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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 Thursday, 13 March 2025 · astronomical night 19:58 → 05:01 (9.06 h) · Moon 100% (full moon) · weather: ERA5 history

M31M31 19:00–19:30: quality 0.1M31 19:30–19:45: quality 0.3M31 19:45–20:00: quality 0.2M31 20:00–20:20: quality 0.1M42M42 19:00–19:30: quality 0.1M42 19:30–20:00: quality 0.3M42 20:00–21:00: quality 0.2M45M45 19:00–19:30: quality 0.1M45 19:30–19:55: quality 0.4M45 19:55–20:00: quality 0.3M45 20:00–21:00: quality 0.2observe M45 19:30–20:00NGC 7000NGC 7000 03:00–03:10: quality 0.3NGC 7000 03:10–03:30: quality 0.4NGC 7000 03:30–03:55: quality 0.5NGC 7000 03:55–04:05: quality 0.6NGC 7000 04:05–05:00: quality 0.7NGC 7000 05:00–05:05: quality 0.4NGC 7000 05:05–05:35: quality 0.2NGC 7000 05:35–06:10: quality 0.1observe NGC 7000 03:00–03:40V1057 CygV1057 Cyg 03:00–03:10: quality 0.3V1057 Cyg 03:10–03:30: quality 0.4V1057 Cyg 03:30–03:55: quality 0.5V1057 Cyg 03:55–04:05: quality 0.6V1057 Cyg 04:05–05:00: quality 0.7V1057 Cyg 05:00–05:05: quality 0.4V1057 Cyg 05:05–05:35: quality 0.2V1057 Cyg 05:35–06:10: quality 0.1observe V1057 Cyg 03:40–05:05M33M33 19:00–19:30: quality 0.1M33 19:30–20:00: quality 0.3M33 20:00–20:30: quality 0.1scheduleNGC 7000V1057 Cyg20:0022:0000:0002:0004:0006:00

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
18:25–19:30 — nothing worth pointing at — 1.08
19:30–20:00 M45 0.5 0.36
20:00–03:00 — nothing worth pointing at — 7.0
03:00–03:40 NGC 7000 0.67 0.4
03:40–05:05 V1057 Cyg 1.42 0.63
05:05–06:35 — nothing worth pointing at — 1.5

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 4 2 — 89.7° at 13:40 130.5° 0.0
M42 Great Orion Nebula 22 5 — 42.9° at 18:30 87.5° 0.0
M45 Seven Sisters 33 8 19:30–20:00 (marginal) 72.5° at 16:45 109.8° 0.5
NGC 7000 North America Nebula 30 25 04:00–05:00 (good) 87.2° at 09:50 121.2° 0.67
V1057 Cyg 30 25 04:00–05:00 (good) 87.3° at 09:50 121.3° 1.42
M33 Triangulum Pinwheel 6 3 19:30–19:45 (marginal) 79.1° at 14:30 132.8° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2025-03-13"

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"}.