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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 Monday, 17 December 2035 · astronomical night 18:32 → 06:02 (11.5 h) · Moon 88% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:25–18:00: quality 0.2M31 18:00–18:35: quality 0.5M31 18:35–20:05: quality 1.0M31 20:05–20:35: quality 0.9M31 20:35–22:50: quality 0.8M31 22:50–00:15: quality 0.7M31 00:15–01:10: quality 0.6M31 01:10–01:30: quality 0.5M31 01:30–01:50: quality 0.4M31 01:50–02:05: quality 0.3observe M31 19:40–21:20M42M42 20:25–20:45: quality 0.3M42 20:45–21:15: quality 0.4M42 21:15–00:15: quality 0.5M42 00:15–03:00: quality 0.4M42 03:00–03:40: quality 0.3M42 03:40–04:05: quality 0.2observe M42 01:50–03:20M45M45 17:25–18:00: quality 0.1M45 18:00–18:35: quality 0.4M45 18:35–19:45: quality 0.9M45 19:45–20:05: quality 1.0M45 20:05–22:50: quality 0.7M45 22:50–01:05: quality 0.6M45 01:05–03:00: quality 0.5M45 03:00–03:30: quality 0.4M45 03:30–03:55: quality 0.3M45 03:55–04:05: quality 0.2observe M45 00:10–01:50observe M45 03:20–03:45NGC 7000NGC 7000 17:25–18:00: quality 0.2NGC 7000 18:00–18:35: quality 0.5NGC 7000 18:35–19:05: quality 1.0NGC 7000 19:05–20:05: quality 0.9NGC 7000 20:05–21:05: quality 0.8NGC 7000 21:05–21:35: quality 0.7NGC 7000 21:35–21:55: quality 0.6NGC 7000 21:55–22:15: quality 0.5NGC 7000 22:15–22:30: quality 0.4observe NGC 7000 18:00–19:40V1057 CygV1057 Cyg 17:25–18:00: quality 0.2V1057 Cyg 18:00–18:35: quality 0.5V1057 Cyg 18:35–19:05: quality 1.0V1057 Cyg 19:05–20:05: quality 0.9V1057 Cyg 20:05–21:05: quality 0.8V1057 Cyg 21:05–21:35: quality 0.7V1057 Cyg 21:35–21:55: quality 0.6V1057 Cyg 21:55–22:15: quality 0.5V1057 Cyg 22:15–22:30: quality 0.4observe V1057 Cyg 21:20–22:30M33M33 17:25–17:55: quality 0.1M33 17:55–18:00: quality 0.2M33 18:00–18:35: quality 0.5M33 18:35–20:05: quality 1.0M33 20:05–22:55: quality 0.8M33 22:55–00:15: quality 0.7M33 00:15–01:20: quality 0.6M33 01:20–01:40: quality 0.5M33 01:40–02:00: quality 0.4M33 02:00–02:15: quality 0.3observe M33 22:30–00:10scheduleNGC 7000M31V1057 CygM33M45M4218:0020:0022:0000:0002:0004:0006:00

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 0.79
19:40–21:20 M31 1.67 0.89
21:20–22:30 V1057 Cyg 1.17 0.55
22:30–00:10 M33 1.67 0.72
00:10–01:50 M45 1.67 0.56
01:50–03:20 M42 1.5 0.37
03:20–03:45 M45 0.42 0.34
03:45–07:45 — nothing worth pointing at — 4.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:35–01:00 (good) 89.7° at 19:20 98.5° 1.67
M42 Great Orion Nebula 40 unknown 20:35–03:20 (marginal) 42.9° at 00:15 49.5° 1.5
M45 Seven Sisters 97 unknown 18:35–00:20 (good) 72.5° at 22:25 67.2° 2.08
NGC 7000 North America Nebula 84 unknown 18:35–21:45 (good) 87.2° at 15:35 118.7° 1.67
V1057 Cyg 84 unknown 18:35–21:45 (good) 87.3° at 15:35 118.7° 1.17
M33 Triangulum Pinwheel 100 unknown 18:35–01:00 (good) 79.1° at 20:10 93.9° 1.67
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2035-12-17"

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"}.