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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 Monday, 25 January 2027 · astronomical night 19:03 → 06:02 (10.98 h) · Moon 84% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:00–18:35: quality 0.2M31 18:35–19:05: quality 0.5M31 19:05–20:10: quality 1.0M31 20:10–21:25: quality 0.9M31 21:25–22:10: quality 0.8M31 22:10–22:40: quality 0.7M31 22:40–22:55: quality 0.6M31 22:55–23:15: quality 0.5M31 23:15–23:30: quality 0.4observe M31 22:00–23:10M42M42 18:00–18:35: quality 0.1M42 18:35–18:40: quality 0.3M42 18:40–19:05: quality 0.4M42 19:05–20:00: quality 0.8M42 20:00–21:25: quality 0.9M42 21:25–23:40: quality 0.7M42 23:40–00:35: quality 0.6M42 00:35–00:55: quality 0.5M42 00:55–01:15: quality 0.4M42 01:15–01:30: quality 0.3observe M42 23:10–00:30M45M45 18:00–18:35: quality 0.2M45 18:35–19:05: quality 0.5M45 19:05–21:25: quality 1.0M45 21:25–22:30: quality 0.9M45 22:30–23:50: quality 0.8M45 23:50–00:40: quality 0.7M45 00:40–00:55: quality 0.6M45 00:55–01:10: quality 0.5M45 01:10–01:25: quality 0.4M45 01:25–01:30: quality 0.3observe M45 20:50–22:00observe M45 00:30–01:30NGC 7000NGC 7000 18:00–18:35: quality 0.1NGC 7000 18:35–19:05: quality 0.4NGC 7000 19:05–19:15: quality 0.7NGC 7000 19:15–19:30: quality 0.6NGC 7000 19:30–19:50: quality 0.5NGC 7000 19:50–20:00: quality 0.4NGC 7000 06:10–06:35: quality 0.2NGC 7000 06:35–06:40: quality 0.3NGC 7000 06:40–07:10: quality 0.1V1057 CygV1057 Cyg 18:00–18:35: quality 0.1V1057 Cyg 18:35–19:05: quality 0.4V1057 Cyg 19:05–19:15: quality 0.7V1057 Cyg 19:15–19:30: quality 0.6V1057 Cyg 19:30–19:50: quality 0.5V1057 Cyg 19:50–19:55: quality 0.4V1057 Cyg 06:10–06:35: quality 0.2V1057 Cyg 06:35–06:40: quality 0.3V1057 Cyg 06:40–07:10: quality 0.1observe V1057 Cyg 18:35–19:40M33M33 18:00–18:35: quality 0.2M33 18:35–19:05: quality 0.5M33 19:05–20:40: quality 1.0M33 20:40–21:25: quality 0.9M33 21:25–22:30: quality 0.8M33 22:30–22:55: quality 0.7M33 22:55–23:10: quality 0.6M33 23:10–23:25: quality 0.5M33 23:25–23:40: quality 0.4observe M33 19:40–20:50scheduleV1057 CygM33M45M31M42M4518:0020:0022:0000:0002:0004:0006:00

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
17:25–18:35 — nothing worth pointing at — 1.17
18:35–19:40 V1057 Cyg 1.08 0.5
19:40–20:50 M33 1.17 0.98
20:50–22:00 M45 1.17 0.95
22:00–23:10 M31 1.17 0.65
23:10–00:30 M42 1.33 0.64
00:30–01:30 M45 1.0 0.52
01:30–07:40 — nothing worth pointing at — 6.17

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 97 unknown 19:05–22:45 (good) 89.6° at 16:45 135.1° 1.17
M42 Great Orion Nebula 89 unknown 19:05–00:25 (good) 42.9° at 21:40 88.4° 1.33
M45 Seven Sisters 100 unknown 19:05–00:50 (good) 72.5° at 19:50 113.0° 2.17
NGC 7000 North America Nebula 16 unknown 19:05–19:25 (good) 87.2° at 13:05 124.3° 0.0
V1057 Cyg 15 unknown 19:05–19:20 (good) 87.3° at 13:05 124.4° 1.08
M33 Triangulum Pinwheel 100 unknown 19:05–23:00 (good) 79.1° at 17:40 137.1° 1.17

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-01-25"

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"}.