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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 Friday, 16 October 2026 · astronomical night 20:10 → 06:02 (9.86 h) · Moon 34% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:35–19:10: unusableM31 19:10–19:40: poorM31 19:40–20:15: marginalM31 20:15–06:05: goodM31 06:05–06:30: marginalM31 06:30–07:05: poorM31 07:05–07:40: unusableobserve M31 21:30–23:20M42M42 18:35–01:30: unusableM42 01:30–02:00: marginalM42 02:00–06:05: goodM42 06:05–06:35: marginalM42 06:35–07:10: poorM42 07:10–07:40: unusableobserve M42 04:50–06:35M45M45 18:35–21:55: unusableM45 21:55–22:20: marginalM45 22:20–06:05: goodM45 06:05–06:35: marginalM45 06:35–07:10: poorM45 07:10–07:40: unusableobserve M45 03:00–04:50NGC 7000NGC 7000 18:35–19:10: unusableNGC 7000 19:10–19:40: poorNGC 7000 19:40–20:15: marginalNGC 7000 20:15–03:00: goodNGC 7000 03:00–03:35: marginalNGC 7000 03:35–07:40: unusableobserve NGC 7000 19:40–21:30V1057 CygV1057 Cyg 18:35–19:10: unusableV1057 Cyg 19:10–19:40: poorV1057 Cyg 19:40–20:15: marginalV1057 Cyg 20:15–03:00: goodV1057 Cyg 03:00–03:35: marginalV1057 Cyg 03:35–07:40: unusableobserve V1057 Cyg 23:20–01:10M33M33 18:35–19:20: unusableM33 19:20–19:50: poorM33 19:50–20:15: marginalM33 20:15–06:05: goodM33 06:05–06:35: marginalM33 06:35–07:10: poorM33 07:10–07:40: unusableobserve M33 01:10–03:00scheduleNGC 7000M31V1057 CygM33M45M4220:0022:0000:0002:0004:0006:00

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

Schedule

localtargethoursmean quality
18:35–19:40 — nothing worth pointing at — 1.08
19:40–21:30 NGC 7000 1.83 0.77
21:30–23:20 M31 1.83 0.99
23:20–01:10 V1057 Cyg 1.83 0.94
01:10–03:00 M33 1.83 1.0
03:00–04:50 M45 1.83 1.0
04:50–06:35 M42 1.75 0.76
06:35–07:40 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 20:15–06:05 (good) 89.6° at 00:25 111.7° 1.83
M42 Great Orion Nebula 88 unknown 02:00–06:05 (good) 42.9° at 05:15 145.4° 1.75
M45 Seven Sisters 100 unknown 22:20–06:05 (good) 72.5° at 03:25 145.3° 1.83
NGC 7000 North America Nebula 100 unknown 20:15–03:00 (good) 87.3° at 20:40 80.4° 1.83
V1057 Cyg 100 unknown 20:15–03:00 (good) 87.3° at 20:40 80.4° 1.83
M33 Triangulum Pinwheel 100 unknown 20:15–06:05 (good) 79.1° at 01:15 118.4° 1.83
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-10-16"

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"}.