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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 Thursday, 17 December 2043 · astronomical night 18:32 → 06:02 (11.5 h) · Moon 96% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:25–18:00: quality 0.2M31 18:00–18:35: quality 0.4M31 18:35–19:05: quality 0.8M31 19:05–21:55: quality 0.7M31 21:55–23:25: quality 0.6M31 23:25–01:05: quality 0.5M31 01:05–01:30: quality 0.4M31 01:30–02:00: quality 0.3M31 02:00–02:05: quality 0.2observe M31 21:10–22:45M42M42 20:30–20:40: quality 0.2M42 20:40–21:25: quality 0.3M42 21:25–22:25: quality 0.4M42 22:25–03:05: quality 0.3M42 03:05–04:00: quality 0.2M42 04:00–04:05: quality 0.1observe M42 00:20–00:30M45M45 17:25–18:00: quality 0.1M45 18:00–18:35: quality 0.3M45 18:35–20:30: quality 0.6M45 20:30–22:35: quality 0.5M45 22:35–01:20: quality 0.4M45 01:20–03:30: quality 0.3M45 03:30–04:05: quality 0.2observe M45 00:30–03:10NGC 7000NGC 7000 17:25–18:00: quality 0.2NGC 7000 18:00–18:35: quality 0.4NGC 7000 18:35–19:55: quality 0.8NGC 7000 19:55–21:20: quality 0.7NGC 7000 21:20–21:40: quality 0.6NGC 7000 21:40–22:05: quality 0.5NGC 7000 22:05–22:25: quality 0.4NGC 7000 22:25–22:30: quality 0.3observe NGC 7000 19:35–21:10V1057 CygV1057 Cyg 17:25–18:00: quality 0.2V1057 Cyg 18:00–18:35: quality 0.4V1057 Cyg 18:35–19:55: quality 0.8V1057 Cyg 19:55–21:20: quality 0.7V1057 Cyg 21:20–21:40: quality 0.6V1057 Cyg 21:40–22:05: quality 0.5V1057 Cyg 22:05–22:25: quality 0.4V1057 Cyg 22:25–22:30: quality 0.3observe V1057 Cyg 18:00–19:35M33M33 17:25–17:55: quality 0.1M33 17:55–18:00: quality 0.2M33 18:00–18:35: quality 0.4M33 18:35–21:10: quality 0.7M33 21:10–23:20: quality 0.6M33 23:20–01:00: quality 0.5M33 01:00–01:40: quality 0.4M33 01:40–02:05: quality 0.3M33 02:05–02:15: quality 0.2observe M33 22:45–00:20scheduleV1057 CygNGC 7000M31M33M4518:0020:0022:0000:0002:0004:0006:00

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
16:50–18:00 — nothing worth pointing at — 1.17
18:00–19:35 V1057 Cyg 1.58 0.67
19:35–21:10 NGC 7000 1.58 0.72
21:10–22:45 M31 1.58 0.64
22:45–00:20 M33 1.58 0.53
00:20–00:30 M42 0.17 0.3
00:30–03:10 M45 2.67 0.34
03:10–07:45 — nothing worth pointing at — 4.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 77 unknown 18:35–22:40 (good) 89.7° at 19:20 79.6° 1.58
M42 Great Orion Nebula 20 unknown 21:00–00:30 (marginal) 42.9° at 00:15 41.3° 0.17
M45 Seven Sisters 56 unknown 18:35–03:10 (marginal) 72.6° at 22:25 48.5° 2.67
NGC 7000 North America Nebula 63 unknown 18:35–21:35 (good) 87.2° at 15:35 105.6° 1.58
V1057 Cyg 63 unknown 18:35–21:35 (good) 87.2° at 15:35 105.7° 1.58
M33 Triangulum Pinwheel 75 unknown 18:35–22:35 (good) 79.2° at 20:10 74.5° 1.58
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2043-12-17"

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"}.