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Gemini Planet Imager (GPI): Cleared for Shipment to Gemini South!

In a milestone statement distributed moments ago by the GPI Pre-delivery Acceptance Review Committee, Chair Stephen Goodsell announced that GPI is now clear for shipment from the University of California Santa Cruz to Gemini South in Chile.The Committee’s final report is slated for release on July 26th, but a statement sumarizing the results of the review is available now - GPI Review Committee: Final Day Statement  41 KB


Gemini e-Newscast #29 -- March 2, 2011

Quasar feedback measured

Base Facility Operations on Two Hemispheres!

Gemini South staff Javier Fuentes and Joy Chavez conduct remote observations from the control room in La Serena, Chile.

On February 17th Gemini reached another significant milestone with the celebration of the official handover to Base Facility Operations (BFO) at Gemini South. It took more than 2 years to complete this important step and involved all departments from Gemini South.

Gemini North February Laser Guide Star run cancelled, LGS unavailable in semester 17B.

The Gemini North laser system has suffered a significant set back with a hardware and optics fault. Recovery of the system is unlikely and priority will go to commissioning the South Toptica laser, followed by the North Toptica laser. The February 2017 North LGS run is cancelled, and LGS will not be offered for semester 2017B regular programs at Gemini North. The queue coordinators are identifying LGS programs that can get useful science using a natural guide star or very good (IQ20) seeing conditions.

User-supplied Filters

GMOS users may supply their own filters for queue observations. The policy for doing so and the specifcations for the filters needed are given below.


  1. The users should indicate clearly in their PhaseI proposal that they intend to supply their own filter(s).
  2. The users should indicate clearly in their PhaseI proposal whether they already have the filter(s) needed, or whether they will be purchased at some later time.

Gemini Explores Fading Active Galactic Nuclei ID'd by Galaxy Zoo

Figure 1: Minimum ionizing luminosity of extended AGN-ionized clouds along the projected radius. These Hubble Space Telescope data show a luminosity drop in the last 20,000 years before our direct view of the nucleus, characteristic for all AGN of this study.

Gemini North welcomes Band 4 proposals using GNIRS or NIRI in poor weather conditions

Gemini-North is in need of poor weather programs that can take CC80 or worse and/or IQ Any using NIRI or GNIRS ONLY. If you have an idea for a program that can take such conditions, please see the Poor Weather Proposal Process web page for more information on applying for Band 4 time.

Exposure times

The following five tables provide various exposure time limits. Constraints are due to a number of factors, more than one of which may need to be considered for a given NIRI configuration:

Table 1: Minimum Recommended Exposure Times (sec)