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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, 25 December 2031 · astronomical night 18:36 → 06:06 (11.5 h) · Moon 93% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:30–18:05: quality 0.1M31 18:05–18:15: quality 0.3M31 18:15–18:40: quality 0.2M31 18:40–19:25: quality 0.5M31 19:25–00:25: quality 0.4M31 00:25–01:10: quality 0.3M31 01:10–01:30: quality 0.2observe M31 21:05–22:35M42M42 19:55–20:00: quality 0.1M42 20:00–20:55: quality 0.2M42 20:55–01:55: quality 0.3M42 01:55–02:35: quality 0.4M42 02:35–03:15: quality 0.3M42 03:15–03:30: quality 0.2observe M42 01:45–02:55M45M45 17:30–18:05: quality 0.1M45 18:05–18:40: quality 0.2M45 18:40–02:20: quality 0.3M45 02:20–02:40: quality 0.4M45 02:40–03:15: quality 0.3M45 03:15–03:30: quality 0.2observe M45 00:00–00:30observe M45 00:45–01:45NGC 7000NGC 7000 17:30–18:05: quality 0.1NGC 7000 18:05–18:40: quality 0.3NGC 7000 18:40–18:50: quality 0.7NGC 7000 18:50–20:25: quality 0.6NGC 7000 20:25–21:10: quality 0.5NGC 7000 21:10–21:35: quality 0.4NGC 7000 21:35–22:00: quality 0.3observe NGC 7000 19:35–21:05V1057 CygV1057 Cyg 17:30–18:05: quality 0.1V1057 Cyg 18:05–18:40: quality 0.3V1057 Cyg 18:40–18:50: quality 0.7V1057 Cyg 18:50–20:25: quality 0.6V1057 Cyg 20:25–21:10: quality 0.5V1057 Cyg 21:10–21:35: quality 0.4V1057 Cyg 21:35–22:00: quality 0.3observe V1057 Cyg 18:05–19:35M33M33 17:30–18:05: quality 0.1M33 18:05–18:40: quality 0.2M33 18:40–20:15: quality 0.4M33 20:15–01:10: quality 0.3M33 01:10–01:40: quality 0.2observe M33 22:35–00:00observe M33 00:30–00:45scheduleV1057 CygNGC 7000M31M33M45M4218:0020:0022:0000:0002:0004:0006:00

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
18:05–19:35 V1057 Cyg 1.5 0.52
19:35–21:05 NGC 7000 1.5 0.55
21:05–22:35 M31 1.5 0.39
22:35–00:00 M33 1.42 0.3
00:00–00:30 M45 0.5 0.32
00:30–00:45 M33 0.25 0.3
00:45–01:45 M45 1.0 0.33
01:45–02:55 M42 1.17 0.35
02:55–07:50 — nothing worth pointing at — 4.92

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 33 unknown 18:40–00:50 (marginal) 89.7° at 18:50 47.7° 1.5
M42 Great Orion Nebula 19 unknown 00:00–02:55 (marginal) 42.9° at 23:40 33.6° 1.17
M45 Seven Sisters 26 unknown 23:20–02:55 (marginal) 72.5° at 21:55 6.1° 1.5
NGC 7000 North America Nebula 33 unknown 18:40–19:35 (good) 87.2° at 15:05 87.4° 1.5
V1057 Cyg 33 unknown 18:40–19:35 (good) 87.3° at 15:05 87.4° 1.5
M33 Triangulum Pinwheel 25 unknown 18:40–00:00 (marginal) 79.1° at 19:40 35.5° 1.67
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-12-25"

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"}.