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.
Gemini is now accepting proposals for observing time in Semester 2022A. The submission deadline varies with participant. A new version of the Phase I Tool (PIT) has been released to support proposal submissions.
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.
It was recently reported that the observed counts in spectra seemed to be lower than expected on CCD1 for some programs - also, odd emission-like features (‘spikes’) were noticed in the CCD1 portion on stellar spectra that are known to be featureless. All this applies only to data acquired during the ‘bad-CTE’ periods of CCD1, i.e. between:
As Gemini South resumed nighttime operation, GMOS-S was checked out during last weekend and started operating in queue mode. To be noted is that the CCD1 CTE problem reported on Jan10, 2020 is still present, meaning that programs using the N&S mode for spectroscopy are potentialliy affected, as well as IFU programs. These programs will remain on hold, with the exception of programs where this issue has no impact on the science (e.g. region of interest outside of CCD1)
Gemini North is accepting proposals for the Fast Turnaround (FT) program. We are not yet accepting proposals for Gemini South. Here, we give information specific to this proposal cycle. Please see the other FT pages - particularly the rules - for general information about the program. FT-specific proposal templates must now be used for all FT proposals; see the "PIT information" section below.
GMOS-N data taken between the nights of 31 August 2020 and 8 September 2020 show a new flat field feature from dust in the optics, as marked in the image below. A preliminary cleaning of the accessible GMOS optics performed during daytime on 3 September 2020 was not successful in removing the new dust feature and the overall effects were found to be negligible.
Gemini North is accepting proposals for the Fast Turnaround (FT) program. We are not yet accepting proposals for Gemini South. Here, we give information specific to this proposal cycle. Please see the other FT pages - particularly the rules - for general information about the program. FT-specific proposal templates must now be used for all FT proposals; see the "PIT information" section below.
Gemini North is accepting proposals for the Fast Turnaround (FT) program. We are not yet accepting proposals for Gemini South. Here, we give information specific to this proposal cycle. Please see the other FT pages - particularly the rules - for general information about the program. FT-specific proposal templates must now be used for all FT proposals; see the "PIT information" section below.
As Gemini South is closed for operations from last Monday due to the Covid-19 outbreak (see https://www.gemini.edu/news/gemini-south-shutdown-until-further-notice), GMOS-S has been warmed up and switched off. This shutdown will last until further notice