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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, 19 July 2030 · astronomical night 22:52 → 04:02 (5.18 h) · Moon 73% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 23:35–23:55: quality 0.3M31 23:55–00:20: quality 0.4M31 00:20–04:05: quality 0.5M31 04:05–04:55: quality 0.3M31 04:55–05:35: quality 0.1observe M31 00:40–01:55M42M45M45 03:45–04:05: quality 0.3M45 04:05–04:45: quality 0.2M45 04:45–04:55: quality 0.3M45 04:55–05:35: quality 0.1observe M45 03:55–04:05NGC 7000NGC 7000 21:25–22:10: quality 0.1NGC 7000 22:10–22:20: quality 0.4NGC 7000 22:20–22:55: quality 0.5NGC 7000 22:55–23:05: quality 0.9NGC 7000 23:05–23:10: quality 1.0NGC 7000 23:10–02:10: quality 0.7NGC 7000 02:10–04:05: quality 0.6NGC 7000 04:05–04:55: quality 0.3NGC 7000 04:55–05:35: quality 0.1observe NGC 7000 22:10–23:25observe NGC 7000 03:10–03:55observe NGC 7000 04:05–04:15V1057 CygV1057 Cyg 21:25–22:10: quality 0.1V1057 Cyg 22:10–22:20: quality 0.4V1057 Cyg 22:20–22:55: quality 0.5V1057 Cyg 22:55–23:05: quality 0.9V1057 Cyg 23:05–23:10: quality 1.0V1057 Cyg 23:10–02:10: quality 0.7V1057 Cyg 02:10–04:05: quality 0.6V1057 Cyg 04:05–04:55: quality 0.3V1057 Cyg 04:55–05:35: quality 0.1observe V1057 Cyg 23:25–00:40M33M33 01:10–01:35: quality 0.3M33 01:35–02:00: quality 0.4M33 02:00–04:05: quality 0.5M33 04:05–04:35: quality 0.2M33 04:35–04:55: quality 0.3M33 04:55–05:35: quality 0.1observe M33 01:55–03:10scheduleNGC 7000V1057 CygM31M33NGC 700022:0000:0002:0004:0006:00

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 0.61
23:25–00:40 V1057 Cyg 1.25 0.73
00:40–01:55 M31 1.25 0.52
01:55–03:10 M33 1.25 0.46
03:10–03:55 NGC 7000 0.75 0.61
03:55–04:05 M45 0.17 0.32
04:05–04:15 NGC 7000 0.17 0.3
04:15–06:05 — nothing worth pointing at — 1.83

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 34 unknown 23:40–04:05 (marginal) 89.6° at 06:15 38.6° 1.25
M42 Great Orion Nebula 0 unknown — 42.9° at 11:05 86.6° 0.0
M45 Seven Sisters 3 unknown 03:55–04:05 (marginal) 72.5° at 09:15 59.9° 0.17
NGC 7000 North America Nebula 95 unknown 22:55–04:05 (good) 87.2° at 02:30 54.8° 2.17
V1057 Cyg 95 unknown 22:55–04:05 (good) 87.3° at 02:30 54.8° 1.25
M33 Triangulum Pinwheel 19 unknown 01:20–04:05 (marginal) 79.1° at 07:05 35.7° 1.25

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2030-07-19"

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"}.