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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, 13 October 2026 · astronomical night 20:15 → 05:59 (9.73 h) · Moon 11% (waxing crescent) · weather: forecast

M31M31 18:40–03:00: unusableM31 03:00–06:00: goodM31 06:00–06:35: marginalM31 06:35–07:05: poorM31 07:05–07:35: unusableobserve M31 04:50–05:30M42M42 18:40–03:00: unusableM42 03:00–06:00: goodM42 06:00–06:35: marginalM42 06:35–07:05: poorM42 07:05–07:35: unusableobserve M42 05:30–06:35M45M45 18:40–03:00: unusableM45 03:00–06:00: goodM45 06:00–06:35: marginalM45 06:35–07:05: poorM45 07:05–07:35: unusableobserve M45 03:30–04:10NGC 7000NGC 7000 18:40–03:00: unusableNGC 7000 03:00–03:10: goodNGC 7000 03:10–03:45: marginalNGC 7000 03:45–07:35: unusableobserve NGC 7000 03:00–03:30V1057 CygV1057 Cyg 18:40–03:00: unusableV1057 Cyg 03:00–03:10: goodV1057 Cyg 03:10–03:45: marginalV1057 Cyg 03:45–07:35: unusableM33M33 18:40–03:00: unusableM33 03:00–06:00: goodM33 06:00–06:35: marginalM33 06:35–07:05: poorM33 07:05–07:35: unusableobserve M33 04:10–04:50scheduleM4220:0022:0000:0002:0004:0006:00

Faded bands: each target's own windows (green good, amber marginal, pink poor). Dark blue: the schedule. Grey columns: twilight.

Schedule

localtargethoursmean quality
18:40–03:00 — nothing worth pointing at — 8.33
03:00–03:30 NGC 7000 0.5 0.58
03:30–04:10 M45 0.67 1.0
04:10–04:50 M33 0.67 0.95
04:50–05:30 M31 0.67 0.87
05:30–06:35 M42 1.08 0.64
06:35–07:35 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 0 03:00–06:00 (good) 89.7° at 00:35 139.8° 0.67
M42 Great Orion Nebula 83 0 03:00–06:00 (good) 42.9° at 05:25 138.8° 1.08
M45 Seven Sisters 100 0 03:00–06:00 (good) 72.5° at 03:40 178.4° 0.67
NGC 7000 North America Nebula 100 0 03:00–03:10 (good) 87.2° at 20:50 100.2° 0.5
V1057 Cyg 100 0 03:00–03:10 (good) 87.3° at 20:50 100.1° 0.0
M33 Triangulum Pinwheel 100 0 03:00–06:00 (good) 79.1° at 01:25 151.5° 0.67

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-10-13"

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"}.