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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, 04 July 2026 · astronomical night 23:07 → 03:43 (4.61 h) · Moon 78% (waning gibbous) · weather: ERA5 history

M31M31 00:35–01:00: quality 0.2M31 01:00–01:30: quality 0.4M31 01:30–02:00: quality 0.5M31 02:00–02:50: quality 0.4M31 02:50–03:00: quality 0.5M31 03:00–03:45: quality 0.6M31 03:45–04:40: quality 0.3M31 04:40–05:20: quality 0.1observe M31 01:40–02:55M42M45M45 04:55–05:20: quality 0.1NGC 7000NGC 7000 21:35–22:20: quality 0.1NGC 7000 22:20–22:50: quality 0.2NGC 7000 22:50–23:00: quality 0.3NGC 7000 23:00–23:10: quality 0.2NGC 7000 23:10–23:40: quality 0.4NGC 7000 23:40–00:00: quality 0.3NGC 7000 00:00–01:00: quality 0.4NGC 7000 01:00–02:00: quality 0.6NGC 7000 02:00–03:00: quality 0.5NGC 7000 03:00–03:45: quality 0.6NGC 7000 03:45–04:40: quality 0.3NGC 7000 04:40–05:20: quality 0.1observe NGC 7000 23:10–00:25observe NGC 7000 03:45–04:00V1057 CygV1057 Cyg 21:35–22:20: quality 0.1V1057 Cyg 22:20–22:50: quality 0.2V1057 Cyg 22:50–23:00: quality 0.3V1057 Cyg 23:00–23:10: quality 0.2V1057 Cyg 23:10–23:40: quality 0.4V1057 Cyg 23:40–00:00: quality 0.3V1057 Cyg 00:00–01:00: quality 0.4V1057 Cyg 01:00–02:00: quality 0.6V1057 Cyg 02:00–03:00: quality 0.5V1057 Cyg 03:00–03:45: quality 0.6V1057 Cyg 03:45–04:40: quality 0.3V1057 Cyg 04:40–05:20: quality 0.1observe V1057 Cyg 00:25–01:40M33M33 02:10–02:20: quality 0.2M33 02:20–02:50: quality 0.3M33 02:50–03:00: quality 0.4M33 03:00–03:45: quality 0.5M33 03:45–04:40: quality 0.3M33 04:40–05:20: quality 0.1observe M33 02:55–03:45scheduleNGC 7000V1057 CygM31M3322:0000:0002:0004:00

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
20:55–23:10 — nothing worth pointing at — 2.25
23:10–00:25 NGC 7000 1.25 0.39
00:25–01:40 V1057 Cyg 1.25 0.51
01:40–02:55 M31 1.25 0.46
02:55–03:45 M33 0.83 0.49
03:45–04:00 NGC 7000 0.25 0.3
04:00–05:55 — nothing worth pointing at — 1.92

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 28 24 01:00–03:45 (marginal) 89.5° at 07:15 56.8° 1.25
M42 Great Orion Nebula 0 0 — 42.9° at 12:10 103.2° 0.0
M45 Seven Sisters 0 0 — 72.5° at 10:15 81.5° 0.0
NGC 7000 North America Nebula 92 67 01:00–02:00 (good) 87.2° at 03:30 56.8° 1.5
V1057 Cyg 92 67 01:00–02:00 (good) 87.3° at 03:30 56.8° 1.25
M33 Triangulum Pinwheel 13 12 02:35–03:45 (marginal) 79.1° at 08:05 56.9° 0.83

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-07-04"

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"}.