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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, 03 July 2026 · astronomical night 23:07 → 03:42 (4.58 h) · Moon 86% (waning gibbous) · weather: ERA5 history

M31M31 01:00–02:00: quality 0.2M31 02:00–03:00: quality 0.4M31 03:00–03:45: quality 0.3M31 03:45–04:35: quality 0.1M31 05:00–05:20: quality 0.1M42M45M45 05:15–05:20: quality 0.1NGC 7000NGC 7000 23:00–23:10: quality 0.1NGC 7000 23:10–23:20: quality 0.2NGC 7000 23:20–00:00: quality 0.1NGC 7000 01:00–02:00: quality 0.3NGC 7000 02:00–03:00: quality 0.4NGC 7000 03:00–03:45: quality 0.3NGC 7000 03:45–04:35: quality 0.1NGC 7000 05:00–05:20: quality 0.1observe NGC 7000 02:00–02:35V1057 CygV1057 Cyg 23:00–23:10: quality 0.1V1057 Cyg 23:10–23:20: quality 0.2V1057 Cyg 23:20–00:00: quality 0.1V1057 Cyg 01:00–02:00: quality 0.3V1057 Cyg 02:00–03:00: quality 0.4V1057 Cyg 03:00–03:45: quality 0.3V1057 Cyg 03:45–04:35: quality 0.1V1057 Cyg 05:00–05:20: quality 0.1observe V1057 Cyg 02:35–03:00M33M33 02:10–02:35: quality 0.2M33 02:35–03:00: quality 0.3M33 03:00–03:05: quality 0.2M33 03:05–03:45: quality 0.3M33 03:45–04:35: quality 0.1M33 05:00–05:20: quality 0.1scheduleNGC 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
20:55–02:00 — nothing worth pointing at — 5.08
02:00–02:35 NGC 7000 0.58 0.41
02:35–03:00 V1057 Cyg 0.42 0.41
03:00–05:55 — nothing worth pointing at — 2.92

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 29 14 02:00–03:00 (marginal) 89.6° at 07:15 67.2° 0.0
M42 Great Orion Nebula 0 0 — 42.9° at 12:10 113.4° 0.0
M45 Seven Sisters 0 0 — 72.5° at 10:20 94.0° 0.0
NGC 7000 North America Nebula 84 27 02:00–03:00 (marginal) 87.2° at 03:35 59.0° 0.58
V1057 Cyg 84 27 02:00–03:00 (marginal) 87.3° at 03:35 58.9° 0.42
M33 Triangulum Pinwheel 14 8 02:55–03:00 (marginal) 79.1° at 08:05 68.9° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-07-03"

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"}.