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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, 04 January 2028 · astronomical night 18:43 → 06:08 (11.42 h) · Moon 49% (first quarter) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:35–18:10: quality 0.1M31 18:10–18:45: quality 0.3M31 18:45–22:35: quality 0.7M31 22:35–00:05: quality 0.6M31 00:05–00:25: quality 0.5M31 00:25–00:35: quality 0.4M31 00:35–00:45: quality 0.5M31 00:45–00:50: quality 0.4M42M42 19:15–19:25: quality 0.3M42 19:25–19:40: quality 0.4M42 19:40–20:00: quality 0.5M42 20:00–20:30: quality 0.6M42 20:30–22:50: quality 0.7M42 22:50–00:35: quality 0.8M42 00:35–00:45: quality 0.9M42 00:45–01:55: quality 0.8M42 01:55–02:15: quality 0.7M42 02:15–02:30: quality 0.6M42 02:30–02:45: quality 0.5M42 02:45–02:50: quality 0.4observe M42 22:40–00:10M45M45 17:35–18:10: quality 0.1M45 18:10–18:45: quality 0.3M45 18:45–21:40: quality 0.7M45 21:40–00:35: quality 0.8M45 00:35–01:15: quality 0.9M45 01:15–02:05: quality 0.8M45 02:05–02:15: quality 0.7M45 02:15–02:30: quality 0.6M45 02:30–02:45: quality 0.5M45 02:45–02:50: quality 0.4observe M45 21:10–22:40observe M45 01:00–02:50NGC 7000NGC 7000 17:35–18:10: quality 0.1NGC 7000 18:10–18:45: quality 0.3NGC 7000 18:45–19:00: quality 0.7NGC 7000 19:00–20:25: quality 0.6NGC 7000 20:25–20:50: quality 0.5NGC 7000 20:50–21:10: quality 0.4NGC 7000 21:10–21:20: quality 0.3observe NGC 7000 18:10–19:40V1057 CygV1057 Cyg 17:35–18:10: quality 0.1V1057 Cyg 18:10–18:45: quality 0.3V1057 Cyg 18:45–19:00: quality 0.7V1057 Cyg 19:00–20:25: quality 0.6V1057 Cyg 20:25–20:50: quality 0.5V1057 Cyg 20:50–21:10: quality 0.4V1057 Cyg 21:10–21:20: quality 0.3observe V1057 Cyg 19:40–21:10M33M33 17:35–18:10: quality 0.1M33 18:10–18:45: quality 0.3M33 18:45–19:00: quality 0.6M33 19:00–23:20: quality 0.7M33 23:20–00:20: quality 0.6M33 00:20–00:35: quality 0.5M33 00:35–00:40: quality 0.6M33 00:40–00:55: quality 0.5M33 00:55–01:00: quality 0.4observe M33 00:10–01:00scheduleNGC 7000V1057 CygM45M42M33M4518:0020:0022:0000:0002:0004:0006:00

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
17:00–18:10 — nothing worth pointing at — 1.17
18:10–19:40 NGC 7000 1.5 0.52
19:40–21:10 V1057 Cyg 1.5 0.53
21:10–22:40 M45 1.5 0.76
22:40–00:10 M42 1.5 0.76
00:10–01:00 M33 0.83 0.52
01:00–02:50 M45 1.83 0.72
02:50–07:50 — nothing worth pointing at — 5.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 69 unknown 18:45–23:50 (good) 89.7° at 18:10 31.8° 0.0
M42 Great Orion Nebula 86 unknown 20:10–02:20 (good) 42.9° at 23:00 75.5° 1.5
M45 Seven Sisters 90 unknown 18:45–02:25 (good) 72.5° at 21:15 47.1° 3.33
NGC 7000 North America Nebula 28 unknown 18:45–20:15 (good) 87.2° at 14:25 58.6° 1.5
V1057 Cyg 28 unknown 18:45–20:15 (good) 87.3° at 14:25 58.5° 1.5
M33 Triangulum Pinwheel 70 unknown 18:45–00:10 (good) 79.1° at 19:00 24.8° 0.83

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-01-04"

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"}.