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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, 23 July 2037 · astronomical night 22:46 → 04:09 (5.39 h) · Moon 90% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 23:20–23:40: quality 0.4M31 23:40–23:55: quality 0.5M31 23:55–00:15: quality 0.6M31 00:15–01:05: quality 0.7M31 01:05–02:30: quality 0.8M31 02:30–03:30: quality 0.9M31 03:30–04:10: quality 1.0M31 04:10–05:00: quality 0.5M31 05:00–05:40: quality 0.2observe M31 00:55–02:20M42M45M45 03:25–03:35: quality 0.4M45 03:35–03:50: quality 0.5M45 03:50–04:00: quality 0.6M45 04:00–04:10: quality 0.7M45 04:10–05:00: quality 0.4M45 05:00–05:40: quality 0.1observe M45 03:45–05:00NGC 7000NGC 7000 21:20–22:05: quality 0.1NGC 7000 22:05–22:50: quality 0.3NGC 7000 22:50–01:50: quality 0.7NGC 7000 01:50–03:30: quality 0.8NGC 7000 03:30–04:10: quality 1.0NGC 7000 04:10–05:00: quality 0.5NGC 7000 05:00–05:40: quality 0.1observe NGC 7000 22:05–23:30V1057 CygV1057 Cyg 21:20–22:05: quality 0.1V1057 Cyg 22:05–22:50: quality 0.3V1057 Cyg 22:50–01:50: quality 0.7V1057 Cyg 01:50–03:30: quality 0.8V1057 Cyg 03:30–04:10: quality 1.0V1057 Cyg 04:10–05:00: quality 0.5V1057 Cyg 05:00–05:40: quality 0.1observe V1057 Cyg 23:30–00:55M33M33 00:50–01:05: quality 0.4M33 01:05–01:20: quality 0.5M33 01:20–01:35: quality 0.6M33 01:35–02:05: quality 0.7M33 02:05–03:25: quality 0.8M33 03:25–03:50: quality 0.9M33 03:50–04:10: quality 1.0M33 04:10–05:00: quality 0.5M33 05:00–05:40: quality 0.2observe M33 02:20–03:45scheduleNGC 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
20:45–22:05 — nothing worth pointing at — 1.33
22:05–23:30 NGC 7000 1.42 0.5
23:30–00:55 V1057 Cyg 1.42 0.72
00:55–02:20 M31 1.42 0.79
02:20–03:45 M33 1.42 0.83
03:45–05:00 M45 1.25 0.48
05:00–06:10 — nothing worth pointing at — 1.17

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 00:05–04:10 (good) 89.5° at 05:55 116.1° 1.42
M42 Great Orion Nebula 0 unknown — 42.9° at 10:50 154.4° 0.0
M45 Seven Sisters 14 unknown 03:55–04:10 (good) 72.5° at 09:00 155.1° 1.25
NGC 7000 North America Nebula 100 unknown 22:50–04:10 (good) 87.2° at 02:15 79.8° 1.42
V1057 Cyg 100 unknown 22:50–04:10 (good) 87.3° at 02:15 79.8° 1.42
M33 Triangulum Pinwheel 73 unknown 01:30–04:10 (good) 79.2° at 06:50 125.7° 1.42

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2037-07-23"

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"}.