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The repairs to the shutter drive unit on the exterior of the Gemini North dome appear to be reaching the home stretch with a plan to reinstall the repaired drive unit on Monday, February 10th and be back on the sky on February 12th. As always, this is assuming the weather allows the work to progress as planned and no further complications occur.
Spectral templates (usually late type stars) are required for the analysis of kinematical data on external galaxies (or other stellar ensembles). In the near-IR, the most commonly used features are the CO overtone bands at λ > 2.3µm.
The Gemini eNewscast is a monthly electronic distribution of information for users of Gemini Observatory.
Excellent Progress with NIRI Flexure; Update on Acceptance Tests, Queue and System Verification Observations
26 September 2001
Using dedicated GMOS images (pre-imaging) for designing MOS masks has the advantages of being independent of the accuracy of any astrometric calibration and immune against proper motions of alignment stars or objects. However it also requires more telescope time, and requires time between the start of the semester and the start of the MOS observations for the pre-imaging to be taken and the mask to be designed.
The Gemini North enclosure (left) shown with the crane used for the recent installation of the service platform. This platform will be necessary to make repairs to the failed shutter bearing. Inset shows a closeup of the shutter bearing assembly with the skewed assembly (aqua, at bottom).