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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 Tuesday, 14 December 2027 · astronomical night 18:31 → 06:00 (11.48 h) · Moon 98% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:25–17:40: quality 0.2M31 17:40–18:00: quality 0.1M31 18:00–18:35: quality 0.4M31 18:35–20:30: quality 0.7M31 20:30–22:45: quality 0.6M31 22:45–00:35: quality 0.5M31 00:35–01:30: quality 0.4M31 01:30–02:05: quality 0.3M31 02:05–02:15: quality 0.2observe M31 20:40–22:00observe M31 00:50–01:45M42M42 20:40–21:10: quality 0.2M42 21:10–00:10: quality 0.3M42 00:10–04:05: quality 0.2M42 04:05–04:15: quality 0.1M45M45 17:25–18:00: quality 0.1M45 18:00–18:35: quality 0.3M45 18:35–20:55: quality 0.5M45 20:55–23:05: quality 0.4M45 23:05–03:25: quality 0.3M45 03:25–04:10: quality 0.2M45 04:10–04:15: quality 0.1observe M45 23:20–00:50NGC 7000NGC 7000 17:25–17:40: quality 0.2NGC 7000 17:40–18:00: quality 0.1NGC 7000 18:00–18:35: quality 0.4NGC 7000 18:35–19:50: quality 0.8NGC 7000 19:50–21:10: quality 0.7NGC 7000 21:10–21:50: quality 0.6NGC 7000 21:50–22:10: quality 0.5NGC 7000 22:10–22:35: quality 0.4NGC 7000 22:35–22:45: quality 0.3observe NGC 7000 19:20–20:40V1057 CygV1057 Cyg 17:25–17:40: quality 0.2V1057 Cyg 17:40–18:00: quality 0.1V1057 Cyg 18:00–18:35: quality 0.4V1057 Cyg 18:35–19:50: quality 0.8V1057 Cyg 19:50–21:10: quality 0.7V1057 Cyg 21:10–21:50: quality 0.6V1057 Cyg 21:50–22:10: quality 0.5V1057 Cyg 22:10–22:35: quality 0.4V1057 Cyg 22:35–22:45: quality 0.3observe V1057 Cyg 18:00–19:20M33M33 17:25–18:00: quality 0.1M33 18:00–18:35: quality 0.4M33 18:35–19:40: quality 0.7M33 19:40–22:10: quality 0.6M33 22:10–00:05: quality 0.5M33 00:05–01:40: quality 0.4M33 01:40–02:10: quality 0.3M33 02:10–02:25: quality 0.2observe M33 22:00–23:20observe M33 01:45–01:55scheduleV1057 CygNGC 7000M31M33M45M3118:0020:0022:0000:0002:0004:0006:00

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
16:50–18:00 — nothing worth pointing at — 1.17
18:00–19:20 V1057 Cyg 1.33 0.65
19:20–20:40 NGC 7000 1.33 0.74
20:40–22:00 M31 1.33 0.62
22:00–23:20 M33 1.33 0.53
23:20–00:50 M45 1.5 0.32
00:50–01:45 M31 0.92 0.39
01:45–01:55 M33 0.17 0.31
01:55–07:45 — nothing worth pointing at — 5.83

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 72 unknown 18:35–21:50 (good) 89.5° at 19:35 73.7° 2.25
M42 Great Orion Nebula 14 unknown 21:40–21:50 (marginal) 42.9° at 00:25 34.6° 0.0
M45 Seven Sisters 45 unknown 18:35–00:50 (marginal) 72.5° at 22:35 39.8° 1.5
NGC 7000 North America Nebula 64 unknown 18:35–21:40 (good) 87.2° at 15:50 103.8° 1.33
V1057 Cyg 65 unknown 18:35–21:40 (good) 87.3° at 15:50 103.9° 1.33
M33 Triangulum Pinwheel 70 unknown 18:35–20:50 (good) 79.1° at 20:25 67.0° 1.5

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-12-14"

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"}.