2-D CAD drawing of QUIRC dewar

QUIRC:

Quick Near-Infrared Camera

Description

The QUick InfRared Camera (QUIRC) utilizes a 1024 x 1024 pixel HgCdTe Astronomical Wide Area Infrared Imaging (HAWAII) array produced by Rockwell Science Center. This array is sensitive to radiation from 0.7 to 2.5 microns. The reimaging optics provide a 1:1 scale. Cold filter wheels holds the standard J, H, K, K' filters as well as the H+K filter and other narrowband filters and a polarizer. The camera is used at the University's 2.2-meter and 0.6-meter telescopes and the Canada- France- Hawaii Telescope (CFHT) on Mauna Kea.

What's New


Documentation, technical papers

Papers

The following papers are relevant to QUIRC and the development of the HAWAII 1024x1024 arrays. For papers that include QUIRC data, the Hodapp et al. 1996 paper should be referenced. On-line papers on HAWAII array development and characterization: See also the Rockwell Science Center's web page on HAWAII arrays.

Useful Data

Detector Properties

Images

The following images were taken in February 1996 and are available as FITS format files:

Filters Currently in QUIRC

The filters in QUIRC are changed periodically depending on the observing schedule. A list of the filters currently installed is available as a postscript file. The filters are also listed from within the qcdcom program using the ``filter'' command.

For specifying new filters for QUIRC, the dimensions are: Filter diameter: 1.000in +0 -0.01 (round); Maximum thickness: 0.275 in. A round spacer must be made for each filter with O.D. 1.00 in., I.D. 0.8 in., and a thickness = 0.275 in. - (filter thickness).

Filter transmission data

The following plots are available: The data for each filter is also available. The following are text files that contain two columns: the wavenumber or wavelength and the transmission.

Sensitivity Estimates

Based on observations of 2 standard stars at the UH 2.2m telescope on 2/6/96. The Point SRC (source) and Mag/asec are for 1 minute of integration time, 5 sigma. The point source detection values below assume a PSF of 0.5 arcsec FWHM.

FilterPoint SRC(Mag) Mag/asec Jy/ADU(1sec)
J18.617.9 1.052e-6
H17.817.1 8.295e-7
K16.215.5 9.622e-7
H+K18.617.9


QUIST Information

QUIST Sensitivity Estimates

Based on observations of standard stars using QUIST at the UH 0.6m telescope on 2/9/97. The Point SRC (source) and Mag/asec are for 1 minute of integration time, 5 sigma. The point source detection values below assume a PSF of 2.5 pixels FWHM.

FilterPoint SRC(Mag) Mag/asec Jy/ADU(1sec)
K'14.516.4 7.644e-5
Hs14.716.6 2.291E-4
Hl14.316.2 2.391e-4
2.1212.015.0 4.563E-6
2.2612.715.51.412E-5


Recent QUIRC results


Back to IfA Homepage

Last modified 1997 October 31

Joseph Hora (hora@galileo.ifa.hawaii.edu)