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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, 23 January 2040 · astronomical night 19:01 → 06:03 (11.04 h) · Moon 76% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:55–18:30: quality 0.1M31 18:30–19:05: quality 0.3M31 19:05–21:35: quality 0.5M31 21:35–23:00: quality 0.4M31 23:00–23:30: quality 0.3M31 23:30–23:40: quality 0.2observe M31 20:05–21:10M42M42 18:30–18:45: quality 0.1M42 18:45–19:05: quality 0.2M42 19:05–01:05: quality 0.4M42 01:05–01:35: quality 0.3observe M42 23:20–01:20M45M45 17:55–18:30: quality 0.1M45 18:30–19:05: quality 0.2M45 19:05–01:05: quality 0.4M45 01:05–01:35: quality 0.3observe M45 22:15–23:20NGC 7000NGC 7000 17:55–18:30: quality 0.1NGC 7000 18:30–19:05: quality 0.3NGC 7000 19:05–19:25: quality 0.5NGC 7000 19:25–19:50: quality 0.4NGC 7000 19:50–20:05: quality 0.3NGC 7000 06:15–06:35: quality 0.2NGC 7000 06:35–06:40: quality 0.3NGC 7000 06:40–07:15: quality 0.1observe NGC 7000 18:30–18:35observe NGC 7000 19:05–20:05V1057 CygV1057 Cyg 17:55–18:30: quality 0.1V1057 Cyg 18:30–19:05: quality 0.3V1057 Cyg 19:05–19:25: quality 0.5V1057 Cyg 19:25–19:50: quality 0.4V1057 Cyg 19:50–20:05: quality 0.3V1057 Cyg 06:20–06:35: quality 0.2V1057 Cyg 06:35–06:40: quality 0.3V1057 Cyg 06:40–07:15: quality 0.1M33M33 17:55–18:30: quality 0.1M33 18:30–19:05: quality 0.2M33 19:05–20:10: quality 0.5M33 20:10–23:05: quality 0.4M33 23:05–23:35: quality 0.3M33 23:35–23:50: quality 0.2observe M33 21:10–22:15scheduleNGC 7000M31M33M45M4218:0020:0022:0000:0002:0004:0006:00

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
17:20–18:30 — nothing worth pointing at — 1.17
18:30–18:35 NGC 7000 0.08 0.3
18:35–19:05 — nothing worth pointing at — 0.5
19:05–20:05 NGC 7000 1.0 0.42
20:05–21:10 M31 1.08 0.48
21:10–22:15 M33 1.08 0.41
22:15–23:20 M45 1.08 0.43
23:20–01:20 M42 2.0 0.4
01:20–07:45 — nothing worth pointing at — 6.42

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 29 unknown 19:05–23:15 (marginal) 89.8° at 16:55 48.7° 1.08
M42 Great Orion Nebula 28 unknown 19:05–01:20 (marginal) 42.9° at 21:45 32.9° 2.0
M45 Seven Sisters 31 unknown 19:05–01:20 (marginal) 72.5° at 20:00 7.0° 1.08
NGC 7000 North America Nebula 11 unknown 19:05–20:05 (marginal) 87.2° at 13:10 88.1° 1.08
V1057 Cyg 10 unknown 19:05–20:05 (marginal) 87.3° at 13:10 88.1° 0.0
M33 Triangulum Pinwheel 24 unknown 19:05–23:20 (marginal) 79.2° at 17:45 37.0° 1.08

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2040-01-23"

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"}.