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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, 07 March 2026 · astronomical night 19:50 → 05:12 (9.37 h) · Moon 81% (waning gibbous) · weather: ERA5 history

M31M31 18:50–19:20: quality 0.1M31 19:20–19:50: quality 0.4M31 19:50–19:55: quality 0.3M31 19:55–20:00: quality 0.7M31 20:00–20:05: quality 0.5M31 20:05–20:30: quality 0.4M31 20:30–20:45: quality 0.3observe M31 19:20–20:15M42M42 18:50–19:20: quality 0.1M42 19:20–19:55: quality 0.4M42 19:55–20:00: quality 0.8M42 20:00–21:50: quality 0.6M42 21:50–22:00: quality 0.5M42 22:00–22:20: quality 0.6M42 22:20–22:35: quality 0.5M42 22:35–22:45: quality 0.4observe M42 21:45–22:45M45M45 18:50–19:20: quality 0.1M45 19:20–19:55: quality 0.5M45 19:55–20:00: quality 0.9M45 20:00–20:10: quality 0.7M45 20:10–21:55: quality 0.6M45 21:55–22:00: quality 0.5M45 22:00–22:05: quality 0.7M45 22:05–22:20: quality 0.6M45 22:20–22:35: quality 0.5M45 22:35–22:45: quality 0.4observe M45 20:50–21:45NGC 7000NGC 7000 03:25–03:30: quality 0.3NGC 7000 03:30–03:50: quality 0.4NGC 7000 03:50–04:10: quality 0.5NGC 7000 04:10–04:25: quality 0.6NGC 7000 04:25–05:00: quality 0.7NGC 7000 05:00–05:10: quality 0.4NGC 7000 05:10–05:15: quality 0.5NGC 7000 05:15–05:50: quality 0.2NGC 7000 05:50–06:00: quality 0.1observe NGC 7000 03:25–04:20V1057 CygV1057 Cyg 03:25–03:30: quality 0.3V1057 Cyg 03:30–03:50: quality 0.4V1057 Cyg 03:50–04:10: quality 0.5V1057 Cyg 04:10–04:30: quality 0.6V1057 Cyg 04:30–05:00: quality 0.7V1057 Cyg 05:00–05:10: quality 0.4V1057 Cyg 05:10–05:15: quality 0.5V1057 Cyg 05:15–05:50: quality 0.2V1057 Cyg 05:50–06:00: quality 0.1observe V1057 Cyg 04:20–05:15M33M33 18:50–19:20: quality 0.1M33 19:20–19:55: quality 0.4M33 19:55–20:00: quality 0.8M33 20:00–20:20: quality 0.5M33 20:20–20:40: quality 0.4M33 20:40–20:55: quality 0.3observe M33 20:15–20:50scheduleM31M45M42NGC 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
19:20–20:15 M31 0.92 0.42
20:15–20:50 M33 0.58 0.4
20:50–21:45 M45 0.92 0.6
21:45–22:45 M42 1.0 0.52
22:45–03:25 — nothing worth pointing at — 4.67
03:25–04:20 NGC 7000 0.92 0.47
04:20–05:15 V1057 Cyg 0.92 0.62
05:15–06:45 — nothing worth pointing at — 1.5

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 13 11 19:55–20:00 (good) 89.7° at 14:05 149.3° 0.92
M42 Great Orion Nebula 54 43 19:55–20:30 (good) 42.9° at 18:55 126.5° 1.0
M45 Seven Sisters 61 48 19:55–21:25 (good) 72.5° at 17:10 159.7° 0.92
NGC 7000 North America Nebula 24 20 04:20–05:00 (good) 87.2° at 10:15 109.6° 0.92
V1057 Cyg 24 20 04:20–05:00 (good) 87.3° at 10:15 109.6° 0.92
M33 Triangulum Pinwheel 19 15 19:55–20:00 (good) 79.1° at 14:55 164.0° 0.58
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-03-07"

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"}.