Hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  Hourglass nebula  ·  Lagoon nebula  ·  M 20  ·  M 21  ·  M 8  ·  NGC 6514  ·  NGC 6523  ·  NGC 6526  ·  NGC 6530  ·  NGC 6531  ·  NGC 6546  ·  The star 4Sgr  ·  The star 7Sgr  ·  The star 9Sgr  ·  Trifid nebula
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M8, M20, M21, 



    
        

            Benoit Gagnon
M8, M20, M21
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M8, M20, M21

Technical card

Imaging telescopes or lenses: Takahashi FSQ106ED

Imaging cameras: QSI 683 wsg-8

Mounts: Astro-Physics Mach 1 GTO

Guiding telescopes or lenses: Takahashi FSQ106ED

Guiding cameras: Starlight Xpress Loadstar

Focal reducers: Takahashi Reducer QE 0.73X F/3.65

Software: Photoshop CS5  ·  CCDStack 2+  ·  Diffraction Limited MaximDL 5 Pro

Filters: Astrodon Tru-Balance E-Series R  ·  Astrodon Ha 5mm  ·  AstroDon Tru-Balance E-Series Blue  ·  Astrodon Tru-Balance E-Series G


Dates:June 22, 2014

Frames: 51x300" (4h 15')

Integration: 4h 15'

Avg. Moon age: 24.92 days

Avg. Moon phase: 22.20%


Basic astrometry details

Astrometry.net job: 305989

RA center: 18h03m31s

DEC center: -23°3610

Orientation: 76.414 degrees

Field radius: 1.647 degrees


Resolution: 620x467

Locations: Observatoire de l'Etoile Mysterieuse (OEM), Montreal, Quebec, Canada

Description

First try on this trio, M8, M20, M21 LRGB with a touch of Ha (20%) taken from Hemmingford, Quebec, Canada on the 22 June 2014, 12 X 300 secs LRGB and on the 8 June 2014, 15 X 300 secs Ha.

FSQ106ED @ f/3.65 (385mm), QSI683WSG-8, AP MACH1 GTO, Maxim DL 5, CCD Stack 2+, Photoshop CS5.

Comments

Revisions

  • M8, M20, M21, 



    
        

            Benoit Gagnon
    Original
  • M8, M20, M21, 



    
        

            Benoit Gagnon
    B
  • Final
    M8, M20, M21, 



    
        

            Benoit Gagnon
    C

Sky plot

Sky plot

Histogram

M8, M20, M21, 



    
        

            Benoit Gagnon