Open Access
Table B.1.
Details of the cadence simulations from the rubin_sim
| ID | run | brief | family | description |
|---|---|---|---|---|
| S1-MS | baseline_v2.0_10yrs | v2.0 baseline | baseline | The v2 baseline simulations. V2.0 and V2.1 feature a survey footprint with expanded dust-free area and WFD-level visits in the Galactic Bulge and Magellanic Clouds. Coverage of the Northern Ecliptic Spur, South Celestial Pole, and remainder of the Galactic Plane is maintained, at lower levels. Filter balance is modified in different areas of the sky. A 2-region rolling cadence is used in the dust-free WFD sky, to improve cadence. The v2.1 simulation adds coverage in the Virgo cluster and acquisition of good seeing images in r & i bands. The retro simulations are intended to provide a bridge from v1.X to v2.X, introducing modifications to the footprint and scheduler code separately and in stages. |
| S2-MS | baseline_v2.1_10yrs | v2.1 baseline (+Virgo, good seeing) | -”- | -”- |
| S3-MS | baseline_v2.2_10yrs | v2.2 baseline (prescheduled DDFs) | -”- | -”- |
| S4-MS | draft_connected_v2.99_10yrs | DDF at 7.5%, twilight NEO microsurvey, priority GP footprint. | draft v3 | Draft versions of simulations incorporating the SCOC Phase 2 recommendations for survey strategy. |
| S5-MS | draft_v2.99_10yrs | Less connected, agg_level 1.5, galactic plane footprint. Otherwise like draft_connected. | -”- | -”- |
| S6-MS | light_roll_v2.99_10yrs | Draft_connected footprint but full strength near-sun twilight microsurvey. Rolling flipped, roll strength 0.5, higher suppress revisits weight, more g in SCP/GP. | -”- | -”- |
| S7-MS | retro_baseline_v2.0_10yrs | v1.x baseline with rubin_sim (without new code capabilities) | baseline | The v2 baseline simulations. V2.0 and V2.1 feature a survey footprint with expanded dust-free area and WFD-level visits in the Galactic Bulge and Magellanic Clouds. Coverage of the Northern Ecliptic Spur, South Celestial Pole, and remainder of the Galactic Plane is maintained, at lower levels. Filter balance is modified in different areas of the sky. A 2-region rolling cadence is used in the dust-free WFD sky, to improve cadence. The v2.1 simulation adds coverage in the Virgo cluster and acquisition of good seeing images in r & i bands. The retro simulations are intended to provide a bridge from v1.X to v2.X, introducing modifications to the footprint and scheduler code separately and in stages. |
| S8-MS | roll_early_v2.99_10yrs | Starting rolling early and increase suppress revisit weight. DDF at 7.5%, twilight NEO microsurvey, priority GP footprint. | draft v3 | Draft versions of simulations incorporating the SCOC Phase 2 recommendations for survey strategy. |
| S1-DDF | ddf_accourd_sf0.30_lsf0.4_lsr0.5_v2.1_10yrs | DDFs with an accordian cadence: 0.30 season fraction, 0.4 low season fraction, 0.5 low season rate | ddf accordian | This family adds an "accordian" low/high rate over each season approach to DDF cadence. The edges of each season are observed at a "low" rate while the center of the season is observed at a faster "high" rate. Each simulation is identified by a total season length fraction (as in ‘ddf season‘) with a similar low season fraction (‘lsf‘) within that and a low season rate (lsr). Thus ‘ddf_accourd_sf0.30_lsf0.4_lsr0.1_v2.1_10yrs‘ would have a fairly short overall season (40% of the available season), a long low season (80% - so 20% high season), and a small low season rate (0.1), leaving most DDF visits concentrated in the center of the season. Conversely, ‘ddf_accourd_sf0.10_lsf0.1_lsr0.5_v2.1_10yrs‘ would have a long overall season, a short low season, and a high rate during the low season, resulting in a very mild accordian effect. This family uses pre-scheduled DDF visits. |
| S2-DDF | ddf_bright_slf0.35_v2.1_10yrs | DDF quad-style sequences running through bright time, season length fraction 0.35 | ddf bright | Similar to the ddf quad family, the sequences for individual DDFs are cut shorter by about 1/4 compared to baseline. In this family, the m5 limits for scheduling visits are relaxed, resulting in visits running more consistently throughout the lunar cycle even into bright time. This family uses pre-scheduled DDF visits. |
| S3-DDF | ddf_double_slf0.35_v2.1_10yrs | Shorter (1/2) DDF sequences, season length fraction 0.35 | ddf double | This family cuts the individual DDF sequences in half, resulting in brighter single night coadded depths, but a shorter interval of nights between visits. This family uses pre-scheduled DDF visits. |
| S4-DDF | ddf_old_rot_slf0.35_v2.1_10yrs | DDF with old rotation dithers (constant rotTelPos), season length fraction 0.35 | ddf old rot | This family adds a validation or comparison option for the remainder of the v2.1 DDF simulations. In this family, the rotation angle is fixed so that rotTelPos is constant; in most v2.1 simulations, rotSkyPos is held fixed. Otherwise this family is similar to ‘ddf season length‘, and uses pre-scheduled DDF visits. |
| S5-DDF | ddf_quad_slf0.35_v2.1_10yrs | Shorter (1/4) DDF sequences, season length fraction 0.35 | ddf quad | This family cuts the individual DDF sequences by four, resulting in brighter single night coadded depths, but an even shorter interval of nights between visits. This family uses pre-scheduled DDF visits. |
| S6-DDF | ddf_quad_subfilter_slf0.35_v2.1_10yrs | Shorter DDF sequences with subsets of the filters, season length fraction 0.35 | ddf quad subfilter | Similar to the ddf quad family, the sequences for individual DDFs are cut shorter by about 1/4 compared to baseline. However, here only some filters are used in each DDF sequence, alternating between active filters on different nights. This family uses pre-scheduled DDF visits. |
| S7-DDF | ddf_season_length_slf0.20_v2.1_10yrs | DDF with season length fraction 0.20 | ddf season length | This family investigates the effect of varying the season length within the DDF fields. ‘season length fraction‘ reflects how much of the available season is used – 0.1 indicates that 10% of the available season is removed at each end (for a total of 80% of the available season used for observations), while 0.3 would indicate that 40% of the total possible season is used. This family uses pre-scheduled DDF visits. |
| S8-DDF | ddf_season_length_slf0.35_v2.1_10yrs | DDF with season length fraction 0.35 | ddf season length | -”- |
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