Hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  11 Sgr  ·  4 Sgr  ·  7 Sgr  ·  9 Sgr  ·  B296  ·  B302  ·  B303  ·  B85  ·  B88  ·  B89  ·  B91  ·  Hourglass nebula  ·  IC 1274  ·  IC 1275  ·  IC 4684  ·  IC 4685  ·  Lagoon nebula  ·  M 20  ·  M 21  ·  M 8  ·  NGC 6514  ·  NGC 6523  ·  NGC 6526  ·  NGC 6530  ·  NGC 6531  ·  NGC 6544  ·  NGC 6546  ·  NGC 6553  ·  NGC 6559  ·  PK005-01.1  ·  And 17 more.

Image of the day 03/02/2014

Getting plate-solving status, please wait...
    M8, M20, NGC 6559, 



    
        

            Wei-Hao Wang
    Powered byPixInsight

    Image of the day 03/02/2014

    Getting plate-solving status, please wait...
      M8, M20, NGC 6559, 



    
        

            Wei-Hao Wang
      Powered byPixInsight
      Imaging Telescopes Or Lenses
      Takahashi Epsilon 180ED
      Imaging Cameras
      Canon EOS 5D Mark II MOD
      Mounts
      Takahashi EM-400 Temma2
      Filters
      UV/IR-cut · Infrared 825 nm
      Software
      DeepSkyStacker · RegiStar · Photoshop CS3
      Guiding Telescopes Or Lenses
      Vixen FL70S
      Guiding Cameras
      Fishcamp Starfish

      Acquisition details

      Dates:
      June 26, 2012
      Frames:
      Infrared 825 nm : 12x300" (1h) ISO1600
      UV/IR-cut: 16x180" (48') ISO800
      Integration:
      1h 48'
      Avg. Moon age:
      6.70 days
      Avg. Moon phase:
      42.79%
      Bortle Dark-Sky Scale:
      2.00

      RA center: 18h04m55s.42

      DEC center: -23°5030.0

      Pixel scale: 4.389 arcsec/pixel

      Orientation: -59.787 degrees

      Field radius: 2.455 degrees

      More info:Open 

      Resolution: 2220x3360

      Locations: Mt. Ho-Huan (Taiwan), Taichung, Taiwan

      Data source: Traveller

      Description

      The original is a normal visible-light RGB image.

      Ver.B is a near-IR (825nm and above) gray-scale image.

      Ver.C combines the near-IR and visible images, where B is the visible B+G, G is the visible R, and R is the IR.

      Ver.D is a reprocessing uploaded in 2020, to give it a more modern touch.

      Comments

      Revisions

        M8, M20, NGC 6559, 



    
        

            Wei-Hao Wang
        Original
        M8, M20, NGC 6559, 



    
        

            Wei-Hao Wang
        B
        M8, M20, NGC 6559, 



    
        

            Wei-Hao Wang
        C
      • Final
        M8, M20, NGC 6559, 



    
        

            Wei-Hao Wang
        D

      Sky plot

      Sky plot

      Histogram

      M8, M20, NGC 6559, 



    
        

            Wei-Hao Wang

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