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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, 03 October 2026 · astronomical night 20:31 → 05:48 (9.28 h) · Moon 46% (waning crescent) · weather: ERA5 history

M31M31 18:55–19:30: unusableM31 19:30–20:00: poorM31 20:00–20:35: marginalM31 20:35–05:50: goodM31 05:50–06:25: marginalM31 06:25–06:55: poorM31 06:55–07:25: unusableobserve M31 23:30–01:15M42M42 18:55–02:20: unusableM42 02:20–02:25: poorM42 02:25–04:40: marginalM42 04:40–05:50: goodM42 05:50–06:25: marginalM42 06:25–06:55: poorM42 06:55–07:25: unusableobserve M42 04:45–06:25M45M45 18:55–22:45: unusableM45 22:45–23:10: marginalM45 23:10–05:50: goodM45 05:50–06:25: marginalM45 06:25–06:55: poorM45 06:55–07:25: unusableobserve M45 03:00–04:45NGC 7000NGC 7000 18:55–19:30: unusableNGC 7000 19:30–20:00: poorNGC 7000 20:00–20:35: marginalNGC 7000 20:35–03:40: goodNGC 7000 03:40–04:25: marginalNGC 7000 04:25–07:25: unusableobserve NGC 7000 20:00–21:45V1057 CygV1057 Cyg 18:55–19:30: unusableV1057 Cyg 19:30–20:00: poorV1057 Cyg 20:00–20:35: marginalV1057 Cyg 20:35–03:40: goodV1057 Cyg 03:40–04:25: marginalV1057 Cyg 04:25–07:25: unusableobserve V1057 Cyg 21:45–23:30M33M33 18:55–20:10: unusableM33 20:10–20:35: poorM33 20:35–20:40: marginalM33 20:40–05:50: goodM33 05:50–06:25: marginalM33 06:25–06:55: poorM33 06:55–07:25: unusableobserve M33 01:15–03:00scheduleNGC 7000V1057 CygM31M33M45M4220:0022:0000:0002:0004:0006:00

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

Schedule

localtargethoursmean quality
18:55–20:00 — nothing worth pointing at — 1.08
20:00–21:45 NGC 7000 1.75 0.83
21:45–23:30 V1057 Cyg 1.75 1.0
23:30–01:15 M31 1.75 0.92
01:15–03:00 M33 1.75 0.8
03:00–04:45 M45 1.75 0.74
04:45–06:25 M42 1.67 0.5
06:25–07:25 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 99 20:35–05:50 (good) 89.7° at 01:15 77.7° 1.75
M42 Great Orion Nebula 33 33 04:40–05:50 (good) 42.9° at 06:05 38.8° 1.67
M45 Seven Sisters 82 81 23:10–05:50 (good) 72.5° at 04:20 45.6° 1.75
NGC 7000 North America Nebula 100 99 20:35–03:40 (good) 87.3° at 21:30 105.3° 1.75
V1057 Cyg 100 99 20:35–03:40 (good) 87.3° at 21:30 105.3° 1.75
M33 Triangulum Pinwheel 100 99 20:40–05:50 (good) 79.1° at 02:05 72.1° 1.75
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-10-03"

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"}.