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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 Monday, 28 September 2026 · astronomical night 20:40 → 05:42 (9.03 h) · Moon 94% (waning gibbous) · weather: ERA5 history

M31M31 19:05–19:40: unusableM31 19:40–22:00: poorM31 22:00–23:00: marginalM31 23:00–01:00: poorM31 01:00–07:20: unusableobserve M31 22:40–23:00M42M42 19:05–07:20: unusableM45M45 19:05–23:05: unusableM45 23:05–01:00: poorM45 01:00–07:20: unusableNGC 7000NGC 7000 19:05–19:40: unusableNGC 7000 19:40–21:00: poorNGC 7000 21:00–00:00: marginalNGC 7000 00:00–01:00: poorNGC 7000 01:00–07:20: unusableobserve NGC 7000 21:00–21:50observe NGC 7000 23:00–00:00V1057 CygV1057 Cyg 19:05–19:40: unusableV1057 Cyg 19:40–21:00: poorV1057 Cyg 21:00–00:00: marginalV1057 Cyg 00:00–01:00: poorV1057 Cyg 01:00–07:20: unusableobserve V1057 Cyg 21:50–22:40M33M33 19:05–20:30: unusableM33 20:30–22:00: poorM33 22:00–23:00: marginalM33 23:00–01:00: poorM33 01:00–07:20: unusablescheduleNGC 7000V1057 CygNGC 700020:0022:0000:0002:0004:0006:00

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

Schedule

localtargethoursmean quality
19:05–21:00 — nothing worth pointing at — 1.92
21:00–21:50 NGC 7000 0.83 0.39
21:50–22:40 V1057 Cyg 0.83 0.51
22:40–23:00 M31 0.33 0.35
23:00–00:00 NGC 7000 1.0 0.39
00:00–07:20 — nothing worth pointing at — 7.33

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 41 13 22:00–23:00 (marginal) 89.7° at 01:35 29.3° 0.33
M42 Great Orion Nebula 14 0 — 42.9° at 06:25 57.4° 0.0
M45 Seven Sisters 17 2 — 72.5° at 04:40 25.3° 0.0
NGC 7000 North America Nebula 71 27 21:00–00:00 (marginal) 87.3° at 21:50 67.9° 1.83
V1057 Cyg 71 27 21:00–00:00 (marginal) 87.3° at 21:50 67.9° 0.83
M33 Triangulum Pinwheel 32 10 22:00–23:00 (marginal) 79.1° at 02:25 14.7° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-09-28"

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"}.