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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 Saturday, 27 December 2031 · astronomical night 18:37 → 06:06 (11.49 h) · Moon 99% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:30–18:05: quality 0.1M31 18:05–18:40: quality 0.3M31 18:40–20:25: quality 0.6M31 20:25–22:35: quality 0.5M31 22:35–00:30: quality 0.4M31 00:30–01:05: quality 0.3M31 01:05–01:25: quality 0.2observe M31 21:00–22:25M42M42 19:50–03:15: quality 0.2M42 03:15–03:25: quality 0.1M45M45 17:30–18:05: quality 0.1M45 18:05–18:40: quality 0.2M45 18:40–20:05: quality 0.4M45 20:05–22:25: quality 0.3M45 22:25–03:20: quality 0.2M45 03:20–03:25: quality 0.1observe M45 20:55–21:00NGC 7000NGC 7000 17:30–18:05: quality 0.1NGC 7000 18:05–18:40: quality 0.4NGC 7000 18:40–20:00: quality 0.7NGC 7000 20:00–20:55: quality 0.6NGC 7000 20:55–21:15: quality 0.5NGC 7000 21:15–21:40: quality 0.4NGC 7000 21:40–21:55: quality 0.3observe NGC 7000 19:30–20:55V1057 CygV1057 Cyg 17:30–18:05: quality 0.1V1057 Cyg 18:05–18:40: quality 0.4V1057 Cyg 18:40–20:00: quality 0.7V1057 Cyg 20:00–20:55: quality 0.6V1057 Cyg 20:55–21:15: quality 0.5V1057 Cyg 21:15–21:40: quality 0.4V1057 Cyg 21:40–21:55: quality 0.3observe V1057 Cyg 18:05–19:30M33M33 17:30–18:05: quality 0.1M33 18:05–18:40: quality 0.3M33 18:40–19:10: quality 0.6M33 19:10–21:45: quality 0.5M33 21:45–00:15: quality 0.4M33 00:15–01:10: quality 0.3M33 01:10–01:35: quality 0.2observe M33 22:25–00:50scheduleV1057 CygNGC 7000M31M3318:0020:0022:0000:0002:0004:0006:00

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
16:55–18:05 — nothing worth pointing at — 1.17
18:05–19:30 V1057 Cyg 1.42 0.58
19:30–20:55 NGC 7000 1.42 0.63
20:55–21:00 M45 0.08 0.3
21:00–22:25 M31 1.42 0.5
22:25–00:50 M33 2.42 0.37
00:50–07:50 — nothing worth pointing at — 7.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 53 unknown 18:40–19:10 (good) 89.6° at 18:40 66.7° 1.42
M42 Great Orion Nebula 10 unknown — 42.9° at 23:35 25.7° 0.0
M45 Seven Sisters 25 unknown 18:40–21:00 (marginal) 72.5° at 21:45 28.3° 0.08
NGC 7000 North America Nebula 41 unknown 18:40–20:45 (good) 87.2° at 15:00 102.1° 1.42
V1057 Cyg 41 unknown 18:40–20:45 (good) 87.3° at 15:00 102.2° 1.42
M33 Triangulum Pinwheel 45 unknown 18:40–00:50 (marginal) 79.1° at 19:35 57.6° 2.42

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-12-27"

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"}.