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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, 30 August 2031 · astronomical night 21:37 → 05:06 (7.49 h) · Moon 97% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 21:05–21:40: quality 0.2M31 21:40–23:25: quality 0.5M31 23:25–02:40: quality 0.6M31 02:40–05:10: quality 0.7M31 05:10–05:25: quality 0.4M31 05:25–05:45: quality 0.5M31 05:45–06:15: quality 0.2M31 06:15–06:20: quality 0.1observe M31 23:05–00:30M42M42 04:35–04:50: quality 0.4M42 04:50–05:05: quality 0.5M42 05:05–05:10: quality 0.6M42 05:10–05:25: quality 0.3M42 05:25–05:45: quality 0.4M42 05:45–06:20: quality 0.1observe M42 04:45–05:10observe M42 05:40–05:45M45M45 01:00–01:05: quality 0.3M45 01:05–01:25: quality 0.4M45 01:25–01:40: quality 0.5M45 01:40–02:10: quality 0.6M45 02:10–03:30: quality 0.7M45 03:30–05:00: quality 0.8M45 05:00–05:10: quality 0.9M45 05:10–05:25: quality 0.4M45 05:25–05:45: quality 0.5M45 05:45–06:20: quality 0.2observe M45 01:55–03:20observe M45 05:10–05:40NGC 7000NGC 7000 20:30–21:05: quality 0.1NGC 7000 21:05–21:40: quality 0.3NGC 7000 21:40–22:00: quality 0.6NGC 7000 22:00–02:00: quality 0.5NGC 7000 02:00–05:10: quality 0.6NGC 7000 05:10–05:25: quality 0.3NGC 7000 05:25–05:45: quality 0.4NGC 7000 05:45–06:20: quality 0.1observe NGC 7000 21:40–23:05V1057 CygV1057 Cyg 20:30–21:05: quality 0.1V1057 Cyg 21:05–21:40: quality 0.3V1057 Cyg 21:40–22:00: quality 0.6V1057 Cyg 22:00–02:00: quality 0.5V1057 Cyg 02:00–05:10: quality 0.6V1057 Cyg 05:10–05:25: quality 0.3V1057 Cyg 05:25–05:45: quality 0.4V1057 Cyg 05:45–06:20: quality 0.1observe V1057 Cyg 03:20–04:45M33M33 22:25–22:45: quality 0.3M33 22:45–23:10: quality 0.4M33 23:10–00:20: quality 0.5M33 00:20–02:00: quality 0.6M33 02:00–05:00: quality 0.7M33 05:00–05:10: quality 0.8M33 05:10–05:25: quality 0.4M33 05:25–05:45: quality 0.5M33 05:45–06:20: quality 0.2observe M33 00:30–01:55scheduleNGC 7000M31M33M45V1057 Cyg20:0022:0000:0002:0004:0006:00

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
19:55–21:40 — nothing worth pointing at — 1.75
21:40–23:05 NGC 7000 1.42 0.54
23:05–00:30 M31 1.42 0.56
00:30–01:55 M33 1.42 0.6
01:55–03:20 M45 1.42 0.68
03:20–04:45 V1057 Cyg 1.42 0.56
04:45–05:10 M42 0.42 0.49
05:10–05:40 M45 0.5 0.46
05:40–05:45 M42 0.08 0.4
05:45–06:50 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 74 unknown 00:35–05:10 (good) 89.7° at 03:30 71.2° 1.42
M42 Great Orion Nebula 8 unknown 04:35–05:10 (marginal) 42.9° at 08:20 123.7° 0.5
M45 Seven Sisters 69 unknown 01:50–05:10 (good) 72.5° at 06:35 102.2° 1.92
NGC 7000 North America Nebula 57 unknown 21:40–05:10 (marginal) 87.2° at 23:45 55.4° 1.42
V1057 Cyg 57 unknown 21:40–05:10 (marginal) 87.3° at 23:45 55.3° 1.42
M33 Triangulum Pinwheel 76 unknown 01:15–05:10 (good) 79.1° at 04:20 75.3° 1.42
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-08-30"

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"}.