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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, 13 January 2036 · astronomical night 18:51 → 06:07 (11.28 h) · Moon 100% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:45–18:20: quality 0.1M31 18:20–18:55: quality 0.4M31 18:55–20:05: quality 0.8M31 20:05–21:30: quality 0.7M31 21:30–23:05: quality 0.6M31 23:05–23:35: quality 0.5M31 23:35–23:55: quality 0.4M31 23:55–00:15: quality 0.3observe M31 20:45–22:00M42M42 18:40–18:55: quality 0.1M42 18:55–19:20: quality 0.3M42 19:20–22:05: quality 0.4M42 22:05–01:20: quality 0.3M42 01:20–02:10: quality 0.2M42 02:10–02:15: quality 0.1observe M42 23:15–23:40M45M45 17:45–18:20: quality 0.1M45 18:20–18:55: quality 0.3M45 18:55–20:50: quality 0.6M45 20:50–23:10: quality 0.5M45 23:10–01:25: quality 0.4M45 01:25–01:55: quality 0.3M45 01:55–02:15: quality 0.2observe M45 23:40–01:40NGC 7000NGC 7000 17:45–18:20: quality 0.1NGC 7000 18:20–18:55: quality 0.4NGC 7000 18:55–19:45: quality 0.7NGC 7000 19:45–20:05: quality 0.6NGC 7000 20:05–20:25: quality 0.5NGC 7000 20:25–20:45: quality 0.4NGC 7000 06:55–07:20: quality 0.1observe NGC 7000 18:20–19:35V1057 CygV1057 Cyg 17:45–18:20: quality 0.1V1057 Cyg 18:20–18:55: quality 0.4V1057 Cyg 18:55–19:45: quality 0.7V1057 Cyg 19:45–20:05: quality 0.6V1057 Cyg 20:05–20:25: quality 0.5V1057 Cyg 20:25–20:45: quality 0.4V1057 Cyg 06:55–07:20: quality 0.1observe V1057 Cyg 19:35–20:45M33M33 17:45–18:20: quality 0.1M33 18:20–18:55: quality 0.4M33 18:55–19:15: quality 0.8M33 19:15–21:25: quality 0.7M33 21:25–22:50: quality 0.6M33 22:50–23:45: quality 0.5M33 23:45–00:05: quality 0.4M33 00:05–00:25: quality 0.3observe M33 22:00–23:15scheduleNGC 7000V1057 CygM31M33M4518:0020:0022:0000:0002:0004:0006:00

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
17:10–18:20 — nothing worth pointing at — 1.17
18:20–19:35 NGC 7000 1.25 0.57
19:35–20:45 V1057 Cyg 1.17 0.53
20:45–22:00 M31 1.25 0.66
22:00–23:15 M33 1.25 0.56
23:15–23:40 M42 0.42 0.31
23:40–01:40 M45 2.0 0.38
01:40–07:50 — nothing worth pointing at — 6.17

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 71 unknown 18:55–22:15 (good) 89.8° at 17:35 93.1° 1.25
M42 Great Orion Nebula 25 unknown 19:00–23:40 (marginal) 42.9° at 22:25 44.0° 0.42
M45 Seven Sisters 59 unknown 18:55–19:45 (good) 72.5° at 20:40 60.5° 2.0
NGC 7000 North America Nebula 27 unknown 18:55–19:55 (good) 87.2° at 13:50 116.7° 1.25
V1057 Cyg 27 unknown 18:55–19:55 (good) 87.3° at 13:50 116.7° 1.17
M33 Triangulum Pinwheel 69 unknown 18:55–22:05 (good) 79.1° at 18:25 87.7° 1.25
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2036-01-13"

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"}.