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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, 06 October 2031 · astronomical night 20:27 → 05:51 (9.41 h) · Moon 64% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:25–19:55: quality 0.1M31 19:55–20:30: quality 0.4M31 20:30–21:45: quality 0.9M31 21:45–22:50: quality 1.0M31 22:50–01:20: quality 0.8M31 01:20–04:25: quality 0.7M31 04:25–05:55: quality 0.6M31 05:55–06:25: quality 0.3M31 06:25–07:00: quality 0.1observe M31 23:25–01:10M42M42 02:10–02:15: quality 0.2M42 02:15–02:45: quality 0.3M42 02:45–05:55: quality 0.4M42 05:55–06:25: quality 0.2M42 06:25–07:00: quality 0.1observe M42 04:40–05:55M45M45 22:35–22:40: quality 0.4M45 22:40–22:50: quality 0.5M45 22:50–23:05: quality 0.4M45 23:05–23:25: quality 0.5M45 23:25–03:25: quality 0.6M45 03:25–05:55: quality 0.5M45 05:55–06:15: quality 0.3M45 06:15–06:25: quality 0.2M45 06:25–07:00: quality 0.1observe M45 02:55–04:40NGC 7000NGC 7000 19:25–19:55: quality 0.2NGC 7000 19:55–20:30: quality 0.5NGC 7000 20:30–22:50: quality 1.0NGC 7000 22:50–00:35: quality 0.9NGC 7000 00:35–01:55: quality 0.8NGC 7000 01:55–03:10: quality 0.7NGC 7000 03:10–03:30: quality 0.6NGC 7000 03:30–03:50: quality 0.5NGC 7000 03:50–04:10: quality 0.4NGC 7000 04:10–04:15: quality 0.3observe NGC 7000 19:55–21:40V1057 CygV1057 Cyg 19:25–19:55: quality 0.2V1057 Cyg 19:55–20:30: quality 0.5V1057 Cyg 20:30–22:50: quality 1.0V1057 Cyg 22:50–00:35: quality 0.9V1057 Cyg 00:35–01:55: quality 0.8V1057 Cyg 01:55–03:10: quality 0.7V1057 Cyg 03:10–03:30: quality 0.6V1057 Cyg 03:30–03:50: quality 0.5V1057 Cyg 03:50–04:10: quality 0.4V1057 Cyg 04:10–04:15: quality 0.3observe V1057 Cyg 21:40–23:25M33M33 20:00–20:15: quality 0.2M33 20:15–20:30: quality 0.3M33 20:30–20:35: quality 0.6M33 20:35–20:50: quality 0.7M33 20:50–21:35: quality 0.8M33 21:35–22:50: quality 0.9M33 22:50–00:25: quality 0.8M33 00:25–03:50: quality 0.7M33 03:50–05:50: quality 0.6M33 05:50–05:55: quality 0.5M33 05:55–06:25: quality 0.3M33 06:25–07:00: quality 0.1observe M33 01:10–02:55scheduleNGC 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
18:55–19:55 — nothing worth pointing at — 1.0
19:55–21:40 NGC 7000 1.75 0.83
21:40–23:25 V1057 Cyg 1.75 0.97
23:25–01:10 M31 1.75 0.78
01:10–02:55 M33 1.75 0.7
02:55–04:40 M45 1.75 0.54
04:40–05:55 M42 1.25 0.45
05:55–07:25 — nothing worth pointing at — 1.5

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 20:30–05:15 (good) 89.7° at 01:05 66.4° 1.75
M42 Great Orion Nebula 19 unknown 02:30–05:55 (marginal) 42.9° at 05:55 25.8° 1.25
M45 Seven Sisters 59 unknown 22:35–05:55 (marginal) 72.5° at 04:05 27.9° 1.75
NGC 7000 North America Nebula 100 unknown 20:30–03:20 (good) 87.2° at 21:20 101.9° 1.75
V1057 Cyg 100 unknown 20:30–03:20 (good) 87.3° at 21:20 101.9° 1.75
M33 Triangulum Pinwheel 94 unknown 20:30–04:55 (good) 79.1° at 01:55 57.1° 1.75
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-10-06"

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"}.