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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, 29 December 2026 · astronomical night 18:38 → 06:07 (11.48 h) · Moon 59% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:35–18:10: quality 0.2M31 18:10–18:40: quality 0.5M31 18:40–22:00: quality 1.0M31 22:00–23:25: quality 0.9M31 23:25–00:10: quality 0.8M31 00:10–00:25: quality 0.7M31 00:25–00:45: quality 0.6M31 00:45–01:00: quality 0.5M31 01:00–01:15: quality 0.4observe M31 19:45–21:20M42M42 19:40–19:45: quality 0.4M42 19:45–20:00: quality 0.5M42 20:00–20:20: quality 0.6M42 20:20–20:35: quality 0.7M42 20:35–21:45: quality 0.8M42 21:45–23:45: quality 0.9M42 23:45–00:55: quality 0.8M42 00:55–02:15: quality 0.7M42 02:15–02:35: quality 0.6M42 02:35–02:55: quality 0.5M42 02:55–03:10: quality 0.4M42 03:10–03:15: quality 0.3observe M42 00:30–02:15M45M45 17:35–18:10: quality 0.1M45 18:10–18:20: quality 0.4M45 18:20–18:40: quality 0.5M45 18:40–19:00: quality 0.9M45 19:00–23:45: quality 1.0M45 23:45–00:55: quality 0.9M45 00:55–02:15: quality 0.8M45 02:15–02:35: quality 0.7M45 02:35–02:45: quality 0.6M45 02:45–03:00: quality 0.5M45 03:00–03:15: quality 0.4observe M45 22:55–00:30observe M45 02:15–03:15NGC 7000NGC 7000 17:35–18:10: quality 0.1NGC 7000 18:10–18:40: quality 0.5NGC 7000 18:40–19:50: quality 0.9NGC 7000 19:50–20:45: quality 0.8NGC 7000 20:45–21:00: quality 0.7NGC 7000 21:00–21:15: quality 0.6NGC 7000 21:15–21:35: quality 0.5NGC 7000 21:35–21:45: quality 0.4V1057 CygV1057 Cyg 17:35–18:10: quality 0.1V1057 Cyg 18:10–18:40: quality 0.5V1057 Cyg 18:40–19:50: quality 0.9V1057 Cyg 19:50–20:45: quality 0.8V1057 Cyg 20:45–21:00: quality 0.7V1057 Cyg 21:00–21:15: quality 0.6V1057 Cyg 21:15–21:35: quality 0.5V1057 Cyg 21:35–21:45: quality 0.4observe V1057 Cyg 18:10–19:45M33M33 17:35–18:10: quality 0.2M33 18:10–18:40: quality 0.5M33 18:40–22:25: quality 1.0M33 22:25–23:45: quality 0.9M33 23:45–00:30: quality 0.8M33 00:30–00:45: quality 0.7M33 00:45–01:00: quality 0.6M33 01:00–01:15: quality 0.5M33 01:15–01:25: quality 0.4observe M33 21:20–22:55scheduleV1057 CygM31M33M45M42M4518:0020:0022:0000:0002:0004:0006:00

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
16:55–18:10 — nothing worth pointing at — 1.25
18:10–19:45 V1057 Cyg 1.58 0.76
19:45–21:20 M31 1.58 1.0
21:20–22:55 M33 1.58 0.97
22:55–00:30 M45 1.58 0.96
00:30–02:15 M42 1.75 0.72
02:15–03:15 M45 1.0 0.57
03:15–07:50 — nothing worth pointing at — 4.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:40–00:35 (good) 89.5° at 18:35 138.7° 1.58
M42 Great Orion Nebula 89 unknown 20:10–02:25 (good) 42.9° at 23:25 92.7° 1.75
M45 Seven Sisters 100 unknown 18:40–02:40 (good) 72.5° at 21:35 118.1° 2.58
NGC 7000 North America Nebula 62 unknown 18:40–21:10 (good) 87.2° at 14:50 123.7° 0.0
V1057 Cyg 62 unknown 18:40–21:10 (good) 87.3° at 14:50 123.7° 1.58
M33 Triangulum Pinwheel 100 unknown 18:40–00:50 (good) 79.1° at 19:25 141.7° 1.58

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-12-29"

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"}.