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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, 15 December 2038 · astronomical night 18:31 → 06:01 (11.49 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 18:35–20:25: quality 1.0M31 20:25–21:25: quality 0.9M31 21:25–23:15: quality 0.8M31 23:15–00:35: quality 0.7M31 00:35–01:20: quality 0.6M31 01:20–01:40: quality 0.5M31 01:40–02:00: quality 0.4M31 02:00–02:10: quality 0.3observe M31 19:40–21:20M42M42 20:35–20:45: quality 0.3M42 20:45–21:10: quality 0.4M42 21:10–21:40: quality 0.5M42 21:40–22:15: quality 0.6M42 22:15–02:00: quality 0.5M42 02:00–03:25: quality 0.4M42 03:25–03:55: quality 0.3M42 03:55–04:10: quality 0.2observe M42 01:55–03:40M45M45 17:25–18:00: quality 0.1M45 18:00–18:35: quality 0.4M45 18:35–19:55: quality 0.9M45 19:55–20:25: quality 1.0M45 20:25–21:30: quality 0.8M45 21:30–00:20: quality 0.7M45 00:20–01:55: quality 0.6M45 01:55–03:20: quality 0.5M45 03:20–03:45: quality 0.4M45 03:45–04:05: quality 0.3M45 04:05–04:10: quality 0.2observe M45 00:15–01:55observe M45 03:40–03:55NGC 7000NGC 7000 17:25–18:00: quality 0.2NGC 7000 18:00–18:35: quality 0.5NGC 7000 18:35–19:15: quality 1.0NGC 7000 19:15–20:25: quality 0.9NGC 7000 20:25–21:05: quality 0.8NGC 7000 21:05–21:45: quality 0.7NGC 7000 21:45–22:00: quality 0.6NGC 7000 22:00–22:20: quality 0.5NGC 7000 22:20–22:40: quality 0.4observe NGC 7000 18:00–19:40V1057 CygV1057 Cyg 17:25–18:00: quality 0.2V1057 Cyg 18:00–18:35: quality 0.5V1057 Cyg 18:35–19:15: quality 1.0V1057 Cyg 19:15–20:25: quality 0.9V1057 Cyg 20:25–21:05: quality 0.8V1057 Cyg 21:05–21:45: quality 0.7V1057 Cyg 21:45–22:00: quality 0.6V1057 Cyg 22:00–22:20: quality 0.5V1057 Cyg 22:20–22:40: quality 0.4observe V1057 Cyg 21:20–22:35M33M33 17:25–18:00: quality 0.1M33 18:00–18:35: quality 0.5M33 18:35–20:25: quality 1.0M33 20:25–21:00: quality 0.9M33 21:00–23:25: quality 0.8M33 23:25–00:45: quality 0.7M33 00:45–01:35: quality 0.6M33 01:35–01:50: quality 0.5M33 01:50–02:10: quality 0.4M33 02:10–02:20: quality 0.3observe M33 22:35–00:15scheduleNGC 7000M31V1057 CygM33M45M4218:0020:0022:0000:0002:0004:0006:00

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
18:00–19:40 NGC 7000 1.67 0.8
19:40–21:20 M31 1.67 0.92
21:20–22:35 V1057 Cyg 1.25 0.57
22:35–00:15 M33 1.67 0.75
00:15–01:55 M45 1.67 0.6
01:55–03:40 M42 1.75 0.41
03:40–03:55 M45 0.25 0.33
03:55–07:45 — nothing worth pointing at — 3.83

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:35–01:10 (good) 89.6° at 19:30 99.5° 1.67
M42 Great Orion Nebula 48 unknown 20:35–03:40 (marginal) 42.9° at 00:20 56.7° 1.75
M45 Seven Sisters 98 unknown 18:35–01:10 (good) 72.5° at 22:30 71.7° 1.92
NGC 7000 North America Nebula 88 unknown 18:35–21:55 (good) 87.2° at 15:45 115.1° 1.67
V1057 Cyg 88 unknown 18:35–21:50 (good) 87.3° at 15:45 115.2° 1.25
M33 Triangulum Pinwheel 100 unknown 18:35–01:25 (good) 79.2° at 20:20 96.8° 1.67

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2038-12-15"

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"}.