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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, 06 October 2027 · astronomical night 20:27 → 05:51 (9.4 h) · Moon 44% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:25–19:55: quality 0.1M31 19:55–20:30: quality 0.4M31 20:30–21:10: quality 0.8M31 21:10–23:00: quality 0.9M31 23:00–04:30: quality 1.0M31 04:30–05:55: quality 0.9M31 05:55–06:25: quality 0.4M31 06:25–07:00: quality 0.1observe M31 23:35–01:25M42M42 02:10–02:20: quality 0.4M42 02:20–02:35: quality 0.5M42 02:35–02:50: quality 0.6M42 02:50–03:05: quality 0.7M42 03:05–04:15: quality 0.8M42 04:15–05:55: quality 0.9M42 05:55–06:25: quality 0.4M42 06:25–07:00: quality 0.1observe M42 05:05–06:25M45M45 22:35–22:45: quality 0.4M45 22:45–22:55: quality 0.5M45 22:55–23:10: quality 0.6M45 23:10–23:20: quality 0.7M45 23:20–00:10: quality 0.8M45 00:10–01:30: quality 0.9M45 01:30–05:55: quality 1.0M45 05:55–06:25: quality 0.5M45 06:25–07:00: quality 0.1observe M45 03:15–05:05NGC 7000NGC 7000 19:25–19:55: quality 0.1NGC 7000 19:55–20:30: quality 0.4NGC 7000 20:30–23:00: quality 0.9NGC 7000 23:00–00:50: quality 1.0NGC 7000 00:50–02:20: quality 0.9NGC 7000 02:20–03:15: quality 0.8NGC 7000 03:15–03:30: quality 0.7NGC 7000 03:30–03:50: quality 0.6NGC 7000 03:50–04:05: quality 0.5NGC 7000 04:05–04:15: quality 0.4observe NGC 7000 19:55–21:45V1057 CygV1057 Cyg 19:25–19:55: quality 0.1V1057 Cyg 19:55–20:30: quality 0.4V1057 Cyg 20:30–23:00: quality 0.9V1057 Cyg 23:00–00:50: quality 1.0V1057 Cyg 00:50–02:20: quality 0.9V1057 Cyg 02:20–03:15: quality 0.8V1057 Cyg 03:15–03:30: quality 0.7V1057 Cyg 03:30–03:50: quality 0.6V1057 Cyg 03:50–04:05: quality 0.5V1057 Cyg 04:05–04:15: quality 0.4observe V1057 Cyg 21:45–23:35M33M33 20:00–20:20: quality 0.2M33 20:20–20:30: quality 0.3M33 20:30–20:40: quality 0.6M33 20:40–20:55: quality 0.7M33 20:55–22:10: quality 0.8M33 22:10–23:00: quality 0.9M33 23:00–04:55: quality 1.0M33 04:55–05:55: quality 0.9M33 05:55–06:25: quality 0.4M33 06:25–07:00: quality 0.1observe M33 01:25–03:15scheduleNGC 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
18:55–19:55 — nothing worth pointing at — 1.0
19:55–21:45 NGC 7000 1.83 0.73
21:45–23:35 V1057 Cyg 1.83 0.92
23:35–01:25 M31 1.83 1.0
01:25–03:15 M33 1.83 1.0
03:15–05:05 M45 1.83 1.0
05:05–06:25 M42 1.33 0.72
06:25–07:25 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 20:30–05:55 (good) 89.7° at 01:05 108.7° 1.83
M42 Great Orion Nebula 72 unknown 02:40–05:55 (good) 42.9° at 05:55 145.8° 1.33
M45 Seven Sisters 100 unknown 23:00–05:55 (good) 72.5° at 04:05 142.6° 1.83
NGC 7000 North America Nebula 100 unknown 20:30–03:40 (good) 87.3° at 21:20 77.9° 1.83
V1057 Cyg 100 unknown 20:30–03:40 (good) 87.3° at 21:20 77.8° 1.83
M33 Triangulum Pinwheel 100 unknown 20:35–05:55 (good) 79.1° at 01:55 115.5° 1.83
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-10-06"

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"}.