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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, 30 December 2026 · astronomical night 18:39 → 06:07 (11.47 h) · Moon 48% (last quarter) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:35–18:10: quality 0.2M31 18:10–18:40: quality 0.5M31 18:40–21:55: quality 1.0M31 21:55–23:20: quality 0.9M31 23:20–00:15: quality 0.8M31 00:15–00:30: quality 0.7M31 00:30–00:45: quality 0.6M31 00:45–01:00: quality 0.5M31 01:00–01:10: quality 0.4observe M31 19:40–21:10M42M42 19:35–19:45: quality 0.4M42 19:45–20:00: quality 0.5M42 20:00–20:15: quality 0.6M42 20:15–20:30: quality 0.7M42 20:30–21:40: quality 0.8M42 21:40–00:55: quality 0.9M42 00:55–01:50: quality 0.8M42 01:50–02:20: quality 0.7M42 02:20–02:40: quality 0.6M42 02:40–02:55: quality 0.5M42 02:55–03:10: quality 0.4observe M42 00:10–03:10M45M45 17:35–18:10: quality 0.1M45 18:10–18:15: quality 0.4M45 18:15–18:40: quality 0.5M45 18:40–18:55: quality 0.9M45 18:55–00:15: quality 1.0M45 00:15–01:05: quality 0.9M45 01:05–02:15: quality 0.8M45 02:15–02:30: quality 0.7M45 02:30–02:45: quality 0.6M45 02:45–03:00: quality 0.5M45 03:00–03:10: quality 0.4observe M45 22:40–00:10NGC 7000NGC 7000 17:35–18:10: quality 0.1NGC 7000 18:10–18:40: quality 0.5NGC 7000 18:40–19:45: quality 0.9NGC 7000 19:45–20:40: quality 0.8NGC 7000 20:40–20:55: quality 0.7NGC 7000 20:55–21:15: quality 0.6NGC 7000 21:15–21:30: quality 0.5NGC 7000 21:30–21:40: quality 0.4V1057 CygV1057 Cyg 17:35–18:10: quality 0.1V1057 Cyg 18:10–18:40: quality 0.5V1057 Cyg 18:40–19:45: quality 0.9V1057 Cyg 19:45–20:40: quality 0.8V1057 Cyg 20:40–20:55: quality 0.7V1057 Cyg 20:55–21:15: quality 0.6V1057 Cyg 21:15–21:30: quality 0.5V1057 Cyg 21:30–21:40: quality 0.4observe V1057 Cyg 18:10–19:40M33M33 17:35–18:10: quality 0.2M33 18:10–18:40: quality 0.5M33 18:40–22:20: quality 1.0M33 22:20–23:45: quality 0.9M33 23:45–00:30: quality 0.8M33 00:30–00:45: quality 0.7M33 00:45–00:55: quality 0.6M33 00:55–01:10: quality 0.5M33 01:10–01:20: quality 0.4observe M33 21:10–22:40scheduleV1057 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
16:55–18:10 — nothing worth pointing at — 1.25
18:10–19:40 V1057 Cyg 1.5 0.75
19:40–21:10 M31 1.5 1.0
21:10–22:40 M33 1.5 0.98
22:40–00:10 M45 1.5 0.99
00:10–03:10 M42 3.0 0.72
03:10–07:50 — nothing worth pointing at — 4.67

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:40–00:35 (good) 89.6° at 18:30 146.6° 1.5
M42 Great Orion Nebula 89 unknown 20:05–02:30 (good) 42.9° at 23:20 103.7° 3.0
M45 Seven Sisters 100 unknown 18:40–02:40 (good) 72.5° at 21:30 131.3° 1.5
NGC 7000 North America Nebula 60 unknown 18:40–21:05 (good) 87.3° at 14:45 121.0° 0.0
V1057 Cyg 60 unknown 18:40–21:05 (good) 87.3° at 14:45 121.0° 1.5
M33 Triangulum Pinwheel 100 unknown 18:40–00:50 (good) 79.1° at 19:20 153.3° 1.5

Left out


💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-12-30"

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"}.