Hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  M 20  ·  M 21  ·  NGC 6514  ·  NGC 6531  ·  Trifid nebula
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M20 Narrow Band (Ha and O III) - natural colors blend, 



    
        

            Davide Manca

M20 Narrow Band (Ha and O III) - natural colors blend

Imaging telescopes or lenses: Officina Stellare Veloce RH200

Imaging cameras: QSI 683WSG

Mounts: Skywatcher N-EQ6 pro

Guiding telescopes or lenses: Officina Stellare Veloce RH200

Guiding cameras: Lodestar

Software: PixInsight  ·  Maxim DL

Filters: OIII  ·  Astrodon Ha 3nm Tru-Balance

Accessory: Finger Lake Instruments Atlas Focuser


Dates:Aug. 25, 2014Aug. 29, 2014

Frames:
Ha: 6x600" bin 1x1
OIII: 8x600" bin 1x1

Integration: 2.3 hours

Avg. Moon age: 16.49 days

Avg. Moon phase: 6.80%


Basic astrometry details

Astrometry.net job: 4076711

RA center: 18h 2' 27"

DEC center: -23° 0' 28"

Orientation: -90.744 degrees

Field radius: 0.969 degrees


Resolution: 620x450

Locations: Merlino, Canossa, RE, Italy

Description

Red= Ha
Green= O III
Blue= OIII + 20% Ha

Comments

Sky plot

Sky plot

Histogram

M20 Narrow Band (Ha and O III) - natural colors blend, 



    
        

            Davide Manca