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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, 05 January 2031 · astronomical night 18:44 → 06:08 (11.4 h) · Moon 93% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:40–18:15: quality 0.1M31 18:15–18:45: quality 0.3M31 18:45–20:55: quality 0.5M31 20:55–23:50: quality 0.4M31 23:50–00:25: quality 0.3M31 00:25–00:45: quality 0.2observe M31 20:35–21:45M42M42 19:10–19:15: quality 0.1M42 19:15–22:50: quality 0.2M42 22:50–02:15: quality 0.3M42 02:15–02:45: quality 0.2M45M45 17:40–18:15: quality 0.1M45 18:15–18:45: quality 0.2M45 18:45–19:15: quality 0.4M45 19:15–02:20: quality 0.3M45 02:20–02:45: quality 0.2observe M45 01:15–01:55NGC 7000NGC 7000 17:40–18:15: quality 0.1NGC 7000 18:15–18:45: quality 0.3NGC 7000 18:45–20:10: quality 0.6NGC 7000 20:10–20:35: quality 0.5NGC 7000 20:35–20:55: quality 0.4NGC 7000 20:55–21:15: quality 0.3observe NGC 7000 18:15–19:25V1057 CygV1057 Cyg 17:40–18:15: quality 0.1V1057 Cyg 18:15–18:45: quality 0.3V1057 Cyg 18:45–20:10: quality 0.6V1057 Cyg 20:10–20:35: quality 0.5V1057 Cyg 20:35–20:55: quality 0.4V1057 Cyg 20:55–21:15: quality 0.3observe V1057 Cyg 19:25–20:35M33M33 17:40–18:15: quality 0.1M33 18:15–18:45: quality 0.2M33 18:45–19:00: quality 0.5M33 19:00–22:15: quality 0.4M33 22:15–00:30: quality 0.3M33 00:30–00:55: quality 0.2observe M33 21:45–00:10scheduleNGC 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
17:00–18:15 — nothing worth pointing at — 1.25
18:15–19:25 NGC 7000 1.17 0.5
19:25–20:35 V1057 Cyg 1.17 0.55
20:35–21:45 M31 1.17 0.44
21:45–00:10 M33 2.42 0.34
00:10–01:15 — nothing worth pointing at — 1.08
01:15–01:55 M45 0.67 0.3
01:55–07:50 — nothing worth pointing at — 5.92

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 34 unknown 18:45–00:05 (marginal) 89.7° at 18:05 55.6° 1.17
M42 Great Orion Nebula 14 unknown 01:40–01:45 (marginal) 42.9° at 22:55 29.1° 0.0
M45 Seven Sisters 22 unknown 18:45–20:35 (marginal) 72.5° at 21:10 15.7° 0.67
NGC 7000 North America Nebula 25 unknown 18:45–19:30 (good) 87.2° at 14:20 93.4° 1.17
V1057 Cyg 25 unknown 18:45–19:30 (good) 87.3° at 14:20 93.4° 1.17
M33 Triangulum Pinwheel 27 unknown 18:45–00:10 (marginal) 79.1° at 18:55 45.4° 2.42

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-01-05"

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"}.