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This great galaxy is hardly visible from Italy while grazing the South horizon, and when I've observer high in the sky with a 50 cm Dob, I've finally seen what a treasure is. Unfortunately for it, in the same constellation (Sculptor) another greater galaxy is present (NGC253) and so it is often forgotten. In this photo I've tried to extract the external fain parts, even if the short exposure has a lot of noise.

Zoom at 66% resolution.

Technical data
Optics Takahashi FS152 apo refractor
Focal Length 1216 mm (direct focus, no flattener)
Focal Ratio f/8
Exposure Time 1 h 30 min (9x10 min)
CCD Canon EOS 5D with Baader filter
Sensitivity 800 ISO
Location Tivoli Farm (Namibia) at 1350 m height
29 August 2011
Mount Fornax 51
Tracking SXV-H5 on a Vixen 80/640 apo refractor
Temperature and humidity T= +10°C, RH=40%
Sky brightness at zenith (with SQM-L) 22.1 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.

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