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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 Saturday, 04 December 2027 · astronomical night 18:30 → 05:52 (11.38 h) · Moon 38% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:25–18:00: quality 0.1M31 18:00–18:35: quality 0.4M31 18:35–20:05: quality 0.8M31 20:05–22:45: quality 0.9M31 22:45–23:35: quality 1.0M31 23:35–01:05: quality 0.9M31 01:05–01:55: quality 0.8M31 01:55–02:15: quality 0.7M31 02:15–02:30: quality 0.6M31 02:30–02:45: quality 0.5M31 02:45–02:55: quality 0.4observe M31 23:30–01:20M42M42 21:20–21:30: quality 0.4M42 21:30–21:45: quality 0.5M42 21:45–22:05: quality 0.6M42 22:05–22:20: quality 0.7M42 22:20–23:25: quality 0.8M42 23:25–02:50: quality 0.9M42 02:50–04:00: quality 0.8M42 04:00–04:15: quality 0.7M42 04:15–04:30: quality 0.6M42 04:30–04:45: quality 0.5M42 04:45–04:55: quality 0.4observe M42 01:20–04:55M45M45 17:40–18:00: quality 0.1M45 18:00–18:05: quality 0.2M45 18:05–18:35: quality 0.3M45 18:35–19:05: quality 0.7M45 19:05–20:30: quality 0.8M45 20:30–22:45: quality 0.9M45 22:45–02:00: quality 1.0M45 02:00–03:20: quality 0.9M45 03:20–04:05: quality 0.8M45 04:05–04:20: quality 0.7M45 04:20–04:35: quality 0.6M45 04:35–04:45: quality 0.5M45 04:45–04:55: quality 0.4observe M45 21:40–23:30NGC 7000NGC 7000 17:25–18:00: quality 0.1NGC 7000 18:00–18:35: quality 0.4NGC 7000 18:35–20:55: quality 0.8NGC 7000 20:55–22:25: quality 0.7NGC 7000 22:25–22:55: quality 0.6NGC 7000 22:55–23:15: quality 0.5NGC 7000 23:15–23:25: quality 0.4observe NGC 7000 18:00–19:50V1057 CygV1057 Cyg 17:25–18:00: quality 0.1V1057 Cyg 18:00–18:35: quality 0.4V1057 Cyg 18:35–20:55: quality 0.8V1057 Cyg 20:55–22:25: quality 0.7V1057 Cyg 22:25–22:55: quality 0.6V1057 Cyg 22:55–23:15: quality 0.5V1057 Cyg 23:15–23:25: quality 0.4M33M33 17:25–18:00: quality 0.1M33 18:00–18:35: quality 0.4M33 18:35–19:45: quality 0.8M33 19:45–22:45: quality 0.9M33 22:45–00:05: quality 1.0M33 00:05–01:25: quality 0.9M33 01:25–02:15: quality 0.8M33 02:15–02:30: quality 0.7M33 02:30–02:40: quality 0.6M33 02:40–02:55: quality 0.5M33 02:55–03:05: quality 0.4observe M33 19:50–21:40scheduleNGC 7000M33M45M31M4218:0020:0022:0000:0002:0004:0006:00

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 0.69
19:50–21:40 M33 1.83 0.86
21:40–23:30 M45 1.83 0.96
23:30–01:20 M31 1.83 0.89
01:20–04:55 M42 3.58 0.78
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) 89.5° at 20:10 63.5° 1.83
M42 Great Orion Nebula 89 unknown 21:55–04:25 (good) 42.9° at 01:05 112.5° 3.58
M45 Seven Sisters 100 unknown 18:35–04:25 (good) 72.5° at 23:15 91.2° 1.83
NGC 7000 North America Nebula 78 unknown 18:35–22:35 (good) 87.2° at 16:30 56.0° 1.83
V1057 Cyg 78 unknown 18:35–22:35 (good) 87.3° at 16:30 55.9° 0.0
M33 Triangulum Pinwheel 100 unknown 18:35–02:35 (good) 79.1° at 21:05 65.6° 1.83

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-12-04"

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"}.