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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, 15 January 2046 · astronomical night 18:53 → 06:07 (11.22 h) · Moon 55% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:50–18:25: quality 0.1M31 18:25–18:55: quality 0.3M31 18:55–22:40: quality 0.6M31 22:40–23:25: quality 0.5M31 23:25–23:50: quality 0.4M31 23:50–00:05: quality 0.3observe M31 23:15–00:00M42M42 18:30–18:35: quality 0.1M42 18:35–18:55: quality 0.2M42 18:55–19:10: quality 0.4M42 19:10–19:35: quality 0.5M42 19:35–21:55: quality 0.6M42 21:55–01:05: quality 0.7M42 01:05–01:25: quality 0.6M42 01:25–01:35: quality 0.5M42 01:35–01:45: quality 0.6M42 01:45–02:00: quality 0.5M42 02:00–02:05: quality 0.4observe M42 21:55–23:15M45M45 17:50–18:25: quality 0.1M45 18:25–18:55: quality 0.3M45 18:55–22:10: quality 0.6M45 22:10–23:20: quality 0.7M45 23:20–01:25: quality 0.6M45 01:25–01:35: quality 0.5M45 01:35–01:45: quality 0.6M45 01:45–02:00: quality 0.5M45 02:00–02:05: quality 0.4observe M45 00:00–02:05NGC 7000NGC 7000 17:50–18:25: quality 0.1NGC 7000 18:25–18:55: quality 0.3NGC 7000 18:55–19:35: quality 0.6NGC 7000 19:35–20:00: quality 0.5NGC 7000 20:00–20:20: quality 0.4NGC 7000 20:20–20:35: quality 0.3NGC 7000 06:45–07:15: quality 0.1observe NGC 7000 18:25–19:45V1057 CygV1057 Cyg 17:50–18:25: quality 0.1V1057 Cyg 18:25–18:55: quality 0.3V1057 Cyg 18:55–19:35: quality 0.6V1057 Cyg 19:35–20:00: quality 0.5V1057 Cyg 20:00–20:20: quality 0.4V1057 Cyg 20:20–20:35: quality 0.3V1057 Cyg 06:45–07:15: quality 0.1observe V1057 Cyg 19:45–20:35M33M33 17:50–18:25: quality 0.1M33 18:25–18:55: quality 0.3M33 18:55–23:20: quality 0.6M33 23:20–23:45: quality 0.5M33 23:45–00:05: quality 0.4M33 00:05–00:20: quality 0.3observe M33 20:35–21:55scheduleNGC 7000V1057 CygM33M42M4518:0020:0022:0000:0002:0004:0006:00

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
17:15–18:25 — nothing worth pointing at — 1.17
18:25–19:45 NGC 7000 1.33 0.47
19:45–20:35 V1057 Cyg 0.83 0.4
20:35–21:55 M33 1.33 0.59
21:55–23:15 M42 1.33 0.67
23:15–00:00 M31 0.75 0.41
00:00–02:05 M45 2.08 0.59
02:05–07:50 — nothing worth pointing at — 5.75

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 45 unknown 18:55–00:05 (marginal) 89.8° at 17:25 28.4° 0.75
M42 Great Orion Nebula 68 unknown 20:30–01:15 (good) 42.9° at 22:15 59.6° 1.33
M45 Seven Sisters 66 unknown 20:20–01:15 (good) 72.6° at 20:30 27.7° 2.08
NGC 7000 North America Nebula 16 unknown 18:25–20:35 (marginal) 87.2° at 13:40 66.3° 1.33
V1057 Cyg 16 unknown 18:25–20:35 (marginal) 87.2° at 13:40 66.3° 0.83
M33 Triangulum Pinwheel 49 unknown 20:20–21:00 (good) 79.2° at 18:15 14.3° 1.33
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2046-01-15"

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"}.