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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, 06 March 2026 · astronomical night 19:49 → 05:14 (9.41 h) · Moon 88% (waning gibbous) · weather: ERA5 history

M31M31 18:45–19:20: quality 0.1M31 19:20–19:50: quality 0.4M31 19:50–19:55: quality 0.7M31 19:55–20:00: quality 0.6M31 20:00–20:20: quality 0.5M31 20:20–20:40: quality 0.4M31 20:40–20:50: quality 0.3M42M42 18:45–19:20: quality 0.1M42 19:20–19:50: quality 0.4M42 19:50–20:00: quality 0.8M42 20:00–20:30: quality 0.7M42 20:30–21:00: quality 0.6M42 21:00–22:00: quality 0.4M42 22:00–22:30: quality 0.3M42 22:30–22:50: quality 0.2observe M42 20:50–22:10M45M45 18:45–19:00: quality 0.2M45 19:00–19:20: quality 0.1M45 19:20–19:50: quality 0.4M45 19:50–20:00: quality 0.9M45 20:00–21:00: quality 0.7M45 21:00–21:05: quality 0.5M45 21:05–22:05: quality 0.4M45 22:05–22:30: quality 0.3M45 22:30–22:50: quality 0.2observe M45 19:20–20:10observe M45 22:10–22:20NGC 7000NGC 7000 03:30–03:35: quality 0.3NGC 7000 03:35–04:15: quality 0.4NGC 7000 04:15–04:35: quality 0.5NGC 7000 04:35–05:00: quality 0.6NGC 7000 05:00–05:15: quality 0.3NGC 7000 05:15–05:50: quality 0.2NGC 7000 06:00–06:20: quality 0.1observe NGC 7000 03:30–04:20V1057 CygV1057 Cyg 03:30–03:35: quality 0.3V1057 Cyg 03:35–04:15: quality 0.4V1057 Cyg 04:15–04:35: quality 0.5V1057 Cyg 04:35–05:00: quality 0.6V1057 Cyg 05:00–05:15: quality 0.3V1057 Cyg 05:15–05:50: quality 0.2V1057 Cyg 06:00–06:20: quality 0.1observe V1057 Cyg 04:20–05:15M33M33 18:45–19:20: quality 0.1M33 19:20–19:50: quality 0.4M33 19:50–20:00: quality 0.7M33 20:00–20:15: quality 0.6M33 20:15–20:30: quality 0.5M33 20:30–20:50: quality 0.4M33 20:50–21:00: quality 0.3observe M33 20:10–20:50scheduleM45M42NGC 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
18:15–19:20 — nothing worth pointing at — 1.08
19:20–20:10 M45 0.83 0.58
20:10–20:50 M33 0.67 0.46
20:50–22:10 M42 1.33 0.43
22:10–22:20 M45 0.17 0.31
22:20–03:30 — nothing worth pointing at — 5.17
03:30–04:20 NGC 7000 0.83 0.41
04:20–05:15 V1057 Cyg 0.92 0.48
05:15–06:50 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 16 13 19:50–20:00 (good) 89.6° at 14:10 150.6° 0.0
M42 Great Orion Nebula 55 37 19:50–21:00 (good) 42.9° at 19:00 117.3° 1.33
M45 Seven Sisters 63 42 19:50–21:00 (good) 72.5° at 17:10 147.5° 1.0
NGC 7000 North America Nebula 24 17 03:30–05:15 (marginal) 87.3° at 10:20 114.7° 0.83
V1057 Cyg 24 17 03:30–05:15 (marginal) 87.3° at 10:20 114.8° 0.92
M33 Triangulum Pinwheel 21 17 19:50–20:05 (good) 79.1° at 15:00 163.5° 0.67

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-03-06"

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"}.