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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, 23 August 2040 · astronomical night 21:49 → 04:57 (7.14 h) · Moon 96% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 21:15–21:20: quality 0.2M31 21:20–21:25: quality 0.1M31 21:25–21:50: quality 0.2M31 21:50–22:05: quality 0.4M31 22:05–05:00: quality 0.5M31 05:00–05:40: quality 0.3M31 05:40–06:15: quality 0.1observe M31 00:35–02:15M42M42 05:00–05:05: quality 0.1M42 05:05–05:40: quality 0.2M42 05:40–06:15: quality 0.1M45M45 01:25–01:30: quality 0.2M45 01:30–01:50: quality 0.3M45 01:50–02:15: quality 0.4M45 02:15–04:15: quality 0.5M45 04:15–05:00: quality 0.6M45 05:00–05:40: quality 0.3M45 05:40–06:15: quality 0.1observe M45 03:55–05:00observe M45 05:05–05:40NGC 7000NGC 7000 20:40–21:15: quality 0.1NGC 7000 21:15–21:20: quality 0.5NGC 7000 21:20–21:50: quality 0.4NGC 7000 21:50–22:55: quality 0.7NGC 7000 22:55–02:35: quality 0.6NGC 7000 02:35–05:00: quality 0.5NGC 7000 05:00–05:40: quality 0.2NGC 7000 05:40–06:15: quality 0.1observe NGC 7000 21:15–22:55V1057 CygV1057 Cyg 20:40–21:15: quality 0.1V1057 Cyg 21:15–21:20: quality 0.5V1057 Cyg 21:20–21:50: quality 0.4V1057 Cyg 21:50–22:55: quality 0.7V1057 Cyg 22:55–02:35: quality 0.6V1057 Cyg 02:35–05:00: quality 0.5V1057 Cyg 05:00–05:40: quality 0.2V1057 Cyg 05:40–06:15: quality 0.1observe V1057 Cyg 22:55–00:35M33M33 22:50–22:55: quality 0.2M33 22:55–23:25: quality 0.3M33 23:25–02:10: quality 0.4M33 02:10–05:00: quality 0.5M33 05:00–05:25: quality 0.2M33 05:25–05:40: quality 0.3M33 05:40–06:15: quality 0.1observe M33 02:15–03:55scheduleNGC 7000V1057 CygM31M33M45M4522:0000:0002:0004:0006:00

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
20:05–21:15 — nothing worth pointing at — 1.17
21:15–22:55 NGC 7000 1.67 0.57
22:55–00:35 V1057 Cyg 1.67 0.62
00:35–02:15 M31 1.67 0.49
02:15–03:55 M33 1.67 0.46
03:55–05:00 M45 1.08 0.56
05:00–05:05 — nothing worth pointing at — 0.08
05:05–05:40 M45 0.58 0.3
05:40–06:40 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 48 unknown 21:50–05:00 (marginal) 89.8° at 03:55 50.3° 1.67
M42 Great Orion Nebula 1 unknown — 42.9° at 08:45 87.9° 0.0
M45 Seven Sisters 29 unknown 01:40–05:00 (marginal) 72.5° at 07:00 67.4° 1.67
NGC 7000 North America Nebula 70 unknown 21:50–00:10 (good) 87.2° at 00:10 63.0° 1.67
V1057 Cyg 70 unknown 21:50–00:10 (good) 87.3° at 00:10 63.0° 1.67
M33 Triangulum Pinwheel 35 unknown 23:10–05:00 (marginal) 79.2° at 04:45 46.4° 1.67

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2040-08-23"

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"}.