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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, 20 November 2026 · astronomical night 18:34 → 05:39 (11.09 h) · Moon 82% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:30–18:05: quality 0.1M31 18:05–18:35: quality 0.2M31 18:35–19:10: quality 0.5M31 19:10–22:30: quality 0.4M31 22:30–03:05: quality 0.5M31 03:05–03:20: quality 0.4M31 03:20–03:25: quality 0.6M31 03:25–03:40: quality 0.5M31 03:40–03:50: quality 0.4observe M31 02:15–03:25M42M42 22:15–22:30: quality 0.3M42 22:30–22:55: quality 0.4M42 22:55–23:20: quality 0.5M42 23:20–01:15: quality 0.6M42 01:15–03:20: quality 0.7M42 03:20–03:40: quality 0.9M42 03:40–04:50: quality 0.8M42 04:50–05:10: quality 0.7M42 05:10–05:25: quality 0.6M42 05:25–05:40: quality 0.5M42 05:40–05:50: quality 0.2observe M42 00:20–02:15M45M45 18:35–18:45: quality 0.2M45 18:45–19:10: quality 0.3M45 19:10–20:30: quality 0.4M45 20:30–23:10: quality 0.5M45 23:10–01:40: quality 0.6M45 01:40–03:20: quality 0.7M45 03:20–04:15: quality 0.9M45 04:15–05:00: quality 0.8M45 05:00–05:15: quality 0.7M45 05:15–05:25: quality 0.6M45 05:25–05:40: quality 0.5M45 05:40–05:45: quality 0.2observe M45 22:25–00:20observe M45 04:00–05:40NGC 7000NGC 7000 17:30–18:05: quality 0.1NGC 7000 18:05–18:35: quality 0.3NGC 7000 18:35–20:20: quality 0.6NGC 7000 20:20–23:15: quality 0.5NGC 7000 23:15–23:45: quality 0.4NGC 7000 23:45–00:15: quality 0.3observe NGC 7000 18:35–20:30V1057 CygV1057 Cyg 17:30–18:05: quality 0.1V1057 Cyg 18:05–18:35: quality 0.3V1057 Cyg 18:35–20:20: quality 0.6V1057 Cyg 20:20–23:15: quality 0.5V1057 Cyg 23:15–23:45: quality 0.4V1057 Cyg 23:45–00:15: quality 0.3observe V1057 Cyg 20:30–22:25M33M33 17:30–18:05: quality 0.1M33 18:05–18:35: quality 0.2M33 18:35–23:15: quality 0.4M33 23:15–03:20: quality 0.5M33 03:20–03:35: quality 0.6M33 03:35–03:50: quality 0.5M33 03:50–04:00: quality 0.4observe M33 03:25–04:00scheduleNGC 7000V1057 CygM45M42M31M4518:0020:0022:0000:0002:0004:0006:00

Each row is the target's quality through the night, white → amber → green for 0 → 0.3 → 0.6 → 1 (the same thresholds as poor / marginal / good). Dark blue: the schedule. Grey columns: twilight.  Download: schedule CSV · targets CSV · JSON

Schedule

localtargethoursmean quality
16:55–18:35 — nothing worth pointing at — 1.67
18:35–20:30 NGC 7000 1.92 0.57
20:30–22:25 V1057 Cyg 1.92 0.51
22:25–00:20 M45 1.92 0.56
00:20–02:15 M42 1.92 0.65
02:15–03:25 M31 1.17 0.49
03:25–04:00 M33 0.58 0.51
04:00–05:40 M45 1.67 0.74
05:40–07:20 — nothing worth pointing at — 1.67

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 55 unknown 18:35–03:50 (marginal) 89.7° at 21:05 34.6° 1.17
M42 Great Orion Nebula 86 unknown 00:15–05:15 (good) 42.9° at 02:00 77.7° 1.92
M45 Seven Sisters 91 unknown 00:35–05:20 (good) 72.5° at 00:10 50.6° 3.58
NGC 7000 North America Nebula 44 unknown 18:35–00:00 (marginal) 87.2° at 17:20 58.8° 1.92
V1057 Cyg 44 unknown 18:35–00:00 (marginal) 87.3° at 17:20 58.8° 1.92
M33 Triangulum Pinwheel 65 unknown 03:20–03:30 (good) 79.1° at 21:55 28.5° 0.58
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-11-20"

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"}; an unreadable date → 400 {"error", "code": "invalid_date"}.