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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 Monday, 19 October 2037 · astronomical night 20:05 → 06:06 (10.01 h) · Moon 84% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:05–19:35: quality 0.1M31 19:35–20:10: quality 0.3M31 20:10–01:15: quality 0.6M31 01:15–03:40: quality 0.7M31 03:40–05:05: quality 0.9M31 05:05–05:55: quality 0.8M31 05:55–06:10: quality 0.7M31 06:10–06:35: quality 0.3M31 06:35–06:40: quality 0.2M31 06:40–06:55: quality 0.1observe M31 01:20–03:15M42M42 01:20–01:40: quality 0.4M42 01:40–02:00: quality 0.5M42 02:00–02:20: quality 0.6M42 02:20–03:40: quality 0.7M42 03:40–06:10: quality 0.9M42 06:10–06:40: quality 0.4M42 06:40–07:15: quality 0.1observe M42 03:15–05:10M45M45 21:40–21:55: quality 0.3M45 21:55–22:15: quality 0.4M45 22:15–22:35: quality 0.5M45 22:35–00:05: quality 0.6M45 00:05–01:40: quality 0.7M45 01:40–03:40: quality 0.8M45 03:40–05:55: quality 1.0M45 05:55–06:10: quality 0.9M45 06:10–06:40: quality 0.5M45 06:40–07:15: quality 0.1observe M45 23:25–01:20observe M45 06:35–06:40NGC 7000NGC 7000 19:05–19:35: quality 0.1NGC 7000 19:35–20:10: quality 0.3NGC 7000 20:10–02:15: quality 0.6NGC 7000 02:15–02:40: quality 0.5NGC 7000 02:40–03:10: quality 0.4NGC 7000 03:10–03:20: quality 0.3observe NGC 7000 19:35–21:30V1057 CygV1057 Cyg 19:05–19:35: quality 0.1V1057 Cyg 19:35–20:10: quality 0.3V1057 Cyg 20:10–02:15: quality 0.6V1057 Cyg 02:15–02:40: quality 0.5V1057 Cyg 02:40–03:10: quality 0.4V1057 Cyg 03:10–03:20: quality 0.3observe V1057 Cyg 21:30–23:25M33M33 19:25–19:35: quality 0.1M33 19:35–20:05: quality 0.2M33 20:05–20:10: quality 0.3M33 20:10–21:45: quality 0.5M33 21:45–01:25: quality 0.6M33 01:25–03:40: quality 0.7M33 03:40–04:05: quality 1.0M33 04:05–05:25: quality 0.9M33 05:25–06:10: quality 0.8M33 06:10–06:20: quality 0.4M33 06:20–06:40: quality 0.3M33 06:40–07:05: quality 0.1observe M33 05:10–06:35scheduleNGC 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
19:35–21:30 NGC 7000 1.92 0.53
21:30–23:25 V1057 Cyg 1.92 0.61
23:25–01:20 M45 1.92 0.67
01:20–03:15 M31 1.92 0.69
03:15–05:10 M42 1.92 0.85
05:10–06:35 M33 1.42 0.69
06:35–06:40 M45 0.08 0.45
06:40–07:40 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 94 unknown 22:40–06:10 (good) 89.7° at 00:10 58.2° 1.92
M42 Great Orion Nebula 87 unknown 02:10–06:10 (good) 42.9° at 05:05 99.4° 1.92
M45 Seven Sisters 100 unknown 23:15–06:10 (good) 72.5° at 03:15 79.9° 2.0
NGC 7000 North America Nebula 64 unknown 20:10–23:50 (good) 87.2° at 20:25 61.1° 1.92
V1057 Cyg 64 unknown 20:10–23:50 (good) 87.3° at 20:25 61.0° 1.92
M33 Triangulum Pinwheel 98 unknown 23:20–06:10 (good) 79.2° at 01:00 57.0° 1.42
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2037-10-19"

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"}.