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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, 10 January 2041 · astronomical night 18:49 → 06:08 (11.32 h) · Moon 66% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:45–18:20: quality 0.1M31 18:20–18:50: quality 0.3M31 18:50–23:35: quality 0.5M31 23:35–00:05: quality 0.4M31 00:05–00:25: quality 0.3observe M31 20:50–22:15M42M42 18:50–18:55: quality 0.2M42 18:55–19:20: quality 0.3M42 19:20–19:45: quality 0.4M42 19:45–21:50: quality 0.5M42 21:50–01:35: quality 0.6M42 01:35–01:55: quality 0.5M42 01:55–02:25: quality 0.4observe M42 22:15–23:40M45M45 17:45–18:20: quality 0.1M45 18:20–18:30: quality 0.2M45 18:30–18:50: quality 0.3M45 18:50–22:00: quality 0.5M45 22:00–01:35: quality 0.6M45 01:35–01:55: quality 0.5M45 01:55–02:15: quality 0.4M45 02:15–02:20: quality 0.3M45 02:20–02:25: quality 0.4observe M45 00:25–02:25NGC 7000NGC 7000 17:45–18:20: quality 0.1NGC 7000 18:20–18:50: quality 0.3NGC 7000 18:50–19:50: quality 0.6NGC 7000 19:50–20:15: quality 0.5NGC 7000 20:15–20:40: quality 0.4NGC 7000 20:40–20:55: quality 0.3NGC 7000 07:05–07:20: quality 0.1observe NGC 7000 18:20–19:45V1057 CygV1057 Cyg 17:45–18:20: quality 0.1V1057 Cyg 18:20–18:50: quality 0.3V1057 Cyg 18:50–19:50: quality 0.6V1057 Cyg 19:50–20:15: quality 0.5V1057 Cyg 20:15–20:40: quality 0.4V1057 Cyg 20:40–20:55: quality 0.3V1057 Cyg 07:05–07:20: quality 0.1observe V1057 Cyg 19:45–20:50M33M33 17:45–18:20: quality 0.1M33 18:20–18:50: quality 0.3M33 18:50–23:50: quality 0.5M33 23:50–00:15: quality 0.4M33 00:15–00:35: quality 0.3observe M33 23:40–00:25scheduleNGC 7000V1057 CygM31M42M4518:0020:0022:0000:0002:0004:0006:00

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
17:10–18:20 — nothing worth pointing at — 1.17
18:20–19:45 NGC 7000 1.42 0.49
19:45–20:50 V1057 Cyg 1.08 0.44
20:50–22:15 M31 1.42 0.52
22:15–23:40 M42 1.42 0.58
23:40–00:25 M33 0.75 0.4
00:25–02:25 M45 2.0 0.51
02:25–07:50 — nothing worth pointing at — 5.42

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 40 unknown 18:50–00:15 (marginal) 89.7° at 17:45 36.2° 1.42
M42 Great Orion Nebula 59 unknown 19:05–02:25 (marginal) 42.9° at 22:35 49.8° 1.42
M45 Seven Sisters 58 unknown 18:50–02:25 (marginal) 72.5° at 20:45 21.0° 2.0
NGC 7000 North America Nebula 19 unknown 18:50–19:00 (good) 87.2° at 14:00 75.5° 1.42
V1057 Cyg 19 unknown 18:50–19:00 (good) 87.3° at 14:00 75.5° 1.08
M33 Triangulum Pinwheel 39 unknown 18:50–00:25 (marginal) 79.2° at 18:35 21.5° 0.75
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2041-01-10"

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"}.