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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, 02 January 2027 · astronomical night 18:41 → 06:08 (11.44 h) · Moon 20% (waning crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:35–18:10: quality 0.2M31 18:10–18:45: quality 0.5M31 18:45–21:40: quality 1.0M31 21:40–23:10: quality 0.9M31 23:10–00:00: quality 0.8M31 00:00–00:20: quality 0.7M31 00:20–00:35: quality 0.6M31 00:35–00:50: quality 0.5M31 00:50–01:00: quality 0.4observe M31 19:40–21:10M42M42 19:25–19:30: quality 0.4M42 19:30–19:45: quality 0.5M42 19:45–20:05: quality 0.6M42 20:05–20:20: quality 0.7M42 20:20–21:30: quality 0.8M42 21:30–00:55: quality 0.9M42 00:55–02:05: quality 0.8M42 02:05–02:20: quality 0.7M42 02:20–02:35: quality 0.6M42 02:35–02:50: quality 0.5M42 02:50–03:00: quality 0.4observe M42 00:10–03:00M45M45 17:35–18:10: quality 0.1M45 18:10–18:45: quality 0.5M45 18:45–00:05: quality 1.0M45 00:05–01:25: quality 0.9M45 01:25–02:10: quality 0.8M45 02:10–02:25: quality 0.7M45 02:25–02:40: quality 0.6M45 02:40–02:50: quality 0.5M45 02:50–03:00: quality 0.4observe M45 22:40–00:10NGC 7000NGC 7000 17:35–18:10: quality 0.1NGC 7000 18:10–18:45: quality 0.5NGC 7000 18:45–19:35: quality 0.9NGC 7000 19:35–20:30: quality 0.8NGC 7000 20:30–20:45: quality 0.7NGC 7000 20:45–21:00: quality 0.6NGC 7000 21:00–21:20: quality 0.5NGC 7000 21:20–21:30: quality 0.4observe NGC 7000 18:10–19:40V1057 CygV1057 Cyg 17:35–18:10: quality 0.1V1057 Cyg 18:10–18:45: quality 0.5V1057 Cyg 18:45–19:30: quality 0.9V1057 Cyg 19:30–20:30: quality 0.8V1057 Cyg 20:30–20:45: quality 0.7V1057 Cyg 20:45–21:00: quality 0.6V1057 Cyg 21:00–21:20: quality 0.5V1057 Cyg 21:20–21:30: quality 0.4M33M33 17:35–18:10: quality 0.2M33 18:10–18:45: quality 0.5M33 18:45–22:10: quality 1.0M33 22:10–23:30: quality 0.9M33 23:30–00:20: quality 0.8M33 00:20–00:35: quality 0.7M33 00:35–00:45: quality 0.6M33 00:45–01:00: quality 0.5M33 01:00–01:10: 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
17:00–18:10 — nothing worth pointing at — 1.17
18:10–19:40 NGC 7000 1.5 0.71
19:40–21:10 M31 1.5 1.0
21:10–22:40 M33 1.5 0.97
22:40–00:10 M45 1.5 0.98
00:10–03:00 M42 2.83 0.75
03:00–07:50 — nothing worth pointing at — 4.83

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:45–00:25 (good) 89.5° at 18:15 145.8° 1.5
M42 Great Orion Nebula 89 unknown 19:55–02:30 (good) 42.9° at 23:10 132.7° 2.83
M45 Seven Sisters 100 unknown 18:45–02:30 (good) 72.5° at 21:20 168.8° 1.5
NGC 7000 North America Nebula 54 unknown 18:45–20:55 (good) 87.2° at 14:35 105.4° 1.5
V1057 Cyg 54 unknown 18:45–20:55 (good) 87.3° at 14:35 105.4° 0.0
M33 Triangulum Pinwheel 100 unknown 18:45–00:40 (good) 79.1° at 19:10 159.4° 1.5

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-01-02"

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"}.