The SPIRou Legacy Survey: wiki site

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====== SPIRou scheduling at CFHT ====== 

On this page we log the amount of SPIRou time allocated by the TACs (SLS/SPICE and A&B-rated PI programmes) and scheduled on the telescope since the beginning of semester 2019a, comparing both to those of the other CFHT instruments (all numbers taken from [[http://www.cfht.hawaii.edu/en/science/QSO/|CFHT QSO pages]]).  We quantify the **overall time pressure** on each instrument by computing the **difference between the allocated and scheduled amounts** since 2019a.  (We recall that 1 night of telescope time amounts to 7 hr for SPIRou, 5.5 hr for MegaCam (5 hr from 2022b), 7.5 hr for ESPaDOnS, 5 hr for WIRCAM and 6.5 hr for SITELLE).  

Following the various technical operations (aluminizing, engineering), issues (crane, hydraulics, mirror support) and shutdowns (TMT protests, COVID-19) that CFHT underwent since 2019a (generating an overall loss of 126 nights), only MegaCam was scheduled enough time on the telescope to carry out the allocated programmes.  **SPIRou largely suffered from these issues**, with a cumulated scheduled time larger by 15.7 nights than the allocated time, whereas the other main CFHT instrument MegaCam was scheduled 31.5 more nights than allocated, i.e. **15.8 more nights than SPIRou on the same time span**.  (We recall that in average, CFHT is meant to schedule time for each instrument in proportion to the allocated time).  

===== Overall pressure = allocated time - scheduled time (higher numbers meaning stronger pressure, in nights) =====

^Semester^SPIRou^MegaCam^ESPaDOnS^WIRCAM^SITELLE^ 
| 2019a |1.87|13.87|0.42|3.39|-10.00| 
| 2019b |20.41|-3.05|1.75|8.90|5.29|
| 2020a |0.00|7.01|2.34|11.47|7.39| 
| 2020b |-3.58|-14.63|2.68|3.09|-0.24|
| 2021a |-7.19|-14.02|-0.45|2.40|-0.18|
| 2021b |-6.91|-4.44|-1.03|0.00|-1.54|
| 2022a |0.31|-0.31|-1.02|0.08|-2.56|
| 2022b |6.17|-20.40|-10.53|-1.76|-0.85|
| 2023a |-20.48|9.66|-2.60|-0.29|-0.83|
| 2023b |-6.27|-5.23|-0.05|-1.64|-1.07|
| **total** |**-15.66**|-31.54|-7.16|24.35|-4.58|

===== Allocated time by TACs & DDT (LPs and A&B-rated PI programmes, in nights) =====

^Semester^SPIRou (SLS/SPICE)^MegaCam^ESPaDOnS^WIRCAM^SITELLE^ 
| 2019a |45.87 (32)|70.87|14.42|24.39|10.00|
| 2019b |75.41 (56)|45.95|14.75|19.90|11.29|
| 2020a |63.50 (39)|65.01|7.34|17.47|13.39|
| 2020b |68.92 (54.43)|32.37|22.02|18.80|21.76|
| 2021a |54.81 (33.57)|69.98|12.55|15.40|8.82|
| 2021b |84.09 (57)|40.56|19.97|8.00|16.46|
| 2022a |48.31 (38)|67.69 |19.98|12.08|19.44|
| 2022b |57.17 (30.70)|54.60 |21.47|9.24|13.15|
| 2023a |55.52 (42.01)|76.66 |19.40|8.71|6.17|
| 2023b |86.73 (59.53)|43.77 |13.95|11.36|13.93|
| **total** |**640.34 (442.24)**|567.46|165.84|145.35|134.42|

===== Scheduled time on CFHT & time lost to technical issues, engineering & shutdowns (in nights) =====

^Semester^SPIRou^MegaCam^ESPaDOnS^WIRCAM^SITELLE^lost / eng^
| 2019a |44|57|14|21|20|25|
| 2019b |55|49|13|11|6|50|
| 2020a |63.5|58|5|6|6|43.5|
| 2020b |72.5|47|18|17|22|7.5|
| 2021a |62|84|13|13|9|0|
| 2021b |91|45|21|8|18|1|
| 2022a |48|68|21|12|22|10|
| 2022b |51|75|32|11|14|1|
| 2023a |76|67|22|9|7|0|
| 2023b |93|49|14|13|15|0|
| **total** |**656**|599|173|121|139|138|
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