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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 Sunday, 15 August 2027 · astronomical night 22:06 → 04:44 (6.63 h) · Moon 98% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 21:50–21:55: quality 0.1M31 21:55–22:10: quality 0.2M31 22:10–22:30: quality 0.4M31 22:30–22:55: quality 0.5M31 22:55–01:05: quality 0.6M31 01:05–04:15: quality 0.7M31 04:15–04:45: quality 0.8M31 04:45–05:25: quality 0.4M31 05:25–06:05: quality 0.2observe M31 00:40–02:15M42M42 05:35–06:05: quality 0.1M45M45 02:00–02:15: quality 0.4M45 02:15–02:30: quality 0.5M45 02:30–02:50: quality 0.6M45 02:50–03:45: quality 0.7M45 03:45–04:45: quality 0.8M45 04:45–05:25: quality 0.4M45 05:25–05:35: quality 0.1M45 05:35–06:05: quality 0.2observe M45 03:50–05:25NGC 7000NGC 7000 20:55–21:30: quality 0.1NGC 7000 21:30–22:10: quality 0.3NGC 7000 22:10–04:45: quality 0.6NGC 7000 04:45–05:25: quality 0.3NGC 7000 05:25–06:05: quality 0.1observe NGC 7000 21:30–23:05V1057 CygV1057 Cyg 20:55–21:30: quality 0.1V1057 Cyg 21:30–22:10: quality 0.3V1057 Cyg 22:10–04:45: quality 0.6V1057 Cyg 04:45–05:25: quality 0.3V1057 Cyg 05:25–06:05: quality 0.1observe V1057 Cyg 23:05–00:40M33M33 23:25–23:35: quality 0.3M33 23:35–23:55: quality 0.4M33 23:55–00:15: quality 0.5M33 00:15–01:50: quality 0.6M33 01:50–03:40: quality 0.7M33 03:40–04:45: quality 0.8M33 04:45–05:25: quality 0.4M33 05:25–06:05: quality 0.2observe 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 0.49
23:05–00:40 V1057 Cyg 1.58 0.59
00:40–02:15 M31 1.58 0.67
02:15–03:50 M33 1.58 0.72
03:50–05:25 M45 1.58 0.64
05:25–06:35 — nothing worth pointing at — 1.17

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 76 unknown 00:00–04:45 (good) 89.6° at 04:30 81.8° 1.58
M42 Great Orion Nebula 0 unknown — 42.9° at 09:20 128.2° 0.0
M45 Seven Sisters 46 unknown 02:40–04:45 (good) 72.5° at 07:30 111.8° 1.58
NGC 7000 North America Nebula 64 unknown 01:50–04:45 (good) 87.3° at 00:45 63.1° 1.58
V1057 Cyg 64 unknown 01:50–04:45 (good) 87.3° at 00:45 63.0° 1.58
M33 Triangulum Pinwheel 74 unknown 01:00–04:45 (good) 79.1° at 05:20 85.7° 1.58

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-08-15"

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"}.