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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, 07 January 2031 · astronomical night 18:46 → 06:08 (11.38 h) · Moon 99% (full moon) · 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 18:50–19:05: quality 0.7M31 19:05–21:20: quality 0.6M31 21:20–23:10: quality 0.5M31 23:10–00:00: quality 0.4M31 00:00–00:30: quality 0.3M31 00:30–00:40: quality 0.2observe M31 20:45–22:00M42M42 19:05–19:50: quality 0.2M42 19:50–21:10: quality 0.3M42 21:10–02:20: quality 0.2M42 02:20–02:40: quality 0.1M45M45 17:40–18:15: quality 0.1M45 18:15–18:50: quality 0.2M45 18:50–19:15: quality 0.5M45 19:15–21:15: quality 0.4M45 21:15–01:50: quality 0.3M45 01:50–02:35: quality 0.2M45 02:35–02:40: quality 0.1NGC 7000NGC 7000 17:40–18:15: quality 0.1NGC 7000 18:15–18:50: quality 0.4NGC 7000 18:50–19:50: quality 0.7NGC 7000 19:50–20:20: quality 0.6NGC 7000 20:20–20:40: quality 0.5NGC 7000 20:40–21:00: quality 0.4NGC 7000 21:00–21:10: quality 0.3observe NGC 7000 19:30–20:45V1057 CygV1057 Cyg 17:40–18:15: quality 0.1V1057 Cyg 18:15–18:50: quality 0.4V1057 Cyg 18:50–19:50: quality 0.7V1057 Cyg 19:50–20:20: quality 0.6V1057 Cyg 20:20–20:40: quality 0.5V1057 Cyg 20:40–21:00: quality 0.4V1057 Cyg 21:00–21:10: quality 0.3observe V1057 Cyg 18:15–19:30M33M33 17:40–18:15: quality 0.1M33 18:15–18:50: quality 0.3M33 18:50–20:35: quality 0.6M33 20:35–22:30: quality 0.5M33 22:30–00:05: quality 0.4M33 00:05–00:35: quality 0.3M33 00:35–00:50: quality 0.2observe M33 22:00–00:20scheduleV1057 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
18:15–19:30 V1057 Cyg 1.25 0.54
19:30–20:45 NGC 7000 1.25 0.58
20:45–22:00 M31 1.25 0.55
22:00–00:20 M33 2.33 0.41
00:20–07:50 — nothing worth pointing at — 7.5

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 53 unknown 18:50–20:30 (good) 89.5° at 17:55 75.4° 1.25
M42 Great Orion Nebula 11 unknown — 42.9° at 22:50 29.8° 0.0
M45 Seven Sisters 31 unknown 18:50–23:05 (marginal) 72.5° at 21:00 39.2° 0.0
NGC 7000 North America Nebula 29 unknown 18:50–20:10 (good) 87.2° at 14:15 107.4° 1.25
V1057 Cyg 29 unknown 18:50–20:10 (good) 87.3° at 14:15 107.5° 1.25
M33 Triangulum Pinwheel 48 unknown 18:50–19:20 (good) 79.1° at 18:50 67.6° 2.33

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2031-01-07"

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"}.