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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 Sunday, 21 March 2027 · astronomical night 20:07 → 04:48 (8.68 h) · Moon 100% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:05–19:35: quality 0.1M31 19:35–19:50: quality 0.2M42M42 19:05–19:35: quality 0.1M42 19:35–20:10: quality 0.3M42 20:10–20:55: quality 0.6M42 20:55–21:15: quality 0.5M42 21:15–21:35: quality 0.4M42 21:35–21:50: quality 0.3observe M42 20:55–21:45M45M45 19:05–19:35: quality 0.1M45 19:35–20:10: quality 0.4M45 20:10–21:00: quality 0.7M45 21:00–21:15: quality 0.6M45 21:15–21:35: quality 0.5M45 21:35–21:50: quality 0.4observe M45 19:35–20:55observe M45 21:45–21:50NGC 7000NGC 7000 02:30–02:35: quality 0.3NGC 7000 02:35–02:50: quality 0.4NGC 7000 02:50–03:10: quality 0.5NGC 7000 03:10–03:30: quality 0.6NGC 7000 03:30–04:15: quality 0.7NGC 7000 04:15–04:50: quality 0.8NGC 7000 04:50–05:25: quality 0.4NGC 7000 05:25–05:55: quality 0.1observe NGC 7000 02:30–03:50V1057 CygV1057 Cyg 02:35–02:55: quality 0.4V1057 Cyg 02:55–03:10: quality 0.5V1057 Cyg 03:10–03:30: quality 0.6V1057 Cyg 03:30–04:15: quality 0.7V1057 Cyg 04:15–04:50: quality 0.8V1057 Cyg 04:50–05:25: quality 0.4V1057 Cyg 05:25–05:55: quality 0.1observe V1057 Cyg 03:50–05:25M33M33 19:05–19:35: quality 0.1M33 19:35–19:40: quality 0.3M33 19:40–20:00: quality 0.2scheduleM45M42NGC 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
18:30–19:35 — nothing worth pointing at — 1.08
19:35–20:55 M45 1.33 0.57
20:55–21:45 M42 0.83 0.43
21:45–21:50 M45 0.08 0.36
21:50–02:30 — nothing worth pointing at — 4.67
02:30–03:50 NGC 7000 1.33 0.54
03:50–05:25 V1057 Cyg 1.58 0.63
05:25–06:25 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 0 unknown — 89.7° at 13:10 136.4° 0.0
M42 Great Orion Nebula 16 unknown 20:10–20:25 (good) 42.9° at 18:00 89.8° 0.83
M45 Seven Sisters 24 unknown 20:10–21:10 (good) 72.5° at 16:15 114.7° 1.42
NGC 7000 North America Nebula 35 unknown 03:20–04:50 (good) 87.2° at 09:20 124.2° 1.33
V1057 Cyg 34 unknown 03:20–04:50 (good) 87.3° at 09:25 124.2° 1.58
M33 Triangulum Pinwheel 1 unknown — 79.1° at 14:00 138.6° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-03-21"

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"}.