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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 Friday, 20 October 2028 · astronomical night 20:04 → 06:07 (10.06 h) · Moon 11% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:00–19:35: quality 0.1M31 19:35–20:05: quality 0.4M31 20:05–20:45: quality 0.9M31 20:45–03:30: quality 1.0M31 03:30–05:00: quality 0.9M31 05:00–05:50: quality 0.8M31 05:50–06:05: quality 0.7M31 06:05–06:10: quality 0.6M31 06:10–06:30: quality 0.3M31 06:30–06:40: quality 0.2M31 06:40–06:50: quality 0.1observe M31 23:25–01:20M42M42 01:10–01:20: quality 0.4M42 01:20–01:35: quality 0.5M42 01:35–01:50: quality 0.6M42 01:50–02:10: quality 0.7M42 02:10–03:20: quality 0.8M42 03:20–06:10: quality 0.9M42 06:10–06:40: quality 0.4M42 06:40–07:15: quality 0.1observe M42 05:10–06:40M45M45 21:35–21:45: quality 0.4M45 21:45–21:55: quality 0.5M45 21:55–22:10: quality 0.6M45 22:10–22:25: quality 0.7M45 22:25–23:10: quality 0.8M45 23:10–00:30: quality 0.9M45 00:30–05:50: quality 1.0M45 05:50–06:10: quality 0.9M45 06:10–06:35: quality 0.5M45 06:35–06:40: quality 0.4M45 06:40–07:15: quality 0.1observe M45 03:15–05:10NGC 7000NGC 7000 19:00–19:35: quality 0.1NGC 7000 19:35–20:05: quality 0.5NGC 7000 20:05–23:50: quality 1.0NGC 7000 23:50–01:20: quality 0.9NGC 7000 01:20–02:15: quality 0.8NGC 7000 02:15–02:35: quality 0.7NGC 7000 02:35–02:50: quality 0.6NGC 7000 02:50–03:10: quality 0.5NGC 7000 03:10–03:15: quality 0.4observe NGC 7000 19:35–21:30V1057 CygV1057 Cyg 19:00–19:35: quality 0.1V1057 Cyg 19:35–20:05: quality 0.5V1057 Cyg 20:05–23:50: quality 1.0V1057 Cyg 23:50–01:20: quality 0.9V1057 Cyg 01:20–02:15: quality 0.8V1057 Cyg 02:15–02:35: quality 0.7V1057 Cyg 02:35–02:50: quality 0.6V1057 Cyg 02:50–03:10: quality 0.5V1057 Cyg 03:10–03:15: quality 0.4observe V1057 Cyg 21:30–23:25M33M33 19:00–19:35: quality 0.1M33 19:35–19:45: quality 0.3M33 19:45–20:05: quality 0.4M33 20:05–20:40: quality 0.8M33 20:40–22:00: quality 0.9M33 22:00–04:00: quality 1.0M33 04:00–05:20: quality 0.9M33 05:20–06:10: quality 0.8M33 06:10–06:15: quality 0.4M33 06:15–06:40: quality 0.3M33 06:40–07:00: quality 0.1observe M33 01:20–03:15scheduleNGC 7000V1057 CygM31M33M45M4220:0022:0000:0002:0004:0006:00

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
18:30–19:35 — nothing worth pointing at — 1.08
19:35–21:30 NGC 7000 1.92 0.87
21:30–23:25 V1057 Cyg 1.92 1.0
23:25–01:20 M31 1.92 1.0
01:20–03:15 M33 1.92 1.0
03:15–05:10 M45 1.92 1.0
05:10–06:40 M42 1.5 0.73
06:40–07:45 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 20:05–06:10 (good) 89.7° at 00:05 133.3° 1.92
M42 Great Orion Nebula 89 unknown 01:45–06:10 (good) 42.9° at 05:00 144.2° 1.5
M45 Seven Sisters 100 unknown 22:05–06:10 (good) 72.5° at 03:10 173.5° 1.92
NGC 7000 North America Nebula 100 unknown 20:05–02:40 (good) 87.2° at 20:20 94.5° 1.92
V1057 Cyg 100 unknown 20:05–02:40 (good) 87.3° at 20:20 94.5° 1.92
M33 Triangulum Pinwheel 100 unknown 20:05–06:10 (good) 79.1° at 00:55 144.0° 1.92
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-10-20"

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"}.