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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, 06 January 2028 · astronomical night 18:44 → 06:08 (11.4 h) · Moon 68% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:40–18:15: quality 0.1M31 18:15–18:45: quality 0.2M31 18:45–23:45: quality 0.5M31 23:45–00:15: quality 0.4M31 00:15–00:45: quality 0.3observe M31 23:55–00:30M42M42 19:10–19:40: quality 0.3M42 19:40–20:05: quality 0.4M42 20:05–22:05: quality 0.5M42 22:05–01:50: quality 0.6M42 01:50–02:15: quality 0.5M42 02:15–02:35: quality 0.4M42 02:35–02:45: quality 0.3observe M42 22:30–23:55observe M42 02:40–02:45M45M45 17:40–18:15: quality 0.1M45 18:15–18:45: quality 0.2M45 18:45–22:55: quality 0.5M45 22:55–01:25: quality 0.6M45 01:25–02:10: quality 0.5M45 02:10–02:30: quality 0.4M45 02:30–02:45: quality 0.3observe M45 00:30–02:40NGC 7000NGC 7000 17:40–18:15: quality 0.1NGC 7000 18:15–18:45: quality 0.3NGC 7000 18:45–19:30: quality 0.6NGC 7000 19:30–20:25: quality 0.5NGC 7000 20:25–20:50: quality 0.4NGC 7000 20:50–21:15: quality 0.3observe NGC 7000 18:15–18:25observe NGC 7000 18:45–20:00V1057 CygV1057 Cyg 17:40–18:15: quality 0.1V1057 Cyg 18:15–18:45: quality 0.3V1057 Cyg 18:45–19:30: quality 0.6V1057 Cyg 19:30–20:25: quality 0.5V1057 Cyg 20:25–20:50: quality 0.4V1057 Cyg 20:50–21:15: quality 0.3observe V1057 Cyg 20:00–21:05M33M33 17:40–18:15: quality 0.1M33 18:15–18:45: quality 0.2M33 18:45–00:05: quality 0.5M33 00:05–00:30: quality 0.4M33 00:30–00:55: quality 0.3observe M33 21:05–22:30scheduleNGC 7000V1057 CygM33M42M4518:0020:0022:0000:0002:0004:0006:00

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
17:05–18:15 — nothing worth pointing at — 1.17
18:15–18:25 NGC 7000 0.17 0.3
18:25–18:45 — nothing worth pointing at — 0.33
18:45–20:00 NGC 7000 1.25 0.56
20:00–21:05 V1057 Cyg 1.08 0.42
21:05–22:30 M33 1.42 0.49
22:30–23:55 M42 1.42 0.58
23:55–00:30 M31 0.58 0.36
00:30–02:40 M45 2.17 0.5
02:40–02:45 M42 0.08 0.32
02:45–07:50 — nothing worth pointing at — 5.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 35 unknown 18:45–00:30 (marginal) 89.5° at 18:00 29.6° 0.58
M42 Great Orion Nebula 59 unknown 00:15–01:25 (good) 42.9° at 22:55 55.2° 1.5
M45 Seven Sisters 56 unknown 18:45–02:40 (marginal) 72.5° at 21:05 22.0° 2.17
NGC 7000 North America Nebula 20 unknown 18:45–21:05 (marginal) 87.2° at 14:20 69.0° 1.42
V1057 Cyg 20 unknown 18:45–21:05 (marginal) 87.3° at 14:20 69.0° 1.08
M33 Triangulum Pinwheel 38 unknown 18:45–00:45 (marginal) 79.1° at 18:55 14.8° 1.42
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-01-06"

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"}.