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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 Wednesday, 30 September 2026 · astronomical night 20:37 → 05:45 (9.13 h) · Moon 78% (waning gibbous) · weather: ERA5 history

M31M31 19:00–20:00: unusableM31 20:00–21:00: poorM31 21:00–23:00: unusableM31 23:00–00:00: poorM31 00:00–02:00: marginalM31 02:00–04:00: poorM31 04:00–05:00: unusableM31 05:00–06:50: poorM31 06:50–07:20: unusableobserve M31 01:10–01:45M42M42 19:00–02:35: unusableM42 02:35–04:00: poorM42 04:00–05:00: unusableM42 05:00–06:50: poorM42 06:50–07:20: unusableM45M45 19:00–23:00: unusableM45 23:00–00:00: poorM45 00:00–01:00: marginalM45 01:00–04:00: poorM45 04:00–05:00: unusableM45 05:00–06:50: poorM45 06:50–07:20: unusableNGC 7000NGC 7000 19:00–20:00: unusableNGC 7000 20:00–21:00: poorNGC 7000 21:00–23:00: unusableNGC 7000 23:00–00:00: poorNGC 7000 00:00–02:00: marginalNGC 7000 02:00–04:00: poorNGC 7000 04:00–07:20: unusableobserve NGC 7000 00:00–00:35V1057 CygV1057 Cyg 19:00–20:00: unusableV1057 Cyg 20:00–21:00: poorV1057 Cyg 21:00–23:00: unusableV1057 Cyg 23:00–00:00: poorV1057 Cyg 00:00–02:00: marginalV1057 Cyg 02:00–04:00: poorV1057 Cyg 04:00–07:20: unusableobserve V1057 Cyg 00:35–01:10M33M33 19:00–20:20: unusableM33 20:20–21:00: poorM33 21:00–23:00: unusableM33 23:00–00:00: poorM33 00:00–02:00: marginalM33 02:00–04:00: poorM33 04:00–05:00: unusableM33 05:00–06:50: poorM33 06:50–07:20: unusableobserve M33 01:45–02:00schedule20:0022:0000:0002:0004:0006:00

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

Schedule

localtargethoursmean quality
19:00–00:00 — nothing worth pointing at — 5.0
00:00–00:35 NGC 7000 0.58 0.55
00:35–01:10 V1057 Cyg 0.58 0.51
01:10–01:45 M31 0.58 0.35
01:45–02:00 M33 0.25 0.31
02:00–07:20 — nothing worth pointing at — 5.33

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 87 25 00:00–02:00 (marginal) 89.6° at 01:25 43.0° 0.58
M42 Great Orion Nebula 12 2 — 42.9° at 06:20 39.0° 0.0
M45 Seven Sisters 31 12 00:00–01:00 (marginal) 72.5° at 04:30 3.2° 0.0
NGC 7000 North America Nebula 100 31 00:00–02:00 (marginal) 87.2° at 21:45 82.1° 0.58
V1057 Cyg 100 31 00:00–02:00 (marginal) 87.3° at 21:45 82.1° 0.58
M33 Triangulum Pinwheel 65 19 00:00–02:00 (marginal) 79.1° at 02:20 32.1° 0.25

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-09-30"

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"}.