Astrophotography by Mario Cogo

The Trifid Nebula - M20 M21 (Sagittarius)

Trifid Nebula M20-M21 

La Nebulosa Trifida "M20" una nebulosa a emissione rossastra circondata da una nebulosa a riflessione azzurra.

Sulla sinistra l'ammasso stellare "M21" formato principalmente da stelle giovani.

- Date / Location : 2 & 8/07/2016 from Tivoli Southern Sky Guest Farm "Namibia"
- Lens / Camera : Astro-Physics "Starfire" Apo Refractor 127mm f/8 - Canon EOS 60D CDS (Baader Modified)
- Mount / Guide : Astro-Physics 1200 GTO -  Lacerta Mgen stand alone autoguider on 9x50 Finderscope
- Exposure Time : Exposures of  1,6 & 10 Min. (5h 10Min Total)  @ 1600 Iso, No Dark - Yes Flat.
- Processing : Image Plus (Calibration), Registar (Alignment), PS6, Image Plus, Nik Collection, Fitswork4 (Processing)
- Note : Good Trasparency - Temp Min. +3 Max. +12C - SQM-L 21,42/21,94

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