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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 Tuesday, 21 August 2040 · astronomical night 21:53 → 04:54 (7.02 h) · Moon 100% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 21:25–21:30: quality 0.1M31 21:30–21:55: quality 0.2M31 21:55–22:10: quality 0.4M31 22:10–23:05: quality 0.5M31 23:05–03:05: quality 0.6M31 03:05–04:55: quality 0.7M31 04:55–05:35: quality 0.4M31 05:35–06:10: quality 0.1observe M31 00:40–02:20M42M42 05:10–05:35: quality 0.2M42 05:35–06:10: quality 0.1M45M45 01:30–01:40: quality 0.3M45 01:40–02:00: quality 0.4M45 02:00–02:15: quality 0.5M45 02:15–03:00: quality 0.6M45 03:00–04:20: quality 0.7M45 04:20–04:55: quality 0.8M45 04:55–05:35: quality 0.4M45 05:35–06:10: quality 0.1observe M45 04:00–05:35NGC 7000NGC 7000 20:45–21:20: quality 0.1NGC 7000 21:20–21:55: quality 0.3NGC 7000 21:55–22:00: quality 0.7NGC 7000 22:00–04:55: quality 0.6NGC 7000 04:55–05:35: quality 0.3NGC 7000 05:35–06:10: quality 0.1observe NGC 7000 21:20–23:00V1057 CygV1057 Cyg 20:45–21:20: quality 0.1V1057 Cyg 21:20–21:55: quality 0.3V1057 Cyg 21:55–04:55: quality 0.6V1057 Cyg 04:55–05:35: quality 0.3V1057 Cyg 05:35–06:10: quality 0.1observe V1057 Cyg 23:00–00:40M33M33 22:55–23:15: quality 0.3M33 23:15–23:40: quality 0.4M33 23:40–00:45: quality 0.5M33 00:45–02:50: quality 0.6M33 02:50–04:55: quality 0.7M33 04:55–05:35: quality 0.4M33 05:35–06:10: quality 0.1observe M33 02:20–04:00scheduleNGC 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
20:10–21:20 — nothing worth pointing at — 1.17
21:20–23:00 NGC 7000 1.67 0.53
23:00–00:40 V1057 Cyg 1.67 0.6
00:40–02:20 M31 1.67 0.63
02:20–04:00 M33 1.67 0.66
04:00–05:35 M45 1.58 0.61
05:35–06:40 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 70 unknown 00:40–04:55 (good) 89.5° at 04:00 72.1° 1.67
M42 Great Orion Nebula 1 unknown — 42.9° at 08:55 113.2° 0.0
M45 Seven Sisters 49 unknown 02:25–04:55 (good) 72.5° at 07:05 97.0° 1.58
NGC 7000 North America Nebula 65 unknown 21:55–23:45 (good) 87.2° at 00:20 63.9° 1.67
V1057 Cyg 65 unknown 21:55–23:45 (good) 87.3° at 00:20 63.8° 1.67
M33 Triangulum Pinwheel 67 unknown 01:50–04:55 (good) 79.2° at 04:55 73.1° 1.67

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2040-08-21"

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"}.