Michelle Home Page
Michelle is a mid-infrared imager/spectrometer which was built at the ATC in Edinburgh, Scotland. It
uses a SBRC Si:As 320x240-pixel array and operates between 8 and 25
microns. Michelle offers several modes of observing, which include:
- Imaging (67.2 x 50.4 arcsec field of view at 0.21 arcsecs
- Imaging polarimetry
- Spectroscopy (R=200 to 30000, a ~91 arcsec long slit, 0.38
arcsec per pixel)
Michelle contains five gratings offering a wide selection of
resolutions and wavelengths. Any grating can be selected in a couple of
minutes so observers are not limited to one or two gratings per run.
Each can be used with different slits, 1, 2, 3, 4, and 8-pixels (0".38,
0".76 etc) wide, all of which are approximately 91 arcseconds long.
Resolving powers range from 200 to 30,000.
Eleven filters are available, both broad and narrow band, and cover the
wavelength range from 8 to 25 microns. Available filters, including
passbands, can be found in the
Michelle planning applet.
Latest news (7-May-2004)
After a short semester 04A, Michelle was transferred to Gemini on April
29th. This transfer marks the beginning of a long-term loan and the
instrument is therefore no longer available at UKIRT.