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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, 10 July 2027 · astronomical night 23:02 → 03:50 (4.79 h) · Moon 52% (first quarter) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 00:15–00:25: quality 0.4M31 00:25–00:40: quality 0.5M31 00:40–00:55: quality 0.6M31 00:55–01:10: quality 0.7M31 01:10–02:05: quality 0.8M31 02:05–03:30: quality 0.9M31 03:30–03:55: quality 1.0M31 03:55–04:45: quality 0.5M31 04:45–05:25: quality 0.2observe M31 01:35–03:15M42M45M45 04:20–04:35: quality 0.2M45 04:35–04:45: quality 0.3M45 04:45–05:25: quality 0.1NGC 7000NGC 7000 21:35–22:15: quality 0.1NGC 7000 22:15–23:05: quality 0.4NGC 7000 23:05–00:20: quality 0.9NGC 7000 00:20–03:55: quality 1.0NGC 7000 03:55–04:45: quality 0.5NGC 7000 04:45–05:25: quality 0.2observe NGC 7000 22:15–23:55V1057 CygV1057 Cyg 21:35–22:15: quality 0.1V1057 Cyg 22:15–23:05: quality 0.4V1057 Cyg 23:05–00:20: quality 0.9V1057 Cyg 00:20–03:55: quality 1.0V1057 Cyg 03:55–04:45: quality 0.5V1057 Cyg 04:45–05:25: quality 0.2observe V1057 Cyg 23:55–01:35M33M33 01:45–01:50: quality 0.4M33 01:50–02:05: quality 0.5M33 02:05–02:20: quality 0.6M33 02:20–02:35: quality 0.7M33 02:35–03:25: quality 0.8M33 03:25–03:55: quality 0.9M33 03:55–04:05: quality 0.4M33 04:05–04:45: quality 0.5M33 04:45–05:25: quality 0.1observe M33 03:15–04:45scheduleNGC 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
20:55–22:15 — nothing worth pointing at — 1.33
22:15–23:55 NGC 7000 1.67 0.65
23:55–01:35 V1057 Cyg 1.67 0.98
01:35–03:15 M31 1.67 0.87
03:15–04:45 M33 1.5 0.64
04:45–06:00 — nothing worth pointing at — 1.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 85 unknown 00:45–03:55 (good) 89.7° at 06:50 150.7° 1.67
M42 Great Orion Nebula 0 unknown — 42.9° at 11:40 111.2° 0.0
M45 Seven Sisters 1 unknown — 72.5° at 09:55 140.8° 0.0
NGC 7000 North America Nebula 100 unknown 23:05–03:55 (good) 87.2° at 03:05 118.5° 1.67
V1057 Cyg 100 unknown 23:05–03:55 (good) 87.3° at 03:05 118.5° 1.67
M33 Triangulum Pinwheel 46 unknown 02:15–03:55 (good) 79.1° at 07:40 160.9° 1.5

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-07-10"

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"}.