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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, 23 September 2034 · astronomical night 20:49 → 05:37 (8.79 h) · Moon 79% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:45–20:20: quality 0.1M31 20:20–20:50: quality 0.3M31 20:50–21:45: quality 0.6M31 21:45–23:55: quality 0.7M31 23:55–02:50: quality 0.8M31 02:50–05:20: quality 1.0M31 05:20–05:40: quality 0.9M31 05:40–06:00: quality 0.5M31 06:00–06:15: quality 0.4M31 06:15–06:45: quality 0.1observe M31 22:00–23:40M42M42 03:00–03:10: quality 0.4M42 03:10–03:25: quality 0.5M42 03:25–03:40: quality 0.6M42 03:40–03:55: quality 0.7M42 03:55–05:05: quality 0.8M42 05:05–05:40: quality 0.9M42 05:40–06:15: quality 0.4M42 06:15–06:45: quality 0.1observe M42 04:40–06:15M45M45 23:25–23:40: quality 0.4M45 23:40–23:55: quality 0.5M45 23:55–00:10: quality 0.6M45 00:10–00:55: quality 0.7M45 00:55–02:10: quality 0.8M45 02:10–02:50: quality 0.9M45 02:50–05:40: quality 1.0M45 05:40–06:15: quality 0.5M45 06:15–06:45: quality 0.2observe M45 01:20–03:00NGC 7000NGC 7000 19:45–20:20: quality 0.1NGC 7000 20:20–20:50: quality 0.3NGC 7000 20:50–23:05: quality 0.6NGC 7000 23:05–02:50: quality 0.7NGC 7000 02:50–03:10: quality 0.9NGC 7000 03:10–04:05: quality 0.8NGC 7000 04:05–04:20: quality 0.7NGC 7000 04:20–04:40: quality 0.6NGC 7000 04:40–04:55: quality 0.5NGC 7000 04:55–05:05: quality 0.4observe NGC 7000 20:20–22:00V1057 CygV1057 Cyg 19:45–20:20: quality 0.1V1057 Cyg 20:20–20:50: quality 0.3V1057 Cyg 20:50–23:05: quality 0.6V1057 Cyg 23:05–02:50: quality 0.7V1057 Cyg 02:50–03:10: quality 0.9V1057 Cyg 03:10–04:05: quality 0.8V1057 Cyg 04:05–04:20: quality 0.7V1057 Cyg 04:20–04:40: quality 0.6V1057 Cyg 04:40–04:55: quality 0.5V1057 Cyg 04:55–05:05: quality 0.4observe V1057 Cyg 03:00–04:40M33M33 20:50–21:00: quality 0.3M33 21:00–21:20: quality 0.4M33 21:20–21:35: quality 0.5M33 21:35–22:35: quality 0.6M33 22:35–00:05: quality 0.7M33 00:05–02:50: quality 0.8M33 02:50–05:40: quality 1.0M33 05:40–06:15: quality 0.5M33 06:15–06:45: quality 0.1observe M33 23:40–01:20scheduleNGC 7000M31M33M45V1057 CygM4220:0022:0000:0002:0004:0006:00

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
19:15–20:20 — nothing worth pointing at — 1.08
20:20–22:00 NGC 7000 1.67 0.55
22:00–23:40 M31 1.67 0.71
23:40–01:20 M33 1.67 0.77
01:20–03:00 M45 1.67 0.86
03:00–04:40 V1057 Cyg 1.67 0.76
04:40–06:15 M42 1.58 0.7
06:15–07:15 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 20:50–05:40 (good) 89.7° at 01:55 80.1° 1.67
M42 Great Orion Nebula 50 unknown 03:30–05:40 (good) 42.9° at 06:45 131.3° 1.58
M45 Seven Sisters 100 unknown 00:05–05:40 (good) 72.5° at 05:00 112.2° 1.67
NGC 7000 North America Nebula 87 unknown 20:50–04:30 (good) 87.2° at 22:10 59.3° 1.67
V1057 Cyg 87 unknown 20:50–04:30 (good) 87.3° at 22:10 59.3° 1.67
M33 Triangulum Pinwheel 100 unknown 21:45–05:40 (good) 79.1° at 02:45 85.0° 1.67
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2034-09-23"

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"}.