| Date: | 2006-05-24 23:29:00 | |
| Sender: | Bernd Sierk, TIGO, BKG <Bernd Sierk <sierk@tigo.cl>> | |
| Subject: | [SLR-Mail] No. 1467: 7405 TIGO resumed operation | |
| Author: | Bernd Sierk, TIGO, BKG | |
| Content: | ******************************************************************************** SLR Electronic Mail 2006-05-24 23:29:00 UTC Message No. 1467 ******************************************************************************** Author: Bernd Sierk, TIGO, BKG Subject: 7405 TIGO resumed operation Subject: 7405 TIGO resumed operation Dear colleagues, it took a little longer than we thought and there´s still a lot to do, but we have finally restarted tracking at Concepción (TIGO). Over the past 8 weeks, we replaced our 10 Hz two color laser as well as our event timing system. The new laser is also a Ti:Saph two color system (847 and 423.5 nm as before), but the oscillator is now passivley mode locked using SESAM mirror technology. The shot frequency is 100 Hz (I like to call it a hHz or 0.1-kHz system). Both regenerative and subsequent multipass amplifier are pumped by a diode pumped Nd:YAG laser (Jedi, manufactured by THALES laser), so no more flashlamps. Oscillator and reg. amp. were manufactured by HiQ laser, Austria, and resemble those you might have seen in Graz and Herstmonceux. The pulse energy after the amplifiers is around 15 mJ. Last week we have sent a few observations to ILRS and they seem to look good, but analysists please notify us if you come across strange results. At present our normal point analysis only uses 10 % of the data as we still have to adapt the software for the higher repetition rate (so don´t be surprised the full rate files don´t look bigger than before the upgrade). We hope to have that fixed by next week. Regards ------------------------------------------------------------------------------- Dr. Bernd Sierk Bundesamt fuer Kartographie und Geodaesie (BKG) Observatorio TIGO Universidad de Concepción Concepción, Chile email: sierk@tigo.cl Tel: +56-41-207035 Fax: +56-41-207031 ------------------------------------------------------------------------------- From: Bernd Sierk ******************************************************************************** |