CRIRES-Specific Tools and Tips
This page refers to the upgraded CRIRES which is currently installed at UT3. For the original (pre-upgrade, pre-August 2014) CRIRES please use the following link.
Catalogues of telluric standard stars:
- Hipparcos A1 stars or earlier, suitable for J, H, K, and L bands spectroscopy
- Hipparcos B8 or earlier with V <4.0 or B8 to G0 with V < 4.8, suitable for M-band spectroscopy
- Hipparcos O type stars (from ISAAC)
- Hipparcos B type stars (from ISAAC)
- Hipparcos G type stars (from ISAAC)
Catalogues of spectro-photometric standard stars:
A CRIRES standalone version of MOLECFIT is currently being developed. Please check the MOLECFIT page for updates.
- Calibration tables from NIST. This link provides wave numbers for a number of molecules, useful to calibrate CRIRES spectra either from atmospheric lines. In wave number, CRIRES spectral range is [1850 - 10520]/cm.
- FTS scan of Short Gas Cell (SGC) in the H-band (*.gz, 2.5 MB) and K-band (*.gz, 2 MB)
- FTS scan of N2O Gas Cell in the LM-bands (*.gz, 1 MB)
Will be released in August 2021
Correction of non-linearity in the science detectors
Differential tracking - not offered in P108
Differential tracking allows to close the loop and/or to guide on an object that is moving relative to the target to be observed. Typical examples of the use of such a mode are:
- using a satellite of a planet as an AO guide star to observe a feature on the parent planet;
- using a (angularly small) planet, asteroid or comet to observe a feature moving relative to its optical photo-center;
- using a star as an AO guide star or SVGS to observe a planet, asteroid, comet passing in its vicinity.
Differential tracking is offered in service or visitor mode. However, some complicated programmes (for example observations of Jupiter whilst using one of its Moons to close the loop) are best performed in visitor mode. See Section 19 of the User Manual for details regarding this mode.
ESO compliant ephemerides files can be generated using the following link: http://www.eso.org/sci/observing/phase2/SMSpecial/MovingTargets.html