As of UT 00:30 both the temperature and humidity of the FCM increased over an ~30 minute period. The humidity increased to above 6% before eventually setteling down to just below 5%, where it remained for the majority of the night. There were a large number of "warnings" reported. At approximately UT 00:50 we closed the louvers, which didn't seem to have any immediate effect.
Somewhat expected, as we moved to the bulge field several exposures ran into guiding errors. This is despite switching to 100 ms guider exposures.
| Total Times | Time Observed | Time Engineering | Time lost technical | Time lost weather | Time lost other | Total Program Time |
|---|---|---|---|---|---|---|
| 2018-02-15 | 10.0 | 0.0 | 0.0 | 0.0 | 0.0 | 10 |
Links
[1] mailto:willdawson@llnl.gov
[2] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/4610/delete?destination=print/content/enr-ctio-blanco-4-m-2018-02-15
[3] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/4610/edit?destination=print/content/enr-ctio-blanco-4-m-2018-02-15
[4] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/add/node/13381?destination=print/content/enr-ctio-blanco-4-m-2018-02-15
It wasn't obvious from any of the material regarding the Blanco that we could not target fields when the |Hour Angle| > 5.5 (e.g. it is not mentioned on the Horizon Limts web page, and I do not recall reading it in the NOAO Data Handbook). Kathy noted this limitation during our first field observations when she noticed that it might be a problem but this left of scrambling and we failed to observe a couple tiles of our survey. Had we known about the limitation before hand we could have adjusted the ordering of our tiles and gotten all the observations. It is not a big loss thanks to Kathy but it could have been avoided.