GeminiFocus January 2019 - Page 17

During the progress review, the team pre- sented a design for a slit viewing camera to reduce target acquisition time, and we now intend to make this subsystem part of the instrument’s baseline. A slit viewing camera reduces operational overhead and gener- ally increases overall efficiency. The project’s E2V engineering grade devices arrived earli- er this year (Figure 2). SwRI reported that the four science grade E2V detectors and the four HAWAII-2RG arrays have updated ear- lier delivery dates in Q1 2019, before CDR. New Integral Field Units for GNIRS Gemini has a long-term commitment to produce user-motivated upgrades to the operating instruments at both sites. The In- strument Upgrade Program (IUP) provides funding to upgrade existing operational in- strumentation through community-created science-driven proposals, creating a new instrument capability at the Observatory. After the public request for proposals issued in 2017, the highest ranked proposal was to return integral field unit (IFU) capabilities to the Gemini Near-InfraRed Spectrometer (GNIRS), a project lead by Ray Sharples from the University of Durham. Ray and his team will build and commission two new IFUs for GNIRS, to replace the one that was destroyed in a 2007 accident. The first IFU will have similar specifications to the original GNIRS IFU, with a field of view of approximately 3 x 5 arcseconds and a spatial sampling of 0.15 arcseconds. It will be opti- mized for observations over the full GNIRS wavelength range from 1.0 to 5.4 microns. The second IFU will be AO-optimized over the 1.0- to 2.5-micron wavelength range, with a field of view of approximately 1.0 x 1.5 arcseconds and a spatial sampling of 0.05 arcseconds. The GNIRS IFUs will comple- ment those of Gemini’s Near-infrared Inte- January 2019 gral Field Spectrometer with extensions in wavelength out to the thermal infrared L & M bands, and spectral resolutions up to R ~ 18,000. In December we finalized the contract with the team for the work. We will hold a proj- ect kickoff in January 2019, and commis- sioning and science verification of both IFUs is planned for November 2020. We plan to offer the IFUs under a shared risk mode in 2021A. Re-commissioning of the IFU mode for GNIRS will open up a unique window for spatially resolved spectroscopy on Gemini, including study of the kinematics of stellar outflows around high-mass young stellar objects, probing the active galactic nucle- us-starburst connection, estimating black hole masses from infrared line diagnostics, resolved spectroscopy of gravitationally lensed galaxies, and resolving jet dynamics in Herbig-Haro objects. The project will be entirely based at the Centre for Advanced Instrumentation (CfAI) at Durham University, where the origi- nal GNIRS IFU was designed and built. The project will exploit the in-house diamond machining facilities that have since been used to deliver successful image slicing IFU instruments for the James Webb Space Tele- scope (NIRSpec IFU) and European Southern Observatory’s Very Large Telescope (KMOS). This facility was not available at the time of manufacture of the original GNIRS IFU and will enable substantial improvements in performance. GIRMOS Project Ready to Roll The Gemini InfraRed Multi-Object Spectro- graph (GIRMOS) is a welcome addition to the Gemini Visiting Instrument Program. This powerful new instrument is being de- signed to have the ability to observe mul- tiple sources simultaneously at high angular resolution while obtaining spectra at the GeminiFocus 15