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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, 18 November 2027 · astronomical night 18:35 → 05:37 (11.04 h) · Moon 73% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:30–18:05: quality 0.1M31 18:05–18:40: quality 0.5M31 18:40–21:15: quality 1.0M31 21:15–21:50: quality 0.9M31 21:50–00:35: quality 0.8M31 00:35–02:00: quality 0.7M31 02:00–03:00: quality 0.6M31 03:00–03:25: quality 0.5M31 03:25–03:45: quality 0.4M31 03:45–03:55: quality 0.3observe M31 22:05–00:05M42M42 22:20–22:40: quality 0.3M42 22:40–23:05: quality 0.4M42 23:05–03:25: quality 0.5M42 03:25–05:10: quality 0.4M42 05:10–05:40: quality 0.3M42 05:40–05:55: quality 0.1observe M42 04:05–05:30M45M45 18:45–18:50: quality 0.4M45 18:50–19:05: quality 0.5M45 19:05–19:20: quality 0.6M45 19:20–19:35: quality 0.7M45 19:35–20:20: quality 0.8M45 20:20–21:15: quality 0.9M45 21:15–00:50: quality 0.7M45 00:50–03:15: quality 0.6M45 03:15–05:05: quality 0.5M45 05:05–05:30: quality 0.4M45 05:30–05:40: quality 0.3M45 05:40–05:55: quality 0.1observe M45 02:05–04:05observe M45 05:30–05:40NGC 7000NGC 7000 17:30–18:05: quality 0.2NGC 7000 18:05–18:40: quality 0.5NGC 7000 18:40–21:00: quality 1.0NGC 7000 21:00–21:25: quality 0.9NGC 7000 21:25–22:50: quality 0.8NGC 7000 22:50–23:30: quality 0.7NGC 7000 23:30–23:50: quality 0.6NGC 7000 23:50–00:05: quality 0.5NGC 7000 00:05–00:25: quality 0.4observe NGC 7000 18:05–20:05V1057 CygV1057 Cyg 17:30–18:05: quality 0.2V1057 Cyg 18:05–18:40: quality 0.5V1057 Cyg 18:40–21:00: quality 1.0V1057 Cyg 21:00–21:25: quality 0.9V1057 Cyg 21:25–22:50: quality 0.8V1057 Cyg 22:50–23:30: quality 0.7V1057 Cyg 23:30–23:50: quality 0.6V1057 Cyg 23:50–00:05: quality 0.5V1057 Cyg 00:05–00:25: quality 0.4observe V1057 Cyg 20:05–22:05M33M33 17:30–18:05: quality 0.1M33 18:05–18:30: quality 0.4M33 18:30–18:40: quality 0.5M33 18:40–19:10: quality 0.9M33 19:10–21:15: quality 1.0M33 21:15–00:45: quality 0.8M33 00:45–02:05: quality 0.7M33 02:05–03:15: quality 0.6M33 03:15–03:35: quality 0.5M33 03:35–03:55: quality 0.4M33 03:55–04:05: quality 0.3observe M33 00:05–02:05scheduleNGC 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
16:55–18:05 — nothing worth pointing at — 1.17
18:05–20:05 NGC 7000 2.0 0.85
20:05–22:05 V1057 Cyg 2.0 0.91
22:05–00:05 M31 2.0 0.82
00:05–02:05 M33 2.0 0.72
02:05–04:05 M45 2.0 0.56
04:05–05:30 M42 1.42 0.39
05:30–05:40 M45 0.17 0.32
05:40–07:15 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:40–02:50 (good) 89.7° at 21:15 90.3° 2.0
M42 Great Orion Nebula 43 unknown 22:25–05:30 (marginal) 42.9° at 02:05 44.9° 1.42
M45 Seven Sisters 92 unknown 19:10–02:25 (good) 72.5° at 00:20 58.9° 2.17
NGC 7000 North America Nebula 100 unknown 18:40–23:40 (good) 87.2° at 17:30 113.5° 2.0
V1057 Cyg 100 unknown 18:40–23:40 (good) 87.3° at 17:30 113.5° 2.0
M33 Triangulum Pinwheel 100 unknown 18:40–02:50 (good) 79.1° at 22:05 85.5° 2.0
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-11-18"

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"}.