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Rozhen Night Plan

Up to ten targets, one night: each gets its good/marginal/poor windows (darkness × altitude × Moon × clouds, as on the single-target page), then the night is handed out five minutes at a time to whichever target is best — with hysteresis, so you get a few solid blocks of at least 30 minutes, not a flicker. Targets that never win a block are listed with the reason.

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Night of Friday, 25 September 2037 · astronomical night 20:45 → 05:39 (8.9 h) · Moon 98% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:45–20:15: quality 0.1M31 20:15–20:50: quality 0.3M31 20:50–23:10: quality 0.5M31 23:10–05:40: quality 0.4M31 05:40–06:15: quality 0.2M31 06:15–06:50: quality 0.1observe M31 23:25–01:00M42M42 02:50–03:05: quality 0.2M42 03:05–03:35: quality 0.3M42 03:35–04:25: quality 0.4M42 04:25–05:40: quality 0.5M42 05:40–06:15: quality 0.3M42 06:15–06:50: quality 0.1observe M42 04:10–05:40M45M45 23:15–23:40: quality 0.2M45 23:40–01:40: quality 0.3M45 01:40–05:20: quality 0.4M45 05:20–05:40: quality 0.5M45 05:40–06:15: quality 0.2M45 06:15–06:50: quality 0.1observe M45 01:00–02:35NGC 7000NGC 7000 19:45–20:10: quality 0.2NGC 7000 20:10–20:15: quality 0.1NGC 7000 20:15–20:50: quality 0.4NGC 7000 20:50–22:15: quality 0.7NGC 7000 22:15–01:10: quality 0.6NGC 7000 01:10–03:50: quality 0.5NGC 7000 03:50–04:20: quality 0.4NGC 7000 04:20–04:50: quality 0.3NGC 7000 04:50–04:55: quality 0.2observe NGC 7000 20:15–21:50V1057 CygV1057 Cyg 19:45–20:10: quality 0.2V1057 Cyg 20:10–20:15: quality 0.1V1057 Cyg 20:15–20:50: quality 0.4V1057 Cyg 20:50–22:15: quality 0.7V1057 Cyg 22:15–01:10: quality 0.6V1057 Cyg 01:10–03:50: quality 0.5V1057 Cyg 03:50–04:20: quality 0.4V1057 Cyg 04:20–04:50: quality 0.3V1057 Cyg 04:50–04:55: quality 0.2observe V1057 Cyg 21:50–23:25M33M33 20:40–20:50: quality 0.1M33 20:50–21:20: quality 0.3M33 21:20–00:05: quality 0.4M33 00:05–04:35: quality 0.3M33 04:35–05:40: quality 0.4M33 05:40–06:15: quality 0.2M33 06:15–06:50: quality 0.1observe M33 02:35–04:10scheduleNGC 7000V1057 CygM31M45M33M4220:0022:0000:0002:0004:0006:00

Each row is the target's quality through the night, white → amber → green for 0 → 0.3 → 0.6 → 1 (the same thresholds as poor / marginal / good). Dark blue: the schedule. Grey columns: twilight.  Download: schedule CSV · targets CSV · JSON

Schedule

localtargethoursmean quality
19:10–20:15 — nothing worth pointing at — 1.08
20:15–21:50 NGC 7000 1.58 0.57
21:50–23:25 V1057 Cyg 1.58 0.64
23:25–01:00 M31 1.58 0.41
01:00–02:35 M45 1.58 0.35
02:35–04:10 M33 1.58 0.32
04:10–05:40 M42 1.5 0.48
05:40–07:15 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 50 unknown 20:50–05:40 (marginal) 89.8° at 01:45 39.3° 1.58
M42 Great Orion Nebula 17 unknown 03:20–05:40 (marginal) 42.9° at 06:35 64.9° 1.5
M45 Seven Sisters 29 unknown 23:55–05:40 (marginal) 72.5° at 04:50 41.8° 1.58
NGC 7000 North America Nebula 71 unknown 20:50–23:35 (good) 87.2° at 22:00 70.1° 1.58
V1057 Cyg 71 unknown 20:50–23:35 (good) 87.3° at 22:00 70.1° 1.58
M33 Triangulum Pinwheel 32 unknown 21:00–05:40 (marginal) 79.2° at 02:35 28.1° 1.58
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2037-09-25"

targets: names or RA Dec, separated by commas, semicolons or newlines, at most ten. The response carries targets[] (score, verdict, best_window, windows, transit, moon_separation), schedule[] (blocks with target, start/end in UTC and local, hours, mean_quality; target: null is idle time), unscheduled[] with a why, forecast_source, warnings[]. Missing targets → 400 {"error", "code": "targets_missing"}; an unreadable date → 400 {"error", "code": "invalid_date"}.