GrIm - Quick Information and Specifications
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This page last updated: June 28, 2006 - JMD
This page last checked: October 26, 2004 - JMD
Information in Yellow may not be correct or is missing for this instrument!!!
Brief Instrument Description
GrIm II Quick Information
GrIm II was been decommised April 21, 2005.
GrIm II will NO longer available for use.
- CCD is a NICMOS 3 HgCdTe Focal Plane Array (FPS) 256x256 CCD
- CCD pixel size = 40µm
- CCD gain = 4.73 e-/ADU ±0.2 (K.Gloria measured in 1994: 4.56 e- / ADU (see plot here)
- CCD read noise = 110 e- / pixel ±20
- Quantum Effeciency ~70%
- Dark Current: <1 e- / second
- Pixel scale = 0.48"/pixel @ f/5 (120 arcsec FOV), 0.24"/pixel @ f/10 (60 arcsec FOV), 0.11"/pixel @ f/20 (30 arcsec FOV) all binned 1x1
- Full well depth: 150k e-
- Linear up to 28k, Saturation at 32K
- Installed filters (User selectable): J(1.25u), H(1.65u), K(2.20), Steam(1.99) ,H2(2.122), Br(2.166), CO Cont(2.22), CO Band(2.36), He I(1.0829, Pa(1.0930), O II(1.236), Pa(1.2823), [FE II](1.6471), H2(2.2485), CO(2.2973), Mauna Kea K(2.1235), Short K(2.155), Continuum K(2.2597), K dark(2.27-2.43), Narrow Cont(1.580), Methane(1.700)
- Grating resolution:
- Spectral Coverage: Sensitive from 1µm - 2.5 µm
- Field of View: f/5 120", f/10 60", f/20 30"
- See a plot of the chip linearity
- Minimun exposure: 1.21 seconds
Information in Yellow is NOT correct for this instrument!!!
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