M8 Lagoon Nebula

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M8, the Lagoon Nebula, is a very bright and large nebula in Sagittarius. It is even visible by naked eye from a dark sky, and it's a beauty to observe with any instrument, from the smaller binocular to the larger dobsonian. For a wider field of view, imaged with a Pentax 75, see here.

Technical data
Optics Takahashi FS152 apo refractor
Focal Length 1216 mm (direct focus, no flattener)
Focal Ratio f/8
Exposure Time 3 h (18x10 min)
CCD Canon EOS 5D with Baader filter
Sensitivity 800 ISO
Location Tivoli Farm (Namibia) at 1350 m height
28 August 2011
Mount Fornax 51
Tracking SXV-H5 on a Vixen 80/640 apo refractor
Temperature and humidity T= +15°C, RH=36%
Sky brightness at zenith (with SQM-L) 21.9 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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