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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, 11 December 2040 · astronomical night 18:30 → 05:58 (11.47 h) · Moon 60% (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 18:35–20:15: quality 0.6M31 20:15–00:50: quality 0.7M31 00:50–01:00: quality 0.6M31 01:00–01:25: quality 0.8M31 01:25–01:45: quality 0.7M31 01:45–02:00: quality 0.6M31 02:00–02:15: quality 0.5M31 02:15–02:25: quality 0.4observe M31 01:00–02:15M42M42 20:50–20:55: quality 0.3M42 20:55–21:15: quality 0.4M42 21:15–21:35: quality 0.5M42 21:35–22:05: quality 0.6M42 22:05–00:20: quality 0.7M42 00:20–01:00: quality 0.8M42 01:00–02:20: quality 0.9M42 02:20–03:30: quality 0.8M42 03:30–03:45: quality 0.7M42 03:45–04:00: quality 0.6M42 04:00–04:15: quality 0.5M42 04:15–04:25: quality 0.4observe M42 02:15–04:25M45M45 17:25–18:00: quality 0.1M45 18:00–18:35: quality 0.3M45 18:35–19:55: quality 0.6M45 19:55–22:55: quality 0.7M45 22:55–01:00: quality 0.8M45 01:00–01:30: quality 1.0M45 01:30–02:50: quality 0.9M45 02:50–03:35: quality 0.8M45 03:35–03:50: quality 0.7M45 03:50–04:05: quality 0.6M45 04:05–04:15: quality 0.5M45 04:15–04:25: quality 0.4observe M45 21:30–23:15NGC 7000NGC 7000 17:25–18:00: quality 0.1NGC 7000 18:00–18:35: quality 0.4NGC 7000 18:35–20:10: quality 0.7NGC 7000 20:10–21:55: quality 0.6NGC 7000 21:55–22:20: quality 0.5NGC 7000 22:20–22:45: quality 0.4NGC 7000 22:45–22:55: quality 0.3observe NGC 7000 18:00–19:45V1057 CygV1057 Cyg 17:25–18:00: quality 0.1V1057 Cyg 18:00–18:35: quality 0.4V1057 Cyg 18:35–20:10: quality 0.7V1057 Cyg 20:10–21:55: quality 0.6V1057 Cyg 21:55–22:20: quality 0.5V1057 Cyg 22:20–22:40: quality 0.4V1057 Cyg 22:40–22:55: quality 0.3observe V1057 Cyg 19:45–21:30M33M33 17:25–18:00: quality 0.1M33 18:00–18:35: quality 0.3M33 18:35–21:25: quality 0.6M33 21:25–01:00: quality 0.7M33 01:00–01:45: quality 0.8M33 01:45–02:00: quality 0.7M33 02:00–02:10: quality 0.6M33 02:10–02:25: quality 0.5M33 02:25–02:35: quality 0.4observe M33 23:15–01:00scheduleNGC 7000V1057 CygM45M33M31M4218:0020:0022:0000:0002:0004:0006:00

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 0.58
19:45–21:30 V1057 Cyg 1.75 0.63
21:30–23:15 M45 1.75 0.74
23:15–01:00 M33 1.75 0.67
01:00–02:15 M31 1.25 0.67
02:15–04:25 M42 2.17 0.71
04:25–07:40 — nothing worth pointing at — 3.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 82 unknown 18:35–01:50 (good) 89.6° at 19:40 44.4° 1.25
M42 Great Orion Nebula 88 unknown 21:45–03:50 (good) 42.9° at 00:35 79.6° 2.17
M45 Seven Sisters 98 unknown 19:00–03:55 (good) 72.5° at 22:45 57.7° 1.75
NGC 7000 North America Nebula 51 unknown 18:35–21:35 (good) 87.2° at 16:00 64.4° 1.75
V1057 Cyg 51 unknown 18:35–21:35 (good) 87.2° at 16:00 64.3° 1.75
M33 Triangulum Pinwheel 84 unknown 18:35–02:05 (good) 79.2° at 20:35 38.2° 1.75
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2040-12-11"

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"}.