Tools and Tips
Publications based on data obtained with the VISIR instrument should quote the following reference paper: Lagage, P.O. et al. 2004, The Messenger 117, 12.
A description of the VISIR upgrade can be found in Käufl, H.U, et al., 2015, The Messenger 159, 15.
- This tool (GuideCam) is used to select the guide star and prepare the finding charts in the proper format.
The most commonly used calibration sources in the mid-infrared are the ones characterised by Cohen et al. in a series of papers starting in 1992: "Spectral Irradiance Calibration in the Infrared". A summary of these papers including a spectro-photometric catalogue of 422 stars scattered over the entire sky can be found on their Paper X (Cohen et al. 1999, AJ 117, 1864). This catalogue is included in the VISIR pipeline and the basis of the sensitivity determination for VISIR. Nevertheless these templates should be used with caution, because many of them have not been verified observationally.
- Flux catalog of 425 Mid-Infrared Standard Stars for VISIR imager filters based on Cohen et al. (ASCII, binary fitstable)
- Selected list of 81 Standard Stars from Cohen et al. (ASCII)
- Selected list of 12 Standard Stars from Cohen et al. (ASCII)
- Flux catalog of 44 A0 stars for VISIR imager filters (ASCII)
- List of (23 bright) MIR (TIMMI2) calibration standard stars
- On the selection of the short list of Standard star
- HITRAN atmospheric transmission profiles for Paranal (2500m, 1mm H2O). Files contain wavelength and transmission for zenith (0deg), 30deg and 60deg (by courtesy of B. Schulz)
Generic Tools and information
- ETC, Exposure Time Calculators
- Proposal Preparation and Submission
- Magnitude/Flux/Jansky simulator (NICMOS tool, very good!)
- Molecfit - a software tool to correct astronomical observations for atmospheric absorption features, based on fitting synthetic transmission spectra to the astronomical data
- Other ground-based Mid-Infrared Instruments and Projects:
|Canari Cam||CanariCAM : Mid IR imager, spectroscopic, polarimetric, coronographic options at 10m GTC.|
|KECK-Observatory||LWS: Long wavelength spectrometer.
LWIRC: Long wavelength infrared camera.
|Subaru||COMICS: Cooled mid infrared camera and spectrograph.|
|GEMINI-North||Michelle: Mid IR echelle spectrograph and imager.|
|GEMINI-South:||OSCIR (mid IR imager/spectrometer, already in use at 4m CTIO telescope)
T-RECS (Mid IR Imager/Spectrometer for Gemini South)
|TIMMI2||TIMMI2 : Mid IR imager with spectroscopic and polarimetric options at the ESO 3.6m.|