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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, 03 January 2042 · astronomical night 18:42 → 06:08 (11.43 h) · Moon 94% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:35–18:10: quality 0.1M31 18:10–18:30: quality 0.3M31 18:30–18:45: quality 0.2M31 18:45–19:55: quality 0.5M31 19:55–23:25: quality 0.4M31 23:25–00:30: quality 0.3M31 00:30–00:55: quality 0.2observe M31 20:20–21:25M42M42 19:20–19:25: quality 0.1M42 19:25–20:25: quality 0.2M42 20:25–20:35: quality 0.3M42 20:35–22:00: quality 0.2M42 22:00–02:20: quality 0.3M42 02:20–02:55: quality 0.2observe M42 01:30–01:55M45M45 17:35–18:10: quality 0.1M45 18:10–18:45: quality 0.2M45 18:45–02:20: quality 0.3M45 02:20–02:55: quality 0.2NGC 7000NGC 7000 17:35–18:10: quality 0.1NGC 7000 18:10–18:45: quality 0.3NGC 7000 18:45–20:00: quality 0.6NGC 7000 20:00–20:35: quality 0.5NGC 7000 20:35–21:00: quality 0.4NGC 7000 21:00–21:25: quality 0.3observe NGC 7000 18:10–19:15V1057 CygV1057 Cyg 17:35–18:10: quality 0.1V1057 Cyg 18:10–18:45: quality 0.3V1057 Cyg 18:45–20:00: quality 0.6V1057 Cyg 20:00–20:35: quality 0.5V1057 Cyg 20:35–21:00: quality 0.4V1057 Cyg 21:00–21:25: quality 0.3observe V1057 Cyg 19:15–20:20M33M33 17:35–18:10: quality 0.1M33 18:10–18:45: quality 0.2M33 18:45–21:40: quality 0.4M33 21:40–00:30: quality 0.3M33 00:30–01:05: quality 0.2observe M33 21:25–00:10scheduleNGC 7000V1057 CygM31M3318:0020:0022:0000:0002:0004:0006:00

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
17:00–18:10 — nothing worth pointing at — 1.17
18:10–19:15 NGC 7000 1.08 0.46
19:15–20:20 V1057 Cyg 1.08 0.56
20:20–21:25 M31 1.08 0.42
21:25–00:10 M33 2.75 0.32
00:10–01:30 — nothing worth pointing at — 1.33
01:30–01:55 M42 0.42 0.3
01:55–07:50 — nothing worth pointing at — 5.92

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 31 unknown 18:45–00:10 (marginal) 89.5° at 18:10 52.6° 1.08
M42 Great Orion Nebula 15 unknown 01:30–01:55 (marginal) 42.9° at 23:05 33.0° 0.42
M45 Seven Sisters 21 unknown 18:45–20:15 (marginal) 72.5° at 21:15 14.5° 0.0
NGC 7000 North America Nebula 25 unknown 18:45–19:10 (good) 87.2° at 14:30 89.8° 1.08
V1057 Cyg 25 unknown 18:45–19:10 (good) 87.3° at 14:30 89.8° 1.08
M33 Triangulum Pinwheel 25 unknown 18:45–00:10 (marginal) 79.2° at 19:05 43.1° 2.75

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2042-01-03"

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"}.