| Date: | 2009-08-18 09:04:00 | |
| Sender: | Bernd Sierk, BKG/TIGO, Concepción <Bernd Sierk <sierk@mail.tigo.cl>> | |
| Subject: | [SLR-Mail] No. 1788: 7405 CONL: TIGO restarts two colour ranging | |
| Author: | Bernd Sierk, BKG | |
| Content: | ******************************************************************************** SLR Electronic Mail 2009-08-18 09:04:00 UTC Message No. 1788 ******************************************************************************** Author: Bernd Sierk, BKG/TIGO, Concepción Subject: 7405 CONL: TIGO restarts two colour ranging Dear colleagues, I am glad to announce that TIGO (7405 CONL) resumed two colour ranging with its Ti:Saph system after operating in near-infra-red only for almost two years. A combination of optical and detector problems was finally fixed early this month and we are regularly sending data in both primary wavelength (847 nm) and second harmonic (423.5 nm) since August 1st. Our ”primary product” will still be data measured in the red (NIR) channel. The blue passes will typically be shorter and less numerous, as the signal is lost earlier. We have successfully tracked in two colours up to Lageos, but not higher. However the blue passes come with significantly less single-shot and (usually) smaller post-fit rms, and therefore might be interesting to analysts. We also hope to contribute to refraction studies using our colourful data. For those of you working with CRD format NP files the blue channel data are not yet available, as we first have to fix a software problem to send two files with different headers. Best regards, Bernie ----------------------------------------------- Dr. Bernd Sierk Bundesamt für Kartographie und Geodäsie (BKG) Observatorio TIGO - Universidad de Concepcion Camino Einstein km 2.5 Concepcion, Chile email: bernd.sierk@bkg.bund.de Tel: +56-41-2207035 Fax: +56-41-2207031 WWW: www.tigo.cl ----------------------------------------------- From: Bernd Sierk ******************************************************************************** |