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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, 24 December 2026 · astronomical night 18:35 → 06:05 (11.5 h) · Moon 99% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:30–18:05: quality 0.1M31 18:05–18:40: quality 0.4M31 18:40–20:40: quality 0.7M31 20:40–22:35: quality 0.6M31 22:35–00:25: quality 0.5M31 00:25–00:55: quality 0.4M31 00:55–01:25: quality 0.3M31 01:25–01:35: quality 0.2observe M31 20:35–21:50observe M31 00:20–01:10M42M42 20:00–20:20: quality 0.2M42 20:20–00:45: quality 0.3M42 00:45–03:25: quality 0.2M42 03:25–03:35: quality 0.1M45M45 17:30–18:05: quality 0.1M45 18:05–18:40: quality 0.3M45 18:40–21:10: quality 0.5M45 21:10–23:50: quality 0.4M45 23:50–02:50: quality 0.3M45 02:50–03:35: quality 0.2observe M45 23:05–00:20NGC 7000NGC 7000 17:30–18:05: quality 0.1NGC 7000 18:05–18:40: quality 0.4NGC 7000 18:40–19:20: quality 0.8NGC 7000 19:20–20:45: quality 0.7NGC 7000 20:45–21:10: quality 0.6NGC 7000 21:10–21:35: quality 0.5NGC 7000 21:35–21:55: quality 0.4NGC 7000 21:55–22:05: quality 0.3observe NGC 7000 19:20–20:35V1057 CygV1057 Cyg 17:30–18:05: quality 0.1V1057 Cyg 18:05–18:40: quality 0.4V1057 Cyg 18:40–19:20: quality 0.8V1057 Cyg 19:20–20:45: quality 0.7V1057 Cyg 20:45–21:10: quality 0.6V1057 Cyg 21:10–21:35: quality 0.5V1057 Cyg 21:35–21:55: quality 0.4V1057 Cyg 21:55–22:05: quality 0.3observe V1057 Cyg 18:05–19:20M33M33 17:30–18:05: quality 0.1M33 18:05–18:40: quality 0.4M33 18:40–19:55: quality 0.7M33 19:55–22:20: quality 0.6M33 22:20–00:00: quality 0.5M33 00:00–01:05: quality 0.4M33 01:05–01:30: quality 0.3M33 01:30–01:45: quality 0.2observe M33 21:50–23:05observe M33 01:10–01:20scheduleV1057 CygNGC 7000M31M33M45M3118:0020:0022:0000:0002:0004:0006:00

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
16:55–18:05 — nothing worth pointing at — 1.17
18:05–19:20 V1057 Cyg 1.25 0.61
19:20–20:35 NGC 7000 1.25 0.7
20:35–21:50 M31 1.25 0.63
21:50–23:05 M33 1.25 0.54
23:05–00:20 M45 1.25 0.35
00:20–01:10 M31 0.83 0.39
01:10–01:20 M33 0.17 0.31
01:20–07:50 — nothing worth pointing at — 6.5

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 72 unknown 18:40–21:50 (good) 89.5° at 18:50 78.0° 2.08
M42 Great Orion Nebula 16 unknown 20:45–22:25 (marginal) 42.9° at 23:45 38.4° 0.0
M45 Seven Sisters 48 unknown 18:40–01:20 (marginal) 72.5° at 21:55 45.7° 1.25
NGC 7000 North America Nebula 49 unknown 18:40–21:00 (good) 87.2° at 15:10 105.7° 1.25
V1057 Cyg 49 unknown 18:40–21:00 (good) 87.3° at 15:10 105.8° 1.25
M33 Triangulum Pinwheel 70 unknown 18:40–21:10 (good) 79.1° at 19:45 72.3° 1.42

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-12-24"

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"}.