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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 Friday, 22 October 2027 · astronomical night 20:02 → 06:08 (10.11 h) · Moon 48% (last quarter) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:00–19:35: quality 0.1M31 19:35–20:00: quality 0.4M31 20:00–20:05: quality 0.5M31 20:05–20:40: quality 0.9M31 20:40–00:20: quality 1.0M31 00:20–03:10: quality 0.9M31 03:10–04:30: quality 0.8M31 04:30–05:45: quality 0.7M31 05:45–06:00: quality 0.6M31 06:00–06:10: quality 0.5M31 06:10–06:45: quality 0.2observe M31 23:25–01:20M42M42 01:10–01:30: quality 0.4M42 01:30–01:55: quality 0.5M42 01:55–06:10: quality 0.6M42 06:10–06:45: quality 0.3M42 06:45–07:15: quality 0.1observe M42 05:10–06:20M45M45 21:30–21:40: quality 0.4M45 21:40–21:50: quality 0.5M45 21:50–22:05: quality 0.6M45 22:05–22:20: quality 0.7M45 22:20–23:05: quality 0.8M45 23:05–00:20: quality 0.9M45 00:20–05:15: quality 0.8M45 05:15–06:10: quality 0.7M45 06:10–06:45: quality 0.3M45 06:45–07:15: quality 0.1observe M45 03:15–05:10observe M45 06:20–06:45NGC 7000NGC 7000 19:00–19:35: quality 0.2NGC 7000 19:35–20:05: quality 0.5NGC 7000 20:05–23:45: quality 1.0NGC 7000 23:45–00:35: quality 0.9NGC 7000 00:35–02:05: quality 0.8NGC 7000 02:05–02:20: quality 0.7NGC 7000 02:20–02:40: quality 0.6NGC 7000 02:40–02:55: quality 0.5NGC 7000 02:55–03:10: quality 0.4observe NGC 7000 19:35–21:30V1057 CygV1057 Cyg 19:00–19:35: quality 0.2V1057 Cyg 19:35–20:05: quality 0.5V1057 Cyg 20:05–23:45: quality 1.0V1057 Cyg 23:45–00:35: quality 0.9V1057 Cyg 00:35–02:05: quality 0.8V1057 Cyg 02:05–02:20: quality 0.7V1057 Cyg 02:20–02:40: quality 0.6V1057 Cyg 02:40–02:55: quality 0.5V1057 Cyg 02:55–03:10: quality 0.4observe V1057 Cyg 21:30–23:25M33M33 19:00–19:35: quality 0.1M33 19:35–19:40: quality 0.3M33 19:40–20:05: quality 0.4M33 20:05–20:35: quality 0.8M33 20:35–21:55: quality 0.9M33 21:55–00:20: quality 1.0M33 00:20–03:25: quality 0.9M33 03:25–04:45: quality 0.8M33 04:45–06:00: quality 0.7M33 06:00–06:10: quality 0.6M33 06:10–06:25: quality 0.3M33 06:25–06:45: quality 0.2M33 06:45–06:55: quality 0.1observe M33 01:20–03:15scheduleNGC 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
18:25–19:35 — nothing worth pointing at — 1.17
19:35–21:30 NGC 7000 1.92 0.87
21:30–23:25 V1057 Cyg 1.92 1.0
23:25–01:20 M31 1.92 0.95
01:20–03:15 M33 1.92 0.88
03:15–05:10 M45 1.92 0.78
05:10–06:20 M42 1.17 0.57
06:20–06:45 M45 0.42 0.33
06:45–07:45 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 20:05–05:50 (good) 89.7° at 00:00 93.0° 1.92
M42 Great Orion Nebula 53 unknown 02:05–06:10 (good) 42.9° at 04:55 47.2° 1.17
M45 Seven Sisters 94 unknown 22:00–06:10 (good) 72.5° at 03:05 62.1° 2.33
NGC 7000 North America Nebula 100 unknown 20:05–02:30 (good) 87.2° at 20:15 114.7° 1.92
V1057 Cyg 100 unknown 20:05–02:30 (good) 87.3° at 20:15 114.8° 1.92
M33 Triangulum Pinwheel 100 unknown 20:05–06:05 (good) 79.1° at 00:50 88.5° 1.92
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-10-22"

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"}.