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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 Monday, 06 July 2026 · astronomical night 23:06 → 03:46 (4.67 h) · Moon 59% (waning gibbous) · weather: ERA5 history

M31M31 00:30–00:40: quality 0.3M31 00:40–01:00: quality 0.4M31 01:00–01:25: quality 0.5M31 01:25–03:50: quality 0.6M31 03:50–04:40: quality 0.3M31 04:40–05:25: quality 0.1observe M31 01:30–03:05M42M45M45 04:35–04:40: quality 0.1M45 04:50–05:25: quality 0.1NGC 7000NGC 7000 21:35–22:20: quality 0.1NGC 7000 22:20–23:10: quality 0.4NGC 7000 23:10–00:25: quality 0.9NGC 7000 00:25–02:15: quality 0.8NGC 7000 02:15–03:50: quality 0.7NGC 7000 03:50–04:00: quality 0.4NGC 7000 04:00–04:40: quality 0.3NGC 7000 04:40–05:25: quality 0.1observe NGC 7000 22:20–23:55observe NGC 7000 03:50–04:40V1057 CygV1057 Cyg 21:35–22:20: quality 0.1V1057 Cyg 22:20–23:10: quality 0.4V1057 Cyg 23:10–00:25: quality 0.9V1057 Cyg 00:25–02:15: quality 0.8V1057 Cyg 02:15–03:50: quality 0.7V1057 Cyg 03:50–04:00: quality 0.4V1057 Cyg 04:00–04:40: quality 0.3V1057 Cyg 04:40–05:25: quality 0.1observe V1057 Cyg 23:55–01:30M33M33 02:00–02:15: quality 0.3M33 02:15–02:40: quality 0.4M33 02:40–03:50: quality 0.5M33 03:50–04:40: quality 0.3M33 04:40–05:25: quality 0.1observe M33 03:05–03:50scheduleNGC 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
20:55–22:20 — nothing worth pointing at — 1.42
22:20–23:55 NGC 7000 1.58 0.64
23:55–01:30 V1057 Cyg 1.58 0.82
01:30–03:05 M31 1.58 0.59
03:05–03:50 M33 0.75 0.53
03:50–04:40 NGC 7000 0.83 0.34
04:40–05:55 — nothing worth pointing at — 1.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 34 33 03:05–03:50 (good) 89.7° at 07:05 37.8° 1.58
M42 Great Orion Nebula 0 0 — 42.9° at 12:00 81.7° 0.0
M45 Seven Sisters 0 0 — 72.5° at 10:10 55.7° 0.0
NGC 7000 North America Nebula 98 95 23:10–03:50 (good) 87.3° at 03:20 58.0° 2.42
V1057 Cyg 98 95 23:10–03:50 (good) 87.3° at 03:20 58.0° 1.58
M33 Triangulum Pinwheel 16 16 02:05–03:50 (marginal) 79.1° at 07:55 33.0° 0.75

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-07-06"

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"}.