaded 2/8/26
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These two unique emission
nebulas in Auriga form a spectacular pairing, just fitting perfect
in the degree wide field of my 10 inch. Several features are
worth noting here. Note the two greyish dust clouds to the right
of center in IC417. Also the long rope like ray of nebulosity
shooting off to the left, starting out with a low amplitude sinusoid
and see that the amplitude increases as it gets furthur. NGC1931
has an sharp edged curved arc inside which faces the internal
star cluster very accurately. A possible bow shock? There are
so many mysteries in the Universe to uncover.
Technical Data: 10"
f/3.9 Newtonian astrograph, Atik 16200 CCD, LRGB = 5 hours total,
Payson, Az.
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Instrument: 10" f/3.9 Orion Astrograph Newtonian with Baader MPCC
Mount: Astrophysics 1200 QMD
CCD Camera: ATIK 16200
Guider: ASI290 w/80mm WO Zenithstar 81 piggyback refractor
Exposure: 5 hours HaRGB
Astronomik RGB Combine Ratio: 1: 1.05: 1.5
Location: Payson, Arizona, Elevation: 5150 ft.
Sky: Seeing FWHM = 3 arcsec , Transparency 9/10
Outside Temperature: 5 F
CCD Temperature: -30 C
Instrument: Williams Optics MiniCat51
Mount: Astrophysics 1200 QMD
CCD Camera: ZWO ASI2600 MC Pro
Guider: ASI290 w/80mm WO Zenithstar 81 piggyback refractor
Exposure: 5 hours RGB
Location: Payson, Arizona, Elevation: 5150 ft.
Sky: Seeing FWHM = 3 arcsec , Transparency 9/10
Outside Temperature: 75 F
CCD Temperature: -10 C
Image Processing Tools:
Maxim DL6: Calibration, PixInsight: All Remaining processing, Photoshop CS2: Production finishing
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