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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, 04 December 2026 · astronomical night 18:30 → 05:52 (11.38 h) · Moon 16% (waning crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:25–17:30: quality 0.1M31 17:30–18:00: quality 0.2M31 18:00–18:35: quality 0.5M31 18:35–23:35: quality 1.0M31 23:35–01:05: quality 0.9M31 01:05–01:55: quality 0.8M31 01:55–02:10: quality 0.7M31 02:10–02:30: quality 0.6M31 02:30–02:45: quality 0.5M31 02:45–02:55: quality 0.4observe M31 21:40–23:30M42M42 21:15–21:25: quality 0.4M42 21:25–21:40: quality 0.5M42 21:40–21:55: quality 0.6M42 21:55–22:15: quality 0.7M42 22:15–23:25: quality 0.8M42 23:25–02:45: quality 0.9M42 02:45–03:55: quality 0.8M42 03:55–04:10: quality 0.7M42 04:10–04:30: quality 0.6M42 04:30–04:45: quality 0.5M42 04:45–04:55: quality 0.4observe M42 03:10–04:55M45M45 17:40–18:00: quality 0.1M45 18:00–18:20: quality 0.3M45 18:20–18:35: quality 0.4M45 18:35–19:15: quality 0.8M45 19:15–20:35: quality 0.9M45 20:35–01:55: quality 1.0M45 01:55–03:20: quality 0.9M45 03:20–04:05: quality 0.8M45 04:05–04:15: quality 0.7M45 04:15–04:30: quality 0.6M45 04:30–04:45: quality 0.5M45 04:45–04:50: quality 0.4observe M45 01:20–03:10NGC 7000NGC 7000 17:25–18:00: quality 0.2NGC 7000 18:00–18:35: quality 0.5NGC 7000 18:35–19:55: quality 1.0NGC 7000 19:55–21:25: quality 0.9NGC 7000 21:25–22:20: quality 0.8NGC 7000 22:20–22:40: quality 0.7NGC 7000 22:40–22:55: quality 0.6NGC 7000 22:55–23:15: quality 0.5NGC 7000 23:15–23:20: quality 0.4observe NGC 7000 18:00–19:50V1057 CygV1057 Cyg 17:25–18:00: quality 0.2V1057 Cyg 18:00–18:35: quality 0.5V1057 Cyg 18:35–19:55: quality 1.0V1057 Cyg 19:55–21:25: quality 0.9V1057 Cyg 21:25–22:20: quality 0.8V1057 Cyg 22:20–22:40: quality 0.7V1057 Cyg 22:40–22:55: quality 0.6V1057 Cyg 22:55–23:15: quality 0.5V1057 Cyg 23:15–23:20: quality 0.4observe V1057 Cyg 19:50–21:40M33M33 17:25–18:00: quality 0.1M33 18:00–18:35: quality 0.5M33 18:35–00:05: quality 1.0M33 00:05–01:25: quality 0.9M33 01:25–02:15: quality 0.8M33 02:15–02:25: quality 0.7M33 02:25–02:40: quality 0.6M33 02:40–02:55: quality 0.5M33 02:55–03:05: quality 0.4observe M33 23:30–01:20scheduleNGC 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
18:00–19:50 NGC 7000 1.83 0.83
19:50–21:40 V1057 Cyg 1.83 0.9
21:40–23:30 M31 1.83 0.99
23:30–01:20 M33 1.83 0.92
01:20–03:10 M45 1.83 0.93
03:10–04:55 M42 1.75 0.67
04:55–07:35 — nothing worth pointing at — 2.67

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:35–02:20 (good) 89.7° at 20:10 151.1° 1.83
M42 Great Orion Nebula 89 unknown 21:50–04:20 (good) 42.9° at 01:05 116.6° 1.75
M45 Seven Sisters 100 unknown 18:35–04:25 (good) 72.5° at 23:15 147.0° 1.83
NGC 7000 North America Nebula 100 unknown 18:35–22:45 (good) 87.2° at 16:25 115.5° 1.83
V1057 Cyg 100 unknown 18:35–22:45 (good) 87.3° at 16:25 115.5° 1.83
M33 Triangulum Pinwheel 100 unknown 18:35–02:35 (good) 79.1° at 21:00 163.8° 1.83
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-12-04"

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"}.