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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, 21 December 2034 · astronomical night 18:34 → 06:04 (11.51 h) · Moon 83% (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 0.2M31 18:35–19:35: quality 0.5M31 19:35–01:05: quality 0.4M31 01:05–01:40: quality 0.3M31 01:40–01:45: quality 0.2observe M31 21:25–23:05M42M42 20:10–20:30: quality 0.2M42 20:30–21:05: quality 0.3M42 21:05–23:20: quality 0.4M42 23:20–03:05: quality 0.5M42 03:05–03:30: quality 0.4M42 03:30–03:45: quality 0.3observe M42 23:05–00:45observe M42 03:40–03:45M45M45 17:30–18:05: quality 0.1M45 18:05–18:35: quality 0.2M45 18:35–23:55: quality 0.4M45 23:55–03:00: quality 0.5M45 03:00–03:25: quality 0.4M45 03:25–03:45: quality 0.3observe M45 01:35–03:40NGC 7000NGC 7000 17:30–18:05: quality 0.1NGC 7000 18:05–18:35: quality 0.3NGC 7000 18:35–18:40: quality 0.7NGC 7000 18:40–20:25: quality 0.6NGC 7000 20:25–21:25: quality 0.5NGC 7000 21:25–21:50: quality 0.4NGC 7000 21:50–22:15: quality 0.3observe NGC 7000 18:05–19:45V1057 CygV1057 Cyg 17:30–18:05: quality 0.1V1057 Cyg 18:05–18:35: quality 0.3V1057 Cyg 18:35–18:40: quality 0.7V1057 Cyg 18:40–20:25: quality 0.6V1057 Cyg 20:25–21:25: quality 0.5V1057 Cyg 21:25–21:50: quality 0.4V1057 Cyg 21:50–22:15: quality 0.3observe V1057 Cyg 19:45–21:25M33M33 17:30–18:05: quality 0.1M33 18:05–18:35: quality 0.2M33 18:35–01:15: quality 0.4M33 01:15–01:50: quality 0.3M33 01:50–01:55: quality 0.2observe M33 00:45–01:35scheduleNGC 7000V1057 CygM31M42M33M4518:0020:0022:0000:0002:0004:0006:00

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 NGC 7000 1.67 0.53
19:45–21:25 V1057 Cyg 1.67 0.54
21:25–23:05 M31 1.67 0.43
23:05–00:45 M42 1.67 0.47
00:45–01:35 M33 0.83 0.36
01:35–03:40 M45 2.08 0.45
03:40–03:45 M42 0.08 0.3
03:45–07:50 — nothing worth pointing at — 4.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 38 unknown 18:35–01:25 (marginal) 89.7° at 19:05 39.6° 1.67
M42 Great Orion Nebula 43 unknown 20:45–03:45 (marginal) 42.9° at 23:55 46.3° 1.75
M45 Seven Sisters 48 unknown 18:35–03:40 (marginal) 72.5° at 22:10 19.9° 2.08
NGC 7000 North America Nebula 35 unknown 18:35–19:30 (good) 87.2° at 15:20 79.0° 1.67
V1057 Cyg 35 unknown 18:35–19:30 (good) 87.3° at 15:20 79.0° 1.67
M33 Triangulum Pinwheel 32 unknown 18:35–01:35 (marginal) 79.1° at 19:55 24.8° 0.83
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2034-12-21"

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"}.