Minutes for the TERAPIX meeting 17th December 2014
Present: Patrick, Henry, Olivier, Nawfel, Fred (part of meeting).
Henry finds out what the CASU algorithm is to do sky subtraction for nebula
Nawfel will update the SR82 doc with the correct zero-point.
Patrick will copy VIKING data to TERAPIX machines so that Nawfel can start processing them.
Patrick will send a mail to teralist listing what has been backuped
Patrick will investigate what data can be removed from the machines for accounts which are no longer active.
(all) old machines will be isolated, backed-up and turned off.
Fred will send a mail to the IAP concerning the old TERAPIX machines and asking if anyone is interested in them (after any useful hardware has been removed).
Fred will back up CFHTLS releases, PI data on external 4TB disks.
Actions from last time
Henry has copied all the NB data to the FTP server.
Nawfel has finished SR82 processing.
Christophe has gotten the old machine cosmix2 as a web-server.
Nawfel has written the stripe 82 documentation and distributed the data with documentation to Jean-Paul.
Note the zero point was set to be 30 AB
Jean-Paul will look at the data this week.
Processing finished OK.
Second pass doesn't work with Pagani data.
There is always a residual background that cannot be removed.
There could be a method a CASU which aid in processing of Nebula (henry will investigate)
Ultravista DR2 (Henry)
Phase 3 data has been delivered at ESO (catalogues, images, documentation).
No GAIN keyword has been provided in the images.
ESO has asked about providing corresponding GAIN map, but in the end decided not to deliver the gain map (gain map not compatible .
TERAPIX2 (Patrick, Fred)
400 Gb ram (arrived) and installed on mix32. Fred has started memtest on the new machine
No news yet for the other machines.
Fred gave some advice to service info for condor.
TERAPIX2 physical machine installation not optimal: as the machines are not working yet this is lower priority.
Apparently machines not configured for automatic shutdown (software is not available for red hat).
CREDITs TERAPIX (Patrick)
spare disks will arrive with new backup machine (fcix10)
archive disks 4 Tb ordred
small material also bought.
Machines TERAPIX (Patrick, Fred
Fred sent around a list of machines which will be switched off: these machines could be offered to folk at IAP if they want them.
These machines have been backed up on other machines
The remaining material will be backed up on new 4Tb disks and the machines switched off.
The logical next step after the old machines are switched off is to move the new machines into the cluster TERAPIX2
Schedule for DR3: probably start processing September 2014.
This means that TERAPIX2 should be operation May-June. This means that all the pipeline software should be able to run on TERAPIX.
Contract from Nawfel will finish in September 2013. Not sure how we will mange process
VIKING data (all) -Idea is to reduce VIKING data which overlaps with the CFHTLS. W1, (small amount of data in W4 but not important)
Still download limit in place. Do we need to email CASU?
need to find space for VIKING. Fcix9 raid1 is one possibility.
CFHTLS calibration T07
Henry reports problem of systematic offset between T06 and T07
individual stacks for the wide should be the same before and before
need to talk with jean-charles!
One idea from patrick: look at magnitudes on individual images with the PHOT_C PHOT_K values supplied and make comparison
Next TERAPIX meeting: 14:30, Friday 10th January 2014