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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 Tuesday, 26 October 2027 · astronomical night 19:57 → 06:13 (10.27 h) · Moon 9% (waning crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:55–19:30: quality 0.1M31 19:30–19:40: quality 0.4M31 19:40–20:00: quality 0.5M31 20:00–20:25: quality 0.9M31 20:25–03:10: quality 1.0M31 03:10–04:35: quality 0.9M31 04:35–05:30: quality 0.8M31 05:30–05:45: quality 0.7M31 05:45–06:00: quality 0.6M31 06:00–06:15: quality 0.5M31 06:15–06:25: quality 0.2observe M31 23:20–01:15M42M42 00:50–01:00: quality 0.4M42 01:00–01:15: quality 0.5M42 01:15–01:30: quality 0.6M42 01:30–01:50: quality 0.7M42 01:50–03:00: quality 0.8M42 03:00–05:55: quality 0.9M42 05:55–06:15: quality 0.8M42 06:15–06:50: quality 0.4M42 06:50–07:20: quality 0.1observe M42 05:05–06:50M45M45 21:15–21:20: quality 0.4M45 21:20–21:35: quality 0.5M45 21:35–21:50: quality 0.6M45 21:50–22:05: quality 0.7M45 22:05–22:50: quality 0.8M45 22:50–00:10: quality 0.9M45 00:10–05:25: quality 1.0M45 05:25–06:15: quality 0.9M45 06:15–06:50: quality 0.4M45 06:50–07:20: quality 0.1observe M45 03:10–05:05NGC 7000NGC 7000 18:55–19:30: quality 0.2NGC 7000 19:30–20:00: quality 0.5NGC 7000 20:00–23:30: quality 1.0NGC 7000 23:30–01:00: quality 0.9NGC 7000 01:00–01:55: quality 0.8NGC 7000 01:55–02:15: quality 0.7NGC 7000 02:15–02:30: quality 0.6NGC 7000 02:30–02:50: quality 0.5NGC 7000 02:50–02:55: quality 0.4observe NGC 7000 19:30–21:25V1057 CygV1057 Cyg 18:55–19:30: quality 0.2V1057 Cyg 19:30–20:00: quality 0.5V1057 Cyg 20:00–23:30: quality 1.0V1057 Cyg 23:30–01:00: quality 0.9V1057 Cyg 01:00–01:55: quality 0.8V1057 Cyg 01:55–02:15: quality 0.7V1057 Cyg 02:15–02:30: quality 0.6V1057 Cyg 02:30–02:45: quality 0.5V1057 Cyg 02:45–02:55: quality 0.4observe V1057 Cyg 21:25–23:20M33M33 18:55–19:30: quality 0.1M33 19:30–20:00: quality 0.4M33 20:00–20:20: quality 0.8M33 20:20–21:40: quality 0.9M33 21:40–03:40: quality 1.0M33 03:40–05:00: quality 0.9M33 05:00–05:45: quality 0.8M33 05:45–06:00: quality 0.7M33 06:00–06:15: quality 0.6M33 06:15–06:20: quality 0.3M33 06:20–06:35: quality 0.2observe M33 01:15–03:10scheduleNGC 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
18:20–19:30 — nothing worth pointing at — 1.17
19:30–21:25 NGC 7000 1.92 0.87
21:25–23:20 V1057 Cyg 1.92 1.0
23:20–01:15 M31 1.92 1.0
01:15–03:10 M33 1.92 1.0
03:10–05:05 M45 1.92 1.0
05:05–06:50 M42 1.75 0.71
06:50–07:50 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 20:00–05:55 (good) 89.7° at 23:45 139.9° 1.92
M42 Great Orion Nebula 89 unknown 01:25–06:15 (good) 42.9° at 04:35 93.1° 1.75
M45 Seven Sisters 100 unknown 21:45–06:15 (good) 72.5° at 02:50 119.0° 1.92
NGC 7000 North America Nebula 100 unknown 20:00–02:20 (good) 87.2° at 20:00 124.3° 1.92
V1057 Cyg 100 unknown 20:00–02:20 (good) 87.3° at 20:00 124.4° 1.92
M33 Triangulum Pinwheel 100 unknown 20:00–06:10 (good) 79.1° at 00:35 142.9° 1.92
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-10-26"

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"}.