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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 Saturday, 21 October 2045 · astronomical night 20:03 → 06:08 (10.09 h) · Moon 85% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:00–19:35: quality 0.1M31 19:35–20:05: quality 0.3M31 20:05–23:30: quality 0.5M31 23:30–02:30: quality 0.6M31 02:30–04:05: quality 0.7M31 04:05–04:55: quality 0.9M31 04:55–05:50: quality 0.8M31 05:50–06:05: quality 0.7M31 06:05–06:10: quality 0.6M31 06:10–06:30: quality 0.3M31 06:30–06:45: quality 0.2observe M31 01:25–03:15M42M42 01:10–01:15: quality 0.3M42 01:15–01:35: quality 0.4M42 01:35–01:50: quality 0.5M42 01:50–02:10: quality 0.6M42 02:10–03:50: quality 0.7M42 03:50–04:05: quality 0.8M42 04:05–06:10: quality 0.9M42 06:10–06:45: quality 0.4M42 06:45–07:15: quality 0.1observe M42 03:15–05:05M45M45 21:35–21:50: quality 0.3M45 21:50–22:10: quality 0.4M45 22:10–22:50: quality 0.5M45 22:50–00:30: quality 0.6M45 00:30–02:45: quality 0.7M45 02:45–04:05: quality 0.8M45 04:05–05:50: quality 1.0M45 05:50–06:10: quality 0.9M45 06:10–06:30: quality 0.5M45 06:30–06:45: quality 0.4M45 06:45–07:15: quality 0.1observe M45 23:35–01:25observe M45 06:25–06:45NGC 7000NGC 7000 19:00–19:35: quality 0.1NGC 7000 19:35–20:05: quality 0.3NGC 7000 20:05–23:40: quality 0.6NGC 7000 23:40–02:25: quality 0.5NGC 7000 02:25–02:55: quality 0.4NGC 7000 02:55–03:15: quality 0.3observe NGC 7000 19:35–19:45observe NGC 7000 20:05–21:45V1057 CygV1057 Cyg 19:00–19:35: quality 0.1V1057 Cyg 19:35–20:05: quality 0.3V1057 Cyg 20:05–23:35: quality 0.6V1057 Cyg 23:35–02:25: quality 0.5V1057 Cyg 02:25–02:55: quality 0.4V1057 Cyg 02:55–03:15: quality 0.3observe V1057 Cyg 21:45–23:35M33M33 19:20–19:35: quality 0.1M33 19:35–20:05: quality 0.2M33 20:05–23:35: quality 0.5M33 23:35–02:35: quality 0.6M33 02:35–04:05: quality 0.7M33 04:05–05:20: quality 0.9M33 05:20–06:05: quality 0.8M33 06:05–06:10: quality 0.7M33 06:10–06:15: quality 0.4M33 06:15–06:40: quality 0.3M33 06:40–06:45: quality 0.2M33 06:45–06:55: quality 0.1observe M33 05:05–06:25scheduleNGC 7000V1057 CygM45M31M42M3320:0022:0000:0002:0004:0006:00

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
18:30–19:35 — nothing worth pointing at — 1.08
19:35–19:45 NGC 7000 0.17 0.3
19:45–20:05 — nothing worth pointing at — 0.33
20:05–21:45 NGC 7000 1.67 0.57
21:45–23:35 V1057 Cyg 1.83 0.56
23:35–01:25 M45 1.83 0.65
01:25–03:15 M31 1.83 0.64
03:15–05:05 M42 1.83 0.82
05:05–06:25 M33 1.33 0.73
06:25–06:45 M45 0.33 0.45
06:45–07:45 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 90 unknown 01:20–06:10 (good) 89.7° at 00:05 51.8° 1.83
M42 Great Orion Nebula 89 unknown 02:00–06:10 (good) 42.9° at 04:55 99.1° 1.83
M45 Seven Sisters 100 unknown 23:40–06:10 (good) 72.6° at 03:05 75.9° 2.17
NGC 7000 North America Nebula 58 unknown 20:05–03:10 (marginal) 87.2° at 20:20 55.6° 1.83
V1057 Cyg 58 unknown 20:05–03:10 (marginal) 87.3° at 20:20 55.5° 1.83
M33 Triangulum Pinwheel 94 unknown 01:25–06:10 (good) 79.2° at 00:55 51.4° 1.33
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2045-10-21"

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"}.