IC443 in Gemini - The Jellyfish Nebula
Supernova Remnant
Uploaded 11/18/23

 
This
            week we would like to share with you another brand new image,
            taken last month as a first test of the just released IDAS NBZ-2
            dual band filter. A good test target was IC443 in Gemini because
            of its wide range of emission output colors. This new filter
            superceeds both versions of the old NBZ which were discontinued
            2 months ago, and this new version works from f/1.8 on up. As
            many of you know, the IDAS NBZ is the hearthrob of many RASA
            owners, as it gives superior results at f/2 to any other filter.
            We were excited to test out this new version and compare results.
            To make this test more accurate, we employed a Starizona Nexus
            coma corrector on the 10 inch f/3.9 to yeild an effective f/2.9
            for filter tests at a great speed. The results are very good,
            and future testing will continue! Technical data: 10" f/3.9
            GSO astrograph @ f/2.9, 3h total integration time, ASI071 mc
            pro

            
Select an image size for a larger view:

1400 x 1200


Instrument:  10" f/2.9 Orion Astrograph Newtonian with Nexus 0.75x coma corr.
Mount:  Astrophysics 1200 QMD
Camera:  Color CMOS OSC
Guider: ASI mini  w/80mm piggyback refractor
Exposure:  3h
Location:  Payson, Arizona, Elevation:  5150 ft.
Sky:  Seeing FWHM = 2 arcsec , Transparency 9/10
Outside Temperature:  45 F

Image Processing Tools: 
Maxim DL6:  Calibration, Color Conversion
PixInsight:  Saturation Curves, , stacking
Photoshop CS2:  Curves, Color Correction, Gradient removal (Grad Xterminator), Cleanup

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