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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 Tuesday, 26 January 2027 · astronomical night 19:04 → 06:01 (10.95 h) · Moon 75% (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 20:10–21:35: quality 0.9M31 21:35–22:25: quality 0.8M31 22:25–22:40: quality 0.7M31 22:40–22:55: quality 0.6M31 22:55–23:10: quality 0.5M31 23:10–23:25: quality 0.4observe M31 22:00–23:10M42M42 18:00–18:35: quality 0.1M42 18:35–19:05: quality 0.4M42 19:05–19:55: quality 0.8M42 19:55–22:40: quality 0.9M42 22:40–23:10: quality 0.8M42 23:10–00:25: quality 0.7M42 00:25–00:45: quality 0.6M42 00:45–01:05: quality 0.5M42 01:05–01:20: quality 0.4M42 01:20–01:25: quality 0.3observe M42 23:10–00:30M45M45 18:00–18:35: quality 0.2M45 18:35–19:05: quality 0.5M45 19:05–22:30: quality 1.0M45 22:30–23:00: quality 0.9M45 23:00–00:20: quality 0.8M45 00:20–00:40: quality 0.7M45 00:40–00:55: quality 0.6M45 00:55–01:10: quality 0.5M45 01:10–01:25: quality 0.4observe M45 20:50–22:00observe M45 00:30–01:25NGC 7000NGC 7000 18:00–18:35: quality 0.1NGC 7000 18:35–19:00: quality 0.4NGC 7000 19:00–19:05: quality 0.3NGC 7000 19:05–19:10: quality 0.7NGC 7000 19:10–19:25: quality 0.6NGC 7000 19:25–19:45: quality 0.5NGC 7000 19:45–19:55: quality 0.4NGC 7000 06:05–06:30: quality 0.2NGC 7000 06:30–06:35: quality 0.3NGC 7000 06:35–07:10: quality 0.1observe NGC 7000 18:35–19:40V1057 CygV1057 Cyg 18:00–18:35: quality 0.1V1057 Cyg 18:35–19:00: quality 0.4V1057 Cyg 19:00–19:05: quality 0.3V1057 Cyg 19:05–19:10: quality 0.7V1057 Cyg 19:10–19:25: quality 0.6V1057 Cyg 19:25–19:45: quality 0.5V1057 Cyg 19:45–19:55: quality 0.4V1057 Cyg 06:05–06:30: quality 0.2V1057 Cyg 06:30–06:35: quality 0.3V1057 Cyg 06:35–07:10: quality 0.1M33M33 18:00–18:35: quality 0.2M33 18:35–19:05: quality 0.5M33 19:05–20:35: quality 1.0M33 20:35–21:55: quality 0.9M33 21:55–22:40: quality 0.8M33 22:40–22:55: quality 0.7M33 22:55–23:05: quality 0.6M33 23:05–23:25: quality 0.5M33 23:25–23:35: quality 0.4observe M33 19:40–20:50scheduleNGC 7000M33M45M31M42M4518:0020:0022:0000:0002:0004:0006:00

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 NGC 7000 1.08 0.49
19:40–20:50 M33 1.17 0.97
20:50–22:00 M45 1.17 1.0
22:00–23:10 M31 1.17 0.67
23:10–00:30 M42 1.33 0.71
00:30–01:25 M45 0.92 0.54
01:25–07:40 — nothing worth pointing at — 6.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 98 unknown 19:05–22:45 (good) 89.5° at 16:45 144.4° 1.17
M42 Great Orion Nebula 89 unknown 19:05–00:35 (good) 42.9° at 21:35 99.9° 1.33
M45 Seven Sisters 100 unknown 19:05–00:50 (good) 72.5° at 19:45 126.9° 2.08
NGC 7000 North America Nebula 15 unknown 19:05–19:20 (good) 87.2° at 13:00 122.2° 1.08
V1057 Cyg 15 unknown 19:05–19:20 (good) 87.3° at 13:00 122.3° 0.0
M33 Triangulum Pinwheel 100 unknown 19:05–23:00 (good) 79.1° at 17:35 149.6° 1.17

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-01-26"

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"}.