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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, 16 October 2030 · astronomical night 20:10 → 06:02 (9.87 h) · Moon 75% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:10–19:40: quality 0.1M31 19:40–20:15: quality 0.4M31 20:15–21:05: quality 0.9M31 21:05–21:50: quality 1.0M31 21:50–23:00: quality 0.8M31 23:00–01:50: quality 0.7M31 01:50–04:15: quality 0.6M31 04:15–06:05: quality 0.5M31 06:05–06:35: quality 0.2M31 06:35–06:40: quality 0.1observe M31 23:10–00:55M42M42 01:30–01:45: quality 0.2M42 01:45–02:20: quality 0.3M42 02:20–06:05: quality 0.4M42 06:05–06:35: quality 0.2M42 06:35–07:10: quality 0.1observe M42 04:25–06:05M45M45 21:55–22:10: quality 0.3M45 22:10–22:30: quality 0.4M45 22:30–03:20: quality 0.5M45 03:20–06:05: quality 0.4M45 06:05–06:35: quality 0.2M45 06:35–07:10: quality 0.1observe M45 02:40–04:25NGC 7000NGC 7000 19:10–19:40: quality 0.2NGC 7000 19:40–20:15: quality 0.5NGC 7000 20:15–21:50: quality 1.0NGC 7000 21:50–23:30: quality 0.9NGC 7000 23:30–00:50: quality 0.8NGC 7000 00:50–02:15: quality 0.7NGC 7000 02:15–02:45: quality 0.6NGC 7000 02:45–03:05: quality 0.5NGC 7000 03:05–03:25: quality 0.4NGC 7000 03:25–03:35: quality 0.3observe NGC 7000 19:40–21:25V1057 CygV1057 Cyg 19:10–19:40: quality 0.2V1057 Cyg 19:40–20:15: quality 0.5V1057 Cyg 20:15–21:50: quality 1.0V1057 Cyg 21:50–23:30: quality 0.9V1057 Cyg 23:30–00:45: quality 0.8V1057 Cyg 00:45–02:15: quality 0.7V1057 Cyg 02:15–02:45: quality 0.6V1057 Cyg 02:45–03:05: quality 0.5V1057 Cyg 03:05–03:25: quality 0.4V1057 Cyg 03:25–03:35: quality 0.3observe V1057 Cyg 21:25–23:10M33M33 19:20–19:40: quality 0.1M33 19:40–20:00: quality 0.3M33 20:00–20:15: quality 0.4M33 20:15–20:55: quality 0.8M33 20:55–21:50: quality 0.9M33 21:50–00:45: quality 0.7M33 00:45–03:50: quality 0.6M33 03:50–06:00: quality 0.5M33 06:00–06:05: quality 0.4M33 06:05–06:35: quality 0.2M33 06:35–06:45: quality 0.1observe M33 00:55–02:40scheduleNGC 7000V1057 CygM31M33M45M4220:0022:0000:0002:0004:0006:00

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
18:35–19:40 — nothing worth pointing at — 1.08
19:40–21:25 NGC 7000 1.75 0.83
21:25–23:10 V1057 Cyg 1.75 0.9
23:10–00:55 M31 1.75 0.71
00:55–02:40 M33 1.75 0.61
02:40–04:25 M45 1.75 0.45
04:25–06:05 M42 1.67 0.37
06:05–07:40 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 20:15–03:25 (good) 89.7° at 00:25 63.3° 1.75
M42 Great Orion Nebula 17 unknown 02:00–06:05 (marginal) 42.9° at 05:15 27.3° 1.67
M45 Seven Sisters 52 unknown 22:00–06:05 (marginal) 72.5° at 03:25 25.0° 1.75
NGC 7000 North America Nebula 100 unknown 20:15–02:35 (good) 87.2° at 20:40 99.1° 1.75
V1057 Cyg 100 unknown 20:15–02:35 (good) 87.3° at 20:40 99.1° 1.75
M33 Triangulum Pinwheel 91 unknown 20:15–02:10 (good) 79.1° at 01:15 54.1° 1.75
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2030-10-16"

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"}.