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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 Wednesday, 12 January 2028 · astronomical night 18:50 → 06:08 (11.3 h) · Moon 99% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:45–17:50: quality 0.2M31 17:50–18:20: quality 0.1M31 18:20–18:55: quality 0.4M31 18:55–20:25: quality 0.8M31 20:25–21:45: quality 0.7M31 21:45–23:15: quality 0.6M31 23:15–23:40: quality 0.5M31 23:40–00:00: quality 0.4M31 00:00–00:20: quality 0.3observe M31 20:50–22:05M42M42 18:45–18:55: quality 0.1M42 18:55–19:15: quality 0.3M42 19:15–23:00: quality 0.4M42 23:00–01:35: quality 0.3M42 01:35–02:20: quality 0.2observe M42 00:35–00:40M45M45 17:45–18:20: quality 0.1M45 18:20–18:55: quality 0.3M45 18:55–19:15: quality 0.7M45 19:15–21:25: quality 0.6M45 21:25–23:35: quality 0.5M45 23:35–01:30: quality 0.4M45 01:30–02:00: quality 0.3M45 02:00–02:20: quality 0.2observe M45 23:20–00:35observe M45 00:40–01:45NGC 7000NGC 7000 17:45–18:20: quality 0.1NGC 7000 18:20–18:55: quality 0.4NGC 7000 18:55–19:00: quality 0.8NGC 7000 19:00–19:50: quality 0.7NGC 7000 19:50–20:10: quality 0.6NGC 7000 20:10–20:30: quality 0.5NGC 7000 20:30–20:50: quality 0.4NGC 7000 07:00–07:20: quality 0.1observe NGC 7000 19:35–20:50V1057 CygV1057 Cyg 17:45–18:20: quality 0.1V1057 Cyg 18:20–18:55: quality 0.4V1057 Cyg 18:55–19:00: quality 0.8V1057 Cyg 19:00–19:50: quality 0.7V1057 Cyg 19:50–20:10: quality 0.6V1057 Cyg 20:10–20:30: quality 0.5V1057 Cyg 20:30–20:50: quality 0.4V1057 Cyg 07:00–07:20: quality 0.1observe V1057 Cyg 18:20–19:35M33M33 17:45–17:50: quality 0.2M33 17:50–18:20: quality 0.1M33 18:20–18:55: quality 0.4M33 18:55–19:50: quality 0.8M33 19:50–21:40: quality 0.7M33 21:40–23:10: quality 0.6M33 23:10–23:50: quality 0.5M33 23:50–00:10: quality 0.4M33 00:10–00:30: quality 0.3observe M33 22:05–23:20scheduleV1057 CygNGC 7000M31M33M45M4518:0020:0022:0000:0002:0004:0006:00

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
17:10–18:20 — nothing worth pointing at — 1.17
18:20–19:35 V1057 Cyg 1.25 0.57
19:35–20:50 NGC 7000 1.25 0.53
20:50–22:05 M31 1.25 0.67
22:05–23:20 M33 1.25 0.58
23:20–00:35 M45 1.25 0.43
00:35–00:40 M42 0.08 0.3
00:40–01:45 M45 1.08 0.37
01:45–07:50 — nothing worth pointing at — 6.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 75 unknown 18:55–22:25 (good) 89.6° at 17:40 94.3° 1.25
M42 Great Orion Nebula 28 unknown 19:00–00:40 (marginal) 42.9° at 22:30 47.7° 0.08
M45 Seven Sisters 65 unknown 18:55–20:20 (good) 72.5° at 20:40 63.3° 2.33
NGC 7000 North America Nebula 28 unknown 18:55–20:00 (good) 87.3° at 13:55 115.6° 1.25
V1057 Cyg 28 unknown 18:55–20:00 (good) 87.3° at 13:55 115.7° 1.25
M33 Triangulum Pinwheel 74 unknown 18:55–22:25 (good) 79.1° at 18:30 89.8° 1.25
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-01-12"

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"}.