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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, 02 October 2026 · astronomical night 20:33 → 05:47 (9.23 h) · Moon 57% (waning gibbous) · weather: ERA5 history

M31M31 19:00–19:30: unusableM31 19:30–20:35: poorM31 20:35–21:00: marginalM31 21:00–21:15: poorM31 21:15–22:10: marginalM31 22:10–22:50: goodM31 22:50–23:00: marginalM31 23:00–00:00: poorM31 00:00–01:00: marginalM31 01:00–05:50: goodM31 05:50–06:00: marginalM31 06:00–06:55: poorM31 06:55–07:20: unusableobserve M31 00:30–01:55observe M31 05:50–06:00M42M42 19:00–02:25: unusableM42 02:25–02:35: poorM42 02:35–05:50: marginalM42 05:50–06:55: poorM42 06:55–07:20: unusableobserve M42 04:45–05:50M45M45 19:00–22:50: unusableM45 22:50–00:00: poorM45 00:00–02:00: marginalM45 02:00–03:35: goodM45 03:35–05:50: marginalM45 05:50–06:55: poorM45 06:55–07:20: unusableobserve M45 03:20–04:45NGC 7000NGC 7000 19:00–19:30: unusableNGC 7000 19:30–20:35: poorNGC 7000 20:35–22:00: marginalNGC 7000 22:00–22:50: goodNGC 7000 22:50–23:00: marginalNGC 7000 23:00–00:00: poorNGC 7000 00:00–01:00: marginalNGC 7000 01:00–03:35: goodNGC 7000 03:35–04:30: marginalNGC 7000 04:30–07:20: unusableobserve NGC 7000 20:35–22:00V1057 CygV1057 Cyg 19:00–19:30: unusableV1057 Cyg 19:30–20:35: poorV1057 Cyg 20:35–22:00: marginalV1057 Cyg 22:00–22:50: goodV1057 Cyg 22:50–23:00: marginalV1057 Cyg 23:00–00:00: poorV1057 Cyg 00:00–01:00: marginalV1057 Cyg 01:00–03:35: goodV1057 Cyg 03:35–04:30: marginalV1057 Cyg 04:30–07:20: unusableobserve V1057 Cyg 22:00–23:00observe V1057 Cyg 00:00–00:30M33M33 19:00–20:15: unusableM33 20:15–22:00: poorM33 22:00–23:00: marginalM33 23:00–00:00: poorM33 00:00–01:00: marginalM33 01:00–05:50: goodM33 05:50–05:55: marginalM33 05:55–06:55: poorM33 06:55–07:20: unusableobserve M33 01:55–03:20scheduleNGC 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
19:00–20:35 — nothing worth pointing at — 1.58
20:35–22:00 NGC 7000 1.42 0.35
22:00–23:00 V1057 Cyg 1.0 0.61
23:00–00:00 — nothing worth pointing at — 1.0
00:00–00:30 V1057 Cyg 0.5 0.48
00:30–01:55 M31 1.42 0.56
01:55–03:20 M33 1.42 0.7
03:20–04:45 M45 1.42 0.59
04:45–05:50 M42 1.08 0.51
05:50–06:00 M31 0.17 0.3
06:00–07:20 — nothing worth pointing at — 1.33

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 68 01:00–05:50 (good) 89.6° at 01:20 65.6° 1.58
M42 Great Orion Nebula 22 22 02:35–05:50 (marginal) 42.9° at 06:10 34.0° 1.08
M45 Seven Sisters 64 52 02:00–03:35 (good) 72.5° at 04:20 31.5° 1.42
NGC 7000 North America Nebula 100 61 01:00–03:35 (good) 87.3° at 21:35 97.8° 1.42
V1057 Cyg 100 61 01:00–03:35 (good) 87.3° at 21:35 97.8° 1.5
M33 Triangulum Pinwheel 92 64 01:00–05:50 (good) 79.1° at 02:10 58.5° 1.42

💡 API
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-10-02"

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"}.