Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  Bubble Nebula  ·  Bubble nebula  ·  NGC 7635  ·  NGC7635  ·  Sh2-162

Image of the day 03/15/2021

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    Bubble Nebula (NGC 7635, Sh2-162, Caldwell 11), 


            Gary Lopez
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    Bubble Nebula (NGC 7635, Sh2-162, Caldwell 11)

    Imaging telescopes or lenses: William Optics FLT 132 Triplet APO f/7

    Imaging cameras: ZWO ASI1600MM Cooled PRO

    Mounts: Orion Atlas EQ-G

    Guiding telescopes or lenses: Orion 50mm Guide Scope with helical focusing

    Guiding cameras: Lacerta M-Gen II Autoguider

    Focal reducers: William Optics 0.8X Field Flattener

    Software: Adobe Lightroom CC  ·  Photoshop CC  ·  Main Sequence Software Sequence Generator Pro, v3.0  ·  Pleaides PixInsight Core 1.8

    Filters: Astrodon OIII 3nm-31mm  ·  Astrodon SII 3nm-31mm  ·  Astrodon Ha 3nm-31mm

    Dates:Dec. 22, 2020Jan. 7, 2021Jan. 9, 2021Jan. 10, 2021Jan. 14, 2021Jan. 15, 2021Jan. 16, 2021

    Astrodon Ha 3nm-31mm: 142x180" (gain: 200.00) -15C bin 1x1
    Astrodon OIII 3nm-31mm: 70x180" (gain: 200.00) -15C bin 1x1
    Astrodon SII 3nm-31mm: 64x180" (gain: 200.00) -15C bin 1x1

    Integration: 13.8 hours

    Darks: ~30

    Bias: ~50

    Avg. Moon age: 12.91 days

    Avg. Moon phase: 19.96%

    Bortle Dark-Sky Scale: 4.00

    Astrometry.net job: 4281842

    RA center: 23h 20' 38"

    DEC center: +61° 10' 2"

    Pixel scale: 0.863 arcsec/pixel

    Orientation: 62.145 degrees

    Field radius: 0.340 degrees

    Resolution: 2261x1709

    Locations: Monterey Pines Observatory, Monterey, California, United States

    Data source: Backyard


    Located in the constellation, Cassiopeia, the Bubble Nebula was created by stellar winds from the massive, hot star, SAO 20575. The bubble shape is made visible because the energy from the star causes the matter in surrounding molecular cloud to glow.

    I collected the data for this image over a month-long period in December 2020 and January 2021. I enjoyed pretty good seeing, with nearly all of the data ranging from HFR 2.1 to HFR 2.7, good quality for my WO FLT132 and ZWO ASI1600MM Pro combination. This is an SHO rendition with standard Hubble Palette color assignment.



      Bubble Nebula (NGC 7635, Sh2-162, Caldwell 11), 


            Gary Lopez
      Bubble Nebula (NGC 7635, Sh2-162, Caldwell 11), 


            Gary Lopez
    • Final
      Bubble Nebula (NGC 7635, Sh2-162, Caldwell 11), 


            Gary Lopez


    Description: Tint tweak

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    Description: Fixed a tiny blown out area that was only noticed by me and my dog, Jessie.

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    Sky plot

    Sky plot


    Bubble Nebula (NGC 7635, Sh2-162, Caldwell 11), 


            Gary Lopez