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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 Thursday, 17 August 2028 · astronomical night 22:01 → 04:48 (6.79 h) · Moon 9% (waning crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 21:40–22:00: quality 0.2M31 22:00–22:05: quality 0.3M31 22:05–22:20: quality 0.6M31 22:20–22:40: quality 0.7M31 22:40–23:30: quality 0.8M31 23:30–00:55: quality 0.9M31 00:55–04:50: quality 1.0M31 04:50–05:30: quality 0.5M31 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 01:50–01:55: quality 0.4M45 01:55–02:10: quality 0.5M45 02:10–02:20: quality 0.6M45 02:20–02:35: quality 0.7M45 02:35–03:20: quality 0.8M45 03:20–04:50: quality 0.9M45 04:50–05:30: quality 0.5M45 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 0.5NGC 7000 22:05–03:55: quality 1.0NGC 7000 03:55–04:50: quality 0.9NGC 7000 04:50–05:30: quality 0.4NGC 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 0.5V1057 Cyg 22:05–03:55: quality 1.0V1057 Cyg 03:55–04:50: quality 0.9V1057 Cyg 04:50–05:30: quality 0.4V1057 Cyg 05:30–06:05: quality 0.1observe V1057 Cyg 23:05–00:45M33M33 23:15–23:20: quality 0.4M33 23:20–23:35: quality 0.5M33 23:35–23:50: quality 0.6M33 23:50–00:05: quality 0.7M33 00:05–00:50: quality 0.8M33 00:50–02:10: quality 0.9M33 02:10–04:50: quality 1.0M33 04:50–05:30: quality 0.5M33 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 0.8
23:05–00:45 V1057 Cyg 1.67 1.0
00:45–02:25 M31 1.67 0.98
02:25–04:05 M33 1.67 0.99
04:05–05:30 M45 1.42 0.7
05:30–06:35 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 22:15–04:50 (good) 89.5° at 04:20 83.9° 1.67
M42 Great Orion Nebula 0 unknown — 42.9° at 09:10 39.2° 0.0
M45 Seven Sisters 64 unknown 02:15–04:50 (good) 72.5° at 07:20 51.1° 1.42
NGC 7000 North America Nebula 100 unknown 22:05–04:50 (good) 87.2° at 00:35 110.6° 1.67
V1057 Cyg 100 unknown 22:05–04:50 (good) 87.3° at 00:35 110.6° 1.67
M33 Triangulum Pinwheel 100 unknown 23:40–04:50 (good) 79.1° at 05:10 78.1° 1.67

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-08-17"

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"}.