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Dear Astro-Wiser,<br>
<br>
This mail is about initiating <a class="moz-txt-link-abbreviated"
href="mailto:WFI@2.2m">WFI@2.2m</a> archive studies using the
AstroWise system.<br>
<br>
The development of the Astro-Wise system is now fully engaging Phase
II.<br>
Following the conclusions of the workshop in November last year a major
iteration on the Class definitions is currently implemented. The
expectation is, that by the 1 March these implementations will be
completed both on
pipeline level and on database level. <br>
At the same time we are working on a major improvement of the
documentation of the system, which is also expected to be completed
around the 1 March.<br>
>From then on, our system will be ready to host first scientific
projects, clearly still in an experimental phase, but well enough
documented and stabilized to allow pioneer PhD students and others to
run "small" projects.<br>
<br>
At the workshop we discussed how to process <a
class="moz-txt-link-abbreviated" href="mailto:WFI@2.2m">WFI@2.2m</a>
data, particularly
the photometric calibration.<br>
We will use the sky brightness to do the chip-tp-chip calibration,
while the zeropoint will be derived for a single chip. Code for this
will be available, but it will be still laborious to reduce WFI data
due to variations in data acquisition scenarios. Nevertheless, we are
now in a position to ingest and process big quantities
of publicly available WFI data, and for the coming year this will be
important for the development and qualification of the Astro-Wise
system.<br>
<br>
ESO is developing a new data distribution system, using swappable hard
disks, which will be mailed to the users. This new system will be
announced in one of the coming issues of the Messenger. Benoit Pirenne
of ESO's archive group has kindly offered to test this new system with
the OmegaCAM consortium in the coming months. We will buy a couple of
normal IDE hard disks, with special box in which the hard disk slides
(not expensive) which will be
used for this data transfer. Typically, a harddisk will contain 200-300
Gbyte of data, i.e 1600-2400 images with raw data. We can test this
procedure by issuing WFI data requests.
<br>
In Groningen, but also at other Astro-Wise sites we can then ingest
these data into the Awe system, and further process it. OmegaCEN will
reserve sufficient amount of RAID disk towers (typically 2 Tbyte) to
ingest these data and store processed data.<br>
<br>
An involvement of the consortium partners in this activity would be
very much welcomed, and I 'll try to co-ordinate this in the near
future together with Philippe Heraudeau.<br>
Kapteyn and OAC already indicated that they want to request datasets
for their supercluster
projects. <br>
<br>
If you want to participate I would appreciate receiving a "statement of
intent" before 1 February,<br>
whether you want to embark on this an what kind of targets your are
considering.<br>
Next, we will organize some co-ordination for the preparations for a
data
request.<br>
You can check yourself the publicly available part of the archive at <br>
<br>
<a class="moz-txt-link-freetext" href="http://archive.eso.org/wdb/wdb/eso/observations/form">http://archive.eso.org/wdb/wdb/eso/observations/form</a><br>
<br>
It will take some extra effort to analyse /query the archive and thus
it is a good idea to first mail me what you want and we might further
coordinate the querying/analysing work.<br>
<br>
Note, that there are several options to further distribute the data
over the consortium:<br>
- harddisks can be passed along the consortium <br>
- remote processing is an option<br>
- Oracle STREAMS and/or FTP might provide us electronic data
distribution<br>
In any case, all derived calibration data will be shared over the sites.<br>
<br>
So, please if you are interested respond to this message to Philippe
and myself before 1 February.<br>
<br>
looking forward<br>
<br>
Edwin <br>
<br>
<pre class="moz-signature" cols="72">--
----------------------------------------------------------------------
Edwin A. Valentijn OmegaCEN <a
class="moz-txt-link-abbreviated"
href="http://www.astro.rug.nl/omegacen">www.astro.rug.nl/omegacen</a>
Kapteyn Astronomical Institute tel : +31 (0)50 3634011
P.O.Box 800 mobile: +31 (0)6 48276416
NL-9700 AV Groningen e-mail: <a
class="moz-txt-link-abbreviated" href="mailto:valentyn@astro.rug.nl">valentyn@astro.rug.nl</a>
The Netherlands www : <a
class="moz-txt-link-abbreviated"
href="http://www.astro.rug.nl/%7Evalentyn">www.astro.rug.nl/~valentyn</a>
---------------------------------------------------------------------- </pre>
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