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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 2043 · astronomical night 22:46 → 04:08 (5.37 h) · Moon 96% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 23:20–23:40: quality 0.3M31 23:40–00:05: quality 0.4M31 00:05–01:00: quality 0.5M31 01:00–04:10: quality 0.6M31 04:10–04:55: quality 0.3M31 04:55–05:40: quality 0.1observe M31 00:55–02:20observe M31 04:10–04:40M42M45M45 03:30–03:35: quality 0.3M45 03:35–03:55: quality 0.4M45 03:55–04:10: quality 0.5M45 04:10–04:55: quality 0.3M45 04:55–05:40: quality 0.1observe M45 03:45–04:10observe M45 04:40–04:55NGC 7000NGC 7000 21:25–22:05: quality 0.1NGC 7000 22:05–22:50: quality 0.3NGC 7000 22:50–23:50: quality 0.7NGC 7000 23:50–04:10: quality 0.6NGC 7000 04:10–04:55: quality 0.3NGC 7000 04:55–05:40: quality 0.1observe NGC 7000 22:05–23:30V1057 CygV1057 Cyg 21:25–22:05: quality 0.1V1057 Cyg 22:05–22:50: quality 0.3V1057 Cyg 22:50–23:50: quality 0.7V1057 Cyg 23:50–04:10: quality 0.6V1057 Cyg 04:10–04:55: quality 0.3V1057 Cyg 04:55–05:40: quality 0.1observe V1057 Cyg 23:30–00:55M33M33 00:55–01:15: quality 0.3M33 01:15–01:35: quality 0.4M33 01:35–02:40: quality 0.5M33 02:40–04:10: quality 0.6M33 04:10–04:55: quality 0.3M33 04:55–05:40: quality 0.1observe M33 02:20–03:45scheduleNGC 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
20:45–22:05 — nothing worth pointing at — 1.33
22:05–23:30 NGC 7000 1.42 0.48
23:30–00:55 V1057 Cyg 1.42 0.64
00:55–02:20 M31 1.42 0.57
02:20–03:45 M33 1.42 0.57
03:45–04:10 M45 0.42 0.47
04:10–04:40 M31 0.5 0.32
04:40–04:55 M45 0.25 0.32
04:55–06:10 — nothing worth pointing at — 1.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 47 unknown 02:35–04:10 (good) 89.8° at 06:00 71.5° 1.92
M42 Great Orion Nebula 0 unknown — 42.9° at 10:50 114.7° 0.0
M45 Seven Sisters 8 unknown 03:30–04:10 (marginal) 72.5° at 09:05 97.5° 0.67
NGC 7000 North America Nebula 64 unknown 22:50–01:30 (good) 87.2° at 02:15 62.2° 1.42
V1057 Cyg 64 unknown 22:50–01:30 (good) 87.3° at 02:15 62.1° 1.42
M33 Triangulum Pinwheel 31 unknown 03:40–04:10 (good) 79.2° at 06:50 73.0° 1.42

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2043-07-23"

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"}.