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Comments, August '07

Hi Everyone,

Michelle spectral flats

28 Feb 2005

It has recently been determined that all spectral flats using the low resolution 10um grating obtained prior to Feb 27, 2005 were saturated. This means that:

  1. all unratioed spectra that have been flatfielded prior to then have incorrect spectral shapes;
  2. all spectra of extended sources that were ratioed by spectra of a point source (std) have incorrect shapes.

These differences are not huge, but are noticeable.

Michelle System Verification Plan

The following letter is being circulated to the Gemini community as of September 14, 2004.

Announcement to Michelle Users

Jean-Rene Roy, Associate Director Gemini North

29 May 2003

End of First Michelle Engineering Run on Gemini

13 Mar 2003

Michelle is on Gemini and will have one final night of alignment tests on March 17, prior to being removed from the telescope for about three months. During that period it is expected that the dead array channel will be revived and the internal optical alignment will be adjusted/improved. In addition, there will be work done at the telescope to increase the cooling efficiency and thereby reduce the detector temperature.

Last update March 13, 2003; R. S. Fisher & T. R. Geballe


Jason, please turn this into just a heading/divider, like you're going to do with the "NORTH" link

Hurricaine Flossie Update

With the possibility of  dangerous conditions associated with the Pacific hurricane Flossie, the Gemini Observatory offices in Hilo, Hawaii and the facilities on Mauna Kea will be closed on Monday night and Tuesday (day and night).

For more information on the current status of the storm see the Central Pacific Hurricane Center:

Updates will be provided here as circumstances require and allow.