News |
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A new
polarization unit will be offered in P79; it will allow to
measure circular polarimetry, thanks to a quarter-lambda retarder plate
(14/08/2006) |
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EFOSC2 calibration
plan now on-line (10/05/2006) |
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A short manual
of the quick-look tool for long-slit spectroscopy is now available
(27/04/2006) |
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Polarization:
Preliminary analysis of instrument polarization shows < 0.1% at
field center, and ca. 0.4% at the edge. (07/07/2005) |
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New
Webpage: A new webpage has been created to give a short
overview on the instrument: Instrument
Overview. (11/02/2005) |
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New
Grisms: All broken grisms have been either repaired or
replaced, the last being grism #15 replaced by #17. The new
efficiencies and further info can be found at the EFOSC grisms page.
(19/11/2004) |
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Fringing
pattern determined: The fringing patterns for the filter
i#705 has been determined and put on this page.
(17/11/2004) |
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Zero-Point
monitoring page updated: The zero-points are measured in each
photometric night when EFOSC is mounted. The results are stored in the EFOSC ZP-page.
(13/11/2004) |
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New Grism Efficiencies:
System efficiencies have been measured for all available grisms. For
details, see EFOSC
grims page. (31/08/2004) |
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Pattern
in Bias Frames:
A
pattern of probable electronic nature is sporadically observed in Bias
frames taken with binning 2x2. For
details, see Pattern
in Bias 2x2. (22/02/2007) |
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Grism #10 decommissioned: Grism #10 (6280-8200 Å)
suffered a major damage and is no longer offered. (14/06/2007)
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Please mail to ls-efosc
for comments, suggestions and to report errors and inaccurate
statements in the web pages and manuals. |