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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 Thursday, 01 October 2026 · astronomical night 20:35 → 05:46 (9.18 h) · Moon 68% (waning gibbous) · weather: ERA5 history

M31M31 19:00–21:00: unusableM31 21:00–21:50: marginalM31 21:50–22:00: poorM31 22:00–02:00: marginalM31 02:00–02:10: goodM31 02:10–05:50: marginalM31 05:50–06:55: poorM31 06:55–07:20: unusableobserve M31 00:00–01:30M42M42 19:00–02:30: unusableM42 02:30–03:10: poorM42 03:10–05:50: marginalM42 05:50–06:55: poorM42 06:55–07:20: unusableobserve M42 04:30–05:50M45M45 19:00–22:55: unusableM45 22:55–00:00: poorM45 00:00–05:50: marginalM45 05:50–06:55: poorM45 06:55–07:20: unusableobserve M45 03:00–04:30NGC 7000NGC 7000 19:00–21:00: unusableNGC 7000 21:00–01:00: marginalNGC 7000 01:00–01:35: goodNGC 7000 01:35–02:00: marginalNGC 7000 02:00–03:00: goodNGC 7000 03:00–04:25: marginalNGC 7000 04:25–04:35: poorNGC 7000 04:35–07:20: unusableobserve NGC 7000 21:00–22:30V1057 CygV1057 Cyg 19:00–21:00: unusableV1057 Cyg 21:00–01:00: marginalV1057 Cyg 01:00–01:35: goodV1057 Cyg 01:35–02:00: marginalV1057 Cyg 02:00–03:00: goodV1057 Cyg 03:00–04:25: marginalV1057 Cyg 04:25–04:35: poorV1057 Cyg 04:35–07:20: unusableobserve V1057 Cyg 22:30–00:00M33M33 19:00–21:00: unusableM33 21:00–21:15: poorM33 21:15–21:50: marginalM33 21:50–22:00: poorM33 22:00–05:50: marginalM33 05:50–06:55: poorM33 06:55–07:20: unusableobserve M33 01:30–03:00scheduleNGC 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
19:00–21:00 — nothing worth pointing at — 2.0
21:00–22:30 NGC 7000 1.5 0.42
22:30–00:00 V1057 Cyg 1.5 0.47
00:00–01:30 M31 1.5 0.46
01:30–03:00 M33 1.5 0.54
03:00–04:30 M45 1.5 0.42
04:30–05:50 M42 1.33 0.36
05:50–07:20 — nothing worth pointing at — 1.5

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 93 59 02:00–02:10 (good) 89.5° at 01:25 53.8° 1.5
M42 Great Orion Nebula 15 13 03:10–05:50 (marginal) 42.9° at 06:15 34.1° 1.33
M45 Seven Sisters 46 36 00:00–05:50 (marginal) 72.5° at 04:25 17.3° 1.5
NGC 7000 North America Nebula 100 59 02:00–03:00 (good) 87.2° at 21:40 89.9° 1.5
V1057 Cyg 100 59 02:00–03:00 (good) 87.3° at 21:40 90.0° 1.5
M33 Triangulum Pinwheel 84 56 22:00–05:50 (marginal) 79.1° at 02:15 45.1° 1.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-10-01"

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"}.