Palomar 200-inch Telescope:

Cassegrain IR Camera

Status: Semi-Private Instrument (Matthews)

Array: 256 × 256 HgCdTe (NICMOS)
Read noise:
- 35 e^-/pixel (single non-destructive reads)
- 12 e^-/pixel (multiple non-destructive reads)
Pixel size: 0.165 arcsec @ f/70

Band	(µ)	(µ)	Integrated Counts 0 mag star (e^-/sec)	Sky Counts per Pixel (e^-/sec)	System Trans
J H K	1.25 1.65 2.20	0.25 0.32 0.40	1.57 × 10¹⁰ 1.44 × 10¹⁰ 1.16 × 10¹⁰	210 800 1600¹	20% 29% 39%

¹Winter conditions; ~2× greater in summer.

Contact Tom Soifer or Keith Matthews for use of these filters.

Filter
CVF HeI Cont [FeII] Cont Pa- Cont Cont [FeII]	1.8µ - 2.6µ 1.084µ 1.229µ 1.255µ 1.268µ 1.282µ 1.313µ 1.569µ 1.644µ	1.3% 0.0096µ 0.0108µ 0.0114µ 0.0116µ 0.0114µ 0.0128µ 0.0400µ 0.0156µ

Band	t(½) ^§ (sec)	1 mag/" in t(½) ^*	1 mag/" in 1 hr^*
J H K (winter) K (summer)	740 190 95 45	24.2 22.7 21.7 20.9	25.1 24.3 23.7 23.3

^§ t(½) = integration time to fill the detector wells to 50% capacity.
^* On-source integration time.

Band	(µ)	(µ)	Integrated Counts 0 mag star (e^-/sec)	Sky Counts per Pixel (e^-/sec)	System Trans
J H K K_s	1.25 1.65 2.20 2.15	0.25 0.32 0.40 0.30

Filter
CVF CVF	1.8µ - 2.6µ 2.6µ - 5.3µ	1.3% 1.0%

Contact: Jeff Hickey
Last modified: Jan 30, 2008