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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 Sunday, 03 October 2027 · astronomical night 20:32 → 05:48 (9.26 h) · Moon 17% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:30–20:00: quality 0.1M31 20:00–20:35: quality 0.4M31 20:35–21:55: quality 0.9M31 21:55–04:40: quality 1.0M31 04:40–05:50: quality 0.9M31 05:50–06:25: quality 0.4M31 06:25–06:55: quality 0.1observe M31 23:30–01:15M42M42 02:20–02:30: quality 0.4M42 02:30–02:45: quality 0.5M42 02:45–03:00: quality 0.6M42 03:00–03:20: quality 0.7M42 03:20–04:30: quality 0.8M42 04:30–05:50: quality 0.9M42 05:50–06:25: quality 0.4M42 06:25–06:55: quality 0.1observe M42 04:45–06:25M45M45 22:45–22:55: quality 0.4M45 22:55–23:05: quality 0.5M45 23:05–23:20: quality 0.6M45 23:20–23:35: quality 0.7M45 23:35–00:20: quality 0.8M45 00:20–01:40: quality 0.9M45 01:40–05:50: quality 1.0M45 05:50–06:25: quality 0.5M45 06:25–06:55: quality 0.1observe M45 03:00–04:45NGC 7000NGC 7000 19:30–20:00: quality 0.1NGC 7000 20:00–20:35: quality 0.5NGC 7000 20:35–01:00: quality 1.0NGC 7000 01:00–02:30: quality 0.9NGC 7000 02:30–03:25: quality 0.8NGC 7000 03:25–03:45: quality 0.7NGC 7000 03:45–04:00: quality 0.6NGC 7000 04:00–04:20: quality 0.5NGC 7000 04:20–04:25: quality 0.4observe NGC 7000 20:00–21:45V1057 CygV1057 Cyg 19:30–20:00: quality 0.1V1057 Cyg 20:00–20:35: quality 0.5V1057 Cyg 20:35–01:00: quality 1.0V1057 Cyg 01:00–02:30: quality 0.9V1057 Cyg 02:30–03:25: quality 0.8V1057 Cyg 03:25–03:45: quality 0.7V1057 Cyg 03:45–04:00: quality 0.6V1057 Cyg 04:00–04:20: quality 0.5V1057 Cyg 04:20–04:25: quality 0.4observe V1057 Cyg 21:45–23:30M33M33 20:10–20:25: quality 0.2M33 20:25–20:35: quality 0.3M33 20:35–20:45: quality 0.6M33 20:45–21:00: quality 0.7M33 21:00–21:50: quality 0.8M33 21:50–23:10: quality 0.9M33 23:10–05:10: quality 1.0M33 05:10–05:50: quality 0.9M33 05:50–06:25: quality 0.4M33 06:25–06:55: quality 0.1observe M33 01:15–03:00scheduleNGC 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
19:00–20:00 — nothing worth pointing at — 1.0
20:00–21:45 NGC 7000 1.75 0.83
21:45–23:30 V1057 Cyg 1.75 1.0
23:30–01:15 M31 1.75 1.0
01:15–03:00 M33 1.75 1.0
03:00–04:45 M45 1.75 1.0
04:45–06:25 M42 1.67 0.72
06:25–07:25 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 20:35–05:50 (good) 89.7° at 01:15 138.9° 1.75
M42 Great Orion Nebula 67 unknown 02:55–05:50 (good) 42.9° at 06:05 139.7° 1.67
M45 Seven Sisters 100 unknown 23:15–05:50 (good) 72.5° at 04:20 179.3° 1.75
NGC 7000 North America Nebula 100 unknown 20:35–03:50 (good) 87.2° at 21:30 99.3° 1.75
V1057 Cyg 100 unknown 20:35–03:50 (good) 87.3° at 21:30 99.3° 1.75
M33 Triangulum Pinwheel 100 unknown 20:40–05:50 (good) 79.1° at 02:05 150.5° 1.75

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-10-03"

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"}.