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Gemini e-Newscast #29 -- March 2, 2011
Quasar feedback measured
F2 OIWFS
The F2 On-Instrument Wavefront Sensor (OIWFS) consists of a 2x2 lenslet array on a moveable arm that patrols an area in front of the mask plane. Signals from the OIWFS are fed to the secondary for fast tip-tilt guiding and to the primary for astigmatism correction.
Observation Preparation
This section mainly describes how to prepare and check FLAMINGOS-2 observations. Setting up observing sequences at Phase II is not intuitive until one is quite experienced (and maybe even not then). Thus, the key to successful observation preparation is starting from the FLAMINGOS-2 OT Library.
PWFS2 (non-siderial targets)
Available for non-siderial targets or when a suitable OIWFS star is not available. There are a few drawbacks with using the P2WFS instead of the OIWFS which are:
- The probe vignettes the F2 FOV.
- The flexure between the probe arm and the detector has not been quantified
Instructions for Visitors
Gemini e-newscast #47
The Gemini e-newscast #47 (May 17, 2013) features:
- A “Shockingly Bright” Gamma-ray Burst
- A Gap in a Pre-Transitional Disk
- FLAMINGOS-2 Commissioning Update
- Welcome New Users’ Committee Members
- AstroDay Hawai‘i
GeminiFocus - The Gemini Observatory Newsletter
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Updated beta version of the Gemini IRAF package released (v1.12beta2)
An updated beta version of the Gemini IRAF package (v1.12beta2) has been released. This version is required for processing GSAOI data and includes configuration files and examples. Please see the pre-releases page for more information.