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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

GIFS Bidders Conference Information

On the 31st October Gemini Observatory will host an interactive remote Bidders Conference for participates to learn more about the GIFS RfP.

Participants can attend by phone or by polycom. Gemini will host two equivalent sessions to allow for participation across many different time zones.

Session 1: 11:00 – 13:30 CLST
Session 2: 19:00 – 21:30 CLST

If you plan on attending one of the sessions, please email gifs_rfp@gemini.edu and inform us which session you plan on attending and how. (i.e. my phone or polycom)

Mask-making Software

The current version of the GMOS Mask Making software (GMMPS) is v0.4.2, released in 2014-10-28 for Linux and Mac OS X. This is an interim version to provide support for the new Hamamatsu detectors in GMOS-S. It is not yet fully backwards compatible (see below).

Version 0.4.2 fixed several memory leaks and other bugs that could prevent GMMPS from creating the ODF FITS tables we need to cut the masks. This has occurred with newer gcc compilers.

Observing Strategies

 

Long-slit

The gaps between the three detectors in GMOS cause gaps in the spectral coverage, see the example. The size of the gaps in wavelength space depends on the grating used, but is typically a few nanometers. If continuous spectral coverage is essential for your program, consider using two configurations of the grating with central wavelengths 3-5 nm different.

A Pair of Stellar Corpses Surrenders Secrets

The GMOS-North light curve (top panel) and Fourier transform (bottom panel) for the optical companion to PSR J1738+0333. A comparison star is shown in blue, offset by -7%. We mark the 4 sigma and 3 sigma significance level as dashed green and blue lines, respectively. The three significant pulsations are marked with red lines in the bottom panel and the frequency solution is illustrated in the top panel.

Journey 2013 Homepage

Patch to commissioning release for GMOS-S Hamamatsu CCDs

This patch release of the "commissioning" release of the Gemini IRAF data reduction package is being made available to assist in the reduction of the Hamamatsu data, pending the next stable release of the Gemini IRAF package. In addition, this release is to allow users to provide valuable feedback as to the status of the data reduction package for GMOS-S Hamamatsu data. Please provide any feedback, comments or questions etc., via the Gemini HelpDesk system as described in the notes below for the v113_COMM release.

Detector Array

Detector characteristics are given in this section. Note that the GMOS-South detectors have been upgraded in 14B. Note also that the telescope optics are now silver-coated, reducing the system throughput in the blue.