Hemisphere:  Northern  ·  Constellation: Draco (Dra)  ·  Contains:  IC 1251  ·  IC 1254  ·  IC1251  ·  IC1254  ·  NGC 6340  ·  NGC6340

Image of the day 08/02/2020

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    NGC6340 and neighbors in Draco (Deep), 


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    NGC6340 and neighbors in Draco (Deep)

    Imaging telescopes or lenses: Planewave CDK24

    Imaging cameras: FLI Proline 16803

    Mounts: Planewave L600

    Guiding cameras: Starlight Xpress Ultrastar

    Focal reducers: None

    Software: PixInsight 1.8  ·  Sequence Generator Pro  ·  Photoshop CS3  ·  PHD Guiding 2  ·  CCDWare CCD Inspector  ·  Planewave PWI4  ·  Planewave PWI3  ·  Maxim DL6

    Filters: Astrodon 50mm B  ·  Astrodon 50mm R  ·  Astrodon 50mm L  ·  Astrodon 50 mm G

    Accessory: FLI CFW-5-7  ·  Astrodon Monster MOAG  ·  Hedrick Focuser  ·  Planewave Delta-T  ·  Planewave EFA

    Dates:July 12, 2020July 14, 2020July 18, 2020July 20, 2020

    Astrodon 50 mm G: 12x900" -30C bin 1x1
    Astrodon 50mm B: 12x900" -30C bin 1x1
    Astrodon 50mm L: 68x900" -30C bin 1x1
    Astrodon 50mm R: 12x900" -30C bin 1x1

    Integration: 26.0 hours

    Darks: ~20

    Flats: ~80

    Flat darks: ~80

    Bias: ~20

    Avg. Moon age: 25.44 days

    Avg. Moon phase: 24.04%

    Mean SQM: 21.50

    Mean FWHM: 2.22

    Astrometry.net job: 3686326

    RA center: 17h 11' 57"

    DEC center: +72° 26' 27"

    Pixel scale: 0.234 arcsec/pixel

    Orientation: -178.697 degrees

    Field radius: 0.363 degrees

    Resolution: 7938x7858

    Locations: KG Observatory, Julian, CA, United States

    Data source: Backyard


    Looking back at my Hercules Cluster of Galaxies project, I wondered if there may be something similar in the July sky with good positioning?

    Fortunately there is! And Adam Block has a great reference point NGC6340 in 32-inch Schulman Telescope.

    After scanning the area a bit, I noticed there's a lot going on. (-:

    This is one of my deepest images under very steady skies. 17 hours of Luminance in a 21.5 average SQM sky with 68 15-minute subs between 1.69" and 2.55" FWHM. The 2x Drizzle stacked result is 2.22" FWHM and the deconvolved result 1.62" FWHM.

    The circular NGC 6340 is 55 million light years distant. IC 1251, IC 1254 and UGC 10791 are all about the same distance.

    Maybe someone can find something 1 billion+ light years distant? I believe we can see at least 24 magnitude objects here. (-: