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

Equipment

Imaging Telescopes Or Lenses
Takahashi FSQ106ED
Imaging Cameras
QSI 683 wsg-8
Mounts
Astro-Physics Mach 1 GTO
Filters
Astrodon Tru-Balance E-Series R · Astrodon Ha 5mm · AstroDon Tru-Balance E-Series Blue · Astrodon Tru-Balance E-Series G
Accessories
Takahashi Reducer QE 0.73X F/3.65
Software
Photoshop CS5 · CCDStack 2+ · Diffraction Limited MaximDL 5 Pro
Guiding Telescopes Or Lenses
Takahashi FSQ106ED
Guiding Cameras
Starlight Xpress Loadstar

Acquisition details

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.2

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