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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, 13 July 2025 · astronomical night 22:59 → 03:54 (4.92 h) · Moon 90% (waning gibbous) · weather: ERA5 history

M31M31 00:00–00:10: quality 0.2M31 00:10–00:45: quality 0.3M31 00:45–01:00: quality 0.4M31 01:00–02:00: quality 0.2M31 03:00–03:55: quality 0.4M31 03:55–04:00: quality 0.2M31 04:00–04:45: quality 0.3M31 04:45–05:30: quality 0.1observe M31 04:00–04:45M42M45M45 04:05–04:45: quality 0.2M45 04:45–05:30: quality 0.1NGC 7000NGC 7000 21:30–22:15: quality 0.1NGC 7000 22:15–22:45: quality 0.4NGC 7000 22:45–22:55: quality 0.5NGC 7000 22:55–23:00: quality 0.3NGC 7000 00:00–01:00: quality 0.5NGC 7000 01:00–02:00: quality 0.2NGC 7000 03:00–03:55: quality 0.4NGC 7000 03:55–04:00: quality 0.2NGC 7000 04:00–04:45: quality 0.3NGC 7000 04:45–05:30: quality 0.1observe NGC 7000 22:15–23:00observe NGC 7000 00:00–00:30V1057 CygV1057 Cyg 21:30–22:15: quality 0.1V1057 Cyg 22:15–22:45: quality 0.4V1057 Cyg 22:45–22:55: quality 0.5V1057 Cyg 22:55–23:00: quality 0.3V1057 Cyg 00:00–01:00: quality 0.5V1057 Cyg 01:00–02:00: quality 0.2V1057 Cyg 03:00–03:55: quality 0.4V1057 Cyg 03:55–04:00: quality 0.2V1057 Cyg 04:00–04:45: quality 0.3V1057 Cyg 04:45–05:30: quality 0.1observe V1057 Cyg 00:30–01:00observe V1057 Cyg 03:00–03:30M33M33 01:30–02:00: quality 0.1M33 03:00–03:55: quality 0.4M33 03:55–04:00: quality 0.2M33 04:00–04:45: quality 0.3M33 04:45–05:30: quality 0.1observe M33 03:30–03:55scheduleNGC 7000NGC 7000V1057 CygV1057 CygM3122:0000:0002:0004:00

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
20:55–22:15 — nothing worth pointing at — 1.33
22:15–23:00 NGC 7000 0.75 0.43
23:00–00:00 — nothing worth pointing at — 1.0
00:00–00:30 NGC 7000 0.5 0.51
00:30–01:00 V1057 Cyg 0.5 0.5
01:00–03:00 — nothing worth pointing at — 2.0
03:00–03:30 V1057 Cyg 0.5 0.39
03:30–03:55 M33 0.42 0.37
03:55–04:00 — nothing worth pointing at — 0.08
04:00–04:45 M31 0.75 0.31
04:45–06:00 — nothing worth pointing at — 1.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 36 17 03:00–03:55 (marginal) 89.6° at 06:35 65.3° 0.75
M42 Great Orion Nebula 0 0 — 42.9° at 11:30 109.8° 0.0
M45 Seven Sisters 1 1 — 72.5° at 09:40 90.6° 0.0
NGC 7000 North America Nebula 65 30 00:00–01:00 (marginal) 87.2° at 02:50 59.8° 1.25
V1057 Cyg 65 30 00:00–01:00 (marginal) 87.3° at 02:50 59.8° 1.0
M33 Triangulum Pinwheel 20 9 03:00–03:55 (marginal) 79.1° at 07:25 66.2° 0.42

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2025-07-13"

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"}.