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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 Monday, 26 December 2039 · astronomical night 18:36 → 06:06 (11.5 h) · Moon 89% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:30–18:05: quality 0.1M31 18:05–18:40: quality 0.2M31 18:40–19:05: quality 0.5M31 19:05–00:30: quality 0.4M31 00:30–01:10: quality 0.3M31 01:10–01:30: quality 0.2observe M31 21:05–22:35M42M42 19:50–20:35: quality 0.2M42 20:35–23:35: quality 0.3M42 23:35–02:50: quality 0.4M42 02:50–03:25: quality 0.3observe M42 00:05–01:35M45M45 17:30–18:05: quality 0.1M45 18:05–18:40: quality 0.2M45 18:40–19:15: quality 0.4M45 19:15–23:25: quality 0.3M45 23:25–02:50: quality 0.4M45 02:50–03:20: quality 0.3M45 03:20–03:25: quality 0.2observe M45 01:35–03:05NGC 7000NGC 7000 17:30–18:05: quality 0.1NGC 7000 18:05–18:40: quality 0.3NGC 7000 18:40–20:15: quality 0.6NGC 7000 20:15–21:05: quality 0.5NGC 7000 21:05–21:30: quality 0.4NGC 7000 21:30–21:55: quality 0.3observe NGC 7000 19:35–21:05V1057 CygV1057 Cyg 17:30–18:05: quality 0.1V1057 Cyg 18:05–18:40: quality 0.3V1057 Cyg 18:40–20:15: quality 0.6V1057 Cyg 20:15–21:05: quality 0.5V1057 Cyg 21:05–21:30: quality 0.4V1057 Cyg 21:30–21:55: quality 0.3observe V1057 Cyg 18:05–19:35M33M33 17:30–18:05: quality 0.1M33 18:05–18:40: quality 0.2M33 18:40–19:55: quality 0.4M33 19:55–01:10: quality 0.3M33 01:10–01:40: quality 0.2observe M33 22:35–00:05scheduleV1057 CygNGC 7000M31M33M42M4518:0020:0022:0000:0002:0004:0006:00

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
18:05–19:35 V1057 Cyg 1.5 0.5
19:35–21:05 NGC 7000 1.5 0.54
21:05–22:35 M31 1.5 0.4
22:35–00:05 M33 1.5 0.32
00:05–01:35 M42 1.5 0.38
01:35–03:05 M45 1.5 0.38
03:05–07:50 — nothing worth pointing at — 4.75

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 33 unknown 18:40–00:50 (marginal) 89.7° at 18:45 43.9° 1.5
M42 Great Orion Nebula 26 unknown 21:20–03:05 (marginal) 42.9° at 23:35 37.3° 1.5
M45 Seven Sisters 32 unknown 18:40–03:05 (marginal) 72.5° at 21:50 6.7° 1.5
NGC 7000 North America Nebula 31 unknown 18:40–19:20 (good) 87.2° at 15:00 84.2° 1.5
V1057 Cyg 31 unknown 18:40–19:20 (good) 87.3° at 15:00 84.2° 1.5
M33 Triangulum Pinwheel 24 unknown 18:40–00:50 (marginal) 79.2° at 19:35 30.7° 1.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2039-12-26"

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"}.