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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, 19 December 2043 · astronomical night 18:33 → 06:03 (11.51 h) · Moon 82% (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 18:35–20:40: quality 1.0M31 20:40–22:10: quality 0.9M31 22:10–23:25: quality 0.8M31 23:25–00:50: quality 0.7M31 00:50–01:10: quality 0.6M31 01:10–01:30: quality 0.5M31 01:30–01:50: quality 0.4M31 01:50–01:55: quality 0.3observe M31 19:40–21:20M42M42 20:20–20:25: quality 0.4M42 20:25–20:40: quality 0.5M42 20:40–20:50: quality 0.4M42 20:50–21:15: quality 0.5M42 21:15–00:10: quality 0.6M42 00:10–02:40: quality 0.5M42 02:40–03:20: quality 0.4M42 03:20–03:45: quality 0.3M42 03:45–03:55: quality 0.2observe M42 01:35–03:15M45M45 17:25–18:00: quality 0.1M45 18:00–18:35: quality 0.4M45 18:35–19:40: quality 0.9M45 19:40–20:40: quality 1.0M45 20:40–22:30: quality 0.8M45 22:30–00:55: quality 0.7M45 00:55–02:25: quality 0.6M45 02:25–03:15: quality 0.5M45 03:15–03:35: quality 0.4M45 03:35–03:55: quality 0.3observe M45 23:55–01:35observe M45 03:15–03:45NGC 7000NGC 7000 17:25–18:00: quality 0.2NGC 7000 18:00–18:35: quality 0.5NGC 7000 18:35–19:00: quality 1.0NGC 7000 19:00–20:30: quality 0.9NGC 7000 20:30–21:00: quality 0.8NGC 7000 21:00–21:30: quality 0.7NGC 7000 21:30–21:50: quality 0.6NGC 7000 21:50–22:05: quality 0.5NGC 7000 22:05–22:25: 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 18:35–19:00: quality 1.0V1057 Cyg 19:00–20:30: quality 0.9V1057 Cyg 20:30–21:00: quality 0.8V1057 Cyg 21:00–21:30: quality 0.7V1057 Cyg 21:30–21:50: quality 0.6V1057 Cyg 21:50–22:05: quality 0.5V1057 Cyg 22:05–22:25: quality 0.4observe V1057 Cyg 21:20–22:15M33M33 17:25–17:45: quality 0.1M33 17:45–18:00: quality 0.2M33 18:00–18:35: quality 0.5M33 18:35–20:40: quality 1.0M33 20:40–22:15: quality 0.9M33 22:15–23:40: quality 0.8M33 23:40–01:00: quality 0.7M33 01:00–01:25: quality 0.6M33 01:25–01:40: quality 0.5M33 01:40–02:00: quality 0.4M33 02:00–02:05: quality 0.3observe M33 22:15–23:55scheduleNGC 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 0.79
19:40–21:20 M31 1.67 0.95
21:20–22:15 V1057 Cyg 0.92 0.56
22:15–23:55 M33 1.67 0.79
23:55–01:35 M45 1.67 0.66
01:35–03:15 M42 1.67 0.45
03:15–03:45 M45 0.5 0.37
03:45–07:45 — nothing worth pointing at — 4.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:35–01:00 (good) 89.6° at 19:15 104.7° 1.67
M42 Great Orion Nebula 56 unknown 20:20–03:30 (marginal) 42.9° at 00:05 61.2° 1.67
M45 Seven Sisters 100 unknown 18:35–01:35 (good) 72.6° at 22:15 77.7° 2.17
NGC 7000 North America Nebula 82 unknown 18:35–21:40 (good) 87.2° at 15:30 117.0° 1.67
V1057 Cyg 82 unknown 18:35–21:40 (good) 87.3° at 15:30 117.0° 0.92
M33 Triangulum Pinwheel 100 unknown 18:35–01:15 (good) 79.2° at 20:05 102.5° 1.67
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2043-12-19"

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"}.