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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 Friday, 06 August 2027 · astronomical night 22:23 → 04:30 (6.11 h) · Moon 26% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 22:25–22:35: quality 0.4M31 22:35–22:50: quality 0.5M31 22:50–23:10: quality 0.6M31 23:10–23:25: quality 0.7M31 23:25–00:15: quality 0.8M31 00:15–01:45: quality 0.9M31 01:45–04:35: quality 1.0M31 04:35–05:15: quality 0.5M31 05:15–05:55: quality 0.2observe M31 00:45–02:15M42M45M45 02:35–02:40: quality 0.4M45 02:40–02:55: quality 0.5M45 02:55–03:10: quality 0.6M45 03:10–03:20: quality 0.7M45 03:20–04:10: quality 0.8M45 04:10–04:35: quality 0.9M45 04:35–04:50: quality 0.4M45 04:50–05:15: quality 0.5M45 05:15–05:55: quality 0.1observe M45 03:45–05:15NGC 7000NGC 7000 21:05–21:45: quality 0.1NGC 7000 21:45–22:25: quality 0.5NGC 7000 22:25–04:35: quality 1.0NGC 7000 04:35–05:15: quality 0.5NGC 7000 05:15–05:55: quality 0.1observe NGC 7000 21:45–23:15V1057 CygV1057 Cyg 21:05–21:45: quality 0.1V1057 Cyg 21:45–22:25: quality 0.5V1057 Cyg 22:25–04:35: quality 1.0V1057 Cyg 04:35–05:15: quality 0.5V1057 Cyg 05:15–05:55: quality 0.1observe V1057 Cyg 23:15–00:45M33M33 00:00–00:05: quality 0.4M33 00:05–00:20: quality 0.5M33 00:20–00:35: quality 0.6M33 00:35–00:50: quality 0.7M33 00:50–01:35: quality 0.8M33 01:35–02:55: quality 0.9M33 02:55–04:35: quality 1.0M33 04:35–05:15: quality 0.5M33 05:15–05:55: quality 0.2observe M33 02:15–03:45scheduleNGC 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
20:30–21:45 — nothing worth pointing at — 1.25
21:45–23:15 NGC 7000 1.5 0.76
23:15–00:45 V1057 Cyg 1.5 1.0
00:45–02:15 M31 1.5 0.93
02:15–03:45 M33 1.5 0.95
03:45–05:15 M45 1.5 0.67
05:15–06:25 — nothing worth pointing at — 1.17

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 23:00–04:35 (good) 89.6° at 05:05 149.4° 1.5
M42 Great Orion Nebula 0 unknown — 42.9° at 09:55 107.7° 0.0
M45 Seven Sisters 41 unknown 03:00–04:35 (good) 72.5° at 08:05 136.5° 1.5
NGC 7000 North America Nebula 100 unknown 22:25–04:35 (good) 87.3° at 01:20 120.0° 1.5
V1057 Cyg 100 unknown 22:25–04:35 (good) 87.3° at 01:20 120.0° 1.5
M33 Triangulum Pinwheel 100 unknown 00:30–04:35 (good) 79.1° at 05:55 157.9° 1.5

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-08-06"

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"}.