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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, 14 December 2040 · astronomical night 18:31 → 06:00 (11.49 h) · Moon 88% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:25–18:00: quality 0.1M31 18:00–18:35: quality 0.2M31 18:35–01:20: quality 0.4M31 01:20–02:00: quality 0.3M31 02:00–02:10: quality 0.2observe M31 21:30–23:15M42M42 20:35–21:00: quality 0.2M42 21:00–21:40: quality 0.3M42 21:40–00:30: quality 0.4M42 00:30–03:25: quality 0.5M42 03:25–03:55: quality 0.4M42 03:55–04:10: quality 0.3observe M42 23:15–01:00observe M42 04:00–04:05M45M45 17:50–18:00: quality 0.1M45 18:00–18:35: quality 0.2M45 18:35–22:25: quality 0.3M45 22:25–02:15: quality 0.4M45 02:15–03:20: quality 0.5M45 03:20–03:50: quality 0.4M45 03:50–04:10: quality 0.3observe M45 01:50–04:00NGC 7000NGC 7000 17:25–18:00: quality 0.1NGC 7000 18:00–18:35: quality 0.3NGC 7000 18:35–20:15: quality 0.6NGC 7000 20:15–21:45: quality 0.5NGC 7000 21:45–22:10: quality 0.4NGC 7000 22:10–22:40: quality 0.3observe NGC 7000 18:00–19:45V1057 CygV1057 Cyg 17:25–18:00: quality 0.1V1057 Cyg 18:00–18:35: quality 0.3V1057 Cyg 18:35–20:15: quality 0.6V1057 Cyg 20:15–21:45: quality 0.5V1057 Cyg 21:45–22:10: quality 0.4V1057 Cyg 22:10–22:40: quality 0.3observe V1057 Cyg 19:45–21:30M33M33 17:25–18:00: quality 0.1M33 18:00–18:35: quality 0.2M33 18:35–20:20: quality 0.4M33 20:20–22:25: quality 0.3M33 22:25–01:35: quality 0.4M33 01:35–02:10: quality 0.3M33 02:10–02:20: quality 0.2observe M33 01:00–01:50scheduleNGC 7000V1057 CygM31M42M33M4518:0020:0022:0000:0002:0004:0006:00

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
16:50–18:00 — nothing worth pointing at — 1.17
18:00–19:45 NGC 7000 1.75 0.52
19:45–21:30 V1057 Cyg 1.75 0.53
21:30–23:15 M31 1.75 0.38
23:15–01:00 M42 1.75 0.44
01:00–01:50 M33 0.83 0.35
01:50–04:00 M45 2.17 0.43
04:00–04:05 M42 0.08 0.31
04:05–07:45 — nothing worth pointing at — 3.67

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 34 unknown 18:35–01:40 (marginal) 89.8° at 19:30 37.0° 1.75
M42 Great Orion Nebula 39 unknown 21:20–04:05 (marginal) 42.9° at 00:20 47.6° 1.83
M45 Seven Sisters 44 unknown 18:35–04:00 (marginal) 72.5° at 22:35 18.2° 2.17
NGC 7000 North America Nebula 38 unknown 18:35–19:20 (good) 87.2° at 15:45 76.8° 1.75
V1057 Cyg 38 unknown 18:35–19:20 (good) 87.3° at 15:45 76.7° 1.75
M33 Triangulum Pinwheel 29 unknown 18:35–01:50 (marginal) 79.2° at 20:20 22.3° 0.83
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2040-12-14"

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"}.