SPIRou Phase 2 Tutorial
Last update: July 2019.
Astronomers who were allocated SPIRou time will have to enter the parameters of their observations in the new CFHT Phase 2 system, Kealahou (Hawaiian for "the new way"). This page gives a tutorial to enter this information. To move from one field to the next, use the "Tab" key, or click on the desired field.
Enter the Kealahou system
Login Use your username and change your password; if you had a Phase 2 login in the old CFHT system, use the same user/pwd. If you had no previous account and got time, you will be contacted to set up your password.
Your Program Use your program ID (one per allocated proposal) to put your data at the right place
Contact Write an email to QSOteam if you are stuck
Summary Page Check your program data: Title and abstract, your contact email, your TAC rank, the allocated and requested total time (hours). You can enter any general comment in the last line: any critical observing conditions or scheduling constraints or relative calibrations... Save your comment after editing.
Target name Please use standard names (as in CDS). Names are limited to 68 characters. You don't have to set a label, it is set by the system automatically. You can press the crosshair icon to lookup properties from CDS.
Finding chart You will be able to add a finding chart after creating your target. Please add a finding chart for each of your targets. The button will create a chart automatically, based on the coordinates entered. Please do not zoom in or out, and keep the scale used. Place the crosshair over your target if it differs from the calculated position. You may also edit the comment that is automatically generated and you may also upload a chart prepared separately, as long as the FOV is about 4 arcmin, the image is in H band, the file is a JPG and a crosshair clearly indicates your target.
Magnitude & Temperature Provide the estimated/measured magnitude in the H band and the estimated effective temperature. This is to double check S/N calculations. Provide a comment in the Summary if your stars are highly variable and/or this information is not reliable.
Position & Proper Motion Equinox 2000.0 is assumed; corrdinate format is expected in the form hh:mm:ss.s and dd:mm:ss.s. Provide a proper motion if it is greater than 50 mas/y.
RV Radial velocity of the star in km/s. This may be useful to confirm the identification of the star.
RV precision By activating radial velocity precision you will impose accuracy restrictions on guiding. Only check and fill in this box if your science use case requires it: when checked enter the desired radial velocity precision in m/s.
Standard star? This flag must be set when the star is a "standard" star, for instance to be observed multiple times, each time other science targets are observed. Provide your standard-star observing pattern in the comment section of the summary page.
Observing Template
OT name Spaces and special characters are possible but not recommended. Names are limited to 68 characters. You don't have to set a label, it is set by the system automatically.
Observing Mode Choose between Spectroscopy ("Star") and "Polarimetry". Choosing Polarimetry will automatically set 4 sub-exposures each of the requested exposure time
Reference Choose between "Dark" and "Fabry-Perot". Use Fabry-Perot for high-precision radial velocity. Use Dark if your star is fainter than H~11.
Stokes Select "I" if you are using the Star mode. Select your Stokes parameter for Polarimetry. This will set the correct sequence of configurations.
Sky observation A sky observation of 10 min is taken at the beginning of every night for calibration purposes. Telluric corrections are available in the reduced spectra using regularly observed telluric stars and a PCA approach to match your observing conditions. So it is generally not useful to take a sky before or after your targets. Leave this field to "None" if you don't need sky background observations taken spatially and temporally close to your observation. If you do need it (faint stars, critical K-band observations), select when you want the sky observed: "Before" the target, "After", or "Before and After".
Desired SNR This is the SNR per 2.28 km/s pixel at 1.7 micron. For polarimetric sequences it is the SNR per sub-exposure (enter 50 if you want to reach 100 after 4 sub-exposures). This SNR goal is important as the observer uses it to grade and validate your observation. The observations will be validated if the measured SNR is greater than 60% of the goal.
Exposure time This is the requested exposure time in seconds of a single exposure or sub-exposure in Polarimetry mode. In SNR mode, this is the maximum exposure time. Please note that the observatory charges 30 sec for overheads of each exposure, so take this into account when comparing to your allocated time.
Tracking At this time, we only offer two modes of tracking: the standard sidereal mode that compensates for the Earth rotation and the non-sidereal mode to follow moving targets such as Solar System objects.
Number of sequences (consecutive observations in a night) Enter 1 if you are not monitoring an event during a given night, like a transit observation. This is not the number of iterations on your target during a run or a semester that you will find under the monitor type in the observing group. In polarimetric mode a sequence is composed of 4 sub-exposures and you have to enter the number of sequences, not the number of sub-exposures. In Star mode, sequence and exposure are the same, so enter the number of exposures.
Use SNR Check this flag if you want your program to be observed at a fixed SNR. This will trigger the exposure to stop when the SNR goal is achieved, or at the maximum exposure time, whatever comes first.
Max Image Quality Enter here the maximum seeing that can be used for your observation in arcsec. Median image quality is 0.65".
Max Airmass Enter here the maximum airmass where your observation must be conducted. It is not recommended to observe beyond 2.0.
Max Extinction Enter here the maximum extinction in the H band that your observation can handle (in magnitudes).
Max H2O vapor This is the maximum H2O column density in mm. The median is 2.5mm for Maunakea. This parameter is being evaluated at the moment.
Observing Group
Priority Indicate your science priority: High, Medium, or Low. It helps the observing team optimizing your program.
Type Select the type of observation. Your choices are: Standard (NONE), Monitor (MONITORING), Time Window (SCHED). Values in parentheses are the ones to be used if you provide a csv file. Each option will lead you to a specific menu where the parameters are different. In "Standard", you only have to link a Target and an Observing Template. In "Monitor", you have to specify the number of iterations (ideal/minimum), the interval between visits and its tolerance. Select "Require same camera run" if you want the monitoring to stop after a run, whether the number of iterations is obtained or not. Finally, in the option "Time window", you have to give the range of starting time in UTC. This range can be minutes (as for a transit sequence) or days (as in "one visit during the February run"). Note that the second time is the time after which the observer drops the idea of starting the OG, not the time when it finishes. There can be several time windows for an observation.
Link a target and template(s) By selecting a target from your list, and an observing template, or several of each, you build up a continuous sequence. An OG can contain several targets and several templates per target, if required by the observing strategy. However, keeping it simple and short is the preferred way, as it will insure flexibility and completeness.
Additional features
Editing Automatic completion, search filters