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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 Sunday, 09 January 2028 · astronomical night 18:47 → 06:08 (11.35 h) · Moon 93% (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 0.3M31 18:50–20:40: quality 0.5M31 20:40–23:30: quality 0.4M31 23:30–00:10: quality 0.3M31 00:10–00:30: quality 0.2observe M31 20:35–21:45M42M42 18:55–19:00: quality 0.1M42 19:00–19:55: quality 0.2M42 19:55–01:55: quality 0.3M42 01:55–02:30: quality 0.2M45M45 17:40–18:15: quality 0.1M45 18:15–18:50: quality 0.2M45 18:50–18:55: quality 0.4M45 18:55–01:55: quality 0.3M45 01:55–02:30: quality 0.2NGC 7000NGC 7000 17:40–18:15: quality 0.1NGC 7000 18:15–18:50: quality 0.3NGC 7000 18:50–19:55: quality 0.6NGC 7000 19:55–20:15: quality 0.5NGC 7000 20:15–20:40: quality 0.4NGC 7000 20:40–21:00: quality 0.3NGC 7000 07:15–07:20: quality 0.1observe NGC 7000 19:25–20:35V1057 CygV1057 Cyg 17:40–18:15: quality 0.1V1057 Cyg 18:15–18:50: quality 0.3V1057 Cyg 18:50–19:55: quality 0.6V1057 Cyg 19:55–20:15: quality 0.5V1057 Cyg 20:15–20:40: quality 0.4V1057 Cyg 20:40–21:00: quality 0.3V1057 Cyg 07:15–07:20: quality 0.1observe V1057 Cyg 18:15–19:25M33M33 17:40–18:15: quality 0.1M33 18:15–18:50: quality 0.2M33 18:50–18:55: quality 0.5M33 18:55–22:05: quality 0.4M33 22:05–00:10: quality 0.3M33 00:10–00:40: quality 0.2observe M33 21:45–23:50scheduleV1057 CygNGC 7000M31M3318:0020:0022:0000:0002:0004:0006:00

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
18:15–19:25 V1057 Cyg 1.17 0.46
19:25–20:35 NGC 7000 1.17 0.5
20:35–21:45 M31 1.17 0.43
21:45–23:50 M33 2.08 0.33
23:50–07:50 — nothing worth pointing at — 8.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 31 unknown 18:50–23:50 (marginal) 89.7° at 17:50 55.8° 1.17
M42 Great Orion Nebula 14 unknown — 42.9° at 22:40 32.6° 0.0
M45 Seven Sisters 20 unknown 18:50–20:15 (marginal) 72.5° at 20:55 18.9° 0.0
NGC 7000 North America Nebula 20 unknown 18:50–19:05 (good) 87.2° at 14:05 91.8° 1.17
V1057 Cyg 20 unknown 18:50–19:05 (good) 87.3° at 14:05 91.9° 1.17
M33 Triangulum Pinwheel 25 unknown 18:50–23:50 (marginal) 79.1° at 18:40 47.0° 2.08

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-01-09"

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"}.