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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, 22 December 2026 · astronomical night 18:34 → 06:05 (11.51 h) · Moon 98% (full moon) · 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 18:35–19:50: quality 0.5M31 19:50–22:55: quality 0.4M31 22:55–01:05: quality 0.3M31 01:05–01:40: quality 0.2observe M31 20:45–22:05observe M31 23:05–00:45M42M42 20:05–20:15: quality 0.1M42 20:15–01:00: quality 0.2M42 01:00–03:00: quality 0.3M42 03:00–03:40: quality 0.2M45M45 17:30–18:05: quality 0.1M45 18:05–18:35: quality 0.2M45 18:35–21:35: quality 0.3M45 21:35–01:40: quality 0.2M45 01:40–02:55: quality 0.3M45 02:55–03:40: quality 0.2NGC 7000NGC 7000 17:30–18:05: quality 0.1NGC 7000 18:05–18:20: quality 0.4NGC 7000 18:20–18:35: quality 0.3NGC 7000 18:35–19:00: quality 0.7NGC 7000 19:00–20:30: quality 0.6NGC 7000 20:30–21:20: quality 0.5NGC 7000 21:20–21:45: quality 0.4NGC 7000 21:45–22:10: quality 0.3observe NGC 7000 19:25–20:45V1057 CygV1057 Cyg 17:30–18:05: quality 0.1V1057 Cyg 18:05–18:20: quality 0.4V1057 Cyg 18:20–18:35: quality 0.3V1057 Cyg 18:35–19:00: quality 0.7V1057 Cyg 19:00–20:30: quality 0.6V1057 Cyg 20:30–21:20: quality 0.5V1057 Cyg 21:20–21:45: quality 0.4V1057 Cyg 21:45–22:10: quality 0.3observe V1057 Cyg 18:05–19:25M33M33 17:30–18:05: quality 0.1M33 18:05–18:35: quality 0.2M33 18:35–18:40: quality 0.5M33 18:40–21:05: quality 0.4M33 21:05–01:05: quality 0.3M33 01:05–01:50: quality 0.2observe M33 22:05–23:05scheduleV1057 CygNGC 7000M31M33M3118:0020:0022:0000:0002:0004:0006:00

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
18:05–19:25 V1057 Cyg 1.33 0.54
19:25–20:45 NGC 7000 1.33 0.58
20:45–22:05 M31 1.33 0.4
22:05–23:05 M33 1.0 0.31
23:05–00:45 M31 1.67 0.33
00:45–07:50 — nothing worth pointing at — 7.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 36 unknown 18:35–00:45 (marginal) 89.7° at 19:00 52.3° 3.0
M42 Great Orion Nebula 12 unknown — 42.9° at 23:50 34.3° 0.0
M45 Seven Sisters 21 unknown 18:35–20:10 (marginal) 72.5° at 22:05 15.2° 0.0
NGC 7000 North America Nebula 36 unknown 18:35–19:45 (good) 87.2° at 15:15 89.0° 1.33
V1057 Cyg 36 unknown 18:35–19:45 (good) 87.3° at 15:15 89.0° 1.33
M33 Triangulum Pinwheel 29 unknown 18:35–23:05 (marginal) 79.1° at 19:50 43.2° 1.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-12-22"

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"}.