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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 Monday, 10 January 2028 · astronomical night 18:48 → 06:08 (11.33 h) · Moon 98% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:45–18:15: quality 0.1M31 18:15–18:50: quality 0.3M31 18:50–19:55: quality 0.6M31 19:55–21:55: quality 0.5M31 21:55–23:40: quality 0.4M31 23:40–00:10: quality 0.3M31 00:10–00:30: quality 0.2observe M31 20:55–22:05M42M42 18:55–19:45: quality 0.2M42 19:45–20:55: quality 0.3M42 20:55–02:20: quality 0.2M42 02:20–02:30: quality 0.1M45M45 17:45–18:15: quality 0.1M45 18:15–18:50: quality 0.2M45 18:50–19:45: quality 0.4M45 19:45–23:10: quality 0.3M45 23:10–02:20: quality 0.2M45 02:20–02:30: quality 0.1observe M45 20:35–20:55NGC 7000NGC 7000 17:45–18:15: quality 0.1NGC 7000 18:15–18:20: quality 0.4NGC 7000 18:20–18:50: quality 0.3NGC 7000 18:50–19:00: quality 0.7NGC 7000 19:00–20:00: quality 0.6NGC 7000 20:00–20:20: quality 0.5NGC 7000 20:20–20:45: quality 0.4NGC 7000 20:45–21:00: quality 0.3NGC 7000 07:10–07:20: quality 0.1observe NGC 7000 18:15–19:25V1057 CygV1057 Cyg 17:45–18:15: quality 0.1V1057 Cyg 18:15–18:20: quality 0.4V1057 Cyg 18:20–18:50: quality 0.3V1057 Cyg 18:50–19:00: quality 0.7V1057 Cyg 19:00–20:00: quality 0.6V1057 Cyg 20:00–20:20: quality 0.5V1057 Cyg 20:20–20:45: quality 0.4V1057 Cyg 20:45–20:55: quality 0.3V1057 Cyg 07:10–07:20: quality 0.1observe V1057 Cyg 19:25–20:35M33M33 17:45–18:15: quality 0.1M33 18:15–18:50: quality 0.3M33 18:50–21:25: quality 0.5M33 21:25–23:45: quality 0.4M33 23:45–00:15: quality 0.3M33 00:15–00:40: quality 0.2observe M33 22:05–00:00scheduleNGC 7000V1057 CygM31M3318:0020:0022:0000:0002:0004:0006:00

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
17:05–18:15 — nothing worth pointing at — 1.17
18:15–19:25 NGC 7000 1.17 0.49
19:25–20:35 V1057 Cyg 1.17 0.53
20:35–20:55 M45 0.33 0.3
20:55–22:05 M31 1.17 0.47
22:05–00:00 M33 1.92 0.37
00:00–07:50 — nothing worth pointing at — 7.83

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 41 unknown 18:50–23:55 (marginal) 89.6° at 17:45 68.1° 1.17
M42 Great Orion Nebula 11 unknown — 42.9° at 22:40 32.7° 0.0
M45 Seven Sisters 22 unknown 18:50–20:55 (marginal) 72.5° at 20:50 33.4° 0.33
NGC 7000 North America Nebula 23 unknown 18:50–19:45 (good) 87.2° at 14:05 100.3° 1.17
V1057 Cyg 23 unknown 18:50–19:45 (good) 87.3° at 14:05 100.3° 1.17
M33 Triangulum Pinwheel 37 unknown 18:50–00:00 (marginal) 79.1° at 18:40 60.9° 1.92

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-01-10"

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"}.