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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 Saturday, 21 November 2026 · astronomical night 18:33 → 05:40 (11.12 h) · Moon 90% (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 18:35–20:00: quality 0.4M31 20:00–23:10: quality 0.3M31 23:10–03:05: quality 0.4M31 03:05–03:40: quality 0.3M31 03:40–03:45: quality 0.2observe M31 02:15–03:20M42M42 22:10–22:15: quality 0.2M42 22:15–22:45: quality 0.3M42 22:45–23:15: quality 0.4M42 23:15–01:25: quality 0.5M42 01:25–04:30: quality 0.6M42 04:30–04:50: quality 0.8M42 04:50–05:05: quality 0.7M42 05:05–05:20: quality 0.6M42 05:20–05:35: quality 0.5M42 05:35–05:45: quality 0.4observe M42 00:20–02:15observe M42 03:35–05:45M45M45 18:30–18:35: quality 0.1M45 18:35–19:00: quality 0.2M45 19:00–21:25: quality 0.3M45 21:25–00:50: quality 0.4M45 00:50–04:30: quality 0.5M45 04:30–04:55: quality 0.8M45 04:55–05:10: quality 0.7M45 05:10–05:25: quality 0.6M45 05:25–05:35: quality 0.5M45 05:35–05:45: quality 0.4observe M45 22:25–00:20NGC 7000NGC 7000 17:30–18:05: quality 0.1NGC 7000 18:05–18:35: quality 0.3NGC 7000 18:35–19:35: quality 0.6NGC 7000 19:35–22:15: quality 0.5NGC 7000 22:15–23:30: quality 0.4NGC 7000 23:30–00:05: quality 0.3NGC 7000 00:05–00:15: quality 0.2observe NGC 7000 18:35–20:30V1057 CygV1057 Cyg 17:30–18:05: quality 0.1V1057 Cyg 18:05–18:35: quality 0.3V1057 Cyg 18:35–19:35: quality 0.6V1057 Cyg 19:35–22:15: quality 0.5V1057 Cyg 22:15–23:30: quality 0.4V1057 Cyg 23:30–00:05: quality 0.3V1057 Cyg 00:05–00:15: quality 0.2observe V1057 Cyg 20:30–22:25M33M33 17:30–18:05: quality 0.1M33 18:05–18:35: quality 0.2M33 18:35–20:00: quality 0.4M33 20:00–23:10: quality 0.3M33 23:10–03:20: quality 0.4M33 03:20–03:50: quality 0.3M33 03:50–03:55: quality 0.2observe M33 03:20–03:35scheduleNGC 7000V1057 CygM45M42M31M4218:0020:0022:0000:0002:0004:0006:00

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 0.55
20:30–22:25 V1057 Cyg 1.92 0.48
22:25–00:20 M45 1.92 0.4
00:20–02:15 M42 1.92 0.54
02:15–03:20 M31 1.08 0.38
03:20–03:35 M33 0.25 0.33
03:35–05:45 M42 2.17 0.62
05:45–07:20 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 35 unknown 18:35–03:20 (marginal) 89.5° at 21:00 29.5° 1.08
M42 Great Orion Nebula 81 unknown 03:00–05:15 (good) 42.9° at 01:55 66.4° 4.08
M45 Seven Sisters 82 unknown 04:30–05:15 (good) 72.5° at 00:05 36.8° 1.92
NGC 7000 North America Nebula 41 unknown 18:35–23:50 (marginal) 87.2° at 17:20 63.1° 1.92
V1057 Cyg 41 unknown 18:35–23:50 (marginal) 87.3° at 17:20 63.1° 1.92
M33 Triangulum Pinwheel 38 unknown 18:35–03:35 (marginal) 79.1° at 21:55 18.2° 0.25
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-11-21"

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