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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 Sunday, 20 December 2037 · astronomical night 18:33 → 06:04 (11.51 h) · Moon 97% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:25–18:00: quality 0.1M31 18:00–18:35: quality 0.3M31 18:35–20:45: quality 0.5M31 20:45–00:45: quality 0.4M31 00:45–01:25: quality 0.3M31 01:25–01:50: quality 0.2observe M31 20:40–22:00observe M31 00:40–01:05M42M42 20:15–20:25: quality 0.1M42 20:25–00:40: quality 0.2M42 00:40–03:15: quality 0.3M42 03:15–03:50: quality 0.2M45M45 17:25–18:00: quality 0.1M45 18:00–18:35: quality 0.2M45 18:35–19:05: quality 0.4M45 19:05–03:20: quality 0.3M45 03:20–03:50: quality 0.2observe M45 02:25–03:00NGC 7000NGC 7000 17:25–18:00: quality 0.1NGC 7000 18:00–18:35: quality 0.4NGC 7000 18:35–19:30: quality 0.7NGC 7000 19:30–21:10: quality 0.6NGC 7000 21:10–21:35: quality 0.5NGC 7000 21:35–22:00: quality 0.4NGC 7000 22:00–22:20: quality 0.3observe NGC 7000 18:00–19:20V1057 CygV1057 Cyg 17:25–18:00: quality 0.1V1057 Cyg 18:00–18:35: quality 0.4V1057 Cyg 18:35–19:30: quality 0.7V1057 Cyg 19:30–21:10: quality 0.6V1057 Cyg 21:10–21:35: quality 0.5V1057 Cyg 21:35–22:00: quality 0.4V1057 Cyg 22:00–22:20: quality 0.3observe V1057 Cyg 19:20–20:40M33M33 17:25–18:00: quality 0.1M33 18:00–18:10: quality 0.3M33 18:10–18:35: quality 0.2M33 18:35–19:05: quality 0.5M33 19:05–21:45: quality 0.4M33 21:45–01:25: quality 0.3M33 01:25–02:00: quality 0.2observe M33 22:00–00:40scheduleNGC 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
16:50–18:00 — nothing worth pointing at — 1.17
18:00–19:20 NGC 7000 1.33 0.55
19:20–20:40 V1057 Cyg 1.33 0.62
20:40–22:00 M31 1.33 0.43
22:00–00:40 M33 2.67 0.32
00:40–01:05 M31 0.42 0.33
01:05–02:25 — nothing worth pointing at — 1.33
02:25–03:00 M45 0.58 0.3
03:00–07:45 — nothing worth pointing at — 4.75

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 42 unknown 18:35–01:05 (marginal) 89.5° at 19:05 54.0° 1.75
M42 Great Orion Nebula 13 unknown 02:40–02:45 (marginal) 42.9° at 00:00 28.3° 0.0
M45 Seven Sisters 25 unknown 18:35–20:45 (marginal) 72.5° at 22:10 12.5° 0.58
NGC 7000 North America Nebula 43 unknown 18:35–20:15 (good) 87.2° at 15:25 93.0° 1.33
V1057 Cyg 43 unknown 18:35–20:15 (good) 87.3° at 15:25 93.0° 1.33
M33 Triangulum Pinwheel 33 unknown 18:35–00:40 (marginal) 79.2° at 20:00 42.5° 2.67

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2037-12-20"

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"}.