Summary Table
| Image scale: | 0.68" per pixel |
| Field of View: | 174" x 174" |
| Features: | Twin IR arrays + dichroic beam-splitters Channel A: Short Wave - NICMOS3 256x256 pixels HgCdTe Channel B: Long Wave - SBRC 256x256 pixels InSb |
| Dichroics: | K band to SW channel K band to LW channel |
| Options: TELCO control for mosaics using SCRIPTS External Polarimeter: In/Out, Rotatable Halfwave Plate (22.5 degree steps) Aperture Wheel: Open, 5" Occulting Spot, 120" Long Slit, Short Double Slits Auxiliary Aperture Wheel: Open, Polarizer, Calcite Cube Filter Wheels: 10 positions | |
| Channel A (SW) | Channel B (LW) |
| Blank (dark) | Blank (dark) |
| H grism | K grism |
| Paschen Beta | H2 |
| 1.3095 | Brackett Gamma |
| He I | K continuum |
| He continuum | CO |
| J grism | He II |
| J | 3.15 continuum |
| H | L |
| K | K' [NB: Filters last changed 11 Mar 1999.] |
| Modes: | Imaging, Spectroscopy (R=500), Polarimetry |
| Throughput: | about 30% (less at J band) |
| Noise: | 1 - 3 DN depending on readout mode (CDS, Fowler, Multiple Converts) |
| Gain: | Channel A: 19 electrons/DN Channel B: 24 electrons/DN |
| Backgrounds: | J = 16.0 mag per square arcsec H = 14.0 mag per square arcsec K = 13.0 mag per square arcsec |
| Zeropoints (1 DN/s): | J = 21.4 H = 20.9 K = 20.4 |
Last modified: Tue Jun 17 22:51:14 PDT 2008 by Elinor Gates