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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 Thursday, 30 January 2031 · astronomical night 19:09 → 05:58 (10.83 h) · Moon 56% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:05–18:40: quality 0.1M31 18:40–19:10: quality 0.3M31 19:10–20:50: quality 0.6M31 20:50–22:25: quality 0.5M31 22:25–22:50: quality 0.4M31 22:50–23:10: quality 0.3observe M31 19:10–20:15M42M42 18:05–18:40: quality 0.1M42 18:40–19:10: quality 0.3M42 19:10–19:55: quality 0.5M42 19:55–00:15: quality 0.6M42 00:15–00:40: quality 0.5M42 00:40–01:00: quality 0.4M42 01:00–01:10: quality 0.3observe M42 22:25–01:10M45M45 18:05–18:40: quality 0.1M45 18:40–19:10: quality 0.3M45 19:10–00:20: quality 0.6M45 00:20–00:40: quality 0.5M45 00:40–01:00: quality 0.4M45 01:00–01:10: quality 0.3observe M45 21:20–22:25NGC 7000NGC 7000 18:05–18:40: quality 0.1NGC 7000 18:40–18:50: quality 0.3NGC 7000 18:50–19:10: quality 0.2NGC 7000 19:10–19:25: quality 0.4NGC 7000 19:25–19:40: quality 0.3NGC 7000 05:50–06:00: quality 0.4NGC 7000 06:00–06:05: quality 0.2NGC 7000 06:05–06:35: quality 0.3NGC 7000 06:35–07:05: quality 0.1observe NGC 7000 05:50–06:00observe NGC 7000 06:25–06:35V1057 CygV1057 Cyg 18:05–18:40: quality 0.1V1057 Cyg 18:40–18:50: quality 0.3V1057 Cyg 18:50–19:10: quality 0.2V1057 Cyg 19:10–19:25: quality 0.4V1057 Cyg 19:25–19:40: quality 0.3V1057 Cyg 05:50–06:00: quality 0.4V1057 Cyg 06:00–06:05: quality 0.2V1057 Cyg 06:05–06:35: quality 0.3V1057 Cyg 06:35–07:05: quality 0.1M33M33 18:05–18:40: quality 0.1M33 18:40–19:10: quality 0.3M33 19:10–20:40: quality 0.6M33 20:40–22:35: quality 0.5M33 22:35–23:00: quality 0.4M33 23:00–23:20: quality 0.3observe M33 20:15–21:20scheduleM31M33M45M4218:0020:0022:0000:0002:0004:0006:00

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
17:30–19:10 — nothing worth pointing at — 1.67
19:10–20:15 M31 1.08 0.58
20:15–21:20 M33 1.08 0.55
21:20–22:25 M45 1.08 0.61
22:25–01:10 M42 2.75 0.55
01:10–05:50 — nothing worth pointing at — 4.67
05:50–06:00 NGC 7000 0.17 0.43
06:00–06:25 — nothing worth pointing at — 0.42
06:25–06:35 NGC 7000 0.17 0.32
06:35–07:35 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 34 unknown 19:10–23:05 (marginal) 89.6° at 16:25 36.9° 1.08
M42 Great Orion Nebula 53 unknown 22:05–23:50 (good) 42.9° at 21:20 45.3° 2.75
M45 Seven Sisters 55 unknown 20:55–22:35 (good) 72.5° at 19:30 12.3° 1.08
NGC 7000 North America Nebula 7 unknown 19:10–19:40 (marginal) 87.2° at 12:45 77.2° 0.33
V1057 Cyg 7 unknown 19:10–19:40 (marginal) 87.3° at 12:45 77.2° 0.0
M33 Triangulum Pinwheel 34 unknown 19:10–23:10 (marginal) 79.1° at 17:20 22.8° 1.08

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-01-30"

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"}.