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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 Tuesday, 19 December 2045 · astronomical night 18:33 → 06:03 (11.51 h) · Moon 81% (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 18:35–01:10: quality 0.4M31 01:10–01:45: quality 0.3M31 01:45–01:55: quality 0.2observe M31 00:40–01:30M42M42 20:20–20:30: quality 0.2M42 20:30–21:00: quality 0.3M42 21:00–22:05: quality 0.4M42 22:05–01:00: quality 0.5M42 01:00–02:55: quality 0.6M42 02:55–03:20: quality 0.5M42 03:20–03:45: quality 0.4M42 03:45–03:50: quality 0.3M42 03:50–03:55: quality 0.4observe M42 21:20–23:00observe M42 03:45–03:55M45M45 17:30–18:00: quality 0.1M45 18:00–18:35: quality 0.2M45 18:35–23:35: quality 0.4M45 23:35–03:10: quality 0.5M45 03:10–03:35: quality 0.4M45 03:35–03:50: quality 0.3M45 03:50–03:55: quality 0.4observe M45 01:30–03:45NGC 7000NGC 7000 17:25–18:00: quality 0.1NGC 7000 18:00–18:35: quality 0.3NGC 7000 18:35–19:25: quality 0.6NGC 7000 19:25–21:20: quality 0.5NGC 7000 21:20–21:50: quality 0.4NGC 7000 21:50–22:20: quality 0.3NGC 7000 22:20–22:25: quality 0.2observe NGC 7000 18:00–19:40V1057 CygV1057 Cyg 17:25–18:00: quality 0.1V1057 Cyg 18:00–18:35: quality 0.3V1057 Cyg 18:35–19:25: quality 0.6V1057 Cyg 19:25–21:20: quality 0.5V1057 Cyg 21:20–21:50: quality 0.4V1057 Cyg 21:50–22:20: quality 0.3observe V1057 Cyg 19:40–21:20M33M33 17:25–18:00: quality 0.1M33 18:00–18:35: quality 0.2M33 18:35–01:30: quality 0.4M33 01:30–02:00: quality 0.3M33 02:00–02:05: quality 0.2observe M33 23:00–00:40scheduleNGC 7000V1057 CygM42M33M31M4518:0020:0022:0000:0002:0004:0006:00

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
18:00–19:40 NGC 7000 1.67 0.48
19:40–21:20 V1057 Cyg 1.67 0.5
21:20–23:00 M42 1.67 0.45
23:00–00:40 M33 1.67 0.41
00:40–01:30 M31 0.83 0.36
01:30–03:45 M45 2.25 0.47
03:45–03:55 M42 0.17 0.37
03:55–07:45 — nothing worth pointing at — 3.83

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 30 unknown 18:35–01:30 (marginal) 89.7° at 19:10 29.4° 0.83
M42 Great Orion Nebula 51 unknown 20:45–03:55 (marginal) 42.9° at 00:05 55.9° 1.83
M45 Seven Sisters 50 unknown 18:35–03:45 (marginal) 72.6° at 22:15 23.1° 2.25
NGC 7000 North America Nebula 31 unknown 18:00–22:05 (marginal) 87.2° at 15:25 68.6° 1.67
V1057 Cyg 30 unknown 18:00–22:05 (marginal) 87.2° at 15:25 68.6° 1.67
M33 Triangulum Pinwheel 32 unknown 18:35–01:45 (marginal) 79.2° at 20:05 14.6° 1.67
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2045-12-19"

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"}.