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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 Wednesday, 08 December 2027 · astronomical night 18:30 → 05:55 (11.43 h) · Moon 75% (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 0.2M31 18:35–19:15: quality 0.5M31 19:15–20:50: quality 0.4M31 20:50–01:50: quality 0.5M31 01:50–02:20: quality 0.4M31 02:20–02:40: quality 0.3observe M31 01:20–02:30M42M42 21:05–21:25: quality 0.3M42 21:25–21:45: quality 0.4M42 21:45–22:25: quality 0.5M42 22:25–00:35: quality 0.6M42 00:35–02:50: quality 0.7M42 02:50–03:40: quality 0.8M42 03:40–04:00: quality 0.7M42 04:00–04:15: quality 0.6M42 04:15–04:30: quality 0.5M42 04:30–04:40: quality 0.4observe M42 23:30–01:20observe M42 02:45–04:40M45M45 17:55–18:00: quality 0.1M45 18:00–18:35: quality 0.2M45 18:35–19:25: quality 0.4M45 19:25–22:40: quality 0.5M45 22:40–02:50: quality 0.6M45 02:50–03:05: quality 0.9M45 03:05–03:50: quality 0.8M45 03:50–04:05: quality 0.7M45 04:05–04:15: quality 0.6M45 04:15–04:30: quality 0.5M45 04:30–04:40: quality 0.4observe M45 21:40–23:30NGC 7000NGC 7000 17:25–18:00: quality 0.1NGC 7000 18:00–18:35: quality 0.3NGC 7000 18:35–20:05: quality 0.6NGC 7000 20:05–22:10: quality 0.5NGC 7000 22:10–22:40: quality 0.4NGC 7000 22:40–23:05: quality 0.3observe NGC 7000 18:00–19:50V1057 CygV1057 Cyg 17:25–18:00: quality 0.1V1057 Cyg 18:00–18:35: quality 0.3V1057 Cyg 18:35–20:05: quality 0.6V1057 Cyg 20:05–22:10: quality 0.5V1057 Cyg 22:10–22:40: quality 0.4V1057 Cyg 22:40–23:05: quality 0.3observe V1057 Cyg 19:50–21:40M33M33 17:25–18:00: quality 0.1M33 18:00–18:35: quality 0.2M33 18:35–19:10: quality 0.5M33 19:10–20:55: quality 0.4M33 20:55–02:10: quality 0.5M33 02:10–02:30: quality 0.4M33 02:30–02:50: quality 0.3observe M33 02:30–02:45scheduleNGC 7000V1057 CygM45M42M31M4218:0020:0022:0000:0002:0004:0006:00

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 0.5
19:50–21:40 V1057 Cyg 1.83 0.53
21:40–23:30 M45 1.83 0.55
23:30–01:20 M42 1.83 0.64
01:20–02:30 M31 1.17 0.42
02:30–02:45 M33 0.25 0.33
02:45–04:40 M42 1.92 0.69
04:40–07:40 — nothing worth pointing at — 3.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 49 unknown 18:35–02:30 (marginal) 89.6° at 19:55 30.2° 1.17
M42 Great Orion Nebula 84 unknown 23:25–04:05 (good) 42.9° at 00:50 71.7° 3.75
M45 Seven Sisters 86 unknown 00:00–04:10 (good) 72.5° at 23:00 42.7° 1.83
NGC 7000 North America Nebula 38 unknown 18:35–19:00 (good) 87.2° at 16:10 60.2° 1.83
V1057 Cyg 38 unknown 18:35–18:55 (good) 87.3° at 16:10 60.1° 1.83
M33 Triangulum Pinwheel 52 unknown 18:35–02:45 (marginal) 79.1° at 20:45 21.5° 0.25

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-12-08"

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"}.