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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 Wednesday, 16 December 2037 · astronomical night 18:32 → 06:01 (11.5 h) · Moon 71% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:25–18:00: quality 0.1M31 18:00–18:35: quality 0.3M31 18:35–21:20: quality 0.5M31 21:20–23:50: quality 0.6M31 23:50–01:25: quality 0.5M31 01:25–01:50: quality 0.4M31 01:50–02:05: quality 0.3observe M31 21:30–23:15M42M42 20:30–20:50: quality 0.3M42 20:50–21:15: quality 0.4M42 21:15–22:00: quality 0.5M42 22:00–00:25: quality 0.6M42 00:25–02:15: quality 0.7M42 02:15–03:10: quality 0.8M42 03:10–03:25: quality 0.7M42 03:25–03:40: quality 0.6M42 03:40–03:55: quality 0.5M42 03:55–04:05: quality 0.4observe M42 23:15–01:00M45M45 17:25–18:00: quality 0.1M45 18:00–18:35: quality 0.2M45 18:35–21:00: quality 0.5M45 21:00–00:15: quality 0.6M45 00:15–01:50: quality 0.7M45 01:50–02:15: quality 0.6M45 02:15–02:30: quality 0.9M45 02:30–03:15: quality 0.8M45 03:15–03:30: quality 0.7M45 03:30–03:45: quality 0.6M45 03:45–04:00: quality 0.5M45 04:00–04:05: quality 0.4observe M45 02:05–04:05NGC 7000NGC 7000 17:25–18:00: quality 0.1NGC 7000 18:00–18:35: quality 0.3NGC 7000 18:35–19:10: quality 0.7NGC 7000 19:10–21:25: quality 0.6NGC 7000 21:25–21:50: quality 0.5NGC 7000 21:50–22:15: quality 0.4NGC 7000 22:15–22:35: quality 0.3observe NGC 7000 18:00–19:45V1057 CygV1057 Cyg 17:25–18:00: quality 0.1V1057 Cyg 18:00–18:35: quality 0.3V1057 Cyg 18:35–19:10: quality 0.7V1057 Cyg 19:10–21:25: quality 0.6V1057 Cyg 21:25–21:50: quality 0.5V1057 Cyg 21:50–22:15: quality 0.4V1057 Cyg 22:15–22:35: quality 0.3observe V1057 Cyg 19:45–21:30M33M33 17:25–18:00: quality 0.1M33 18:00–18:35: quality 0.3M33 18:35–01:40: quality 0.5M33 01:40–02:00: quality 0.4M33 02:00–02:15: quality 0.3observe M33 01:00–02:05scheduleNGC 7000V1057 CygM31M42M33M4518:0020:0022:0000:0002:0004:0006:00

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
16:50–18:00 — nothing worth pointing at — 1.17
18:00–19:45 NGC 7000 1.75 0.55
19:45–21:30 V1057 Cyg 1.75 0.58
21:30–23:15 M31 1.75 0.56
23:15–01:00 M42 1.75 0.64
01:00–02:05 M33 1.08 0.46
02:05–04:05 M45 2.0 0.71
04:05–07:45 — nothing worth pointing at — 3.67

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 57 unknown 18:35–02:05 (marginal) 89.6° at 19:25 39.2° 1.75
M42 Great Orion Nebula 84 unknown 23:05–03:35 (good) 42.9° at 00:15 63.5° 1.75
M45 Seven Sisters 87 unknown 23:00–03:35 (good) 72.5° at 22:25 40.4° 2.0
NGC 7000 North America Nebula 42 unknown 18:35–20:10 (good) 87.2° at 15:40 70.9° 1.75
V1057 Cyg 42 unknown 18:35–20:10 (good) 87.3° at 15:40 70.9° 1.75
M33 Triangulum Pinwheel 54 unknown 18:35–02:10 (marginal) 79.2° at 20:15 27.6° 1.08
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2037-12-16"

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"}.