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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 Thursday, 30 December 2027 · astronomical night 18:39 → 06:07 (11.47 h) · Moon 9% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:35–18:10: quality 0.1M31 18:10–18:40: quality 0.5M31 18:40–21:55: quality 1.0M31 21:55–23:20: quality 0.9M31 23:20–00:15: quality 0.8M31 00:15–00:30: quality 0.7M31 00:30–00:45: quality 0.6M31 00:45–01:05: quality 0.5M31 01:05–01:10: quality 0.4observe M31 19:40–21:10M42M42 19:35–19:45: quality 0.4M42 19:45–20:00: quality 0.5M42 20:00–20:15: quality 0.6M42 20:15–20:30: quality 0.7M42 20:30–21:40: quality 0.8M42 21:40–01:05: quality 0.9M42 01:05–02:15: quality 0.8M42 02:15–02:30: quality 0.7M42 02:30–02:50: quality 0.6M42 02:50–03:05: quality 0.5M42 03:05–03:10: quality 0.4observe M42 00:10–03:10M45M45 17:35–18:10: quality 0.1M45 18:10–18:25: quality 0.4M45 18:25–18:40: quality 0.5M45 18:40–19:05: quality 0.9M45 19:05–00:15: quality 1.0M45 00:15–01:35: quality 0.9M45 01:35–02:25: quality 0.8M45 02:25–02:35: quality 0.7M45 02:35–02:50: quality 0.6M45 02:50–03:05: quality 0.5M45 03:05–03:10: quality 0.4observe M45 22:40–00:10NGC 7000NGC 7000 17:35–18:10: quality 0.1NGC 7000 18:10–18:35: quality 0.5NGC 7000 18:35–18:40: quality 0.4NGC 7000 18:40–19:25: quality 0.9NGC 7000 19:25–19:30: quality 0.8NGC 7000 19:30–19:45: quality 0.9NGC 7000 19:45–20:40: quality 0.8NGC 7000 20:40–20:55: quality 0.7NGC 7000 20:55–21:15: quality 0.6NGC 7000 21:15–21:30: quality 0.5NGC 7000 21:30–21:40: quality 0.4observe NGC 7000 18:10–19:40V1057 CygV1057 Cyg 17:35–18:10: quality 0.1V1057 Cyg 18:10–18:35: quality 0.5V1057 Cyg 18:35–18:40: quality 0.4V1057 Cyg 18:40–19:25: quality 0.9V1057 Cyg 19:25–19:30: quality 0.8V1057 Cyg 19:30–19:45: quality 0.9V1057 Cyg 19:45–20:40: quality 0.8V1057 Cyg 20:40–20:55: quality 0.7V1057 Cyg 20:55–21:15: quality 0.6V1057 Cyg 21:15–21:30: quality 0.5V1057 Cyg 21:30–21:40: quality 0.4M33M33 17:35–18:10: quality 0.1M33 18:10–18:40: quality 0.5M33 18:40–22:25: quality 1.0M33 22:25–23:45: quality 0.9M33 23:45–00:30: quality 0.8M33 00:30–00:45: quality 0.7M33 00:45–01:00: quality 0.6M33 01:00–01:15: quality 0.5M33 01:15–01:20: quality 0.4observe M33 21:10–22:40scheduleNGC 7000M31M33M45M4218:0020:0022:0000:0002:0004:0006:00

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
16:55–18:10 — nothing worth pointing at — 1.25
18:10–19:40 NGC 7000 1.5 0.73
19:40–21:10 M31 1.5 1.0
21:10–22:40 M33 1.5 0.98
22:40–00:10 M45 1.5 0.99
00:10–03:10 M42 3.0 0.76
03:10–07:50 — nothing worth pointing at — 4.67

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:40–00:40 (good) 89.7° at 18:30 76.8° 1.5
M42 Great Orion Nebula 89 unknown 20:05–02:40 (good) 42.9° at 23:20 124.9° 3.0
M45 Seven Sisters 100 unknown 18:40–02:45 (good) 72.5° at 21:35 106.6° 1.5
NGC 7000 North America Nebula 58 unknown 18:40–21:05 (good) 87.2° at 14:45 60.3° 1.5
V1057 Cyg 58 unknown 18:40–21:05 (good) 87.3° at 14:45 60.2° 0.0
M33 Triangulum Pinwheel 100 unknown 18:40–00:55 (good) 79.1° at 19:20 80.4° 1.5

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-12-30"

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"}.