User's Guide to the Gemini Twin-Arrays Infrared Camera


Table of Contents


Introduction
Quick Reference
What is Gemini?
Summary Table
Quick start - for the expert
Not so quick start - set-up
Graphical User Interface
More About Gemini
Signal-to-Noise Estimates
Filters
Sampling Modes
Writing Scripts
Observing Recipes
Computer Setup
Testing the Arrays
Instrument Maintenance and Trouble-Shooting
Logsheet

Mt. Hamilton Homepage

Filters

Properties of Gemini Filters
FilterCentral Wavelength
(microns)
Width
(delta lambda/lambda)
Background
(DN/sec)
Time to BLIP
(sec)
J1.2523%603
H1.6518%300 0.6
K'2.123516%400 0.45
K-short2.1615%~400 <0.5
K2.214518%~600 <0.5
Paschen Beta1.28041.0%13 11
1.30951.30950.99%10 18
FeII1.6471.07%15 10
HeI2.06151.0%28 7
HeI continuum2.0871.25%33 6
H2(1-0)2.1251.1%25 8
Br-gamma2.1651.03%39 5
K continuum2.262.65%33* 6
CO2.2960.99%17* 10
Ice3.08253.27%5000* 0.03
HeII3.08651.0%5000 0.03
HeII continuum3.1441.25% 52000.03
Dust3.3092.2%TBD ---
Dust continuum3.4132.15% TBD---
nbL3.5972.1%50000* ---
4 micron continuum3.99231.2% >50000---
Br-alpha4.04551.3% >50000---
*: these backgrounds are estimates based on filter width and transmission.

Narrow Band Filter Zeropoints
DateFilterZeropoint
6/21/95Kcont18.15
6/21/95H217.04
6/21/95FeII18.10
Based on HD129653 with airmass ~ 1.4


Last modified: Mon Apr 21 04:05:55 PDT 2008 by Elinor Gates