Rapid Eye Mount telescope

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Rapid Eye Mount telescope
The REM Telescope pointing at the Milky Way
Alternative namesREM Telescope Edit this at Wikidata
Part ofLa Silla Observatory Edit this on Wikidata
Location(s)Coquimbo Region, Chile Edit this at Wikidata
Coordinates29°15′S 70°44′W / 29.25°S 70.73°W / -29.25; -70.73Coordinates: 29°15′S 70°44′W / 29.25°S 70.73°W / -29.25; -70.73 Edit this at Wikidata
OrganizationINAF Edit this on Wikidata
Altitude2,375 m (7,792 ft) Edit this at Wikidata
Wavelength450 nm (670 THz)-2,300 nm (130 THz)
Built2002 Edit this on Wikidata–2003 Edit this on Wikidata (2002 Edit this on Wikidata–2003 Edit this on Wikidata) Edit this at Wikidata
First light25 September 2003 Edit this on Wikidata
Telescope styleoptical telescope
Ritchey–Chrétien telescope
robotic telescope Edit this on Wikidata
Diameter0.6 m (2 ft 0 in) Edit this at Wikidata
Secondary diameter0.23 m (9.1 in) Edit this at Wikidata
Angular resolution1.16 arcsecond Edit this on Wikidata
Focal length1.32 m (4 ft 4 in) Edit this at Wikidata
Mountingaltazimuth mount Edit this on Wikidata Edit this at Wikidata
Enclosuredome Edit this on Wikidata
Websitewww.rem.inaf.it Edit this at Wikidata
Rapid Eye Mount telescope is located in Chile
Rapid Eye Mount telescope
Location of Rapid Eye Mount telescope

The Rapid Eye Mount telescope (REM) is a fully automatic, 60 cm aperture telescope located at ESO's La Silla Observatory at 2,400 metres altitude on the edge of the Atacama Desert in Chile. The telescope's aim is to catch the afterglows of gamma-ray bursts (GRBs). REM is triggered by a signal from a high-energy satellite such as Swift and rapidly points to the detected location in the sky. It is operated for the Italian National Institute for Astrophysics since 2002.[1]


The REM telescope and its instruments in daylight

The telescope has been designed to be a fast pointing instrument, and its relatively small size is in fact balanced by a 10°/s accurate fast pointing. This velocity makes REM suitable for immediate response to random alerts.[2]

The telescope hosts two instruments: REMIR, an infrared imaging camera, and ROSS, a visible imager and slitless spectrograph. The two cameras can observe simultaneously thanks to a dichroic placed before telescope focus the same field of view of 10×10 arc minutes. In the infrared range from 1 to 2.3 µm REMIR can use a (z′, J, H, K′) filter set. ROSS is equipped with a standard filter set (V, R, I) and an slitless Amici prism.

The observing procedure is completely robotic and the nightly schedule is optimized for the observation of scheduled targets but it is immediately overdriven by GRB (or other) alerts. Typically REM can observe the new target after 30 seconds from notification.

REM has been installed in its place during June 2003 and has been gathering data on GRB and other sources since then. Also it is a bench for experimental instrumentation and equipment.

In 2006 a wide-field camera parallel to the REM telescope, the TORTORA camera (Telescopio Ottimizzato per la Ricerca dei Transienti Ottici RApidi) was installed. TORTORA has a field of view of 24°x32° through an objective of 120 mm diameter. The instrument was optimized for photometry of fast transients with a best time resolution of about 0.1 s.

The observatory is operated for the Instituto Nazionale di Astrofisica by the REM Team.[3]

Main results[edit]

Since its installation and commissioning at ESO, REM rapid and multi-band observations allowed to contribute to several important discoveries in some cases widely reported by ESO press releases; for instance, the observations a few seconds after its discovery of GRB060418, GRB06067A and GRB080319B.

In addition, a larger set of observations of targets different from GRBs has been performed, securing long time series of data for variable stars, AGNs, etc.


  1. ^ "Rapid Eye Mount telescope". ESO. Retrieved 19 August 2015.
  2. ^ Chincarini, Guido; REM team (2003). "The last born at La Silla: REM, The Rapid Eye Mount" (PDF). The Messenger (113): 40–44. Bibcode:2003Msngr.113...40C.
  3. ^ "National Institute for Astrophysics—Home". INAF. Retrieved 19 August 2015.

External links[edit]

See also[edit]