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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, 16 December 2040 · astronomical night 18:32 → 06:02 (11.5 h) · Moon 98% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:25–18:00: quality 0.1M31 18:00–18:35: quality 0.3M31 18:35–19:35: quality 0.5M31 19:35–22:55: quality 0.4M31 22:55–01:30: quality 0.3M31 01:30–02:05: quality 0.2observe M31 20:40–21:50observe M31 22:25–01:10M42M42 20:30–20:40: quality 0.1M42 20:40–00:30: quality 0.2M42 00:30–03:35: quality 0.3M42 03:35–04:05: quality 0.2observe M42 02:30–03:05M45M45 17:35–18:00: quality 0.1M45 18:00–18:35: quality 0.2M45 18:35–22:00: quality 0.3M45 22:00–00:00: quality 0.2M45 00:00–03:35: quality 0.3M45 03:35–04:05: quality 0.2observe M45 03:05–03:10NGC 7000NGC 7000 17:25–18:00: quality 0.1NGC 7000 18:00–18:35: quality 0.4NGC 7000 18:35–19:15: quality 0.7NGC 7000 19:15–20:45: quality 0.6NGC 7000 20:45–21:40: quality 0.5NGC 7000 21:40–22:05: quality 0.4NGC 7000 22:05–22:35: quality 0.3observe NGC 7000 18:00–19:20V1057 CygV1057 Cyg 17:25–18:00: quality 0.1V1057 Cyg 18:00–18:35: quality 0.4V1057 Cyg 18:35–19:15: quality 0.7V1057 Cyg 19:15–20:45: quality 0.6V1057 Cyg 20:45–21:40: quality 0.5V1057 Cyg 21:40–22:05: quality 0.4V1057 Cyg 22:05–22:35: quality 0.3observe V1057 Cyg 19:20–20:40M33M33 17:25–18:00: quality 0.1M33 18:00–18:35: quality 0.2M33 18:35–20:25: quality 0.4M33 20:25–01:30: quality 0.3M33 01:30–02:15: quality 0.2observe M33 21:50–22:25scheduleNGC 7000V1057 CygM31M3118:0020:0022:0000:0002:0004:0006:00

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
18:00–19:20 NGC 7000 1.33 0.53
19:20–20:40 V1057 Cyg 1.33 0.6
20:40–21:50 M31 1.17 0.39
21:50–22:25 M33 0.58 0.3
22:25–01:10 M31 2.75 0.33
01:10–02:30 — nothing worth pointing at — 1.33
02:30–03:05 M42 0.58 0.31
03:05–03:10 M45 0.08 0.3
03:10–07:45 — nothing worth pointing at — 4.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 37 unknown 18:35–01:10 (marginal) 89.5° at 19:20 49.2° 3.92
M42 Great Orion Nebula 14 unknown 02:30–03:05 (marginal) 42.9° at 00:15 33.3° 0.58
M45 Seven Sisters 23 unknown 18:35–20:15 (marginal) 72.5° at 22:25 8.4° 0.08
NGC 7000 North America Nebula 42 unknown 18:35–19:55 (good) 87.2° at 15:40 88.0° 1.33
V1057 Cyg 42 unknown 18:35–19:55 (good) 87.3° at 15:40 88.0° 1.33
M33 Triangulum Pinwheel 28 unknown 18:35–22:25 (marginal) 79.2° at 20:15 38.3° 0.58
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2040-12-16"

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"}.