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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, 27 October 2040 · astronomical night 19:54 → 05:15 (10.34 h) · Moon 51% (last quarter) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:55–19:25: quality 0.1M31 19:25–19:35: quality 0.4M31 19:35–19:55: quality 0.5M31 19:55–20:20: quality 0.9M31 20:20–23:55: quality 1.0M31 23:55–02:40: quality 0.9M31 02:40–03:00: quality 0.8M31 03:00–04:20: quality 0.7M31 04:20–04:40: quality 0.6M31 04:40–04:55: quality 0.5M31 04:55–05:15: quality 0.4M31 05:15–05:20: quality 0.3observe M31 23:15–01:10M42M42 00:45–00:50: quality 0.3M42 00:50–01:10: quality 0.4M42 01:10–01:30: quality 0.5M42 01:30–05:20: quality 0.6M42 05:20–05:50: quality 0.3M42 05:50–06:25: quality 0.1observe M42 04:00–05:20M45M45 21:10–21:15: quality 0.4M45 21:15–21:30: quality 0.5M45 21:30–21:45: quality 0.6M45 21:45–21:55: quality 0.7M45 21:55–22:45: quality 0.8M45 22:45–23:55: quality 0.9M45 23:55–03:40: quality 0.8M45 03:40–05:15: quality 0.7M45 05:15–05:20: quality 0.6M45 05:20–05:50: quality 0.3M45 05:50–06:25: quality 0.1observe M45 03:05–04:00observe M45 05:20–05:50NGC 7000NGC 7000 18:55–19:25: quality 0.2NGC 7000 19:25–19:55: quality 0.5NGC 7000 19:55–23:25: quality 1.0NGC 7000 23:25–00:05: quality 0.9NGC 7000 00:05–01:35: quality 0.8NGC 7000 01:35–01:55: quality 0.7NGC 7000 01:55–02:15: quality 0.6NGC 7000 02:15–02:35: quality 0.5NGC 7000 02:35–02:50: quality 0.4observe NGC 7000 19:25–21:20V1057 CygV1057 Cyg 18:55–19:25: quality 0.2V1057 Cyg 19:25–19:55: quality 0.5V1057 Cyg 19:55–23:25: quality 1.0V1057 Cyg 23:25–00:05: quality 0.9V1057 Cyg 00:05–01:35: quality 0.8V1057 Cyg 01:35–01:55: quality 0.7V1057 Cyg 01:55–02:15: quality 0.6V1057 Cyg 02:15–02:35: quality 0.5V1057 Cyg 02:35–02:50: quality 0.4observe V1057 Cyg 21:20–23:15M33M33 18:55–19:25: quality 0.1M33 19:25–19:55: quality 0.4M33 19:55–20:10: quality 0.8M33 20:10–21:30: quality 0.9M33 21:30–23:55: quality 1.0M33 23:55–02:55: quality 0.9M33 02:55–03:15: quality 0.8M33 03:15–04:35: quality 0.7M33 04:35–04:50: quality 0.6M33 04:50–05:10: quality 0.5M33 05:10–05:20: quality 0.4M33 05:20–05:30: quality 0.2observe M33 01:10–03:05scheduleNGC 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
18:20–19:25 — nothing worth pointing at — 1.08
19:25–21:20 NGC 7000 1.92 0.87
21:20–23:15 V1057 Cyg 1.92 0.99
23:15–01:10 M31 1.92 0.93
01:10–03:05 M33 1.92 0.87
03:05–04:00 M45 1.92 0.76
04:00–05:20 M42 1.33 0.6
05:20–05:50 M45 0.5 0.31
05:50–06:50 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 19:55–04:30 (good) 89.7° at 23:40 92.4° 1.92
M42 Great Orion Nebula 57 unknown 01:45–04:50 (good) 42.9° at 03:30 51.8° 1.33
M45 Seven Sisters 94 unknown 21:35–05:20 (good) 72.5° at 02:40 64.0° 2.42
NGC 7000 North America Nebula 100 unknown 19:55–02:05 (good) 87.2° at 19:55 111.3° 1.92
V1057 Cyg 100 unknown 19:55–02:05 (good) 87.3° at 19:55 111.4° 1.92
M33 Triangulum Pinwheel 100 unknown 19:55–04:45 (good) 79.2° at 00:30 89.1° 1.92
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2040-10-27"

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"}.