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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, 19 October 2027 · astronomical night 20:06 → 06:05 (9.98 h) · Moon 80% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:05–19:35: quality 0.1M31 19:35–20:10: quality 0.4M31 20:10–20:50: quality 0.9M31 20:50–20:55: quality 1.0M31 20:55–23:40: quality 0.7M31 23:40–02:40: quality 0.6M31 02:40–04:55: quality 0.5M31 04:55–06:10: quality 0.4M31 06:10–06:30: quality 0.2M31 06:30–06:40: quality 0.1observe M31 23:15–01:05M42M42 01:20–01:40: quality 0.2M42 01:40–06:10: quality 0.3M42 06:10–06:40: quality 0.2M42 06:40–07:15: quality 0.1observe M42 04:45–06:10M45M45 21:45–22:05: quality 0.3M45 22:05–22:30: quality 0.4M45 22:30–01:30: quality 0.5M45 01:30–06:10: quality 0.4M45 06:10–06:40: quality 0.2M45 06:40–07:15: quality 0.1observe M45 02:55–04:45NGC 7000NGC 7000 19:05–19:35: quality 0.2NGC 7000 19:35–20:10: quality 0.5NGC 7000 20:10–20:55: quality 1.0NGC 7000 20:55–21:20: quality 0.9NGC 7000 21:20–00:00: quality 0.8NGC 7000 00:00–01:20: quality 0.7NGC 7000 01:20–02:25: quality 0.6NGC 7000 02:25–02:45: quality 0.5NGC 7000 02:45–03:10: quality 0.4NGC 7000 03:10–03:25: quality 0.3observe NGC 7000 19:35–21:25V1057 CygV1057 Cyg 19:05–19:35: quality 0.2V1057 Cyg 19:35–20:10: quality 0.5V1057 Cyg 20:10–20:55: quality 1.0V1057 Cyg 20:55–21:20: quality 0.9V1057 Cyg 21:20–00:00: quality 0.8V1057 Cyg 00:00–01:20: quality 0.7V1057 Cyg 01:20–02:25: quality 0.6V1057 Cyg 02:25–02:45: quality 0.5V1057 Cyg 02:45–03:10: quality 0.4V1057 Cyg 03:10–03:25: quality 0.3observe V1057 Cyg 21:25–23:15M33M33 19:10–19:35: quality 0.1M33 19:35–19:50: quality 0.3M33 19:50–20:10: quality 0.4M33 20:10–20:45: quality 0.8M33 20:45–20:55: quality 0.9M33 20:55–22:10: quality 0.6M33 22:10–22:50: quality 0.7M33 22:50–01:15: quality 0.6M33 01:15–04:15: quality 0.5M33 04:15–06:10: quality 0.4M33 06:10–06:35: quality 0.2M33 06:35–06:40: quality 0.1observe M33 01:05–02:55scheduleNGC 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
18:30–19:35 — nothing worth pointing at — 1.08
19:35–21:25 NGC 7000 1.83 0.8
21:25–23:15 V1057 Cyg 1.83 0.83
23:15–01:05 M31 1.83 0.63
01:05–02:55 M33 1.83 0.53
02:55–04:45 M45 1.83 0.39
04:45–06:10 M42 1.42 0.35
06:10–07:40 — nothing worth pointing at — 1.5

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 95 unknown 20:10–01:00 (good) 89.5° at 00:15 56.9° 1.83
M42 Great Orion Nebula 15 unknown 02:05–06:10 (marginal) 42.9° at 05:05 32.5° 1.42
M45 Seven Sisters 43 unknown 21:55–06:10 (marginal) 72.5° at 03:15 20.3° 1.83
NGC 7000 North America Nebula 100 unknown 20:10–02:10 (good) 87.2° at 20:30 92.5° 1.83
V1057 Cyg 100 unknown 20:10–02:10 (good) 87.3° at 20:30 92.6° 1.83
M33 Triangulum Pinwheel 86 unknown 20:10–00:00 (good) 79.1° at 01:05 48.3° 1.83
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-10-19"

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"}.