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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 Friday, 24 December 2027 · astronomical night 18:35 → 06:05 (11.5 h) · Moon 8% (waning crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:30–18:05: quality 0.2M31 18:05–18:40: quality 0.5M31 18:40–22:20: quality 1.0M31 22:20–23:45: quality 0.9M31 23:45–00:40: quality 0.8M31 00:40–00:55: quality 0.7M31 00:55–01:10: quality 0.6M31 01:10–01:25: quality 0.5M31 01:25–01:35: quality 0.4observe M31 19:45–21:25M42M42 20:00–20:05: quality 0.4M42 20:05–20:25: quality 0.5M42 20:25–20:40: quality 0.6M42 20:40–20:55: quality 0.7M42 20:55–22:05: quality 0.8M42 22:05–01:30: quality 0.9M42 01:30–02:40: quality 0.8M42 02:40–02:55: quality 0.7M42 02:55–03:10: quality 0.6M42 03:10–03:25: quality 0.5M42 03:25–03:35: quality 0.4observe M42 01:15–03:35M45M45 17:30–18:05: quality 0.1M45 18:05–18:40: quality 0.4M45 18:40–19:20: quality 0.9M45 19:20–00:40: quality 1.0M45 00:40–02:00: quality 0.9M45 02:00–02:45: quality 0.8M45 02:45–03:00: quality 0.7M45 03:00–03:15: quality 0.6M45 03:15–03:30: quality 0.5M45 03:30–03:35: quality 0.4observe M45 23:35–01:15NGC 7000NGC 7000 17:30–17:55: quality 0.2NGC 7000 17:55–18:05: quality 0.1NGC 7000 18:05–18:40: quality 0.5NGC 7000 18:40–20:10: quality 0.9NGC 7000 20:10–21:05: quality 0.8NGC 7000 21:05–21:20: quality 0.7NGC 7000 21:20–21:40: quality 0.6NGC 7000 21:40–21:55: quality 0.5NGC 7000 21:55–22:05: quality 0.4observe NGC 7000 21:25–21:55V1057 CygV1057 Cyg 17:30–17:55: quality 0.2V1057 Cyg 17:55–18:05: quality 0.1V1057 Cyg 18:05–18:40: quality 0.5V1057 Cyg 18:40–20:10: quality 0.9V1057 Cyg 20:10–21:05: quality 0.8V1057 Cyg 21:05–21:20: quality 0.7V1057 Cyg 21:20–21:40: quality 0.6V1057 Cyg 21:40–21:55: quality 0.5V1057 Cyg 21:55–22:05: quality 0.4observe V1057 Cyg 18:05–19:45M33M33 17:30–18:05: quality 0.2M33 18:05–18:40: quality 0.5M33 18:40–22:45: quality 1.0M33 22:45–00:05: quality 0.9M33 00:05–00:55: quality 0.8M33 00:55–01:10: quality 0.7M33 01:10–01:25: quality 0.6M33 01:25–01:40: quality 0.5M33 01:40–01:45: quality 0.4observe M33 21:55–23:35scheduleV1057 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
18:05–19:45 V1057 Cyg 1.67 0.76
19:45–21:25 M31 1.67 1.0
21:25–21:55 NGC 7000 0.5 0.54
21:55–23:35 M33 1.67 0.95
23:35–01:15 M45 1.67 0.96
01:15–03:35 M42 2.33 0.73
03:35–07:50 — nothing worth pointing at — 4.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:40–01:00 (good) 89.6° at 18:55 139.1° 1.67
M42 Great Orion Nebula 89 unknown 20:30–03:05 (good) 42.9° at 23:45 139.6° 2.33
M45 Seven Sisters 100 unknown 18:40–03:05 (good) 72.5° at 21:55 179.2° 1.67
NGC 7000 North America Nebula 72 unknown 18:40–21:30 (good) 87.3° at 15:10 99.4° 0.5
V1057 Cyg 72 unknown 18:40–21:30 (good) 87.3° at 15:10 99.4° 1.67
M33 Triangulum Pinwheel 100 unknown 18:40–01:15 (good) 79.1° at 19:45 150.7° 1.67
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-12-24"

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"}.