RC CCD Spectrograph

The 4-m Ritchey-Chretien Focus Spectrograph offers a wide range of diffraction gratings, which provide resolutions from 300 to 5000. The CCD currently in use with the RC Spectrograph is a Tektronix 2048 detector with excellent cosmetics. The total system throughput is 11-14%. The spectrograph has a long-slit mode (slit length=5.2) for either two-dimensional spectroscopy of extended sources or for spectroscopy of point sources with excellent sky subtraction. The spectrograph can also be used with multi-slit masks. Details.

CCD Echelle Spectrograph

The 4-m echelle spectrograph is capable of high resolution (<=80,000) over a wide range of wavelengths. Cross dispersion gratings are available to provide spectral coverage from 3000 to 10,000 A. Overall throughput of the spectrograph and UV camera or the long focus cameras is ~1.3% at 3900 A and ~4.7% at 5900 A. Details.

FLAMINGOS IR Imaging Spectrometer

FLAMINGOS is a wide-field IR imager and multi-slit spectrometer. In imaging mode it uses a 2K x 2K HgCdTe (0.316 arcsec/pixel, 10x10 arcmin field of view on the 4 m), with J, H, K, and Ks filters. The spectroscopic mode is provided by cold slit mask placed at the telescope focal plane. Slit masks are mounted in an 11-slot filter wheel and a permanently-mounted long slit. The width of the slit masks is roughly 1/3 of the imaging field (i.e., 3x9.5 arcmin). The highest resolution available is ~3000. This instrument is also available on the 2.1-m. Details

Multi-Aperture Red Spectrometer

MARS is designed to obtain low-to medium-resolution (8-30 Angstroms) spectra of faint objects. Spectra (S/N~8-10 per resolution element) of objects of magnitude R~21 can be obtained in ~45 minutes of integration. The thick LBNL 1980x800 pixel CCD is sensitive over the 3400-10,500A spectral region. The overall system efficiency peaks at ~40%. The system can be operated in long-slit (5 arcmin) or multi-object (with a user-designed slitlet mask) mode. Details

MOSAIC Imager

The NOAO CCD Mosaic is a wide field imager having 8192 x 8192 pixels (8 thinned, AR coated SITe 2k by 4k CCDs). With the 0.26 arcsec pixels on the 4-m, this provides a field of view of 36 arcmin on a side. A total of 26 narrow and wide band filters are available. Details

Simultaneous Quad IR Imager

The NOAO Simultaneous Quad Infrared Imaging Device (SQIID) produces simultaneous images of the same field in the J, H, K, and narrowband L passbands, using individual 512X512 quadrants of ALADDIN InSb arrays with a pixel size of 0.39 arcsec, resulting in a circular field of view of 3 arcmin. This instrument is also available on the 2.1-m. Details

Hydra + Bench spectrograph

Hydra is a fiber positioner on the WIYN 3.5 meter telescope for multi-object spectroscopy of up to 100 objects over a 1 degree field. The Bench Spectrograph has a thinned SITe 2048x2048 CCD, and several gratings (including Echelle) to provide large wavelength coverage or high-resolution spectroscopy at optical wavelengths. Details

DensePak + Bench spectrograph

DensePak is a fiber optic bundle used for integral field spectroscopy at the WIYN Telescope. The bundle forms an array of 91 fibers arranged in a seven fiber by thirteen fiber rectangle. 4 sky fibers are placed are spaced about 60 arcsec from the array center. The fiber diameter is 2.8 arcsec, the field of view is 30 by 45 arcsec. Details. The DensePak fibers feed into the WIYN Bench Spectrograph, which is optimized for fiber optics and can provide low, moderate, and high dispersion spectra.

SparsePak + Bench spectrograph

SparsePak is a fiber optic bundle used for integral field spectroscopy at the WIYN telescope. SparsePak has 82 active fibers, arranged in a sparsely packed grid, with a small, nearly-integral core. Seven 7 sky fibers are spaced away from, but on two of the four sides of the grid. The fiber diameter is 4.7 arcsec, the field of view is 72 by 72 arcsec. Details. The DensePak fibers feed into the WIYN Bench Spectrograph, which is optimized for fiber optics and can provide low, moderate, and high dispersion spectra.

MiniMosaic Imager

The WIYN Mini-Mosaic Imager consists of two SITe 4096x2048 separated by a tiny gap. The CCDs have excellent cosmetics, high quantum efficiency, and allow good sampling (0.14 arcsec/pixel at a median seeing of 0.8 arcsec) and a large field of view (9.6x9.6 arcmin). A range of broad and narrow band filters are available. Details

WIYN tip/tilt module

The WIYN tip-tilt system corrects the upper atmospheric turbulence in real time and can reduce the median seeing of 0.8" to 0.5" at R. The detector is a 2048 x 4096 EEV CCD with fairly good cosmetics. The pixel size is 0.11 arcsec/pixel, the field of view is 3.8 by 4.6 arcmin. Several broad band filters are available. Details

GoldCam CCD Spectrograph

The 2.1-m GoldCam spectrometer offers resolutions from 300 to 4500 using a variety of gratings. GoldCam has a 5.2 arcmin long slit. The detector in GoldCam is a Ford 3K x 1K CCD with 15m pixels and fairly good cosmetics. The total system throughput is 15-18%. It is possible to rotate the slit to specific position angles at the 2.1-m, but his must be done manually with the telescope at zenith. Details

FLAMINGOS IR Imaging Spectrometer

FLAMINGOS is a wide-field IR imager and multi-slit spectrometer. In imaging mode it uses a 2K x 2K HgCdTe (0.606 arcsec/pixel, and therefore not seeing-limited, 20x20 arcmin field of view on the 2.1 m), with J, H, K, and Ks filters. The spectroscopic mode is provided by cold slit mask placed at the telescope focal plane. Slit masks are mounted in an 11-slot filter wheel and a permanently-mounted long slit. The width of the slit masks is roughly 1/3 of the imaging field (i.e., 6x19 arcmin). The highest resolution available is ~3000. Objects north of 70 degrees cannot be observed at the 2.1m. This instrument is also available on the 4-m. Details

Simultaneous Quad IR Imager

The NOAO Simultaneous Quad Infrared Imaging Device (SQIID) produces simultaneous images of the same field in the J, H, K, and narrowband L passbands, using individual 512X512 quadrants of ALADDIN InSb arrays with a pixel size of 0.39 arcsec, resulting in a circular field of view of 3 arcmin. This instrument is also available on the 4-m. Details

CCD Imager

The unvignetted field of view with the Tektronix 2048x2048 CCD is 10.2 x 9.4 arcmin with a pixel size of 0.3 arsec. Several broad and narrow band filters are available. Details