Hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  NGC 6357  ·  the War and Peace Nebula

Image of the day 06/08/2021

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    Lobster-fra-Diavolo, 



    
        

            Andy 01
    Lobster-fra-Diavolo
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    Lobster-fra-Diavolo

    Image of the day 06/08/2021

    Getting plate-solving status, please wait...
      Lobster-fra-Diavolo, 



    
        

            Andy 01
      Lobster-fra-Diavolo
      Powered byPixInsight

      Lobster-fra-Diavolo

      Technical card

      Imaging telescopes or lenses: Takahashi TOA-130 APO Refractor

      Imaging cameras: QSI 6162 monochrome

      Mounts: Takahashi NJP Temma-2

      Guiding cameras: Starlight Xpress Lodestar Off Axis Guider

      Focal reducers: Takahashi 67-FL flattener

      Software: Topaz Denoise DeNoise  ·  Adobe Photoshop 2020  ·  Nik Software, Inc. Nik Filters

      Filters: Chroma Ha 2" 5nm  ·  Chroma Blue  ·  Chroma Green  ·  Chroma Red  ·  Chroma OIII 3nm O3  ·  Chroma SII 5nm Chroma SII

      Accessory: Stellarmate Raspberry Pi-4  ·  Kendrick Standard Dual Channel Controller


      Dates:May 29, 2021

      Frames:
      Chroma Blue: 16x120" (32')
      Chroma Green: 16x120" (32')
      Chroma Ha 2" 5nm: 18x1200" (6h) bin 1x1
      Chroma OIII 3nm O3: 27x1200" (9h)
      Chroma Red: 14x120" (28')
      Chroma SII 5nm Chroma SII: 14x1200" (4h 40')

      Integration: 21h 12'

      Avg. Moon age: 18.24 days

      Avg. Moon phase: 86.98%

      Bortle Dark-Sky Scale: 7.00


      Basic astrometry details

      Astrometry.net job: 4569205

      RA center: 17h 25' 33"

      DEC center: -34° 13' 19"

      Pixel scale: 1.236 arcsec/pixel

      Orientation: 184.589 degrees

      Field radius: 0.923 degrees


      Resolution: 4356x3157

      Data source: Backyard

      Description

      Cataloged as NGC 6357, the Lobster Nebula houses the open star cluster Pismis 24 near its centre -- a home to unusually bright and massive stars. The overall blue glow near the inner star forming region results from the emission of ionised hydrogen gas. The surrounding nebula, holds a complex tapestry of gas, dark dust, stars still forming, and newly born stars. The intricate patterns are caused by complex interactions between interstellar winds, radiation pressures, magnetic fields, and gravity. NGC 6357 spans about 400 light years and lies about 8,000 light years away toward the constellation of the Scorpion. (apod)

      When I attempted this one last year, I failed miserably due to a mix of reducer & spacing errors so I really wanted to revisit this and get it right! My gear is now working beautifully, so here in all it's lurid narrowband glory is the classic cosmic crustacean, NGC 6357.

      Taken remotely via Stellarmate during lockdown #4 in suburban Melbourne, Australia.

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      Lobster-fra-Diavolo, 



    
        

            Andy 01