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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 November 2027 · astronomical night 18:32 → 05:42 (11.16 h) · Moon 20% (waning crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:30–18:00: quality 0.1M31 18:00–18:35: quality 0.5M31 18:35–00:20: quality 1.0M31 00:20–01:45: quality 0.9M31 01:45–02:40: quality 0.8M31 02:40–02:55: quality 0.7M31 02:55–03:10: quality 0.6M31 03:10–03:25: quality 0.5M31 03:25–03:35: quality 0.4observe M31 22:00–00:00M42M42 22:00–22:10: quality 0.4M42 22:10–22:25: quality 0.5M42 22:25–22:40: quality 0.6M42 22:40–23:00: quality 0.7M42 23:00–00:10: quality 0.8M42 00:10–03:20: quality 0.9M42 03:20–04:35: quality 0.8M42 04:35–04:55: quality 0.7M42 04:55–05:10: quality 0.6M42 05:10–05:25: quality 0.5M42 05:25–05:35: quality 0.4observe M42 04:00–05:35M45M45 18:25–18:35: quality 0.2M45 18:35–18:45: quality 0.5M45 18:45–19:00: quality 0.6M45 19:00–19:15: quality 0.7M45 19:15–20:00: quality 0.8M45 20:00–21:20: quality 0.9M45 21:20–02:40: quality 1.0M45 02:40–03:50: quality 0.9M45 03:50–04:45: quality 0.8M45 04:45–05:00: quality 0.7M45 05:00–05:15: quality 0.6M45 05:15–05:30: quality 0.5M45 05:30–05:35: quality 0.4observe M45 02:00–04:00NGC 7000NGC 7000 17:30–18:00: quality 0.2NGC 7000 18:00–18:35: quality 0.5NGC 7000 18:35–20:40: quality 1.0NGC 7000 20:40–22:10: quality 0.9NGC 7000 22:10–23:05: quality 0.8NGC 7000 23:05–23:25: quality 0.7NGC 7000 23:25–23:40: quality 0.6NGC 7000 23:40–23:55: quality 0.5NGC 7000 23:55–00:05: quality 0.4observe NGC 7000 18:00–20:00V1057 CygV1057 Cyg 17:30–18:00: quality 0.2V1057 Cyg 18:00–18:35: quality 0.5V1057 Cyg 18:35–20:40: quality 1.0V1057 Cyg 20:40–22:10: quality 0.9V1057 Cyg 22:10–23:05: quality 0.8V1057 Cyg 23:05–23:25: quality 0.7V1057 Cyg 23:25–23:40: quality 0.6V1057 Cyg 23:40–23:55: quality 0.5V1057 Cyg 23:55–00:05: quality 0.4observe V1057 Cyg 20:00–22:00M33M33 17:30–18:00: quality 0.1M33 18:00–18:10: quality 0.4M33 18:10–18:35: quality 0.5M33 18:35–18:50: quality 0.9M33 18:50–00:50: quality 1.0M33 00:50–02:10: quality 0.9M33 02:10–02:55: quality 0.8M33 02:55–03:10: quality 0.7M33 03:10–03:25: quality 0.6M33 03:25–03:40: quality 0.5M33 03:40–03:45: quality 0.4observe M33 00:00–02:00scheduleNGC 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
16:55–18:00 — nothing worth pointing at — 1.08
18:00–20:00 NGC 7000 2.0 0.85
20:00–22:00 V1057 Cyg 2.0 0.93
22:00–00:00 M31 2.0 1.0
00:00–02:00 M33 2.0 0.94
02:00–04:00 M45 2.0 0.92
04:00–05:35 M42 1.58 0.66
05:35–07:25 — nothing worth pointing at — 1.83

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:35–03:05 (good) 89.7° at 20:55 146.2° 2.0
M42 Great Orion Nebula 89 unknown 22:35–05:00 (good) 42.9° at 01:45 101.5° 1.58
M45 Seven Sisters 100 unknown 18:55–05:10 (good) 72.5° at 00:00 129.2° 2.0
NGC 7000 North America Nebula 100 unknown 18:35–23:30 (good) 87.2° at 17:10 122.3° 2.0
V1057 Cyg 100 unknown 18:35–23:30 (good) 87.3° at 17:10 122.3° 2.0
M33 Triangulum Pinwheel 100 unknown 18:35–03:20 (good) 79.1° at 21:45 151.9° 2.0
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-11-23"

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"}.