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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, 02 December 2025 · astronomical night 18:30 → 05:51 (11.35 h) · Moon 94% (waxing gibbous) · weather: ERA5 history

M31M31 22:00–23:00: quality 0.1M31 23:00–00:00: quality 0.3M31 00:00–01:00: quality 0.1M31 01:00–02:00: quality 0.2M31 02:00–02:30: quality 0.3M31 02:30–03:00: quality 0.2M42M42 22:00–23:00: quality 0.1M42 23:00–23:35: quality 0.3M42 23:35–00:00: quality 0.4M42 00:00–01:00: quality 0.2M42 01:00–02:00: quality 0.3M42 02:00–04:10: quality 0.5M42 04:10–04:40: quality 0.4M42 04:40–05:00: quality 0.3observe M42 23:00–00:00observe M42 04:40–04:50M45M45 22:00–23:00: quality 0.1M45 23:00–00:00: quality 0.3M45 00:00–02:00: quality 0.2M45 02:00–04:30: quality 0.4M45 04:30–04:55: quality 0.3M45 04:55–05:00: quality 0.2observe M45 02:25–04:40NGC 7000NGC 7000 22:00–23:00: quality 0.1NGC 7000 23:00–23:15: quality 0.3NGC 7000 23:15–23:30: quality 0.2V1057 CygV1057 Cyg 22:00–23:00: quality 0.1V1057 Cyg 23:00–23:15: quality 0.3V1057 Cyg 23:15–23:30: quality 0.2M33M33 22:00–23:00: quality 0.1M33 23:00–00:00: quality 0.3M33 00:00–01:00: quality 0.1M33 01:00–02:00: quality 0.2M33 02:00–02:45: quality 0.3M33 02:45–03:10: quality 0.2observe M33 02:00–02:25scheduleM42M4518:0020:0022:0000:0002:0004:0006:00

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
16:50–23:00 — nothing worth pointing at — 6.17
23:00–00:00 M42 1.0 0.35
00:00–02:00 — nothing worth pointing at — 2.0
02:00–02:25 M33 0.42 0.32
02:25–04:40 M45 2.25 0.4
04:40–04:50 M42 0.17 0.33
04:50–07:35 — nothing worth pointing at — 2.75

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 27 9 02:00–02:10 (marginal) 89.5° at 20:20 31.9° 0.0
M42 Great Orion Nebula 37 27 02:00–04:50 (marginal) 42.9° at 01:10 51.5° 1.17
M45 Seven Sisters 37 20 02:00–04:40 (marginal) 72.5° at 23:20 17.9° 2.25
NGC 7000 North America Nebula 39 4 — 87.3° at 16:35 71.9° 0.0
V1057 Cyg 39 3 — 87.3° at 16:35 71.9° 0.0
M33 Triangulum Pinwheel 26 10 02:00–02:25 (marginal) 79.1° at 21:10 17.3° 0.42

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2025-12-02"

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"}.