TripleSpec User's Guide

version 0.3b - 10SEP2008

Draft in progress - suitable for shared-risk observation planning
Please send suggestions/corrections to mfs4n --at--

Table of Contents

0.1. Revision History

0.2. Updates

1. Introduction

2. Usage Overview: What to expect 3. Sensitivity and Performance

4. Practical Observing Guide 5. Observing with TUI
The TripleSpec TUI guider window. Functions/controls are similar to guiders for DIS/Echelle. Remote users will want to have 2x2 binning activated to minimize download time and to clean up odd-even column striping. The platescale of the array is fine enough that there is little penalty in resolution for running in the binned mode. Sub-framing is available to improve response time for remote observing. The detailed operation of this window is described in Section 5.1. Main TripleSpec instrument TUI window showing configuration. In this window the number of Fowler samples can be set and the slit can be rotated to the desired position. Tip-Tilt mode refers to a future mode of the instrument where the spectrum can be steered at the sub-pixel level by a piezo-electric stage under one of the fold mirrors in the system. Note that the array power button should be left alone. It will likely be removed in future versions of the GUI. Users should find the system fully powered up and ready for operation after starting TUI. The "environment" button provides instrument internal temperatures and pressure. TSpec Exposure window: Integration times are set and exposures initiated in this window. The "type" radio buttons simply set a FITS keyword for the recorded data. The system can take multiple exposures, ``#Exp" at the push of one button. This function is particularly useful for bright standards where a set of 5 exposures can be taken consecutively at the "A" slit position followed by 5 exposures at the "B" position to complete the observation. ``Filename" is the root file extension. For example, if "xxx" is chosen for the file name the resulting fits file will be "xxx.yyyy.fits" where "yyyy" is an incrementing frame number that increases steadily through the night. Nod Script window: Obtained from the "Scripts" pull-down menu, this window has all of the functionality of the Expose window, but also includes a "cycles" option which currently drives the telescope in an "ABBA" slit position seqeuence for each cycle requested. At each "A" or "B" position "#Exp" exposures will be taken. For example, Cycles=2 with #Exp=4 will yield 32 frames - an ABBAABBA sequence with 4 exposures at each position.

6. Calibration

7. Data reduction - Triplespectool