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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 Sunday, 23 November 2031 · astronomical night 18:32 → 05:42 (11.16 h) · Moon 75% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:30–18:00: quality 0.1M31 18:00–18:35: quality 0.3M31 18:35–22:30: quality 0.5M31 22:30–02:25: quality 0.6M31 02:25–02:40: quality 0.8M31 02:40–02:55: quality 0.7M31 02:55–03:10: quality 0.6M31 03:10–03:30: quality 0.5M31 03:30–03:35: quality 0.4observe M31 02:00–03:10M42M42 22:00–22:10: quality 0.3M42 22:10–22:35: quality 0.4M42 22:35–22:55: quality 0.5M42 22:55–23:50: quality 0.6M42 23:50–02:25: quality 0.7M42 02:25–03:30: quality 0.9M42 03:30–04:40: quality 0.8M42 04:40–05:00: quality 0.7M42 05:00–05:15: quality 0.6M42 05:15–05:30: quality 0.5M42 05:30–05:35: quality 0.4observe M42 00:00–02:00M45M45 18:25–18:35: quality 0.1M45 18:35–18:50: quality 0.3M45 18:50–19:10: quality 0.4M45 19:10–20:45: quality 0.5M45 20:45–23:00: quality 0.6M45 23:00–01:45: quality 0.7M45 01:45–02:25: quality 0.8M45 02:25–02:40: quality 1.0M45 02:40–04:00: quality 0.9M45 04:00–04:50: quality 0.8M45 04:50–05:05: quality 0.7M45 05:05–05:15: quality 0.6M45 05:15–05:30: quality 0.5M45 05:30–05:35: quality 0.4observe M45 22:00–00:00observe M45 03:45–05:35NGC 7000NGC 7000 17:30–18:00: quality 0.1NGC 7000 18:00–18:35: quality 0.3NGC 7000 18:35–21:10: quality 0.6NGC 7000 21:10–23:15: quality 0.5NGC 7000 23:15–23:45: quality 0.4NGC 7000 23:45–00:05: quality 0.3observe NGC 7000 18:00–20:00V1057 CygV1057 Cyg 17:30–18:00: quality 0.1V1057 Cyg 18:00–18:35: quality 0.3V1057 Cyg 18:35–21:10: quality 0.6V1057 Cyg 21:10–23:15: quality 0.5V1057 Cyg 23:15–23:45: quality 0.4V1057 Cyg 23:45–00:05: quality 0.3observe V1057 Cyg 20:00–22:00M33M33 17:30–18:00: quality 0.1M33 18:00–18:35: quality 0.2M33 18:35–23:00: quality 0.5M33 23:00–02:25: quality 0.6M33 02:25–02:55: 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 03:10–03:45scheduleNGC 7000V1057 CygM45M42M31M4518:0020:0022:0000:0002:0004:0006:00

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 0.51
20:00–22:00 V1057 Cyg 2.0 0.56
22:00–00:00 M45 2.0 0.65
00:00–02:00 M42 2.0 0.71
02:00–03:10 M31 1.17 0.66
03:10–03:45 M33 0.58 0.54
03:45–05:35 M45 1.83 0.73
05:35–07:25 — nothing worth pointing at — 1.83

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 81 unknown 02:25–03:05 (good) 89.7° at 20:55 38.7° 1.17
M42 Great Orion Nebula 88 unknown 23:05–05:05 (good) 42.9° at 01:45 84.9° 2.0
M45 Seven Sisters 97 unknown 21:40–05:10 (good) 72.5° at 00:00 58.7° 3.83
NGC 7000 North America Nebula 47 unknown 18:35–19:00 (good) 87.2° at 17:10 56.2° 2.0
V1057 Cyg 47 unknown 18:35–18:55 (good) 87.3° at 17:10 56.1° 2.0
M33 Triangulum Pinwheel 83 unknown 02:25–03:20 (good) 79.1° at 21:45 35.1° 0.58

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-11-23"

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"}.