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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, 21 January 2037 · astronomical night 19:00 → 06:04 (11.07 h) · Moon 25% (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 0.4M31 19:05–20:15: quality 0.9M31 20:15–22:45: quality 0.8M31 22:45–23:00: quality 0.7M31 23:00–23:15: quality 0.6M31 23:15–23:35: quality 0.5M31 23:35–23:40: quality 0.4observe M31 19:45–21:00M42M42 18:05–18:30: quality 0.1M42 18:30–19:05: quality 0.3M42 19:05–19:30: quality 0.7M42 19:30–22:10: quality 0.8M42 22:10–23:35: quality 0.9M42 23:35–00:45: 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 19:05–22:10: quality 0.9M45 22:10–22:45: quality 1.0M45 22:45–00:10: quality 0.9M45 00:10–00:55: 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 21:00–22:15NGC 7000NGC 7000 17:55–18:30: quality 0.1NGC 7000 18:30–19:05: quality 0.4NGC 7000 19:05–19:15: quality 0.7NGC 7000 19:15–19:35: quality 0.6NGC 7000 19:35–19:55: quality 0.5NGC 7000 19:55–20:10: quality 0.4NGC 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 0.4V1057 Cyg 19:05–19:15: quality 0.7V1057 Cyg 19:15–19:35: quality 0.6V1057 Cyg 19:35–19:55: quality 0.5V1057 Cyg 19:55–20:10: quality 0.4V1057 Cyg 06:25–06:40: quality 0.2V1057 Cyg 06:40–07:15: quality 0.1M33M33 17:55–18:30: quality 0.1M33 18:30–19:05: quality 0.4M33 19:05–20:45: quality 0.9M33 20:45–22:10: quality 0.8M33 22:10–22:15: quality 0.9M33 22:15–23:05: quality 0.8M33 23:05–23:15: quality 0.7M33 23:15–23:30: quality 0.6M33 23:30–23:45: quality 0.5M33 23:45–23:55: quality 0.4observe M33 22:15–23:30scheduleNGC 7000M31M45M33M4218:0020:0022:0000:0002:0004:0006:00

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 0.49
19:45–21:00 M31 1.25 0.84
21:00–22:15 M45 1.25 0.92
22:15–23:30 M33 1.25 0.76
23:30–01:40 M42 2.17 0.73
01:40–07:45 — nothing worth pointing at — 6.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 85 unknown 19:05–23:10 (good) 89.8° at 17:00 44.8° 1.25
M42 Great Orion Nebula 89 unknown 19:05–01:10 (good) 42.9° at 21:50 79.8° 2.17
M45 Seven Sisters 99 unknown 19:05–01:15 (good) 72.5° at 20:05 58.0° 1.25
NGC 7000 North America Nebula 17 unknown 19:05–19:25 (good) 87.2° at 13:15 64.5° 1.25
V1057 Cyg 17 unknown 19:05–19:25 (good) 87.3° at 13:15 64.4° 0.0
M33 Triangulum Pinwheel 87 unknown 19:05–23:25 (good) 79.2° at 17:50 38.6° 1.25

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2037-01-21"

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"}.