Corona Australis Molecular Cloud region

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This molecular cloud is very faint and the brightest part includes the two blue reflection nebulae NGC 6726. The dark nebula is cataloged as Be 157. Much further lies the globular cluster NGC 6723. .

Technical data
Optics Pentax 75 apo refractor
Focal Length 500 mm
Focal Ratio f/6.7
Exposure Time 3 h (single exp of 10 min)
CCD Canon EOS 5D with Baader filter
Sensitivity 800 ISO
Location Tivoli Farm (Namibia) at 1350 m height
Date
31 August 2011
Mount Kenko NES
Tracking Lodestar with a small refractor (F.L. 100 mm, aperture 23 mm)
Temperature and humidity T= +15°C, RH=28%
Sky brightness at zenith (with SQM-L) 22.0 mag/arcsec^2
Notes This image is a collaborative effort of the Namibia 2011 expedition. Processing: Lorenzo Comolli. Images by: Lorenzo Comolli, Luigi Fontana, Giosuè Ghioldi, Emmanuele Sordini.


HTML Editing and Publishing by Lorenzo Comolli. Email me at comolli@libero.it.
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