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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, 26 January 2040 · astronomical night 19:04 → 06:01 (10.96 h) · Moon 95% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:00–18:35: quality 0.1M31 18:35–19:05: quality 0.3M31 19:05–20:10: quality 0.6M31 20:10–22:05: quality 0.5M31 22:05–22:45: quality 0.4M31 22:45–23:15: quality 0.3M31 23:15–23:25: quality 0.2observe M31 18:50–19:20observe M31 19:55–20:25observe M31 22:05–23:00M42M42 18:35–18:45: quality 0.1M42 18:45–19:05: quality 0.2M42 19:05–00:20: quality 0.3M42 00:20–01:20: quality 0.2M42 01:20–01:25: quality 0.1M45M45 18:00–18:35: quality 0.1M45 18:35–19:05: quality 0.2M45 19:05–21:00: quality 0.4M45 21:00–00:45: quality 0.3M45 00:45–01:25: quality 0.2observe M45 21:15–22:05NGC 7000NGC 7000 18:00–18:35: quality 0.1NGC 7000 18:35–19:05: quality 0.3NGC 7000 19:05–19:25: quality 0.5NGC 7000 19:25–19:45: quality 0.4NGC 7000 19:45–19:55: quality 0.3NGC 7000 06:05–06:30: quality 0.2NGC 7000 06:30–06:35: quality 0.3NGC 7000 06:35–07:10: quality 0.1observe NGC 7000 18:35–18:50observe NGC 7000 19:20–19:55V1057 CygV1057 Cyg 18:00–18:35: quality 0.1V1057 Cyg 18:35–19:05: quality 0.3V1057 Cyg 19:05–19:25: quality 0.5V1057 Cyg 19:25–19:45: quality 0.4V1057 Cyg 19:45–19:55: quality 0.3V1057 Cyg 06:05–06:30: quality 0.2V1057 Cyg 06:30–06:35: quality 0.3V1057 Cyg 06:35–07:10: quality 0.1M33M33 18:00–18:35: quality 0.1M33 18:35–19:05: quality 0.3M33 19:05–19:50: quality 0.6M33 19:50–21:35: quality 0.5M33 21:35–22:55: quality 0.4M33 22:55–23:25: quality 0.3M33 23:25–23:35: quality 0.2observe M33 20:25–21:15observe M33 23:00–23:10scheduleM33M45M3118:0020:0022:0000:0002:0004:0006:00

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
17:25–18:35 — nothing worth pointing at — 1.17
18:35–18:50 NGC 7000 0.25 0.32
18:50–19:20 M31 0.5 0.46
19:20–19:55 NGC 7000 0.58 0.39
19:55–20:25 M31 0.5 0.55
20:25–21:15 M33 0.83 0.49
21:15–22:05 M45 0.83 0.33
22:05–23:00 M31 0.92 0.39
23:00–23:10 M33 0.17 0.31
23:10–07:40 — nothing worth pointing at — 8.5

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 35 unknown 19:05–19:25 (good) 89.7° at 16:45 74.1° 1.92
M42 Great Orion Nebula 14 unknown 19:05–19:50 (marginal) 42.9° at 21:35 35.3° 0.0
M45 Seven Sisters 23 unknown 19:05–23:00 (marginal) 72.5° at 19:45 40.6° 0.83
NGC 7000 North America Nebula 10 unknown 19:05–19:55 (marginal) 87.2° at 13:00 103.9° 0.83
V1057 Cyg 9 unknown 19:05–19:55 (marginal) 87.3° at 13:00 103.9° 0.0
M33 Triangulum Pinwheel 32 unknown 19:05–23:10 (marginal) 79.2° at 17:35 67.6° 1.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2040-01-26"

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"}.