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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 Monday, 27 August 2040 · astronomical night 21:41 → 05:03 (7.36 h) · Moon 65% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 21:00–21:10: quality 0.1M31 21:10–21:20: quality 0.2M31 21:20–21:45: quality 0.3M31 21:45–22:00: quality 0.7M31 22:00–22:50: quality 0.8M31 22:50–23:00: quality 0.9M31 23:00–01:30: quality 0.7M31 01:30–05:00: quality 0.6M31 05:00–05:05: quality 0.5M31 05:05–05:40: quality 0.3M31 05:40–06:15: quality 0.1observe M31 00:30–02:10M42M42 04:45–04:50: quality 0.2M42 04:50–05:05: quality 0.3M42 05:05–05:40: quality 0.2M42 05:40–06:15: quality 0.1M45M45 01:10–01:30: quality 0.3M45 01:30–01:55: quality 0.4M45 01:55–05:05: quality 0.5M45 05:05–05:40: quality 0.3M45 05:40–06:15: quality 0.1observe M45 03:50–05:05NGC 7000NGC 7000 20:35–21:10: quality 0.1NGC 7000 21:10–21:45: quality 0.5NGC 7000 21:45–23:00: quality 1.0NGC 7000 23:00–23:10: quality 0.9NGC 7000 23:10–02:50: quality 0.8NGC 7000 02:50–04:20: quality 0.7NGC 7000 04:20–05:05: quality 0.6NGC 7000 05:05–05:40: quality 0.3NGC 7000 05:40–06:15: quality 0.1observe NGC 7000 21:10–22:50observe NGC 7000 05:05–05:15V1057 CygV1057 Cyg 20:35–21:10: quality 0.1V1057 Cyg 21:10–21:45: quality 0.5V1057 Cyg 21:45–23:00: quality 1.0V1057 Cyg 23:00–23:10: quality 0.9V1057 Cyg 23:10–02:50: quality 0.8V1057 Cyg 02:50–04:20: quality 0.7V1057 Cyg 04:20–05:05: quality 0.6V1057 Cyg 05:05–05:40: quality 0.3V1057 Cyg 05:40–06:15: quality 0.1observe V1057 Cyg 22:50–00:30M33M33 22:35–22:40: quality 0.4M33 22:40–22:55: quality 0.5M33 22:55–23:00: quality 0.6M33 23:00–23:05: quality 0.4M33 23:05–23:25: quality 0.5M33 23:25–03:20: quality 0.6M33 03:20–05:05: quality 0.5M33 05:05–05:40: quality 0.3M33 05:40–06:15: quality 0.1observe M33 02:10–03:50scheduleNGC 7000V1057 CygM31M33M4522:0000:0002:0004:0006:00

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
20:00–21:10 — nothing worth pointing at — 1.17
21:10–22:50 NGC 7000 1.67 0.82
22:50–00:30 V1057 Cyg 1.67 0.85
00:30–02:10 M31 1.67 0.66
02:10–03:50 M33 1.67 0.56
03:50–05:05 M45 1.25 0.51
05:05–05:15 NGC 7000 0.17 0.3
05:15–06:45 — nothing worth pointing at — 1.5

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 86 unknown 21:45–02:50 (good) 89.7° at 03:40 39.0° 1.67
M42 Great Orion Nebula 2 unknown — 42.9° at 08:30 43.7° 0.0
M45 Seven Sisters 26 unknown 01:20–05:05 (marginal) 72.5° at 06:40 13.2° 1.25
NGC 7000 North America Nebula 100 unknown 21:45–05:05 (good) 87.2° at 23:55 79.3° 1.83
V1057 Cyg 100 unknown 21:45–05:05 (good) 87.3° at 23:55 79.2° 1.67
M33 Triangulum Pinwheel 56 unknown 22:35–05:05 (marginal) 79.2° at 04:30 24.7° 1.67

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2040-08-27"

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"}.