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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 Wednesday, 20 December 2034 · astronomical night 18:33 → 06:04 (11.51 h) · Moon 74% (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 0.3M31 18:35–01:00: quality 0.5M31 01:00–01:30: quality 0.4M31 01:30–01:50: quality 0.3observe M31 21:20–23:00M42M42 20:15–20:40: quality 0.3M42 20:40–21:10: quality 0.4M42 21:10–22:40: quality 0.5M42 22:40–02:40: quality 0.6M42 02:40–02:55: quality 0.8M42 02:55–03:10: quality 0.7M42 03:10–03:25: quality 0.6M42 03:25–03:40: quality 0.5M42 03:40–03:50: quality 0.4observe M42 23:00–00:40M45M45 17:25–18:00: quality 0.1M45 18:00–18:35: quality 0.2M45 18:35–19:10: quality 0.4M45 19:10–23:15: quality 0.5M45 23:15–02:40: quality 0.6M45 02:40–03:00: quality 0.8M45 03:00–03:15: quality 0.7M45 03:15–03:30: quality 0.6M45 03:30–03:45: quality 0.5M45 03:45–03:50: quality 0.4observe M45 01:55–03:50NGC 7000NGC 7000 17:25–18:00: quality 0.1NGC 7000 18:00–18:35: quality 0.3NGC 7000 18:35–18:40: quality 0.7NGC 7000 18:40–20:45: quality 0.6NGC 7000 20:45–21:35: quality 0.5NGC 7000 21:35–22:00: quality 0.4NGC 7000 22:00–22:20: quality 0.3observe NGC 7000 19:40–21:20V1057 CygV1057 Cyg 17:25–18:00: quality 0.1V1057 Cyg 18:00–18:35: quality 0.3V1057 Cyg 18:35–18:40: quality 0.7V1057 Cyg 18:40–20:45: quality 0.6V1057 Cyg 20:45–21:35: quality 0.5V1057 Cyg 21:35–22:00: quality 0.4V1057 Cyg 22:00–22:20: quality 0.3observe V1057 Cyg 18:00–19:40M33M33 17:25–18:00: quality 0.1M33 18:00–18:35: quality 0.2M33 18:35–01:15: quality 0.5M33 01:15–01:40: quality 0.4M33 01:40–02:00: quality 0.3observe M33 00:40–01:55scheduleV1057 CygNGC 7000M31M42M33M4518:0020:0022:0000:0002:0004:0006:00

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 V1057 Cyg 1.67 0.52
19:40–21:20 NGC 7000 1.67 0.56
21:20–23:00 M31 1.67 0.51
23:00–00:40 M42 1.67 0.59
00:40–01:55 M33 1.25 0.43
01:55–03:50 M45 1.92 0.62
03:50–07:45 — nothing worth pointing at — 3.92

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 49 unknown 18:35–01:45 (marginal) 89.6° at 19:10 36.5° 1.67
M42 Great Orion Nebula 80 unknown 00:00–03:20 (good) 42.9° at 00:00 58.8° 1.67
M45 Seven Sisters 82 unknown 02:40–03:20 (good) 72.5° at 22:10 33.4° 1.92
NGC 7000 North America Nebula 37 unknown 18:35–19:35 (good) 87.2° at 15:25 71.7° 1.67
V1057 Cyg 37 unknown 18:35–19:35 (good) 87.3° at 15:25 71.6° 1.67
M33 Triangulum Pinwheel 46 unknown 18:35–01:55 (marginal) 79.1° at 20:00 23.3° 1.25
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2034-12-20"

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"}.