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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.

Try: an autumn deep-sky night  ·  ← previous night · next night →

Night of Tuesday, 20 October 2026 · astronomical night 20:05 → 06:07 (10.03 h) · Moon 71% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:30–19:05: unusableM31 19:05–19:35: poorM31 19:35–20:10: marginalM31 20:10–06:10: goodM31 06:10–06:15: marginalM31 06:15–06:50: poorM31 06:50–07:40: unusableobserve M31 21:30–23:25M42M42 18:30–01:15: unusableM42 01:15–01:55: marginalM42 01:55–06:10: goodM42 06:10–06:40: marginalM42 06:40–07:15: poorM42 07:15–07:40: unusableobserve M42 03:15–05:10M45M45 18:30–21:40: unusableM45 21:40–22:20: marginalM45 22:20–06:10: goodM45 06:10–06:40: marginalM45 06:40–07:15: poorM45 07:15–07:40: unusableobserve M45 01:20–03:15observe M45 05:10–06:40NGC 7000NGC 7000 18:30–19:05: unusableNGC 7000 19:05–19:35: poorNGC 7000 19:35–20:10: marginalNGC 7000 20:10–02:45: goodNGC 7000 02:45–03:20: marginalNGC 7000 03:20–07:40: unusableobserve NGC 7000 19:35–21:30V1057 CygV1057 Cyg 18:30–19:05: unusableV1057 Cyg 19:05–19:35: poorV1057 Cyg 19:35–20:10: marginalV1057 Cyg 20:10–02:45: goodV1057 Cyg 02:45–03:20: marginalV1057 Cyg 03:20–07:40: unusableM33M33 18:30–19:05: unusableM33 19:05–20:10: poorM33 20:10–20:20: marginalM33 20:20–06:10: goodM33 06:10–06:30: marginalM33 06:30–07:00: poorM33 07:00–07:40: unusableobserve M33 23:25–01:20scheduleNGC 7000M31M33M45M42M4520:0022:0000:0002:0004:0006:00

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

Schedule

localtargethoursmean quality
18:30–19:35 — nothing worth pointing at — 1.08
19:35–21:30 NGC 7000 1.92 0.58
21:30–23:25 M31 1.92 0.73
23:25–01:20 M33 1.92 0.77
01:20–03:15 M45 1.92 0.95
03:15–05:10 M42 1.92 0.87
05:10–06:40 M45 1.5 0.8
06:40–07:40 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 20:10–06:10 (good) 89.5° at 00:10 69.9° 1.92
M42 Great Orion Nebula 89 unknown 01:55–06:10 (good) 42.9° at 05:00 116.2° 1.92
M45 Seven Sisters 100 unknown 22:20–06:10 (good) 72.5° at 03:10 97.3° 3.42
NGC 7000 North America Nebula 79 unknown 20:10–02:45 (good) 87.3° at 20:25 59.6° 1.92
V1057 Cyg 79 unknown 20:10–02:45 (good) 87.3° at 20:25 59.5° 0.0
M33 Triangulum Pinwheel 100 unknown 20:20–06:10 (good) 79.1° at 01:00 72.1° 1.92

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-10-20"

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"}.