Hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  Hourglass nebula  ·  Lagoon nebula  ·  M 20  ·  M 8  ·  NGC 6514  ·  NGC 6523  ·  NGC 6526  ·  NGC 6530  ·  NGC 6544  ·  NGC 6546  ·  The star 7Sgr  ·  The star 9Sgr  ·  Trifid nebula
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M8 & M20 - The Lagoon and Trifid Nebulae (Ha-SHO), 



    
        

            Olivier Ravayrol
M8 & M20 - The Lagoon and Trifid Nebulae (Ha-SHO)
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M8 & M20 - The Lagoon and Trifid Nebulae (Ha-SHO)

Getting plate-solving status, please wait...
M8 & M20 - The Lagoon and Trifid Nebulae (Ha-SHO), 



    
        

            Olivier Ravayrol
M8 & M20 - The Lagoon and Trifid Nebulae (Ha-SHO)
Powered byPixInsight

M8 & M20 - The Lagoon and Trifid Nebulae (Ha-SHO)

Technical card

Imaging telescopes or lenses: Skywatcher 80ED black diamond 600/80 (F7,5)

Imaging cameras: Canon 450D modifié Astrodon

Mounts: Orion Sirius EQ-G (HEQ5) - belt mod

Guiding telescopes or lenses: Orion Short Tube 80/400

Guiding cameras: iNova PL1-M

Focal reducers: Televue .8 Reduce/flattener for TV-85

Software: Adobe Phosotshop CS5  ·  Adobe Lightroom 5.4

Filters: Astronomik CCD SII 12nm Canon EOS Clip  ·  Astronomik CCD OIII 12nm Canon EOS Clip  ·  Astronomik CCD Ha 12nm Canon EOS Clip

Accessory: Pierro-Astro Masques de BAHTINOV  ·  Lacerta Flatfieldbox 290mm  ·  Pierro-Astro USB autoguider


Dates:Aug. 20, 2017Aug. 21, 2017Aug. 15, 2018

Frames:
Astronomik CCD Ha 12nm Canon EOS Clip: 24x360" (2h 24') ISO800 bin 1x1
Astronomik CCD OIII 12nm Canon EOS Clip: 18x360" (1h 48') ISO800 bin 1x1
Astronomik CCD SII 12nm Canon EOS Clip: 5x360" (30') ISO800 bin 1x1

Integration: 4h 42'

Darks: ~4

Flats: ~26

Bias: ~100

Avg. Moon age: 20.65 days

Avg. Moon phase: 8.05%

Bortle Dark-Sky Scale: 5.00


Basic astrometry details

Astrometry.net job: 3250333

RA center: 18h 4' 10"

DEC center: -23° 55' 51"

Pixel scale: 2.254 arcsec/pixel

Orientation: 270.202 degrees

Field radius: 1.504 degrees


Resolution: 4002x2660

Locations: Observatoire personnel, Tournefeuille, Haute-Garonne, France

Data source: Own remote observatory

Description

HaO-SHO
Luminance with Ha & OIII layers, Color with Ha,OIII,SII - filters narrow band 12nm
Ha:2h24, OIII:1h48, SII:30mn exposure time at 800 iso (Tournefeuille, France)
600/80 mm Refractor – 450D EOS filter removed - Ha, OIII, SII filters
Preprocessing with IRIS (Christian Buil software)
Image processing with Photoshop
Final touch with Lightroom

Comments

Revisions

  • M8 & M20 - The Lagoon and Trifid Nebulae (Ha-SHO), 



    
        

            Olivier Ravayrol
    Original
  • M8 & M20 - The Lagoon and Trifid Nebulae (Ha-SHO), 



    
        

            Olivier Ravayrol
    B
  • Final
    M8 & M20 - The Lagoon and Trifid Nebulae (Ha-SHO), 



    
        

            Olivier Ravayrol
    C

B

Description: New pretreatment with SIRIL software, New SHO treatment technic, New noise reduction with Noiseware plugin

Uploaded: ...

C

Description: Aigrettes main star correction

Uploaded: ...

Sky plot

Sky plot

Histogram

M8 & M20 - The Lagoon and Trifid Nebulae (Ha-SHO), 



    
        

            Olivier Ravayrol