Scheduler-oriented night summary of lsstcam on 2026-06-29¶
This report is a summary of a night of observing designed to understand scheduler behavior during the night, identify scheduler problems, and otherwise monitor scheduler performance.
All data used for this page comes from "quick look" processing, not the full science processing.
Sunset: 21:48:42Z, evening 12°: 22:49:20Z, morning 12°: 10:43:51Z, Sunrise: 11:44:27Z
| MJD(UTC) | LST | UTC | Chile/Continental | |
|---|---|---|---|---|
| event | ||||
| sunset | 61220.908827 | 174.418257 | 2026-06-29 21:48:42.679701+00:00 | 2026-06-29 17:48:42.679701-04:00 |
| sun_n12_setting | 61220.950935 | 189.618571 | 2026-06-29 22:49:20.793865+00:00 | 2026-06-29 18:49:20.793865-04:00 |
| sun_n18_setting | 61220.971276 | 196.961449 | 2026-06-29 23:18:38.272483+00:00 | 2026-06-29 19:18:38.272483-04:00 |
| sun_n18_rising | 61221.426790 | 1.395272 | 2026-06-30 10:14:34.631533+00:00 | 2026-06-30 06:14:34.631533-04:00 |
| sun_n12_rising | 61221.447123 | 8.735123 | 2026-06-30 10:43:51.385835+00:00 | 2026-06-30 06:43:51.385835-04:00 |
| sunrise | 61221.489210 | 23.928003 | 2026-06-30 11:44:27.720647+00:00 | 2026-06-30 07:44:27.720647-04:00 |
| moonrise | 61221.940393 | 186.798752 | 2026-06-30 22:34:09.966578+00:00 | 2026-06-30 18:34:09.966578-04:00 |
| moonset | 61221.510482 | 31.606843 | 2026-06-30 12:15:05.610135+00:00 | 2026-06-30 08:15:05.610135-04:00 |
| night_middle | 61221.199019 | 279.173130 | 2026-06-30 04:46:35.200174+00:00 | 2026-06-30 00:46:35.200174-04:00 |
Sun α=99.0°, δ=23.0° Moon α=282.0°, δ=-27.0°
| RA | dec | alt | az | phase | |
|---|---|---|---|---|---|
| sun | 98.781361 | 23.190239 | -82.525258 | 171.191711 | NaN |
| moon | 281.558065 | -26.899450 | 86.028419 | 8.491404 | 97.510355 |
Number of exposures: 885, Mean gap time: 20.40 seconds, Median gap time: 15.76 seconds
| Open shutter of first exposure | -9.82 minutes after 12 degree evening twilight |
|---|---|
| Close shutter of last exposure | -0.52 minutes before 12 degree morning twilight |
| Total wall clock time | 12.08 hours |
| Number of exposures | 885 |
| Total open shutter time | 7.07 hours |
| Mean gap time | 20.40 seconds |
| Median gap time | 15.76 seconds |
Number of survey visits in night: 875, DDFs Observed: ELAISS1, ToOs Observed: -
| Time between 12 degree evening and morning twilights | 11.91 hours |
|---|---|
| Number of survey visits in night | 875 |
| Number of pairs started | 363 |
| Number of pairs finished | 312 |
| DDFs Observed | ELAISS1 |
| ToOs Observed | - |
Visit map¶
Map key and instructions
The above plots show the visits collected during the night in two different representations, modeled after physical observing tools.
- The map on the left shows the sphere in orthographic projection, with the center point of the projection controlled by the sliders beneath the plot. A static orthogrophic projection is not an equal-area projection, but playing with the sliders is a helpful way to inform a human's spatial reasoning in three dimensions. Use of this map resembles use of an armillary sphere.
- The map on the right shows the sky in Lambert Azimuthal Equal Area Projection, centered at the south celestial pole, with R.A. increasing counterclockwise (because Rubin Observatory is in the southern hemisphere). The projection used is equal area, but highly distorted near the north celestial pole (outside the LSST footprint). This is a particularly helpful representation for planning observing, because changes in time in relevant features are simple rotations, without alterations in distortion, and there are no discontinuities anywhere in the footprint at any time of year. Use of this map resembles use of a planisphere.
Both plots show the footprints of camera pointing taken up to the time set by the "Date and Time" slider, with the most recent three pointings outlined in cyan. The fill colors are:
- Â Â Â u band
- Â Â Â g band
- Â Â Â r band
- Â Â Â i band
- Â Â Â z band
- Â Â Â y band
Both plots have the following additional annotations:
- The gray lines outline regions in the LSST survey.
- The orange disk shows the coordinates of the moon.
- The yellow disk shows the coordinates of the sun.
- The green line (oval) shows the ecliptic.
- The sun moves along the ecliptic in the direction of increasing R.A. (counter-clockwise in the planisphere figure) such that it makes a full revolution in one year.
- The moon moves roughly (within 5.14°) along the ecliptic in the direction of increasing R.A. (counter-clockwise in the planisphere figure), completing a full revolution in one sidereal month (a bit over 27 days), about 14° per day.
- The blue line (oval) shows the plane of the Milky Way.
- The black line shows the horizon at the time set by the MJD slider.
- The red line shows a zenith distince of 70& deg; (airmass=2.9) at the time set by the MJD slider.