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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, 14 August 2026 · astronomical night 22:08 → 04:43 (6.58 h) · Moon 6% (waxing crescent) · weather: ERA5 history

M31M31 21:55–22:10: quality 0.2M31 22:10–22:25: quality 0.5M31 22:25–22:45: quality 0.6M31 22:45–23:00: quality 0.7M31 23:00–00:55: quality 0.8M31 00:55–01:00: quality 0.9M31 01:00–01:45: quality 0.6M31 01:45–02:00: quality 0.7M31 02:00–03:00: quality 0.6M31 04:00–04:45: quality 0.7M31 04:45–05:25: quality 0.4M31 05:25–06:00: quality 0.1observe M31 00:20–01:45M42M42 05:40–06:00: quality 0.1M45M45 02:00–02:05: quality 0.2M45 02:05–02:30: quality 0.3M45 02:30–02:55: quality 0.4M45 02:55–03:00: quality 0.5M45 04:00–04:30: quality 0.6M45 04:30–04:45: quality 0.7M45 04:45–05:00: quality 0.3M45 05:00–05:25: quality 0.4M45 05:25–06:00: quality 0.1observe M45 04:30–05:25NGC 7000NGC 7000 20:55–21:30: quality 0.1NGC 7000 21:30–22:00: quality 0.4NGC 7000 22:00–22:10: quality 0.5NGC 7000 22:10–23:00: quality 0.9NGC 7000 23:00–00:00: quality 1.0NGC 7000 00:00–01:00: quality 0.9NGC 7000 01:00–02:00: quality 0.7NGC 7000 02:00–03:00: quality 0.6NGC 7000 04:00–04:45: quality 0.7NGC 7000 04:45–05:00: quality 0.3NGC 7000 05:00–05:25: quality 0.4NGC 7000 05:25–06:00: quality 0.1observe NGC 7000 21:30–22:55V1057 CygV1057 Cyg 20:55–21:30: quality 0.1V1057 Cyg 21:30–22:00: quality 0.4V1057 Cyg 22:00–22:10: quality 0.5V1057 Cyg 22:10–23:00: quality 0.9V1057 Cyg 23:00–00:00: quality 1.0V1057 Cyg 00:00–01:00: quality 0.9V1057 Cyg 01:00–02:00: quality 0.7V1057 Cyg 02:00–03:00: quality 0.6V1057 Cyg 04:00–04:45: quality 0.7V1057 Cyg 04:45–05:00: quality 0.3V1057 Cyg 05:00–05:25: quality 0.4V1057 Cyg 05:25–06:00: quality 0.1observe V1057 Cyg 22:55–00:20M33M33 23:25–23:35: quality 0.4M33 23:35–23:50: quality 0.5M33 23:50–00:10: quality 0.6M33 00:10–00:40: quality 0.7M33 00:40–01:00: quality 0.8M33 01:00–02:00: quality 0.6M33 02:00–02:25: quality 0.5M33 02:25–03:00: quality 0.6M33 04:00–04:45: quality 0.7M33 04:45–05:25: quality 0.4M33 05:25–06:00: quality 0.1observe M33 01:45–03:00observe M33 04:00–04:30scheduleNGC 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
20:20–21:30 — nothing worth pointing at — 1.17
21:30–22:55 NGC 7000 1.42 0.68
22:55–00:20 V1057 Cyg 1.42 0.94
00:20–01:45 M31 1.42 0.73
01:45–03:00 M33 1.25 0.56
03:00–04:00 — nothing worth pointing at — 1.0
04:00–04:30 M33 0.5 0.71
04:30–05:25 M45 0.92 0.45
05:25–06:30 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 66 22:35–02:00 (good) 89.6° at 04:30 133.4° 1.42
M42 Great Orion Nebula 0 0 — 42.9° at 09:25 87.4° 0.0
M45 Seven Sisters 59 27 04:00–04:45 (good) 72.5° at 07:35 111.3° 0.92
NGC 7000 North America Nebula 100 68 22:10–02:00 (good) 87.2° at 00:45 123.7° 1.42
V1057 Cyg 100 68 22:10–02:00 (good) 87.3° at 00:50 123.7° 1.42
M33 Triangulum Pinwheel 100 59 00:05–01:00 (good) 79.1° at 05:20 135.2° 1.75

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-08-14"

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"}.