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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 Saturday, 17 October 2026 · astronomical night 20:09 → 06:03 (9.91 h) · Moon 43% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:35–19:10: unusableM31 19:10–19:40: poorM31 19:40–20:10: marginalM31 20:10–06:05: goodM31 06:05–06:30: marginalM31 06:30–07:00: poorM31 07:00–07:40: unusableobserve M31 21:35–23:30M42M42 18:35–01:25: unusableM42 01:25–01:55: marginalM42 01:55–06:05: goodM42 06:05–06:40: marginalM42 06:40–07:10: poorM42 07:10–07:40: unusableobserve M42 05:15–06:40M45M45 18:35–21:50: unusableM45 21:50–22:20: marginalM45 22:20–06:05: goodM45 06:05–06:40: marginalM45 06:40–07:10: poorM45 07:10–07:40: unusableobserve M45 03:20–05:15NGC 7000NGC 7000 18:35–19:10: unusableNGC 7000 19:10–19:40: poorNGC 7000 19:40–20:10: marginalNGC 7000 20:10–02:55: goodNGC 7000 02:55–03:30: marginalNGC 7000 03:30–07:40: unusableobserve NGC 7000 19:40–21:35V1057 CygV1057 Cyg 18:35–19:10: unusableV1057 Cyg 19:10–19:40: poorV1057 Cyg 19:40–20:10: marginalV1057 Cyg 20:10–02:55: goodV1057 Cyg 02:55–03:30: marginalV1057 Cyg 03:30–07:40: unusableobserve V1057 Cyg 23:30–01:25M33M33 18:35–19:15: unusableM33 19:15–19:50: poorM33 19:50–20:10: marginalM33 20:10–06:05: goodM33 06:05–06:40: marginalM33 06:40–07:10: poorM33 07:10–07:40: unusableobserve M33 01:25–03:20scheduleNGC 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
19:40–21:35 NGC 7000 1.92 0.76
21:35–23:30 M31 1.92 0.95
23:30–01:25 V1057 Cyg 1.92 0.93
01:25–03:20 M33 1.92 1.0
03:20–05:15 M45 1.92 1.0
05:15–06:40 M42 1.42 0.7
06:40–07:40 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 20:10–06:05 (good) 89.7° at 00:20 101.5° 1.92
M42 Great Orion Nebula 89 unknown 01:55–06:05 (good) 42.9° at 05:10 140.9° 1.42
M45 Seven Sisters 100 unknown 22:20–06:05 (good) 72.5° at 03:25 133.5° 1.92
NGC 7000 North America Nebula 100 unknown 20:10–02:55 (good) 87.3° at 20:35 74.2° 1.92
V1057 Cyg 100 unknown 20:10–02:55 (good) 87.3° at 20:35 74.2° 1.92
M33 Triangulum Pinwheel 100 unknown 20:10–06:05 (good) 79.1° at 01:10 107.1° 1.92
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-10-17"

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"}.