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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, 21 October 2026 · astronomical night 20:03 → 06:08 (10.08 h) · Moon 80% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:30–19:00: unusableM31 19:00–20:05: poorM31 20:05–20:50: marginalM31 20:50–06:10: goodM31 06:10–06:15: marginalM31 06:15–06:45: poorM31 06:45–07:45: unusableobserve M31 03:15–05:10M42M42 18:30–01:10: unusableM42 01:10–01:55: marginalM42 01:55–06:10: goodM42 06:10–06:45: marginalM42 06:45–07:15: poorM42 07:15–07:45: unusableobserve M42 05:10–06:45M45M45 18:30–21:35: unusableM45 21:35–22:40: marginalM45 22:40–06:10: goodM45 06:10–06:45: marginalM45 06:45–07:15: poorM45 07:15–07:45: unusableobserve M45 23:25–01:20NGC 7000NGC 7000 18:30–19:00: unusableNGC 7000 19:00–19:35: poorNGC 7000 19:35–20:05: marginalNGC 7000 20:05–23:55: goodNGC 7000 23:55–03:15: marginalNGC 7000 03:15–07:45: unusableobserve NGC 7000 19:35–21:30V1057 CygV1057 Cyg 18:30–19:00: unusableV1057 Cyg 19:00–19:35: poorV1057 Cyg 19:35–20:05: marginalV1057 Cyg 20:05–23:55: goodV1057 Cyg 23:55–03:15: marginalV1057 Cyg 03:15–07:45: unusableobserve V1057 Cyg 21:30–23:25M33M33 18:30–19:00: unusableM33 19:00–20:05: poorM33 20:05–22:05: marginalM33 22:05–06:10: goodM33 06:10–06:25: marginalM33 06:25–06:55: poorM33 06:55–07:45: unusableobserve M33 01:20–03:15scheduleNGC 7000V1057 CygM45M33M31M4220:0022:0000:0002:0004:0006:00

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

Schedule

localtargethoursmean quality
18:30–19:35 — nothing worth pointing at — 1.08
19:35–21:30 NGC 7000 1.92 0.54
21:30–23:25 V1057 Cyg 1.92 0.61
23:25–01:20 M45 1.92 0.72
01:20–03:15 M33 1.92 0.73
03:15–05:10 M31 1.92 0.9
05:10–06:45 M42 1.58 0.71
06:45–07:45 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 96 unknown 20:50–06:10 (good) 89.7° at 00:05 59.3° 1.92
M42 Great Orion Nebula 89 unknown 01:55–06:10 (good) 42.9° at 04:55 106.0° 1.58
M45 Seven Sisters 100 unknown 22:40–06:10 (good) 72.5° at 03:05 84.7° 1.92
NGC 7000 North America Nebula 63 unknown 20:05–23:55 (good) 87.3° at 20:20 57.0° 1.92
V1057 Cyg 62 unknown 20:05–23:55 (good) 87.3° at 20:20 56.9° 1.92
M33 Triangulum Pinwheel 100 unknown 22:05–06:10 (good) 79.1° at 00:55 60.0° 1.92
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-10-21"

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"}.