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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, 12 March 2027 · astronomical night 19:56 → 05:04 (9.14 h) · Moon 21% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:55–19:25: quality 0.1M31 19:25–20:00: quality 0.3M31 20:00–20:10: quality 0.5M31 20:10–20:25: quality 0.4observe M31 19:25–19:40M42M42 18:55–19:25: quality 0.1M42 19:25–20:00: quality 0.4M42 20:00–20:45: quality 0.8M42 20:45–21:40: quality 0.7M42 21:40–21:55: quality 0.6M42 21:55–22:15: quality 0.5M42 22:15–22:25: quality 0.4observe M42 20:50–22:25M45M45 18:55–19:25: quality 0.1M45 19:25–20:00: quality 0.4M45 20:00–20:50: quality 0.8M45 20:50–21:45: quality 0.7M45 21:45–22:00: quality 0.6M45 22:00–22:15: quality 0.5M45 22:15–22:25: quality 0.4observe M45 19:55–20:50NGC 7000NGC 7000 03:10–03:15: quality 0.4NGC 7000 03:15–03:35: quality 0.5NGC 7000 03:35–03:50: quality 0.6NGC 7000 03:50–04:10: quality 0.7NGC 7000 04:10–05:05: quality 0.8NGC 7000 05:05–05:40: quality 0.4NGC 7000 05:40–06:10: quality 0.1observe NGC 7000 03:10–04:05V1057 CygV1057 Cyg 03:10–03:15: quality 0.4V1057 Cyg 03:15–03:35: quality 0.5V1057 Cyg 03:35–03:50: quality 0.6V1057 Cyg 03:50–04:10: quality 0.7V1057 Cyg 04:10–05:05: quality 0.8V1057 Cyg 05:05–05:40: quality 0.4V1057 Cyg 05:40–06:10: quality 0.1observe V1057 Cyg 04:05–05:40M33M33 18:55–19:25: quality 0.1M33 19:25–19:30: quality 0.4M33 19:30–20:00: quality 0.3M33 20:00–20:05: quality 0.6M33 20:05–20:20: quality 0.5M33 20:20–20:40: quality 0.4observe M33 19:40–19:55scheduleM45M42NGC 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
18:20–19:25 — nothing worth pointing at — 1.08
19:25–19:40 M31 0.25 0.32
19:40–19:55 M33 0.25 0.33
19:55–20:50 M45 0.92 0.74
20:50–22:25 M42 1.58 0.62
22:25–03:10 — nothing worth pointing at — 4.75
03:10–04:05 NGC 7000 0.92 0.57
04:05–05:40 V1057 Cyg 1.58 0.67
05:40–06:40 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 5 unknown 20:00–20:25 (marginal) 89.7° at 13:45 33.3° 0.25
M42 Great Orion Nebula 36 unknown 20:00–21:45 (good) 42.9° at 18:35 48.5° 1.58
M45 Seven Sisters 39 unknown 20:00–21:50 (good) 72.5° at 16:50 12.9° 0.92
NGC 7000 North America Nebula 35 unknown 03:45–05:05 (good) 87.2° at 10:00 73.6° 0.92
V1057 Cyg 35 unknown 03:45–05:05 (good) 87.3° at 10:00 73.6° 1.58
M33 Triangulum Pinwheel 8 unknown 20:00–20:40 (marginal) 79.1° at 14:35 19.4° 0.25
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-03-12"

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"}.