CRIRES User Manual
Doc. Number: ESO-254264
Doc. Version: P109.4
Issued on:
2021-12-01
Page:
8 of 99
Document Classification: ESO Internal Use [Confidential for Non-ESO Staff]
2. Overview
2.1 CRIRES in a nutshell
Figure 1: Optical layout of CRIRES
A basic summary of the new and main instrument parameters is given below:
Min. spectral resolving power
40,000 and 80,000
1
Wavelength coverage
0.95 - 5.3 μm (YJHKLM bands)
RV precision
20 m/s by using the Short Gas Cell (SGC)
Slit width
0.2 and 0.4 arcseconds
Slit length
10 arcseconds
Polarimetry
linear + circular (YJHK bands)
Adaptive optics
60 actuator curvature sensing (MACAO)
Cross-disperser
6 gratings (YJHKLM)
1
See 4.6.6 for more details on ongoing analysis
