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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 Tuesday, 16 March 2027 · astronomical night 20:01 → 04:57 (8.94 h) · Moon 64% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:00–19:30: quality 0.1M31 19:30–20:05: quality 0.2M31 20:05–20:10: quality 0.3M42M42 19:00–19:30: quality 0.1M42 19:30–20:05: quality 0.2M42 20:05–21:35: quality 0.4M42 21:35–22:05: quality 0.3M42 22:05–22:10: quality 0.2observe M42 21:15–21:50M45M45 19:00–19:30: quality 0.1M45 19:30–19:55: quality 0.3M45 19:55–20:05: quality 0.2M45 20:05–21:20: quality 0.5M45 21:20–21:45: quality 0.4M45 21:45–22:10: quality 0.3observe M45 20:15–21:15observe M45 21:50–21:55NGC 7000NGC 7000 02:50–03:10: quality 0.4NGC 7000 03:10–03:25: quality 0.5NGC 7000 03:25–03:35: quality 0.6NGC 7000 03:35–03:50: quality 0.7NGC 7000 03:50–04:50: quality 0.8NGC 7000 04:50–05:00: quality 0.9NGC 7000 05:00–05:35: quality 0.4NGC 7000 05:35–06:05: quality 0.1observe NGC 7000 02:50–03:50V1057 CygV1057 Cyg 02:55–03:10: quality 0.4V1057 Cyg 03:10–03:25: quality 0.5V1057 Cyg 03:25–03:35: quality 0.6V1057 Cyg 03:35–03:55: quality 0.7V1057 Cyg 03:55–04:50: quality 0.8V1057 Cyg 04:50–05:00: quality 0.9V1057 Cyg 05:00–05:35: quality 0.4V1057 Cyg 05:35–06:05: quality 0.1observe V1057 Cyg 03:50–05:35M33M33 19:00–19:30: quality 0.1M33 19:30–19:35: quality 0.3M33 19:35–20:05: quality 0.2M33 20:05–20:20: quality 0.3observe M33 20:05–20:15scheduleM45NGC 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
18:25–20:05 — nothing worth pointing at — 1.67
20:05–20:15 M33 0.17 0.33
20:15–21:15 M45 1.0 0.47
21:15–21:50 M42 0.58 0.36
21:50–21:55 M45 0.08 0.31
21:55–02:50 — nothing worth pointing at — 4.92
02:50–03:50 NGC 7000 1.0 0.53
03:50–05:35 V1057 Cyg 1.75 0.69
05:35–06:35 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 1 unknown — 89.7° at 13:30 75.5° 0.0
M42 Great Orion Nebula 11 unknown 20:05–21:50 (marginal) 42.9° at 18:20 37.0° 0.58
M45 Seven Sisters 13 unknown 20:05–21:55 (marginal) 72.5° at 16:35 42.7° 1.08
NGC 7000 North America Nebula 39 unknown 03:25–05:00 (good) 87.2° at 09:40 104.3° 1.0
V1057 Cyg 38 unknown 03:30–05:00 (good) 87.3° at 09:40 104.3° 1.75
M33 Triangulum Pinwheel 2 unknown 20:05–20:15 (marginal) 79.1° at 14:20 69.5° 0.17

Left out


💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-03-16"

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"}.