Instrument Announcements

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F-2 is back in operations

January 29th, 2022

F-2 was succesfully checked on January 26th after an intevention that lasted for most of January. New JH and HK gratings were installed and its perfomance will be assesed in the following days. Additionally, the  J_low filter is now permanently installed.

F-2 planned shutdown

November 19th, 2021

An intervention of Flamingos-2 is planned between January 3rd and 21st where the instrument will be offline. The following tasks are planned:

MOS wheel check and preventive work.
Replace the JH/HK spectroscopic filters with higher throughput ones.
Modify the Lyot wheel to allow the installation of the J-low and Y filters instead of the Hartmann masks.
Increase the number of layers in the dewars insulation, to allow more thermal stability.

GMOS-S is back!

October 8th, 2021

After a thermal cycle performed over the weekend, the detector amplifier #5 is back to its normal perfromance. CCD1 CTE is also nominal, and OIWFS performance is OK after the succesful repair that had been performed during September. Therefore GMOS-S is back at full capacity.

GMOS-S update

September 27th, 2021

GMOS was installed on the telescope, but it is not available yet due to the issue with CCD2 on the GMOS detector array, which features enhanced noise structure.  The troubleshooting will be carried away during this week. 

GMOS-S OIWFS out of service

August 13th, 2021

UPDATE (Sep 03): the repair work will extend through mid-September. The reason for this is that one of the optical components of the OI probe needs to be re-attached to the pickoff arm after it was found loose. The work will also involve the corresponding optical alignment check.

Due to a mechanical failure, The GMOS-S OIWFS will be out of service at least for the rest of August. A repair plan at the CPO Instrument Lab is being worked on. As a consequence of this situation, GMOS-S will be available only with PWFS2 as guiding option.

Zorro available with a single camera

July 22nd, 2021

The Zorro blue filter wheel, that had been faulty since last March, was succesfully replaced last week. An unfortunate side-effect of the procedure is that the red and blue cameras are now misaligned by about 6 arcsecods, a shift bigger than the speckle field-of-view, which makes simultaneous observations with both cameras in speckle mode impossible. Both cameras are working fine, only independently. New PIs should therefore indicate which camera they want to use. Both cameras can still be used, but this will imply doubling the requested time.