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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 Saturday, 08 August 2026 · astronomical night 22:19 → 04:34 (6.24 h) · Moon 19% (waning crescent) · weather: ERA5 history

M31M31 22:20–22:35: quality 0.4M31 22:35–22:55: quality 0.5M31 22:55–23:10: quality 0.6M31 23:10–23:55: quality 0.7M31 23:55–01:00: quality 0.8M31 01:00–01:55: quality 0.6M31 01:55–02:00: quality 0.7M31 02:00–03:00: quality 0.8M31 03:00–04:35: quality 0.5M31 04:35–05:00: quality 0.3M31 05:00–05:20: quality 0.4M31 05:20–05:55: quality 0.1observe M31 00:40–02:10M42M45M45 02:25–02:35: quality 0.3M45 02:35–02:50: quality 0.4M45 02:50–03:00: quality 0.5M45 03:00–03:05: quality 0.3M45 03:05–04:35: quality 0.4M45 04:35–05:00: quality 0.2M45 05:00–05:20: quality 0.4M45 05:20–05:55: quality 0.1observe M45 03:40–04:35observe M45 05:00–05:20NGC 7000NGC 7000 21:05–21:40: quality 0.1NGC 7000 21:40–22:20: quality 0.4NGC 7000 22:20–01:00: quality 0.9NGC 7000 01:00–02:00: quality 0.7NGC 7000 02:00–03:00: quality 0.8NGC 7000 03:00–04:35: quality 0.5NGC 7000 04:35–05:00: quality 0.3NGC 7000 05:00–05:20: quality 0.4NGC 7000 05:20–05:55: quality 0.1observe NGC 7000 21:40–23:10V1057 CygV1057 Cyg 21:05–21:40: quality 0.1V1057 Cyg 21:40–22:20: quality 0.4V1057 Cyg 22:20–01:00: quality 0.9V1057 Cyg 01:00–02:00: quality 0.7V1057 Cyg 02:00–03:00: quality 0.8V1057 Cyg 03:00–04:35: quality 0.5V1057 Cyg 04:35–05:00: quality 0.3V1057 Cyg 05:00–05:20: quality 0.4V1057 Cyg 05:20–05:55: quality 0.1observe V1057 Cyg 23:10–00:40M33M33 23:50–00:05: quality 0.4M33 00:05–00:20: quality 0.5M33 00:20–00:35: quality 0.6M33 00:35–01:00: quality 0.7M33 01:00–01:10: quality 0.5M33 01:10–02:00: quality 0.6M33 02:00–03:00: quality 0.7M33 03:00–04:35: quality 0.5M33 04:35–05:00: quality 0.3M33 05:00–05:20: quality 0.4M33 05:20–05:55: quality 0.1observe M33 02:10–03:40scheduleNGC 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
20:30–21:40 — nothing worth pointing at — 1.17
21:40–23:10 NGC 7000 1.5 0.68
23:10–00:40 V1057 Cyg 1.5 0.9
00:40–02:10 M31 1.5 0.69
02:10–03:40 M33 1.5 0.62
03:40–04:35 M45 0.92 0.43
04:35–05:00 — nothing worth pointing at — 0.42
05:00–05:20 M45 0.33 0.36
05:20–06:25 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 98 74 23:00–03:00 (good) 89.7° at 04:55 59.6° 1.5
M42 Great Orion Nebula 0 0 — 42.9° at 09:45 33.5° 0.0
M45 Seven Sisters 36 23 02:25–04:35 (marginal) 72.5° at 08:00 24.5° 1.25
NGC 7000 North America Nebula 100 77 22:20–03:00 (good) 87.3° at 01:10 93.8° 1.5
V1057 Cyg 100 77 22:20–03:00 (good) 87.3° at 01:10 93.9° 1.5
M33 Triangulum Pinwheel 92 65 02:00–03:00 (good) 79.1° at 05:45 51.8° 1.5

Left out

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

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"}.