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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, 12 October 2027 · astronomical night 20:17 → 05:58 (9.68 h) · Moon 93% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:15–19:50: quality 0.1M31 19:50–20:20: quality 0.2M31 20:20–02:40: quality 0.5M31 02:40–05:10: quality 0.6M31 05:10–05:30: quality 0.9M31 05:30–06:00: quality 0.8M31 06:00–06:35: quality 0.4M31 06:35–07:05: quality 0.1observe M31 01:35–03:20M42M42 01:45–01:55: quality 0.3M42 01:55–02:15: quality 0.4M42 02:15–02:35: quality 0.5M42 02:35–03:15: quality 0.6M42 03:15–05:10: quality 0.7M42 05:10–06:00: quality 0.9M42 06:00–06:35: quality 0.4M42 06:35–07:05: quality 0.1observe M42 03:20–05:05M45M45 22:10–22:15: quality 0.2M45 22:15–22:35: quality 0.3M45 22:35–23:00: quality 0.4M45 23:00–00:35: quality 0.5M45 00:35–02:25: quality 0.6M45 02:25–04:55: quality 0.7M45 04:55–05:10: quality 0.8M45 05:10–06:00: quality 1.0M45 06:00–06:35: quality 0.5M45 06:35–07:05: quality 0.1observe M45 23:50–01:35NGC 7000NGC 7000 19:15–19:50: quality 0.1NGC 7000 19:50–20:20: quality 0.3NGC 7000 20:20–20:35: quality 0.6NGC 7000 20:35–02:50: quality 0.5NGC 7000 02:50–03:20: quality 0.4NGC 7000 03:20–03:50: quality 0.3observe NGC 7000 20:20–22:05V1057 CygV1057 Cyg 19:15–19:50: quality 0.1V1057 Cyg 19:50–20:20: quality 0.3V1057 Cyg 20:20–20:35: quality 0.6V1057 Cyg 20:35–02:50: quality 0.5V1057 Cyg 02:50–03:20: quality 0.4V1057 Cyg 03:20–03:50: quality 0.3observe V1057 Cyg 22:05–23:50M33M33 19:50–20:00: quality 0.1M33 20:00–20:20: quality 0.2M33 20:20–23:05: quality 0.4M33 23:05–02:50: quality 0.5M33 02:50–05:10: quality 0.6M33 05:10–05:55: quality 0.9M33 05:55–06:00: quality 0.8M33 06:00–06:35: quality 0.4M33 06:35–07:05: quality 0.1observe M33 05:05–06:35scheduleNGC 7000V1057 CygM45M31M42M3320:0022:0000:0002:0004:0006:00

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
18:45–20:20 — nothing worth pointing at — 1.58
20:20–22:05 NGC 7000 1.75 0.53
22:05–23:50 V1057 Cyg 1.75 0.5
23:50–01:35 M45 1.75 0.56
01:35–03:20 M31 1.75 0.54
03:20–05:05 M42 1.75 0.7
05:05–06:35 M33 1.5 0.68
06:35–07:35 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 87 unknown 05:10–06:00 (good) 89.7° at 00:40 47.4° 1.75
M42 Great Orion Nebula 70 unknown 02:45–06:00 (good) 42.9° at 05:30 95.3° 1.75
M45 Seven Sisters 100 unknown 01:20–06:00 (good) 72.5° at 03:45 70.9° 1.75
NGC 7000 North America Nebula 53 unknown 20:20–03:40 (marginal) 87.2° at 20:55 54.8° 1.75
V1057 Cyg 53 unknown 20:20–03:35 (marginal) 87.3° at 20:55 54.7° 1.75
M33 Triangulum Pinwheel 90 unknown 03:45–06:00 (good) 79.1° at 01:30 46.4° 1.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-10-12"

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"}.