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

Quasar feedback measured

GSA Search and Download Instructions

This page describes how to search and download the baseline calibrations from the GSA. This includes: 

Baseline Calibrations

For all queue observations, a set of standard calibrations (the "baseline calibrations") will be taken by Gemini Staff to ensure the long-term utility of data in the archive. The baseline calibration set varies from instrument to instrument and from mode to mode. The table below describes the GSAOI baseline calibrations, as well as provides information on how and when to request additional frames.

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
More information on the P2WFS can be found at Peripheral Wavefront Sensor (PWFS2)

Instructions for Visitors

Gemini South

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

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