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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 Monday, 28 September 2037 · astronomical night 20:40 → 05:43 (9.05 h) · Moon 83% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:40–20:10: quality 0.1M31 20:10–20:45: quality 0.4M31 20:45–21:35: quality 0.9M31 21:35–00:50: quality 0.6M31 00:50–04:40: quality 0.5M31 04:40–05:45: quality 0.4M31 05:45–06:20: quality 0.2M31 06:20–06:50: quality 0.1observe M31 23:30–01:10M42M42 02:40–03:10: quality 0.2M42 03:10–05:00: quality 0.3M42 05:00–05:45: quality 0.4M42 05:45–06:20: quality 0.2M42 06:20–06:50: quality 0.1observe M42 04:30–05:45M45M45 23:05–23:10: quality 0.2M45 23:10–23:35: quality 0.3M45 23:35–05:45: quality 0.4M45 05:45–06:20: quality 0.2M45 06:20–06:50: quality 0.1observe M45 02:50–04:30NGC 7000NGC 7000 19:40–20:10: quality 0.2NGC 7000 20:10–20:45: quality 0.5NGC 7000 20:45–21:35: quality 1.0NGC 7000 21:35–00:20: quality 0.8NGC 7000 00:20–01:55: quality 0.7NGC 7000 01:55–03:35: quality 0.6NGC 7000 03:35–04:00: quality 0.5NGC 7000 04:00–04:25: quality 0.4NGC 7000 04:25–04:45: quality 0.3observe NGC 7000 20:10–21:50V1057 CygV1057 Cyg 19:40–20:10: quality 0.2V1057 Cyg 20:10–20:45: quality 0.5V1057 Cyg 20:45–21:35: quality 1.0V1057 Cyg 21:35–00:20: quality 0.8V1057 Cyg 00:20–01:55: quality 0.7V1057 Cyg 01:55–03:35: quality 0.6V1057 Cyg 03:35–04:00: quality 0.5V1057 Cyg 04:00–04:25: quality 0.4V1057 Cyg 04:25–04:45: quality 0.3observe V1057 Cyg 21:50–23:30M33M33 20:30–20:45: quality 0.2M33 20:45–20:50: quality 0.5M33 20:50–21:05: quality 0.6M33 21:05–21:20: quality 0.7M33 21:20–21:35: quality 0.8M33 21:35–01:40: quality 0.5M33 01:40–05:45: quality 0.4M33 05:45–06:20: quality 0.2M33 06:20–06:50: quality 0.1observe M33 01:10–02:50scheduleNGC 7000V1057 CygM31M33M45M4220:0022:0000:0002:0004:0006:00

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
19:05–20:10 — nothing worth pointing at — 1.08
20:10–21:50 NGC 7000 1.67 0.8
21:50–23:30 V1057 Cyg 1.67 0.8
23:30–01:10 M31 1.67 0.57
01:10–02:50 M33 1.67 0.44
02:50–04:30 M45 1.67 0.38
04:30–05:45 M42 1.25 0.35
05:45–07:20 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 90 unknown 20:45–23:45 (good) 89.7° at 01:35 45.7° 1.67
M42 Great Orion Nebula 10 unknown 03:30–05:45 (marginal) 42.9° at 06:25 35.9° 1.25
M45 Seven Sisters 28 unknown 23:25–05:45 (marginal) 72.5° at 04:35 9.7° 1.67
NGC 7000 North America Nebula 100 unknown 20:45–02:40 (good) 87.2° at 21:50 86.1° 1.67
V1057 Cyg 100 unknown 20:45–02:40 (good) 87.3° at 21:50 86.1° 1.67
M33 Triangulum Pinwheel 81 unknown 20:55–21:35 (good) 79.2° at 02:25 32.1° 1.67
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2037-09-28"

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"}.