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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 Tuesday, 23 December 2036 · astronomical night 18:35 → 06:05 (11.5 h) · Moon 32% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:30–18:05: quality 0.1M31 18:05–18:40: quality 0.4M31 18:40–18:55: quality 0.8M31 18:55–23:45: quality 0.9M31 23:45–00:40: quality 0.8M31 00:40–00:55: quality 0.7M31 00:55–01:10: quality 0.6M31 01:10–01:30: quality 0.5M31 01:30–01:35: quality 0.4observe M31 23:35–01:15M42M42 20:00–20:15: quality 0.4M42 20:15–20:30: quality 0.5M42 20:30–20:50: quality 0.6M42 20:50–21:05: quality 0.7M42 21:05–22:25: quality 0.8M42 22:25–01:30: quality 0.9M42 01:30–02:40: quality 0.8M42 02:40–02:55: quality 0.7M42 02:55–03:15: quality 0.6M42 03:15–03:30: quality 0.5M42 03:30–03:35: quality 0.4observe M42 01:15–03:35M45M45 17:30–18:05: quality 0.1M45 18:05–18:40: quality 0.4M45 18:40–19:25: quality 0.8M45 19:25–22:25: quality 0.9M45 22:25–00:40: quality 1.0M45 00:40–02:00: quality 0.9M45 02:00–02:50: quality 0.8M45 02:50–03:00: quality 0.7M45 03:00–03:15: quality 0.6M45 03:15–03:30: quality 0.5M45 03:30–03:35: quality 0.4observe M45 19:45–21:25NGC 7000NGC 7000 17:30–18:05: quality 0.1NGC 7000 18:05–18:40: quality 0.4NGC 7000 18:40–19:55: quality 0.8NGC 7000 19:55–21:10: quality 0.7NGC 7000 21:10–21:30: quality 0.6NGC 7000 21:30–21:45: quality 0.5NGC 7000 21:45–22:05: quality 0.4observe NGC 7000 21:25–21:55V1057 CygV1057 Cyg 17:30–18:05: quality 0.1V1057 Cyg 18:05–18:40: quality 0.4V1057 Cyg 18:40–19:55: quality 0.8V1057 Cyg 19:55–21:10: quality 0.7V1057 Cyg 21:10–21:25: quality 0.6V1057 Cyg 21:25–21:45: quality 0.5V1057 Cyg 21:45–22:05: quality 0.4observe V1057 Cyg 18:05–19:45M33M33 17:30–18:05: quality 0.1M33 18:05–18:40: quality 0.4M33 18:40–19:10: quality 0.8M33 19:10–22:25: quality 0.9M33 22:25–22:50: quality 1.0M33 22:50–00:10: quality 0.9M33 00:10–00:55: quality 0.8M33 00:55–01:10: quality 0.7M33 01:10–01:25: quality 0.6M33 01:25–01:40: quality 0.5M33 01:40–01:45: quality 0.4observe M33 21:55–23:35scheduleV1057 CygM45M33M31M4218:0020:0022:0000:0002:0004:0006:00

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
16:50–18:05 — nothing worth pointing at — 1.25
18:05–19:45 V1057 Cyg 1.67 0.66
19:45–21:25 M45 1.67 0.9
21:25–21:55 NGC 7000 0.5 0.49
21:55–23:35 M33 1.67 0.92
23:35–01:15 M31 1.67 0.76
01:15–03:35 M42 2.33 0.73
03:35–07:50 — nothing worth pointing at — 4.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 94 unknown 18:40–01:05 (good) 89.8° at 18:55 56.4° 1.67
M42 Great Orion Nebula 89 unknown 20:40–03:05 (good) 42.9° at 23:45 98.2° 2.33
M45 Seven Sisters 100 unknown 18:40–03:10 (good) 72.5° at 22:00 78.0° 1.67
NGC 7000 North America Nebula 54 unknown 18:40–21:20 (good) 87.2° at 15:10 60.4° 0.5
V1057 Cyg 54 unknown 18:40–21:20 (good) 87.3° at 15:10 60.4° 1.67
M33 Triangulum Pinwheel 98 unknown 18:40–01:20 (good) 79.2° at 19:45 55.0° 1.67
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2036-12-23"

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"}.