2021B schedule, run summaries, and programs

List of 2021B QSO programs for MegaCam, WIRCam, ESPaDOnS, SITELLE, and SPIRou.

QrunID Instrument HST Dates # Nights Run Summary
21BQ01 WIRCam Aug 01-02 2 The first two nights of 2021B were photometric.
21BQ02 MegaCam Aug 3-11 9 The first 5 nights of the run were photometric. High humidity and clouds affected parts of the last 4 nights.
21BQ03 SPIRou Aug 12-25 14 The weather was very good, with half of the nights photometric, and the rest affected some of the time by fog or clouds.
21BQ04 ESPaDOnS Aug 26 - Sep 1 7 Very little time was lost too bad weather, thin cirrus were present at some point on most nights. One hour was lost to a power glitch in Waimea.
21BQ05 MegaCam Sep 2-12 11 The skies were photometric on 8 of the 11 nights. The last 8h of Sep 7/8 were lost when the telescope tripped a limit switch and could not be brought out of its locked condition remotely.
Engineering f8 alignment Sep 13 1 The f8 mirror was recoated in early Sepember and aligned on the sky on Sep 13
21BQ06 SPIRou Sep 14-23 10 Most nights were affected by clouds, fog, or rain. Only one night was completely lost, and only 3h were unusable due to weather conditions. A little over 4h were lost to a power glitch at the summit facility.
21BQ07 WIRCam Sep 24-28 5 One full night and an additional 90min were lost to weather.
21BQ08 SITELLE Sep 29 - Oct 5 7 Only 2 nights were photometric. Cirrus, thicker clouds, and high humidity affected the other 5 nights, with the equivalent of a couple of nights (12 h) lost to weather.
21BQ09 WIRCam Oct 6 1 This single-night run was photometric in the second half of the night.
21BQ10 MegaCam Oct 7-12 6 Power glitches and outages caused the loss of 3h of observing time, and 26h were lost to weather, mostly during the last 2 nights of the run.
21BQ11 SPIRou Oct 13-27 15 A little over 12h were lost to weather, on 5 separate nights.
21BQ12 MegaCam Oct 28 - Nov 2 6 While thin cirrus were present during the first 2 nights of the run, fewer than 2h were lost to thick clouds, and the last 3 nights were photometric.
21BQ13 SITELLE Nov 3-11 9 Fewer than 3h were completely lost to weather, but only 4 nights were completely photometric. Thin cirrus or clouds affected 5 of the nights.
21BQ14 SPIRou Nov 12-21 10 This was a very poor run, with only one completely photometric night, and all other nights affected by fog or clouds. The equivalent of about 8 nights (58h) were lost to weather.
21BQ15 ESPaDOnS Nov 22-29 8 The run was productive, with only one full night lost to winter weather, and half a dozen additional hours lost to fog and high humidity in the second half of the run. The first test of the kealahou system were performed on Nov 24.
21BQ16 MegaCam Nov 30 - Dec 6 7 The whole run was lost to weather. No data were taken.
21BQ17 SPIRou Dec 7-21 15 Winter conditions have affected the whole run, with clouds, fog, snow, and freezing temperatures. The equivalent of about 9 nights, or 65h, were lost to weather.
21BQ18 ESPaDOnS Dec 22-27 6 The exchange to ESPaDOnS was delayed by a day because of bad weather. Due to snow and ice accumulation on the dome and shutter, we were only able to open on Dec 25. Only one night was fully usable, and a handful of additional hours were obtained on 2 separate nights.
21BQ19 MegaCam Dec 28 - Jan 4 8 Most of the run was lost to winter conditions. The last night was photometric and productive; an additional 3h of observations were taken on an earlier night.
21BQ20 SPIRou Jan 5-31 27 Very little time was lost to weather during this extra-long run (28h). The completion rate for the SLS is outstanding. The completion rate of A-ranked and B-ranked PI programs is excellent (80%).