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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 Tuesday, 13 August 2041 · astronomical night 22:09 → 04:42 (6.55 h) · Moon 95% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 22:00–22:05: quality 0.1M31 22:05–22:10: quality 0.2M31 22:10–22:20: quality 0.3M31 22:20–22:45: quality 0.4M31 22:45–04:45: quality 0.5M31 04:45–05:25: quality 0.3M31 05:25–06:00: quality 0.1observe M31 00:40–02:15M42M42 05:50–06:00: quality 0.1M45M45 02:05–02:30: quality 0.3M45 02:30–02:50: quality 0.4M45 02:50–04:15: quality 0.5M45 04:15–04:45: quality 0.6M45 04:45–05:25: quality 0.3M45 05:25–06:00: quality 0.1observe M45 03:50–04:45observe M45 05:05–05:25NGC 7000NGC 7000 20:55–21:30: quality 0.1NGC 7000 21:30–21:45: quality 0.5NGC 7000 21:45–22:10: quality 0.4NGC 7000 22:10–23:25: quality 0.7NGC 7000 23:25–03:45: quality 0.6NGC 7000 03:45–04:45: quality 0.5NGC 7000 04:45–05:25: quality 0.3NGC 7000 05:25–06:00: quality 0.1observe NGC 7000 21:30–23:05V1057 CygV1057 Cyg 20:55–21:30: quality 0.1V1057 Cyg 21:30–21:45: quality 0.5V1057 Cyg 21:45–22:10: quality 0.4V1057 Cyg 22:10–23:25: quality 0.7V1057 Cyg 23:25–03:45: quality 0.6V1057 Cyg 03:45–04:45: quality 0.5V1057 Cyg 04:45–05:25: quality 0.3V1057 Cyg 05:25–06:00: quality 0.1observe V1057 Cyg 23:05–00:40M33M33 23:30–23:35: quality 0.2M33 23:35–00:00: quality 0.3M33 00:00–01:10: quality 0.4M33 01:10–04:45: quality 0.5M33 04:45–05:25: quality 0.3M33 05:25–06:00: quality 0.1observe M33 02:15–03:50scheduleNGC 7000V1057 CygM31M33M4522:0000:0002:0004:0006:00

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
20:20–21:30 — nothing worth pointing at — 1.17
21:30–23:05 NGC 7000 1.58 0.57
23:05–00:40 V1057 Cyg 1.58 0.63
00:40–02:15 M31 1.58 0.51
02:15–03:50 M33 1.58 0.48
03:50–04:45 M45 0.92 0.55
04:45–05:05 — nothing worth pointing at — 0.33
05:05–05:25 M45 0.33 0.31
05:25–06:30 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 46 unknown 22:10–04:45 (marginal) 89.8° at 04:35 53.1° 1.58
M42 Great Orion Nebula 0 unknown — 42.9° at 09:25 92.6° 0.0
M45 Seven Sisters 22 unknown 02:15–04:45 (marginal) 72.5° at 07:40 72.3° 1.25
NGC 7000 North America Nebula 71 unknown 22:10–00:40 (good) 87.2° at 00:50 61.8° 1.58
V1057 Cyg 71 unknown 22:10–00:40 (good) 87.3° at 00:50 61.8° 1.58
M33 Triangulum Pinwheel 33 unknown 23:45–04:45 (marginal) 79.2° at 05:25 50.3° 1.58

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2041-08-13"

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"}.