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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 Friday, 07 January 2028 · astronomical night 18:45 → 06:08 (11.38 h) · Moon 78% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:40–18:15: quality 0.1M31 18:15–18:50: quality 0.2M31 18:50–23:55: quality 0.4M31 23:55–00:30: quality 0.3M31 00:30–00:40: quality 0.2observe M31 21:00–22:20M42M42 19:05–19:20: quality 0.2M42 19:20–19:55: quality 0.3M42 19:55–22:25: quality 0.4M42 22:25–01:50: quality 0.5M42 01:50–02:20: quality 0.4M42 02:20–02:40: quality 0.3observe M42 22:20–23:40observe M42 02:25–02:35M45M45 17:40–18:15: quality 0.1M45 18:15–18:50: quality 0.2M45 18:50–23:20: quality 0.4M45 23:20–01:50: quality 0.5M45 01:50–02:15: quality 0.4M45 02:15–02:40: quality 0.3observe M45 00:20–02:25NGC 7000NGC 7000 17:40–18:15: quality 0.1NGC 7000 18:15–18:50: quality 0.3NGC 7000 18:50–19:15: quality 0.6NGC 7000 19:15–20:20: quality 0.5NGC 7000 20:20–20:45: quality 0.4NGC 7000 20:45–21:10: quality 0.3observe NGC 7000 18:15–18:20observe NGC 7000 18:50–20:05V1057 CygV1057 Cyg 17:40–18:15: quality 0.1V1057 Cyg 18:15–18:50: quality 0.3V1057 Cyg 18:50–19:15: quality 0.6V1057 Cyg 19:15–20:20: quality 0.5V1057 Cyg 20:20–20:45: quality 0.4V1057 Cyg 20:45–21:10: quality 0.3observe V1057 Cyg 20:05–21:00M33M33 17:40–18:15: quality 0.1M33 18:15–18:50: quality 0.2M33 18:50–00:05: quality 0.4M33 00:05–00:40: quality 0.3M33 00:40–00:50: quality 0.2observe M33 23:40–00:20scheduleNGC 7000V1057 CygM31M42M4518:0020:0022:0000:0002:0004:0006:00

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
18:15–18:20 NGC 7000 0.08 0.3
18:20–18:50 — nothing worth pointing at — 0.5
18:50–20:05 NGC 7000 1.25 0.54
20:05–21:00 V1057 Cyg 0.92 0.39
21:00–22:20 M31 1.33 0.41
22:20–23:40 M42 1.33 0.46
23:40–00:20 M33 0.67 0.36
00:20–02:25 M45 2.08 0.44
02:25–02:35 M42 0.17 0.31
02:35–07:50 — nothing worth pointing at — 5.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 27 unknown 18:50–00:10 (marginal) 89.6° at 18:00 35.6° 1.33
M42 Great Orion Nebula 40 unknown 19:40–02:35 (marginal) 42.9° at 22:50 45.7° 1.5
M45 Seven Sisters 40 unknown 18:50–02:25 (marginal) 72.5° at 21:00 8.8° 2.08
NGC 7000 North America Nebula 19 unknown 18:50–21:00 (marginal) 87.3° at 14:15 75.9° 1.33
V1057 Cyg 19 unknown 18:50–21:00 (marginal) 87.3° at 14:15 75.9° 0.92
M33 Triangulum Pinwheel 25 unknown 18:50–00:20 (marginal) 79.1° at 18:50 22.4° 0.67
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-01-07"

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"}.