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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 Wednesday, 05 January 2028 · astronomical night 18:44 → 06:08 (11.41 h) · Moon 58% (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 0.3M31 18:45–23:30: quality 0.6M31 23:30–00:10: quality 0.5M31 00:10–00:35: quality 0.4M31 00:35–00:50: quality 0.3observe M31 00:15–00:45M42M42 19:15–19:30: quality 0.3M42 19:30–19:50: quality 0.4M42 19:50–20:15: quality 0.5M42 20:15–22:10: quality 0.6M42 22:10–01:40: quality 0.7M42 01:40–01:50: quality 0.8M42 01:50–02:10: quality 0.7M42 02:10–02:25: quality 0.6M42 02:25–02:40: quality 0.5M42 02:40–02:50: quality 0.4observe M42 22:45–00:15M45M45 17:40–18:15: quality 0.1M45 18:15–18:45: quality 0.3M45 18:45–22:25: quality 0.6M45 22:25–01:00: quality 0.7M45 01:00–01:40: quality 0.6M45 01:40–02:00: quality 0.8M45 02:00–02:15: quality 0.7M45 02:15–02:25: quality 0.6M45 02:25–02:40: quality 0.5M45 02:40–02:50: quality 0.4observe M45 00:45–02:50NGC 7000NGC 7000 17:40–18:15: quality 0.1NGC 7000 18:15–18:45: quality 0.3NGC 7000 18:45–20:10: quality 0.6NGC 7000 20:10–20:35: quality 0.5NGC 7000 20:35–21:00: quality 0.4NGC 7000 21:00–21:15: quality 0.3observe NGC 7000 18:15–19:45V1057 CygV1057 Cyg 17:40–18:15: quality 0.1V1057 Cyg 18:15–18:45: quality 0.3V1057 Cyg 18:45–20:10: quality 0.6V1057 Cyg 20:10–20:35: quality 0.5V1057 Cyg 20:35–21:00: quality 0.4V1057 Cyg 21:00–21:15: quality 0.3observe V1057 Cyg 19:45–21:15M33M33 17:40–18:15: quality 0.1M33 18:15–18:45: quality 0.3M33 18:45–00:05: quality 0.6M33 00:05–00:25: quality 0.5M33 00:25–00:45: quality 0.4M33 00:45–01:00: quality 0.3observe M33 21:15–22:45scheduleNGC 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
17:00–18:15 — nothing worth pointing at — 1.25
18:15–19:45 NGC 7000 1.5 0.5
19:45–21:15 V1057 Cyg 1.5 0.46
21:15–22:45 M33 1.5 0.59
22:45–00:15 M42 1.5 0.68
00:15–00:45 M31 0.5 0.36
00:45–02:50 M45 2.08 0.64
02:50–07:50 — nothing worth pointing at — 5.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 51 unknown 18:45–00:45 (marginal) 89.7° at 18:05 28.3° 0.5
M42 Great Orion Nebula 80 unknown 21:00–02:15 (good) 42.9° at 23:00 65.2° 1.5
M45 Seven Sisters 81 unknown 20:40–02:20 (good) 72.5° at 21:10 34.7° 2.08
NGC 7000 North America Nebula 23 unknown 18:45–19:05 (good) 87.2° at 14:20 63.1° 1.5
V1057 Cyg 23 unknown 18:45–19:05 (good) 87.3° at 14:20 63.1° 1.5
M33 Triangulum Pinwheel 55 unknown 18:45–00:55 (marginal) 79.1° at 18:55 16.3° 1.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-01-05"

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"}.