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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 Tuesday, 23 October 2040 · astronomical night 20:00 → 06:10 (10.18 h) · Moon 86% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:00–19:30: quality 0.1M31 19:30–19:50: quality 0.4M31 19:50–20:05: quality 0.5M31 20:05–20:30: quality 0.9M31 20:30–22:20: quality 0.7M31 22:20–00:40: quality 0.6M31 00:40–03:35: quality 0.5M31 03:35–05:45: quality 0.4M31 05:45–06:15: quality 0.3M31 06:15–06:35: quality 0.1observe M31 23:10–01:00M42M42 01:00–01:40: quality 0.2M42 01:40–06:15: quality 0.3M42 06:15–06:45: quality 0.2observe M42 04:40–06:15M45M45 21:25–21:50: quality 0.3M45 21:50–02:40: quality 0.4M45 02:40–06:15: quality 0.3M45 06:15–06:45: quality 0.2observe M45 02:50–04:40NGC 7000NGC 7000 19:00–19:30: quality 0.2NGC 7000 19:30–20:05: quality 0.5NGC 7000 20:05–20:30: quality 1.0NGC 7000 20:30–23:20: quality 0.8NGC 7000 23:20–00:45: quality 0.7NGC 7000 00:45–02:00: quality 0.6NGC 7000 02:00–02:25: quality 0.5NGC 7000 02:25–02:50: quality 0.4NGC 7000 02:50–03:05: quality 0.3observe NGC 7000 19:30–21:20V1057 CygV1057 Cyg 19:00–19:30: quality 0.2V1057 Cyg 19:30–20:05: quality 0.5V1057 Cyg 20:05–20:30: quality 1.0V1057 Cyg 20:30–23:20: quality 0.8V1057 Cyg 23:20–00:45: quality 0.7V1057 Cyg 00:45–02:00: quality 0.6V1057 Cyg 02:00–02:25: quality 0.5V1057 Cyg 02:25–02:50: quality 0.4V1057 Cyg 02:50–03:05: quality 0.3observe V1057 Cyg 21:20–23:10M33M33 19:00–19:30: quality 0.1M33 19:30–20:05: quality 0.4M33 20:05–20:25: quality 0.8M33 20:25–20:30: quality 0.9M33 20:30–23:35: quality 0.6M33 23:35–02:10: quality 0.5M33 02:10–05:50: quality 0.4M33 05:50–06:15: quality 0.3M33 06:15–06:45: quality 0.1observe M33 01:00–02:50scheduleNGC 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
18:25–19:30 — nothing worth pointing at — 1.08
19:30–21:20 NGC 7000 1.83 0.77
21:20–23:10 V1057 Cyg 1.83 0.8
23:10–01:00 M31 1.83 0.57
01:00–02:50 M33 1.83 0.46
02:50–04:40 M45 1.83 0.34
04:40–06:15 M42 1.58 0.31
06:15–07:45 — nothing worth pointing at — 1.5

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 94 unknown 20:05–23:30 (good) 89.8° at 23:55 54.8° 1.83
M42 Great Orion Nebula 13 unknown 04:25–06:15 (marginal) 42.9° at 04:45 31.3° 1.58
M45 Seven Sisters 38 unknown 21:40–06:15 (marginal) 72.5° at 03:00 16.2° 1.83
NGC 7000 North America Nebula 100 unknown 20:05–01:30 (good) 87.2° at 20:10 91.8° 1.83
V1057 Cyg 100 unknown 20:05–01:30 (good) 87.3° at 20:10 91.9° 1.83
M33 Triangulum Pinwheel 85 unknown 20:05–22:35 (good) 79.2° at 00:45 45.2° 1.83
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2040-10-23"

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"}.