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Contains:  Butterfly cluster, M 6, M 7, NGC 6334, NGC 6357, NGC 6383, NGC 6405, NGC 6416, NGC 6444, NGC 6475, The star Alnasl (γ2Sgr), The star Shaula (λSco)
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Region of the Scorpius-Sagittarius Milky Way, 



    
        

            gigiastro
Region of the Scorpius-Sagittarius Milky Way
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Region of the Scorpius-Sagittarius Milky Way

Technical card

Imaging telescope or lens:Olympus Zuiko 180mm f/2,8

Imaging camera:Olympus OM 1

Mount:Manfrotto Art 144 professional tripod

Guiding telescope or lens:Celestron C5 Schmidt-Cassegrain

Guiding cameras:

Focal reducers:

Software:PixInsightNoel Carboni's StarSpikes Pro 4Elements Photoshop

Filter:Skylight 1A

Accessories:


Resolution: 1820x1188

Dates:July 15, 1991July 16, 1991

Frames:
Skylight 1A: 1x300" ISO3200
Skylight 1A: 1x420" ISO3200

Integration: 0.2 hours

Darks: 0

Flats: 0

Flat darks: 0

Bias: 0

Avg. Moon age: 4.73 days

Avg. Moon phase: 23.46%

Bortle Dark-Sky Scale: 3.00

Mean SQM: None

Mean FWHM: None

Temperature: 7.50


Basic astrometry details

Astrometry.net job: 1873131

RA center: 17h 46' 31"

DEC center: -33° 40' 1"

Pixel scale: 21.570 arcsec/pixel

Orientation: 0.863 degrees

Field radius: 6.511 degrees


Locations: Passo Giau (Alps), Cortina d'Ampezzo, Belluno, Italy

Data source: Traveller

Description

During the 47 minutes between the two photos, the Milky Way flows over the mountains (Dolomites, blurry).
Parrot's Head Nebula (B 87) - M6 (Butterfly Cluster) - M7...Cat's Paw Nebula (NGC 6334)...
Darkness of observing site: Bortle's class 3 (naked-eye limiting magnitude: 6.6–7)
Seeing 3 (Antoniadi)
Manfrotto Art 144 professional tripod "equatorialized"
Manual guiding (without tracking motor)
Level over sea (m): 2246
Fujichrome P 1600 RS Professional D -> 3200 ISO (diafilm)
1x420" + 1x300"

Comments

Author

gigiastro
gigiastro
License: None (All rights reserved)
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Region of the Scorpius-Sagittarius Milky Way, 



    
        

            gigiastro