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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, 18 August 2027 · astronomical night 22:01 → 04:49 (6.8 h) · Moon 98% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 21:40–21:55: quality 0.1M31 21:55–22:05: quality 0.2M31 22:05–22:10: quality 0.3M31 22:10–22:40: quality 0.4M31 22:40–04:50: quality 0.5M31 04:50–05:30: quality 0.3M31 05:30–06:05: quality 0.1observe M31 00:45–02:25M42M42 05:25–05:30: quality 0.2M42 05:30–06:05: quality 0.1M45M45 01:45–01:50: quality 0.2M45 01:50–02:10: quality 0.3M45 02:10–02:35: quality 0.4M45 02:35–03:55: quality 0.5M45 03:55–04:50: quality 0.6M45 04:50–05:30: quality 0.3M45 05:30–06:05: quality 0.1observe M45 04:05–05:30NGC 7000NGC 7000 20:50–21:25: quality 0.1NGC 7000 21:25–22:05: quality 0.3NGC 7000 22:05–23:35: quality 0.6NGC 7000 23:35–04:50: quality 0.5NGC 7000 04:50–05:30: quality 0.2NGC 7000 05:30–06:05: quality 0.1observe NGC 7000 21:25–23:05V1057 CygV1057 Cyg 20:50–21:25: quality 0.1V1057 Cyg 21:25–22:05: quality 0.3V1057 Cyg 22:05–23:35: quality 0.6V1057 Cyg 23:35–04:50: quality 0.5V1057 Cyg 04:50–05:30: quality 0.2V1057 Cyg 05:30–06:05: quality 0.1observe V1057 Cyg 23:05–00:45M33M33 23:10–23:20: quality 0.2M33 23:20–23:50: quality 0.3M33 23:50–02:25: quality 0.4M33 02:25–04:50: quality 0.5M33 04:50–05:30: quality 0.3M33 05:30–06:05: quality 0.1observe M33 02:25–04:05scheduleNGC 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
20:15–21:25 — nothing worth pointing at — 1.17
21:25–23:05 NGC 7000 1.67 0.48
23:05–00:45 V1057 Cyg 1.67 0.54
00:45–02:25 M31 1.67 0.47
02:25–04:05 M33 1.67 0.47
04:05–05:30 M45 1.42 0.46
05:30–06:35 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 42 unknown 22:05–04:50 (marginal) 89.6° at 04:15 51.4° 1.67
M42 Great Orion Nebula 0 unknown — 42.9° at 09:10 99.6° 0.0
M45 Seven Sisters 27 unknown 04:40–04:50 (good) 72.5° at 07:20 76.1° 1.42
NGC 7000 North America Nebula 61 unknown 22:05–22:30 (good) 87.2° at 00:35 54.8° 1.67
V1057 Cyg 61 unknown 22:05–22:30 (good) 87.3° at 00:35 54.7° 1.67
M33 Triangulum Pinwheel 33 unknown 23:35–04:50 (marginal) 79.1° at 05:10 51.3° 1.67

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-08-18"

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"}.