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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 Saturday, 04 January 2031 · astronomical night 18:43 → 06:08 (11.42 h) · Moon 88% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:35–18:10: quality 0.1M31 18:10–18:45: quality 0.2M31 18:45–19:25: quality 0.5M31 19:25–23:55: quality 0.4M31 23:55–00:30: quality 0.3M31 00:30–00:50: quality 0.2observe M31 21:00–22:25M42M42 19:15–20:00: quality 0.2M42 20:00–23:55: quality 0.3M42 23:55–02:05: quality 0.4M42 02:05–02:40: quality 0.3M42 02:40–02:50: quality 0.2observe M42 01:15–02:25M45M45 17:35–18:10: quality 0.1M45 18:10–18:45: quality 0.2M45 18:45–19:35: quality 0.4M45 19:35–23:20: quality 0.3M45 23:20–02:05: quality 0.4M45 02:05–02:40: quality 0.3M45 02:40–02:50: quality 0.2observe M45 23:50–01:15NGC 7000NGC 7000 17:35–18:10: quality 0.1NGC 7000 18:10–18:45: quality 0.3NGC 7000 18:45–19:55: quality 0.6NGC 7000 19:55–20:30: quality 0.5NGC 7000 20:30–21:00: quality 0.4NGC 7000 21:00–21:20: quality 0.3observe NGC 7000 18:10–19:35V1057 CygV1057 Cyg 17:35–18:10: quality 0.1V1057 Cyg 18:10–18:45: quality 0.3V1057 Cyg 18:45–19:55: quality 0.6V1057 Cyg 19:55–20:30: quality 0.5V1057 Cyg 20:30–20:55: quality 0.4V1057 Cyg 20:55–21:20: quality 0.3observe V1057 Cyg 19:35–21:00M33M33 17:35–18:10: quality 0.1M33 18:10–18:45: quality 0.2M33 18:45–21:25: quality 0.4M33 21:25–00:35: quality 0.3M33 00:35–01:00: quality 0.2observe M33 22:25–23:50scheduleNGC 7000V1057 CygM31M33M45M4218:0020:0022:0000:0002:0004:0006:00

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
18:10–19:35 NGC 7000 1.42 0.48
19:35–21:00 V1057 Cyg 1.42 0.49
21:00–22:25 M31 1.42 0.4
22:25–23:50 M33 1.42 0.33
23:50–01:15 M45 1.42 0.36
01:15–02:25 M42 1.17 0.36
02:25–07:50 — nothing worth pointing at — 5.42

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 30 unknown 18:45–00:15 (marginal) 89.7° at 18:10 46.6° 1.42
M42 Great Orion Nebula 23 unknown 21:25–02:25 (marginal) 42.9° at 23:00 34.8° 1.17
M45 Seven Sisters 27 unknown 18:45–02:25 (marginal) 72.5° at 21:15 4.9° 1.42
NGC 7000 North America Nebula 23 unknown 18:45–19:00 (good) 87.2° at 14:25 86.2° 1.42
V1057 Cyg 23 unknown 18:45–19:00 (good) 87.3° at 14:25 86.2° 1.42
M33 Triangulum Pinwheel 23 unknown 18:45–00:15 (marginal) 79.1° at 19:00 34.7° 1.42
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-01-04"

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"}.