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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 Friday, 09 December 2033 · astronomical night 18:30 → 05:57 (11.45 h) · Moon 84% (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 18:35–20:35: quality 1.0M31 20:35–21:25: quality 0.9M31 21:25–23:30: quality 0.8M31 23:30–00:55: quality 0.7M31 00:55–01:40: quality 0.6M31 01:40–02:00: quality 0.5M31 02:00–02:20: quality 0.4M31 02:20–02:30: quality 0.3observe M31 21:30–23:15M42M42 20:55–21:15: quality 0.3M42 21:15–21:40: quality 0.4M42 21:40–01:00: quality 0.5M42 01:00–03:35: quality 0.4M42 03:35–04:10: quality 0.3M42 04:10–04:30: quality 0.2observe M42 02:45–03:55M45M45 17:25–18:00: quality 0.1M45 18:00–18:35: quality 0.4M45 18:35–18:55: quality 0.8M45 18:55–20:15: quality 0.9M45 20:15–20:35: quality 1.0M45 20:35–21:10: quality 0.8M45 21:10–23:40: quality 0.7M45 23:40–01:50: quality 0.6M45 01:50–03:40: quality 0.5M45 03:40–04:05: quality 0.4M45 04:05–04:25: quality 0.3M45 04:25–04:30: quality 0.2observe M45 01:00–02:45observe M45 03:55–04:15NGC 7000NGC 7000 17:25–18:00: quality 0.2NGC 7000 18:00–18:35: quality 0.5NGC 7000 18:35–19:35: quality 1.0NGC 7000 19:35–20:35: quality 0.9NGC 7000 20:35–21:40: quality 0.8NGC 7000 21:40–22:10: quality 0.7NGC 7000 22:10–22:25: quality 0.6NGC 7000 22:25–22:45: quality 0.5NGC 7000 22:45–23:00: quality 0.4observe NGC 7000 18:00–19:45V1057 CygV1057 Cyg 17:25–18:00: quality 0.2V1057 Cyg 18:00–18:35: quality 0.5V1057 Cyg 18:35–19:35: quality 1.0V1057 Cyg 19:35–20:35: quality 0.9V1057 Cyg 20:35–21:40: quality 0.8V1057 Cyg 21:40–22:10: quality 0.7V1057 Cyg 22:10–22:25: quality 0.6V1057 Cyg 22:25–22:45: quality 0.5V1057 Cyg 22:45–23:00: quality 0.4observe V1057 Cyg 19:45–21:30M33M33 17:25–18:00: quality 0.1M33 18:00–18:35: quality 0.5M33 18:35–20:35: quality 1.0M33 20:35–20:45: quality 0.9M33 20:45–23:30: quality 0.8M33 23:30–00:50: quality 0.7M33 00:50–01:55: quality 0.6M33 01:55–02:10: quality 0.5M33 02:10–02:30: quality 0.4M33 02:30–02:45: quality 0.3observe M33 23:15–01:00scheduleNGC 7000V1057 CygM31M33M45M4218:0020:0022:0000:0002:0004:0006:00

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 0.82
19:45–21:30 V1057 Cyg 1.75 0.85
21:30–23:15 M31 1.75 0.82
23:15–01:00 M33 1.75 0.7
01:00–02:45 M45 1.75 0.55
02:45–03:55 M42 1.17 0.36
03:55–04:15 M45 0.33 0.34
04:15–07:40 — nothing worth pointing at — 3.42

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:35–01:30 (good) 89.7° at 19:50 98.7° 1.75
M42 Great Orion Nebula 41 unknown 21:00–03:55 (marginal) 42.9° at 00:40 46.8° 1.17
M45 Seven Sisters 97 unknown 18:35–01:00 (good) 72.5° at 22:55 66.0° 2.08
NGC 7000 North America Nebula 98 unknown 18:35–22:15 (good) 87.2° at 16:05 120.7° 1.75
V1057 Cyg 98 unknown 18:35–22:15 (good) 87.3° at 16:05 120.7° 1.75
M33 Triangulum Pinwheel 100 unknown 18:35–01:35 (good) 79.1° at 20:40 93.4° 1.75
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2033-12-09"

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"}.