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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, 17 July 2030 · astronomical night 22:54 → 04:00 (5.09 h) · Moon 89% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 23:45–00:10: quality 0.3M31 00:10–00:40: quality 0.4M31 00:40–03:40: quality 0.5M31 03:40–04:05: quality 0.6M31 04:05–04:50: quality 0.3M31 04:50–05:30: quality 0.1observe M31 00:40–01:55M42M45M45 03:50–04:05: quality 0.3M45 04:05–04:35: quality 0.2M45 04:35–04:50: quality 0.3M45 04:50–05:30: quality 0.1observe M45 03:55–04:05NGC 7000NGC 7000 21:30–22:10: quality 0.1NGC 7000 22:10–22:15: quality 0.4NGC 7000 22:15–22:55: quality 0.3NGC 7000 22:55–02:00: quality 0.6NGC 7000 02:00–04:05: quality 0.5NGC 7000 04:05–04:50: quality 0.3NGC 7000 04:50–05:30: quality 0.1observe NGC 7000 22:10–23:25V1057 CygV1057 Cyg 21:30–22:10: quality 0.1V1057 Cyg 22:10–22:15: quality 0.4V1057 Cyg 22:15–22:55: quality 0.3V1057 Cyg 22:55–02:00: quality 0.6V1057 Cyg 02:00–04:05: quality 0.5V1057 Cyg 04:05–04:50: quality 0.3V1057 Cyg 04:50–05:30: quality 0.1observe V1057 Cyg 23:25–00:40M33M33 01:15–01:20: quality 0.2M33 01:20–01:45: quality 0.3M33 01:45–02:10: quality 0.4M33 02:10–04:05: quality 0.5M33 04:05–04:50: quality 0.3M33 04:50–05:30: quality 0.1observe M33 01:55–03:55scheduleNGC 7000V1057 CygM31M3322:0000:0002:0004:0006:00

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
20:50–22:10 — nothing worth pointing at — 1.33
22:10–23:25 NGC 7000 1.25 0.45
23:25–00:40 V1057 Cyg 1.25 0.62
00:40–01:55 M31 1.25 0.49
01:55–03:55 M33 2.0 0.48
03:55–04:05 M45 0.17 0.32
04:05–06:05 — nothing worth pointing at — 2.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 33 unknown 23:55–04:05 (marginal) 89.6° at 06:20 58.1° 1.25
M42 Great Orion Nebula 0 unknown — 42.9° at 11:15 109.8° 0.0
M45 Seven Sisters 3 unknown 03:55–04:05 (marginal) 72.5° at 09:25 86.3° 0.17
NGC 7000 North America Nebula 56 unknown 22:55–00:35 (good) 87.2° at 02:40 52.7° 1.25
V1057 Cyg 56 unknown 22:55–00:35 (good) 87.3° at 02:40 52.6° 1.25
M33 Triangulum Pinwheel 20 unknown 01:30–04:05 (marginal) 79.1° at 07:15 60.2° 2.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2030-07-17"

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"}.