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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 Wednesday, 03 September 2042 · astronomical night 21:28 → 05:12 (7.73 h) · Moon 80% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 20:35–20:55: quality 0.1M31 20:55–21:25: quality 0.3M31 21:25–21:30: quality 0.4M31 21:30–21:35: quality 0.7M31 21:35–21:45: quality 0.8M31 21:45–22:50: quality 0.6M31 22:50–02:25: quality 0.5M31 02:25–05:15: quality 0.4M31 05:15–05:50: quality 0.2M31 05:50–06:25: quality 0.1observe M31 23:45–01:10M42M42 04:20–04:30: quality 0.2M42 04:30–05:00: quality 0.3M42 05:00–05:15: quality 0.4M42 05:15–05:50: quality 0.2M42 05:50–06:25: quality 0.1observe M42 04:45–05:15M45M45 00:45–00:55: quality 0.2M45 00:55–01:30: quality 0.3M45 01:30–05:15: quality 0.4M45 05:15–05:50: quality 0.2M45 05:50–06:25: quality 0.1observe M45 02:35–04:00NGC 7000NGC 7000 20:20–20:45: quality 0.1NGC 7000 20:45–20:55: quality 0.2NGC 7000 20:55–21:30: quality 0.5NGC 7000 21:30–21:45: quality 1.0NGC 7000 21:45–23:00: quality 0.8NGC 7000 23:00–02:05: quality 0.7NGC 7000 02:05–03:55: quality 0.6NGC 7000 03:55–05:15: quality 0.5NGC 7000 05:15–05:50: quality 0.2NGC 7000 05:50–06:00: quality 0.1observe NGC 7000 20:55–22:20observe NGC 7000 04:00–04:45V1057 CygV1057 Cyg 20:20–20:45: quality 0.1V1057 Cyg 20:45–20:55: quality 0.2V1057 Cyg 20:55–21:30: quality 0.5V1057 Cyg 21:30–21:45: quality 1.0V1057 Cyg 21:45–23:00: quality 0.8V1057 Cyg 23:00–02:05: quality 0.7V1057 Cyg 02:05–03:55: quality 0.6V1057 Cyg 03:55–05:15: quality 0.5V1057 Cyg 05:15–05:50: quality 0.2V1057 Cyg 05:50–06:00: quality 0.1observe V1057 Cyg 22:20–23:45M33M33 22:10–22:30: quality 0.3M33 22:30–22:55: quality 0.4M33 22:55–02:05: quality 0.5M33 02:05–05:15: quality 0.4M33 05:15–05:50: quality 0.2M33 05:50–06:25: quality 0.1observe M33 01:10–02:35scheduleNGC 7000V1057 CygM31M33M45NGC 700020:0022:0000:0002:0004:0006:00

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
19:50–20:55 — nothing worth pointing at — 1.08
20:55–22:20 NGC 7000 1.42 0.71
22:20–23:45 V1057 Cyg 1.42 0.75
23:45–01:10 M31 1.42 0.53
01:10–02:35 M33 1.42 0.45
02:35–04:00 M45 1.42 0.38
04:00–04:45 NGC 7000 0.75 0.53
04:45–05:15 M42 0.5 0.35
05:15–06:50 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 80 unknown 21:30–21:45 (good) 89.6° at 03:15 32.6° 1.42
M42 Great Orion Nebula 4 unknown 04:45–05:15 (marginal) 42.9° at 08:05 55.0° 0.5
M45 Seven Sisters 18 unknown 01:15–05:15 (marginal) 72.5° at 06:15 25.0° 1.42
NGC 7000 North America Nebula 100 unknown 21:30–03:00 (good) 87.2° at 23:30 70.9° 2.17
V1057 Cyg 100 unknown 21:30–03:00 (good) 87.3° at 23:30 70.9° 1.42
M33 Triangulum Pinwheel 39 unknown 22:15–05:15 (marginal) 79.2° at 04:05 18.0° 1.42
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2042-09-03"

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"}.