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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, 23 January 2028 · astronomical night 19:01 → 06:03 (11.04 h) · Moon 7% (waning crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:55–18:30: quality 0.2M31 18:30–19:05: quality 0.5M31 19:05–20:20: quality 1.0M31 20:20–21:45: quality 0.9M31 21:45–22:40: quality 0.8M31 22:40–22:55: quality 0.7M31 22:55–23:10: quality 0.6M31 23:10–23:30: quality 0.5M31 23:30–23:35: quality 0.4observe M31 22:15–23:30M42M42 18:00–18:30: quality 0.1M42 18:30–18:50: quality 0.3M42 18:50–19:05: quality 0.4M42 19:05–20:10: quality 0.8M42 20:10–23:30: quality 0.9M42 23:30–00:40: quality 0.8M42 00:40–01:00: quality 0.7M42 01:00–01:15: quality 0.6M42 01:15–01:30: quality 0.5M42 01:30–01:35: quality 0.4observe M42 23:30–01:35M45M45 17:55–18:05: quality 0.1M45 18:05–18:30: quality 0.2M45 18:30–19:05: quality 0.5M45 19:05–22:40: quality 1.0M45 22:40–00:00: quality 0.9M45 00:00–00:50: quality 0.8M45 00:50–01:05: quality 0.7M45 01:05–01:15: quality 0.6M45 01:15–01:30: quality 0.5M45 01:30–01:35: quality 0.4observe M45 21:00–22:15NGC 7000NGC 7000 17:55–18:30: quality 0.1NGC 7000 18:30–19:05: quality 0.4NGC 7000 19:05–19:25: quality 0.7NGC 7000 19:25–19:40: quality 0.6NGC 7000 19:40–20:00: quality 0.5NGC 7000 20:00–20:05: quality 0.4NGC 7000 06:20–06:35: quality 0.2NGC 7000 06:35–06:40: quality 0.3NGC 7000 06:40–07:15: quality 0.1observe NGC 7000 18:30–19:45V1057 CygV1057 Cyg 17:55–18:30: quality 0.1V1057 Cyg 18:30–19:05: quality 0.4V1057 Cyg 19:05–19:25: quality 0.7V1057 Cyg 19:25–19:40: quality 0.6V1057 Cyg 19:40–19:55: quality 0.5V1057 Cyg 19:55–20:05: quality 0.4V1057 Cyg 06:20–06:35: quality 0.2V1057 Cyg 06:35–06:40: quality 0.3V1057 Cyg 06:40–07:15: quality 0.1M33M33 17:55–18:30: quality 0.2M33 18:30–19:05: quality 0.5M33 19:05–20:50: quality 1.0M33 20:50–22:10: quality 0.9M33 22:10–23:00: quality 0.8M33 23:00–23:10: quality 0.7M33 23:10–23:25: quality 0.6M33 23:25–23:40: quality 0.5M33 23:40–23:45: quality 0.4observe M33 19:45–21:00scheduleNGC 7000M33M45M31M4218:0020:0022:0000:0002:0004:0006:00

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
17:20–18:30 — nothing worth pointing at — 1.17
18:30–19:45 NGC 7000 1.25 0.53
19:45–21:00 M33 1.25 0.98
21:00–22:15 M45 1.25 1.0
22:15–23:30 M31 1.25 0.66
23:30–01:35 M42 2.08 0.72
01:35–07:45 — nothing worth pointing at — 6.17

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 19:05–23:05 (good) 89.7° at 16:55 111.4° 1.25
M42 Great Orion Nebula 89 unknown 19:05–01:05 (good) 42.9° at 21:45 147.1° 2.08
M45 Seven Sisters 100 unknown 19:05–01:10 (good) 72.5° at 20:00 146.0° 1.25
NGC 7000 North America Nebula 19 unknown 19:05–19:30 (good) 87.2° at 13:10 79.4° 1.25
V1057 Cyg 19 unknown 19:05–19:30 (good) 87.3° at 13:10 79.4° 0.0
M33 Triangulum Pinwheel 100 unknown 19:05–23:20 (good) 79.1° at 17:45 118.5° 1.25

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-01-23"

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"}.