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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, 09 October 2027 · astronomical night 20:22 → 05:54 (9.54 h) · Moon 72% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:20–19:55: quality 0.1M31 19:55–20:25: quality 0.3M31 20:25–22:10: quality 0.7M31 22:10–02:05: quality 0.8M31 02:05–04:20: quality 1.0M31 04:20–05:45: quality 0.9M31 05:45–05:55: quality 0.8M31 05:55–06:30: quality 0.4M31 06:30–07:00: quality 0.1observe M31 21:45–23:35M42M42 02:00–02:05: quality 0.4M42 02:05–02:20: quality 0.5M42 02:20–02:40: quality 0.6M42 02:40–02:55: quality 0.7M42 02:55–04:05: quality 0.8M42 04:05–05:55: quality 0.9M42 05:55–06:30: quality 0.4M42 06:30–07:00: quality 0.1observe M42 03:55–05:45M45M45 22:20–22:25: quality 0.3M45 22:25–22:40: quality 0.4M45 22:40–22:55: quality 0.5M45 22:55–23:10: quality 0.6M45 23:10–00:00: quality 0.7M45 00:00–01:15: quality 0.8M45 01:15–02:05: quality 0.9M45 02:05–05:55: quality 1.0M45 05:55–06:30: quality 0.5M45 06:30–07:00: quality 0.1observe M45 01:25–03:15observe M45 05:45–06:30NGC 7000NGC 7000 19:20–19:55: quality 0.1NGC 7000 19:55–20:25: quality 0.3NGC 7000 20:25–02:05: quality 0.7NGC 7000 02:05–02:10: quality 0.9NGC 7000 02:10–03:05: quality 0.8NGC 7000 03:05–03:20: quality 0.7NGC 7000 03:20–03:35: quality 0.6NGC 7000 03:35–03:55: quality 0.5NGC 7000 03:55–04:05: quality 0.4observe NGC 7000 19:55–21:45V1057 CygV1057 Cyg 19:20–19:55: quality 0.1V1057 Cyg 19:55–20:25: quality 0.3V1057 Cyg 20:25–02:05: quality 0.7V1057 Cyg 02:05–02:10: quality 0.9V1057 Cyg 02:10–03:05: quality 0.8V1057 Cyg 03:05–03:20: quality 0.7V1057 Cyg 03:20–03:35: quality 0.6V1057 Cyg 03:35–03:55: quality 0.5V1057 Cyg 03:55–04:05: quality 0.4observe V1057 Cyg 03:15–03:55M33M33 19:50–19:55: quality 0.1M33 19:55–20:25: quality 0.2M33 20:25–20:35: quality 0.5M33 20:35–21:25: quality 0.6M33 21:25–23:00: quality 0.7M33 23:00–02:05: quality 0.8M33 02:05–04:45: quality 1.0M33 04:45–05:55: quality 0.9M33 05:55–06:30: quality 0.4M33 06:30–07:00: quality 0.1observe M33 23:35–01:25scheduleNGC 7000M31M33M45M42M4520:0022:0000:0002:0004:0006:00

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
18:50–19:55 — nothing worth pointing at — 1.08
19:55–21:45 NGC 7000 1.83 0.59
21:45–23:35 M31 1.83 0.76
23:35–01:25 M33 1.83 0.8
01:25–03:15 M45 1.83 0.96
03:15–03:55 V1057 Cyg 0.67 0.56
03:55–05:45 M42 1.83 0.87
05:45–06:30 M45 0.75 0.6
06:30–07:30 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 20:25–05:55 (good) 89.5° at 00:50 77.4° 1.83
M42 Great Orion Nebula 76 unknown 02:30–05:55 (good) 42.9° at 05:45 124.7° 1.83
M45 Seven Sisters 100 unknown 23:00–05:55 (good) 72.5° at 03:55 106.9° 2.58
NGC 7000 North America Nebula 85 unknown 20:25–03:30 (good) 87.2° at 21:10 61.0° 1.83
V1057 Cyg 85 unknown 20:25–03:30 (good) 87.3° at 21:10 60.9° 0.67
M33 Triangulum Pinwheel 100 unknown 20:40–05:55 (good) 79.1° at 01:45 80.9° 1.83
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-10-09"

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"}.