1 / 13

Site Testing at San Pedro Mártir Observatory

Site Testing at San Pedro Mártir Observatory. Remy Avila. SPM. Where is it ?. Where is it precisely ?. ~ 70 km. San Pedro Mártir Sierra 2800 m above sea level Pine tree area surrounded by desert. SPM. 60 km. 60 km. Orography. Elena Masciadri. Some Climatological Data.

adena-cantrell
Download Presentation

Site Testing at San Pedro Mártir Observatory

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Site Testing at San Pedro Mártir Observatory Remy Avila

  2. SPM Where is it ?

  3. Where is it precisely ? ~ 70 km • San Pedro Mártir Sierra • 2800 m above sea level • Pine tree area surrounded by desert

  4. SPM 60 km 60 km Orography Elena Masciadri

  5. Some Climatological Data • From 10 yrs of weather statisctics (Tapia 1992): • Sky transparency: 56.7 % photometric, 80.4% spectroscopic • Clouds: similar to La Silla, Tololo, slightly better than Mauna Kea • Optical depth at 215 GHz (Hiriart et al. 1997): • Median: 0.22 -> comparable to Mauna Kea • 210 days of measurements

  6. Humidity at the Site (from 21 months) night summer winter 21 months of data Michel et al. 2001

  7. Wind at the Site (from 2 months) • 2 months of data: • January, February 2000 • Confirmed by • Alvarez 1969 • Echevarría 1998 • Conan 2001 Michel et al. 2001

  8. CN2(h)Monitoring with Generalized Scidar 2.1m telescope, 21 March 1997 1.5m telescope, 8 May 2000 20 10-15 15 10-15 10-16 Altitude above sea level (km) 10 CN2(h) ( m-2/3 ) 10-17 5 10-16 0 10-18 4 5 6 7 8 9 10 11 12 5 6 7 8 9 10 11 12 UT UT Observatory altitude

  9. 20 15 Altitude above sea level (km) 10 5 0 10-18 10-17 10-16 10-15 Median Turbulence Profiles 1997 2000 Bars limits: 1st and 3rd quartiles 1.5mT 10-18 10-17 10-16 10-15 20 15 2.1mT Altitude above sea level (km) 10 5 0 10-18 10-15 10-18 10-15 CN2(h) ( m-2/3 ) CN2(h) ( m-2/3 )

  10. Seeing Near the Ground and in the Free Atm. Near the Ground (1st Km) Free atmosphere Total Median: 0.50 0.29 Median: 1.17 1.08 Median: 0.94 0.98 1.5mT 0 0.2 0.4 0.6 0.8 1 With a mean dome seeing: 0.41¨ 0 0.5 1 1.5 2 2.5 0 0.5 1 1.5 2 2.5 0 0.5 1 1.5 2 2.5 Median: 0.56 0.53 Median: 0.44 0.61 Median: 0.77 0.89 2.1mT 0 0.2 0.4 0.6 0.8 1 0 0.5 1 1.5 2 2.5 0 0.5 1 1.5 2 2.5 0 0.5 1 1.5 2 2.5 Seeing (arcsec) Seeing (arcsec) Seeing (arcsec) SPM 97 SPM 2000

  11. Wind profiles Monitoring 2.1m telescope, 21 March 1997 Wind speed Turbulence strength 1.5m telescope, 8 May 2000 20 10-15 15 10-15 10-16 0 6 13 20 26 33 40 m/s 10 CN2(h) ( m-2/3 ) 10-17 5 10-16 10-18 5 6 7 8 9 10 11 12 4 5 6 7 8 9 10 11 12 UT UT Observatory altitude

  12. Outer scale Conan et al. 2001

More Related