Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's nebulae  ·  M 82  ·  NGC 3034

Image of the day 03/13/2016

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    M82 HaLRGB, 


            Josh Smith
    M82 HaLRGB
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    M82 HaLRGB

    Technical card

    Imaging telescopes or lenses: TEC 140

    Imaging cameras: QSI 690 WSG-8

    Mounts: Astro-Physics Mach 1

    Guiding cameras: Lodestar Autoguider

    Focal reducers: TEC Field Flattener

    Software: PixInsight 1.8  ·  Cartes du Ciel Planitarium  ·  Sequence Generator Pro  ·  Photoshop CC  ·  Nebulosity 3.1 Nebulosity und PHD

    Filters: Astrodon Red Tru-Balance E-series  ·  Astrodon Blue Tru-Balance E-series  ·  Astrodon Green Tru-Balance E-series  ·  Luminance  ·  Astrodon 5nm H-alpha

    Basic astrometry details

    Astrometry.net job: 999995

    RA center: 9h 55' 52"

    DEC center: +69° 40' 55"

    Pixel scale: 0.372 arcsec/pixel

    Orientation: 87.429 degrees

    Field radius: 0.230 degrees

    Resolution: 620x510


    So, long roundabout path to get me back to a TEC 140. Last year I tried out a TEC 140 without a field flattener and on the Atlas mount. While I was really happy at that point with the scope, it wasn't a good match for my mount and it had very bloated blues. Thanks to a lot of work from Peter in Reno documenting his experiences with TEC 140 and a Sony sensor along with a field flattener, I was convinced to give it a go again now that I have a Mach 1. I am so happy with the results. The guiding was excellent, mostly under .5" rms and the details are very crisp and sharp with an image scale of around .78"/pixel. Unfortunately, the 690 needs to go back again for a little more work, so this is a little bit of a false start, but I'm still quite pleased with the image. I can't wait to get the rig out of a red zone and see what it can really do. Fortunately, I'll be shooting smaller targets with this that typically have a little higher surface brightness and require better seeing. My new location in Florida should match those requirements well. As always, your C&C's are very much appreciated and thanks for looking!



      M82 HaLRGB, 


            Josh Smith
    • Final
      M82 HaLRGB, 


            Josh Smith

    Sky plot

    Sky plot


    M82 HaLRGB, 


            Josh Smith