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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 Saturday, 08 October 2039 · astronomical night 20:23 → 05:53 (9.5 h) · Moon 64% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:20–19:55: quality 0.1M31 19:55–20:25: quality 0.4M31 20:25–21:35: quality 0.9M31 21:35–22:35: quality 1.0M31 22:35–01:15: quality 0.8M31 01:15–04:15: quality 0.7M31 04:15–05:55: quality 0.6M31 05:55–06:30: quality 0.3M31 06:30–07:00: quality 0.1observe M31 23:25–01:10M42M42 02:05–02:35: quality 0.3M42 02:35–03:10: quality 0.4M42 03:10–05:45: quality 0.5M42 05:45–05:55: quality 0.4M42 05:55–06:30: quality 0.2M42 06:30–07:00: quality 0.1observe M42 04:40–05:55M45M45 22:25–22:55: quality 0.4M45 22:55–23:15: quality 0.5M45 23:15–03:25: quality 0.6M45 03:25–05:55: quality 0.5M45 05:55–06:05: quality 0.3M45 06:05–06:30: quality 0.2M45 06:30–07:00: quality 0.1observe M45 02:55–04:40NGC 7000NGC 7000 19:20–19:55: quality 0.2NGC 7000 19:55–20:25: quality 0.5NGC 7000 20:25–22:35: quality 1.0NGC 7000 22:35–00:25: quality 0.9NGC 7000 00:25–01:45: quality 0.8NGC 7000 01:45–03:00: quality 0.7NGC 7000 03:00–03:20: quality 0.6NGC 7000 03:20–03:40: quality 0.5NGC 7000 03:40–04:05: quality 0.4NGC 7000 04:05–04:10: quality 0.3observe NGC 7000 21:40–23:25V1057 CygV1057 Cyg 19:20–19:55: quality 0.2V1057 Cyg 19:55–20:25: quality 0.5V1057 Cyg 20:25–22:35: quality 1.0V1057 Cyg 22:35–00:25: quality 0.9V1057 Cyg 00:25–01:45: quality 0.8V1057 Cyg 01:45–03:00: quality 0.7V1057 Cyg 03:00–03:20: quality 0.6V1057 Cyg 03:20–03:40: quality 0.5V1057 Cyg 03:40–04:05: quality 0.4observe V1057 Cyg 19:55–21:40M33M33 19:50–19:55: quality 0.1M33 19:55–20:05: quality 0.2M33 20:05–20:25: quality 0.3M33 20:25–20:40: quality 0.7M33 20:40–21:30: quality 0.8M33 21:30–22:35: quality 0.9M33 22:35–00:25: quality 0.8M33 00:25–04:00: quality 0.7M33 04:00–05:50: quality 0.6M33 05:50–05:55: quality 0.5M33 05:55–06:30: quality 0.3M33 06:30–07:00: quality 0.1observe M33 01:10–02:55scheduleV1057 CygNGC 7000M31M33M45M4220:0022:0000:0002:0004:0006:00

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
18:50–19:55 — nothing worth pointing at — 1.08
19:55–21:40 V1057 Cyg 1.75 0.86
21:40–23:25 NGC 7000 1.75 0.95
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
05:55–07:30 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 20:25–05:05 (good) 89.7° at 00:55 66.0° 1.75
M42 Great Orion Nebula 20 unknown 02:20–05:55 (marginal) 42.9° at 05:50 30.7° 1.25
M45 Seven Sisters 60 unknown 22:25–05:55 (marginal) 72.5° at 04:00 30.1° 1.75
NGC 7000 North America Nebula 100 unknown 20:25–03:10 (good) 87.2° at 21:10 99.6° 1.75
V1057 Cyg 100 unknown 20:25–03:10 (good) 87.2° at 21:10 99.6° 1.75
M33 Triangulum Pinwheel 93 unknown 20:25–04:55 (good) 79.2° at 01:45 58.1° 1.75
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2039-10-08"

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"}.