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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 Sunday, 21 January 2029 · astronomical night 19:00 → 06:04 (11.08 h) · Moon 42% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:55–18:30: quality 0.1M31 18:30–19:05: quality 0.3M31 19:05–21:45: quality 0.7M31 21:45–22:55: quality 0.6M31 22:55–23:15: quality 0.5M31 23:15–23:35: quality 0.4M31 23:35–23:40: quality 0.3observe M31 22:40–23:30M42M42 18:10–18:30: quality 0.1M42 18:30–18:40: quality 0.2M42 18:40–19:05: quality 0.3M42 19:05–19:25: quality 0.6M42 19:25–22:25: quality 0.7M42 22:25–23:00: quality 0.8M42 23:00–00:15: quality 0.7M42 00:15–00:45: quality 0.8M42 00:45–01:05: quality 0.7M42 01:05–01:20: quality 0.6M42 01:20–01:35: quality 0.5M42 01:35–01:40: quality 0.4observe M42 23:30–01:40M45M45 17:55–18:30: quality 0.1M45 18:30–19:05: quality 0.4M45 19:05–20:50: quality 0.7M45 20:50–23:05: quality 0.8M45 23:05–00:15: quality 0.7M45 00:15–00:55: quality 0.8M45 00:55–01:10: quality 0.7M45 01:10–01:20: quality 0.6M45 01:20–01:35: quality 0.5M45 01:35–01:40: quality 0.4observe M45 21:25–22:40NGC 7000NGC 7000 17:55–18:30: quality 0.1NGC 7000 18:30–19:05: quality 0.3NGC 7000 19:05–19:20: quality 0.6NGC 7000 19:20–19:40: quality 0.5NGC 7000 19:40–20:05: quality 0.4NGC 7000 20:05–20:10: quality 0.3NGC 7000 06:20–06:40: quality 0.2NGC 7000 06:40–07:15: quality 0.1observe NGC 7000 18:30–19:45V1057 CygV1057 Cyg 17:55–18:30: quality 0.1V1057 Cyg 18:30–19:05: quality 0.3V1057 Cyg 19:05–19:20: quality 0.6V1057 Cyg 19:20–19:40: quality 0.5V1057 Cyg 19:40–20:05: quality 0.4V1057 Cyg 20:05–20:10: quality 0.3V1057 Cyg 06:25–06:40: quality 0.2V1057 Cyg 06:40–07:15: quality 0.1observe V1057 Cyg 19:45–20:10M33M33 17:55–18:30: quality 0.1M33 18:30–19:05: quality 0.3M33 19:05–22:25: quality 0.7M33 22:25–23:10: quality 0.6M33 23:10–23:30: quality 0.5M33 23:30–23:50: quality 0.4observe M33 20:10–21:25scheduleNGC 7000M33M45M31M4218:0020:0022:0000:0002:0004:0006:00

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
17:20–18:30 — nothing worth pointing at — 1.17
18:30–19:45 NGC 7000 1.25 0.43
19:45–20:10 V1057 Cyg 0.42 0.38
20:10–21:25 M33 1.25 0.7
21:25–22:40 M45 1.25 0.77
22:40–23:30 M31 0.83 0.5
23:30–01:40 M42 2.17 0.69
01:40–07:45 — nothing worth pointing at — 6.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 56 unknown 19:05–22:45 (good) 89.7° at 17:00 28.6° 0.83
M42 Great Orion Nebula 82 unknown 19:05–01:10 (good) 42.9° at 21:50 67.1° 2.17
M45 Seven Sisters 84 unknown 19:05–01:15 (good) 72.5° at 20:05 37.0° 1.25
NGC 7000 North America Nebula 13 unknown 19:05–19:10 (good) 87.2° at 13:15 62.2° 1.25
V1057 Cyg 13 unknown 19:05–19:10 (good) 87.3° at 13:15 62.2° 0.42
M33 Triangulum Pinwheel 60 unknown 19:05–23:00 (good) 79.1° at 17:50 17.5° 1.25
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2029-01-21"

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"}.