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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, 22 December 2039 · astronomical night 18:34 → 06:04 (11.51 h) · Moon 55% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:30–18:05: quality 0.1M31 18:05–18:35: quality 0.3M31 18:35–00:20: quality 0.7M31 00:20–00:40: quality 0.6M31 00:40–00:45: quality 0.8M31 00:45–01:00: quality 0.7M31 01:00–01:20: quality 0.6M31 01:20–01:35: quality 0.5M31 01:35–01:45: quality 0.4M42M42 20:10–20:15: quality 0.3M42 20:15–20:35: quality 0.4M42 20:35–20:55: quality 0.5M42 20:55–21:30: quality 0.6M42 21:30–23:50: quality 0.7M42 23:50–00:40: quality 0.8M42 00:40–01:35: quality 0.9M42 01:35–02:45: quality 0.8M42 02:45–03:05: quality 0.7M42 03:05–03:20: quality 0.6M42 03:20–03:35: quality 0.5M42 03:35–03:45: quality 0.4observe M42 23:05–00:45M45M45 17:30–18:05: quality 0.1M45 18:05–18:35: quality 0.3M45 18:35–19:05: quality 0.6M45 19:05–22:15: quality 0.7M45 22:15–00:40: quality 0.8M45 00:40–00:50: quality 1.0M45 00:50–02:10: quality 0.9M45 02:10–02:55: quality 0.8M45 02:55–03:10: quality 0.7M45 03:10–03:25: quality 0.6M45 03:25–03:35: quality 0.5M45 03:35–03:45: quality 0.4observe M45 21:25–23:05observe M45 01:55–03:45NGC 7000NGC 7000 17:30–18:05: quality 0.1NGC 7000 18:05–18:35: quality 0.4NGC 7000 18:35–20:00: quality 0.7NGC 7000 20:00–21:20: quality 0.6NGC 7000 21:20–21:40: quality 0.5NGC 7000 21:40–22:05: quality 0.4NGC 7000 22:05–22:15: quality 0.3observe NGC 7000 19:45–21:25V1057 CygV1057 Cyg 17:30–18:05: quality 0.1V1057 Cyg 18:05–18:35: quality 0.4V1057 Cyg 18:35–20:00: quality 0.7V1057 Cyg 20:00–21:20: quality 0.6V1057 Cyg 21:20–21:40: quality 0.5V1057 Cyg 21:40–22:05: quality 0.4V1057 Cyg 22:05–22:10: quality 0.3observe V1057 Cyg 18:05–19:45M33M33 17:30–18:05: quality 0.1M33 18:05–18:35: quality 0.3M33 18:35–20:05: quality 0.6M33 20:05–00:30: quality 0.7M33 00:30–00:40: quality 0.6M33 00:40–01:05: quality 0.8M33 01:05–01:20: quality 0.7M33 01:20–01:30: quality 0.6M33 01:30–01:45: quality 0.5M33 01:45–01:55: quality 0.4observe M33 00:45–01:55scheduleV1057 CygNGC 7000M45M42M33M4518:0020:0022:0000:0002:0004:0006:00

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
16:50–18:05 — nothing worth pointing at — 1.25
18:05–19:45 V1057 Cyg 1.67 0.59
19:45–21:25 NGC 7000 1.67 0.62
21:25–23:05 M45 1.67 0.75
23:05–00:45 M42 1.67 0.76
00:45–01:55 M33 1.17 0.63
01:55–03:45 M45 1.83 0.71
03:45–07:50 — nothing worth pointing at — 4.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 78 unknown 18:35–01:10 (good) 89.7° at 19:00 43.0° 0.0
M42 Great Orion Nebula 88 unknown 21:05–03:10 (good) 42.9° at 23:55 75.4° 1.67
M45 Seven Sisters 96 unknown 18:35–03:15 (good) 72.5° at 22:05 53.4° 3.5
NGC 7000 North America Nebula 43 unknown 18:35–21:05 (good) 87.2° at 15:15 66.2° 1.67
V1057 Cyg 43 unknown 18:35–21:05 (good) 87.2° at 15:20 66.1° 1.67
M33 Triangulum Pinwheel 82 unknown 18:35–01:25 (good) 79.2° at 19:55 35.4° 1.17

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2039-12-22"

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"}.