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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 Thursday, 20 November 2031 · astronomical night 18:34 → 05:39 (11.09 h) · Moon 42% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:30–18:05: quality 0.1M31 18:05–18:35: quality 0.4M31 18:35–20:45: quality 0.8M31 20:45–23:00: quality 0.9M31 23:00–00:35: quality 1.0M31 00:35–02:00: quality 0.9M31 02:00–02:50: quality 0.8M31 02:50–03:10: quality 0.7M31 03:10–03:25: quality 0.6M31 03:25–03:40: quality 0.5M31 03:40–03:50: quality 0.4observe M31 02:05–03:40M42M42 22:15–22:25: quality 0.4M42 22:25–22:40: quality 0.5M42 22:40–22:55: quality 0.6M42 22:55–23:10: quality 0.7M42 23:10–00:20: quality 0.8M42 00:20–03:45: quality 0.9M42 03:45–04:55: quality 0.8M42 04:55–05:10: quality 0.7M42 05:10–05:25: quality 0.6M42 05:25–05:40: quality 0.5M42 05:40–05:50: quality 0.2observe M42 03:40–05:40M45M45 18:35–18:50: quality 0.4M45 18:50–19:05: quality 0.5M45 19:05–19:20: quality 0.6M45 19:20–19:55: quality 0.7M45 19:55–21:15: quality 0.8M45 21:15–23:00: quality 0.9M45 23:00–02:55: quality 1.0M45 02:55–04:15: quality 0.9M45 04:15–05:00: quality 0.8M45 05:00–05:15: quality 0.7M45 05:15–05:30: quality 0.6M45 05:30–05:40: quality 0.5M45 05:40–05:50: quality 0.2observe M45 22:05–00:05NGC 7000NGC 7000 17:30–18:05: quality 0.1NGC 7000 18:05–18:35: quality 0.4NGC 7000 18:35–21:45: quality 0.8NGC 7000 21:45–23:00: quality 0.7NGC 7000 23:00–23:20: quality 0.8NGC 7000 23:20–23:35: quality 0.7NGC 7000 23:35–23:50: quality 0.6NGC 7000 23:50–00:10: quality 0.5NGC 7000 00:10–00:20: quality 0.4observe NGC 7000 18:05–20:05V1057 CygV1057 Cyg 17:30–18:05: quality 0.1V1057 Cyg 18:05–18:35: quality 0.4V1057 Cyg 18:35–21:45: quality 0.8V1057 Cyg 21:45–23:00: quality 0.7V1057 Cyg 23:00–23:20: quality 0.8V1057 Cyg 23:20–23:35: quality 0.7V1057 Cyg 23:35–23:50: quality 0.6V1057 Cyg 23:50–00:10: quality 0.5V1057 Cyg 00:10–00:20: quality 0.4observe V1057 Cyg 20:05–22:05M33M33 17:30–18:05: quality 0.1M33 18:05–18:35: quality 0.4M33 18:35–20:05: quality 0.8M33 20:05–23:00: quality 0.9M33 23:00–01:00: quality 1.0M33 01:00–02:20: quality 0.9M33 02:20–03:10: quality 0.8M33 03:10–03:25: quality 0.7M33 03:25–03:40: quality 0.6M33 03:40–03:50: quality 0.5M33 03:50–04:00: quality 0.4observe M33 00:05–02:05scheduleNGC 7000V1057 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
16:55–18:05 — nothing worth pointing at — 1.17
18:05–20:05 NGC 7000 2.0 0.7
20:05–22:05 V1057 Cyg 2.0 0.77
22:05–00:05 M45 2.0 0.97
00:05–02:05 M33 2.0 0.94
02:05–03:40 M31 1.58 0.71
03:40–05:40 M42 2.0 0.74
05:40–07:20 — nothing worth pointing at — 1.67

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:35–03:15 (good) 89.5° at 21:05 69.2° 1.58
M42 Great Orion Nebula 89 unknown 22:50–05:20 (good) 42.9° at 02:00 121.9° 2.0
M45 Seven Sisters 100 unknown 19:15–05:20 (good) 72.5° at 00:10 100.0° 2.0
NGC 7000 North America Nebula 81 unknown 18:35–23:45 (good) 87.2° at 17:25 54.6° 2.0
V1057 Cyg 81 unknown 18:35–23:45 (good) 87.3° at 17:25 54.5° 2.0
M33 Triangulum Pinwheel 100 unknown 18:35–03:30 (good) 79.1° at 22:00 73.1° 2.0
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-11-20"

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"}.