... NGC 300[*]
Based on observations made with ESO Telescopes at the La Silla Observatory. 
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... Imager[*]
Hereafter we will use the term "WFI'' for any Wide Field Imager instrument, and "WFI@2.2'' when refering to the Wide Field Imager at the MPG/ESO 2.2 m telescope. 
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... EIS[*]
ESO Imaging Survey. 
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... COMBO-17[*]
MPIA Heidelberg. 
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... number[*]
Only about a dozen papers based on WFI@2.2 data have been published up to April 2002. 
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... program[*]
ASTROVIRTEL cycle 2: Erben et al., Gravitational lensing studies in randomly distributed, high galactic latitude fields. 
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...[*]
http://www.stecf.org/astrovirtel 
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...querator[*]
http://archive.eso.org/querator 
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... DIMM[*]
Difference Image Motion Monitor. 
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... properties[*]
The anisotropy threshold depends on the overall quality of a particular data set. In general we rejected exposures with anisotropies larger than $\sim $$6\%$. 
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... [*]
http://www.eso.org/science/eis 
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... Terapix[*]
http://terapix.iap.fr 
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...FLIPS[*]
http://www.cfht.hawaii.edu/~jcc/Flips/flips.html 
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...Eclipse[*]
http://www.eso.org/projects/aot/eclipse 
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...Imcat[*]
http://www.ifa.hawaii.edu/~kaiser/imcat 
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...LDAC[*]
ftp://ftp.strw.leidenuniv.nl/pub/ldac/software 
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... skyflats[*]
For WFI@2.2 m telescope dome flats are inferior compared to skyflats. 
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... assumed[*]
This assumption only holds for photometric nights. In non-photometric nights it can be impossible to remove fringing in the I-band, since the model is changing within minutes on scales smaller than the field of view of a single CCD. 
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... prominent[*]
A ZEMAX analysis (Philipp Keller, private communication) for the 2.2 m Ritchey Chretien telescope design and WFI@2.2's focal reducer shows that the radial field distortion for this layout increases with $\delta=a_1 r^2 + a_2 r^6$. However, the total amplitude of this distortion is very small ($\sim $30 pixels). 
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...Astrometrix[*]
http://www.na.astro.it/~radovich/WIFIX/astrom.ps 
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... CCD[*]
Zeropoint variations for images taken with WFI@2.2 that were not superflat corrected are described in: http://www.ls.eso.org/lasilla/sciops/wfi/zeropoints 
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... feasible[*]
A colour image made from this data set can be found at http://www.eso.org/outreach/press-rel/pr-2002/phot-18a-02-hires.jpg 
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Copyright ESO 2003