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La Silla - Science Operation Department
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HARPS monitoring


ThAr lamps history

List of actions on the HARPS ThAr lamps: red = ThAr1 (lamp 4), blue = ThAr2 (lamp 5), green = ThAr3 (lamp3), yellow = ThAr4 (lamp3).
Date Intervention on lamp: Supplier Serial Number Current Action Hour met. 1 Hour met. 2 Hour met. 3
30-10-2003 ThAr1 (lamp4) Cathodeon B73089 10.0 mA Lamp died: remove it - - -
30-10-2003 ThAr1 (lamp4) Cathodeon B13773 10.0 mA New lamp: installed - - -
03-11-2003 ThAr2 (lamp5) Cathodeon B73070 8.2 mA Lamp died: remove it - - -
03-11-2003 ThAr2 (lamp5) Cathodeon B13772 8.2 mA New lamp: installed - - -
08-11-2003 ThAr1, ThAr2 - - Hour meters installed 0 0 -
12-11-2003 ThAr1 (lamp4) Cathodeon B13773 7.2 mA Lamp current changed - - -
06-04-2004 ThAr1 (lamp4) Cathodeon B13773 9.0 mA Lamp current changed - - -
11-05-2004 ThAr2 (lamp5) Cathodeon B13772 5.8 mA Lamp current changed - - -
18-11-2004 ThAr2 (lamp5) Cathodeon B13772 5.8 mA Lamp died: remove it 155 3040 -
18-11-2004 ThAr2 (lamp5) Cathodeon B13820 8 mA New lamp: installed 155 3040 -
15-05-2005 ThAr2 (lamp5) Cathodeon B13820 5.6mA Lamp current changed 221 4514 -
01-04-2006 ThAr3 (lamp3) Cathodeon B96358 9.0mA New Lamp 221 4514 0
27-05-2006 ThAr2 (lamp5) Cathodeon B13820 5.6mA Lamp died: remove it 323 6981 24
27-05-2006 ThAr2 (lamp5) Heraeus B00200 9.0mA New Lamp, from new batch 323 6981 24
03-09-2006 ThAr2 (lamp5) Heraeus B00200 7.0mA Lamp current changed 364 7720 30
02-11-2006 ThAr2 (lamp5) Heraeus B00200 7.0mA Retire lamp (contaminated ?) 368 7789 31
02-11-2006 ThAr2 (lamp5) Cathodeon B96358 9.0mA Taken from SPARE 368 7789 31
02-11-2006 ThAr3 (lamp3) Cathodeon B96358 9.0mA Move to ThAr2(lamp5) 368 7789 31
02-11-2006 ThAr3 (lamp3) Cathodeon B00206 10.0mA New lamp 368 7789 31
05-11-2006 ThAr3 (lamp3) Heraeus B00199 10.0mA New lamp (after tests) 368 7800 32
08-12-2006 ThAr3 (lamp3) Cathodeon B13821 9.0mA New lamp 389 8095 44
04-07-2007 ThAr3 (lamp3) Cathodeon B98222 10.0mA Future THAR1 (already Xcalib.) 457 9554 56
31-07-2007 ThAr3 (lamp3) Cathodeon B13773 9.0mA Old THAR1 (for further tests) 481 9748 59
31-07-2007 ThAr1 (lamp4) Cathodeon B98222 10.0mA New lamp, already Xcalib. (1) 481 9748 59
03-12-2007 ThAr2 (lamp5) Cathodeon B96358 8.0mA Lamp current changed 532 10535 72
01-04-2008 ThAr4 (lamp5) Juniper 529294 5.0mA Lamp installed - - -

The lamps of the series B00XXX (Heraeus) seem to be polluted by an unknown contaminant and are not adequate for precise drift measurements.

(1) Cross calibration data are in the DRS computer, in: /data/BACKUP/TH_LAMPS/Cross_calib/


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