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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, 14 July 2026 · astronomical night 22:58 → 03:55 (4.96 h) · Moon 0% (new moon) · weather: ERA5 history

M31M31 23:55–00:05: quality 0.4M31 00:05–00:20: quality 0.5M31 00:20–00:40: quality 0.6M31 00:40–00:55: quality 0.7M31 00:55–01:45: quality 0.8M31 01:45–03:20: quality 0.9M31 03:20–04:00: quality 1.0M31 04:00–04:45: quality 0.5M31 04:45–05:00: quality 0.2M31 05:00–05:30: quality 0.1observe M31 00:50–02:10M42M45M45 04:05–04:15: quality 0.2M45 04:15–04:45: quality 0.3M45 04:45–05:30: quality 0.1observe M45 04:30–04:45NGC 7000NGC 7000 21:30–22:10: quality 0.1NGC 7000 22:10–23:00: quality 0.4NGC 7000 23:00–00:00: quality 0.9NGC 7000 00:00–04:00: quality 1.0NGC 7000 04:00–04:45: quality 0.5NGC 7000 04:45–05:00: quality 0.2NGC 7000 05:00–05:30: quality 0.1observe NGC 7000 22:10–23:30observe NGC 7000 03:30–04:30V1057 CygV1057 Cyg 21:30–22:10: quality 0.1V1057 Cyg 22:10–23:00: quality 0.4V1057 Cyg 23:00–00:00: quality 0.9V1057 Cyg 00:00–04:00: quality 1.0V1057 Cyg 04:00–04:45: quality 0.5V1057 Cyg 04:45–05:00: quality 0.2V1057 Cyg 05:00–05:30: quality 0.1observe V1057 Cyg 23:30–00:50M33M33 01:30–01:35: quality 0.4M33 01:35–01:50: quality 0.5M33 01:50–02:05: quality 0.6M33 02:05–02:20: quality 0.7M33 02:20–03:15: quality 0.8M33 03:15–04:00: quality 0.9M33 04:00–04:45: quality 0.5M33 04:45–05:30: quality 0.1observe M33 02:10–03:30scheduleNGC 7000V1057 CygM31M33NGC 700022:0000:0002:0004:00

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
20:50–22:10 — nothing worth pointing at — 1.33
22:10–23:30 NGC 7000 1.33 0.59
23:30–00:50 V1057 Cyg 1.33 0.97
00:50–02:10 M31 1.33 0.83
02:10–03:30 M33 1.33 0.81
03:30–04:30 NGC 7000 1.0 0.74
04:30–04:45 M45 0.25 0.32
04:45–06:00 — nothing worth pointing at — 1.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 96 95 00:30–04:00 (good) 89.6° at 06:35 90.3° 1.33
M42 Great Orion Nebula 0 0 — 42.9° at 11:25 47.3° 0.0
M45 Seven Sisters 2 2 04:30–04:45 (marginal) 72.5° at 09:35 60.0° 0.25
NGC 7000 North America Nebula 100 98 23:00–04:00 (good) 87.3° at 02:50 112.0° 2.33
V1057 Cyg 100 98 23:00–04:00 (good) 87.3° at 02:50 112.1° 1.33
M33 Triangulum Pinwheel 54 53 01:55–04:00 (good) 79.1° at 07:25 86.0° 1.33

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-07-14"

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"}.