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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 Friday, 27 July 2040 · astronomical night 22:39 → 04:16 (5.61 h) · Moon 80% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 23:05–23:10: quality 0.4M31 23:10–23:20: quality 0.5M31 23:20–23:40: quality 0.4M31 23:40–00:10: quality 0.5M31 00:10–04:00: quality 0.6M31 04:00–04:20: quality 0.5M31 04:20–05:05: quality 0.3M31 05:05–05:45: quality 0.1observe M31 00:50–02:15M42M45M45 03:10–03:30: quality 0.3M45 03:30–03:55: quality 0.4M45 03:55–04:20: quality 0.5M45 04:20–05:05: quality 0.3M45 05:05–05:45: quality 0.1observe M45 03:40–04:20NGC 7000NGC 7000 21:20–22:00: quality 0.1NGC 7000 22:00–22:40: quality 0.5NGC 7000 22:40–23:20: quality 1.0NGC 7000 23:20–00:00: quality 0.8NGC 7000 00:00–03:00: quality 0.7NGC 7000 03:00–04:20: quality 0.6NGC 7000 04:20–05:05: quality 0.3NGC 7000 05:05–05:45: quality 0.1observe NGC 7000 22:00–23:25observe NGC 7000 04:20–05:05V1057 CygV1057 Cyg 21:20–22:00: quality 0.1V1057 Cyg 22:00–22:40: quality 0.5V1057 Cyg 22:40–23:20: quality 1.0V1057 Cyg 23:20–00:00: quality 0.8V1057 Cyg 00:00–02:55: quality 0.7V1057 Cyg 02:55–04:20: quality 0.6V1057 Cyg 04:20–05:05: quality 0.3V1057 Cyg 05:05–05:45: quality 0.1observe V1057 Cyg 23:25–00:50M33M33 00:35–01:00: quality 0.3M33 01:00–01:25: quality 0.4M33 01:25–04:20: quality 0.5M33 04:20–05:05: quality 0.3M33 05:05–05:45: quality 0.1observe M33 02:15–03:40scheduleNGC 7000V1057 CygM31M33M45NGC 700022:0000:0002:0004:0006:00

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
20:40–22:00 — nothing worth pointing at — 1.33
22:00–23:25 NGC 7000 1.42 0.73
23:25–00:50 V1057 Cyg 1.42 0.75
00:50–02:15 M31 1.42 0.56
02:15–03:40 M33 1.42 0.5
03:40–04:20 M45 0.67 0.46
04:20–05:05 NGC 7000 0.75 0.31
05:05–06:15 — nothing worth pointing at — 1.17

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 44 unknown 23:05–04:20 (marginal) 89.8° at 05:40 46.7° 1.42
M42 Great Orion Nebula 0 unknown — 42.9° at 10:30 82.6° 0.0
M45 Seven Sisters 9 unknown 03:20–04:20 (marginal) 72.5° at 08:45 61.4° 0.67
NGC 7000 North America Nebula 100 unknown 22:40–04:20 (good) 87.2° at 01:55 64.0° 2.17
V1057 Cyg 100 unknown 22:40–04:20 (good) 87.3° at 01:55 63.9° 1.42
M33 Triangulum Pinwheel 26 unknown 00:45–04:20 (marginal) 79.2° at 06:30 41.3° 1.42

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2040-07-27"

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"}.