REM (Rapid Eye Mount) is a 60 cm diameter fast reacting telescope located in the La Silla premises of the ESO Chilean Observatory (29°15′S and 70°44′W).
The telescope hosts two instruments: REMIR, an infrared imaging camera, and ROS2, a visibile imager with 4 simultaneous passbands. The two cameras can also observe simultaneously thanks to a dichroic placed before telescope focus the same field of view of 10x10 arcmin. Thus, 5 images are obtained at the same time: g,r,i,z,IR.
The Observatory is operated for INAF by the d'REM Team, a delocalized group of people.

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August 6, 2024. For the good and for the bad, with the calm or with the fury, Guido Chincarini left his footprint in many places. REM adventure started with one of them. In the photo "il Chinca" together with "il Conca" (another maker of the REM) discussing during the gOlem day, on 27th of November, 2023. Rest In Peace.

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24 Apr 2026 ◊ Call for proposal INAF AOT54 (October 1st 2026 - March 31st 2027 is open. The deadline is Monday 25th May 2026 at 12:00 UT. All informations and warning for REM are here. For submission package and form please follow the Proposal link.
22 Apr 2026 ◊ Successful maintenance in situ has restored full operativity of REM, including all filters in the infrared camera.
9 Apr 2026 ◊ During the next two weeks REM will undergo a set of maintenance in order to investigate the behaviour of the infrared camera filter wheel. We foresee to stop operations starting tomorrow until 20th of April.