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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 Thursday, 28 September 2045 · astronomical night 20:40 → 05:43 (9.05 h) · Moon 93% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:40–20:10: quality 0.1M31 20:10–20:45: quality 0.2M31 20:45–22:05: quality 0.5M31 22:05–00:25: quality 0.4M31 00:25–05:45: quality 0.3M31 05:45–06:20: quality 0.2observe M31 23:30–01:10M42M42 02:40–03:05: quality 0.2M42 03:05–03:40: quality 0.3M42 03:40–05:45: quality 0.4M42 05:45–06:20: quality 0.2M42 06:20–06:50: quality 0.1observe M42 03:20–05:00M45M45 23:05–23:40: quality 0.2M45 23:40–05:45: quality 0.3M45 05:45–06:20: quality 0.2M45 06:20–06:50: quality 0.1observe M45 05:00–05:45NGC 7000NGC 7000 19:40–19:55: quality 0.2NGC 7000 19:55–20:10: quality 0.1NGC 7000 20:10–20:45: quality 0.4NGC 7000 20:45–22:20: quality 0.7NGC 7000 22:20–00:55: quality 0.6NGC 7000 00:55–02:55: quality 0.5NGC 7000 02:55–04:00: quality 0.4NGC 7000 04:00–04:35: quality 0.3NGC 7000 04:35–04:45: quality 0.2observe NGC 7000 21:50–23:30V1057 CygV1057 Cyg 19:40–19:55: quality 0.2V1057 Cyg 19:55–20:10: quality 0.1V1057 Cyg 20:10–20:45: quality 0.4V1057 Cyg 20:45–22:20: quality 0.7V1057 Cyg 22:20–00:55: quality 0.6V1057 Cyg 00:55–02:55: quality 0.5V1057 Cyg 02:55–04:00: quality 0.4V1057 Cyg 04:00–04:35: quality 0.3V1057 Cyg 04:35–04:45: quality 0.2observe V1057 Cyg 20:10–21:50observe V1057 Cyg 01:55–03:20M33M33 20:30–20:45: quality 0.1M33 20:45–21:05: quality 0.3M33 21:05–00:25: quality 0.4M33 00:25–05:45: quality 0.3M33 05:45–06:20: quality 0.2M33 06:40–06:50: quality 0.1observe M33 01:10–01:55scheduleV1057 CygNGC 7000M31M33V1057 CygM42M4520:0022:0000:0002:0004:0006:00

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
19:05–20:10 — nothing worth pointing at — 1.08
20:10–21:50 V1057 Cyg 1.67 0.58
21:50–23:30 NGC 7000 1.67 0.64
23:30–01:10 M31 1.67 0.35
01:10–01:55 M33 0.75 0.31
01:55–03:20 V1057 Cyg 1.42 0.46
03:20–05:00 M42 1.67 0.37
05:00–05:45 M45 0.75 0.33
05:45–07:20 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 42 unknown 20:45–01:55 (marginal) 89.7° at 01:35 29.6° 1.67
M42 Great Orion Nebula 14 unknown 03:20–05:45 (marginal) 42.9° at 06:25 55.7° 1.67
M45 Seven Sisters 18 unknown 04:20–05:45 (marginal) 72.6° at 04:35 22.9° 0.75
NGC 7000 North America Nebula 72 unknown 20:45–23:35 (good) 87.2° at 21:50 68.8° 1.67
V1057 Cyg 72 unknown 20:45–23:35 (good) 87.3° at 21:50 68.8° 3.08
M33 Triangulum Pinwheel 33 unknown 20:45–01:55 (marginal) 79.2° at 02:25 14.8° 0.75
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2045-09-28"

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"}.