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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, 01 December 2027 · astronomical night 18:30 → 05:50 (11.33 h) · Moon 14% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:25–18:00: quality 0.1M31 18:00–18:35: quality 0.5M31 18:35–23:50: quality 1.0M31 23:50–01:15: quality 0.9M31 01:15–02:10: quality 0.8M31 02:10–02:25: quality 0.7M31 02:25–02:40: quality 0.6M31 02:40–02:55: quality 0.5M31 02:55–03:05: quality 0.4observe M31 21:50–23:45M42M42 21:30–21:40: quality 0.4M42 21:40–21:55: quality 0.5M42 21:55–22:10: quality 0.6M42 22:10–22:25: quality 0.7M42 22:25–23:35: quality 0.8M42 23:35–03:00: quality 0.9M42 03:00–04:10: quality 0.8M42 04:10–04:25: quality 0.7M42 04:25–04:40: quality 0.6M42 04:40–05:00: quality 0.5M42 05:00–05:05: quality 0.4observe M42 03:35–05:05M45M45 17:55–18:00: quality 0.1M45 18:00–18:10: quality 0.2M45 18:10–18:35: quality 0.3M45 18:35–18:45: quality 0.7M45 18:45–19:35: quality 0.8M45 19:35–20:50: quality 0.9M45 20:50–02:10: quality 1.0M45 02:10–03:30: quality 0.9M45 03:30–04:20: quality 0.8M45 04:20–04:30: quality 0.7M45 04:30–04:45: quality 0.6M45 04:45–05:00: quality 0.5M45 05:00–05:05: quality 0.4observe M45 01:40–03:35NGC 7000NGC 7000 17:25–18:00: quality 0.1NGC 7000 18:00–18:35: quality 0.5NGC 7000 18:35–20:10: quality 1.0NGC 7000 20:10–21:40: quality 0.9NGC 7000 21:40–22:35: quality 0.8NGC 7000 22:35–22:50: quality 0.7NGC 7000 22:50–23:10: quality 0.6NGC 7000 23:10–23:25: quality 0.5NGC 7000 23:25–23:35: quality 0.4observe NGC 7000 18:00–19:55V1057 CygV1057 Cyg 17:25–18:00: quality 0.1V1057 Cyg 18:00–18:35: quality 0.5V1057 Cyg 18:35–20:10: quality 1.0V1057 Cyg 20:10–21:40: quality 0.9V1057 Cyg 21:40–22:35: quality 0.8V1057 Cyg 22:35–22:50: quality 0.7V1057 Cyg 22:50–23:10: quality 0.6V1057 Cyg 23:10–23:25: quality 0.5V1057 Cyg 23:25–23:35: quality 0.4observe V1057 Cyg 19:55–21:50M33M33 17:25–18:00: quality 0.1M33 18:00–18:35: quality 0.5M33 18:35–00:15: quality 1.0M33 00:15–01:40: quality 0.9M33 01:40–02:25: quality 0.8M33 02:25–02:40: quality 0.7M33 02:40–02:55: quality 0.6M33 02:55–03:10: quality 0.5M33 03:10–03:15: quality 0.4observe M33 23:45–01:40scheduleNGC 7000V1057 CygM31M33M45M4218:0020:0022:0000:0002:0004:0006:00

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
18:00–19:55 NGC 7000 1.92 0.82
19:55–21:50 V1057 Cyg 1.92 0.9
21:50–23:45 M31 1.92 0.99
23:45–01:40 M33 1.92 0.92
01:40–03:35 M45 1.92 0.92
03:35–05:05 M42 1.5 0.67
05:05–07:30 — nothing worth pointing at — 2.42

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:35–02:30 (good) 89.6° at 20:25 94.7° 1.92
M42 Great Orion Nebula 89 unknown 22:00–04:35 (good) 42.9° at 01:15 138.8° 1.5
M45 Seven Sisters 100 unknown 18:35–04:40 (good) 72.5° at 23:25 126.9° 1.92
NGC 7000 North America Nebula 99 unknown 18:35–23:00 (good) 87.3° at 16:40 69.2° 1.92
V1057 Cyg 99 unknown 18:35–23:00 (good) 87.3° at 16:40 69.1° 1.92
M33 Triangulum Pinwheel 100 unknown 18:35–02:45 (good) 79.1° at 21:15 100.1° 1.92
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-12-01"

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"}.