What
Was New?
|
AAO WFI/PFU Pages completely revised (Feburary
2002).
New documentaion pages include
WFI
Cookbook - with complete description of the use of WFI for imaging
at the AAT
WFI Performance
- a summary of measured WFI & PFU performace at the AAT
WFI proposers to the AAT should consult the
new WFI Performance page, when preparing
their proposals for semesters from 2002B onwards. |
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PFU and WFI Commissioning - December 2000
The commissioning run for in December was
quite successful. Updates on the WFI/PFU commissioning status can be found
at the AAO
WFI/PFU Commissioning Plan and Status page.
New dark current measures, gains, read noises, SCTEs and
sensitivity estimates are now available.
Also the Direct Imaging calculator now includes measured parameters for
WFI and the triplet corrector.
Finally we will be carried out service
observing. The approved
programmes are here.
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A very drafty set of notes which will be updated as knowledge
of WFI & PFU progresses.
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WFI SDSS Filters
The WFI SDSS filters have arrived. These g,r,i,z filters are 162 x 162mm
in size, and 5.0mm thick (actually the r is 4.7mm thick). They have been
manuafcatured by Barr Associates to the SDSS recipes. A u filter was not
acquired, as the difference between our CCD's q.e. and that of the reference
system's would be sufficiently different that no matter what we do, there
would be significant colour terms. The WFI Schott glass U filter will be
used instead.
Each filter has a 152mm x 152mm clear aperture. They will be mounted
in their own filter holders, and will be available for use on the 40" so
long as they are never removed from their holders. These filters have been
assigned numbers #90-#93 in the AAT
Filter Catalogue. Throughput profiles can be obtained there.
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WFI Focal Plane is assembled.
The following images of the WFI focal plane have been provided by
GL scientific. Yes it does exist! The mosaic is the flattest Gerry Luppino
has ever constructed - look at the reflected light patterns accross the
chip boundaries.
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| WFI Dewar and Electronics viewed from rear (click on image for
larger view) |
WFI Focal plane (click on image for larger view) |
Further images are ozcamexternal.jpg
and ozcamstraps2.jpg
(ozcam is Gerry's quaint name for WFI). |
