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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 Sunday, 21 October 2040 · astronomical night 20:02 → 06:08 (10.1 h) · Moon 97% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:00–19:35: quality 0.1M31 19:35–20:05: quality 0.3M31 20:05–22:35: quality 0.5M31 22:35–00:55: quality 0.4M31 00:55–06:10: quality 0.3M31 06:10–06:45: quality 0.1observe M31 00:30–02:20observe M31 02:55–03:35M42M42 01:10–02:00: quality 0.2M42 02:00–05:15: quality 0.3M42 05:15–06:10: quality 0.4M42 06:10–06:45: quality 0.2M42 06:45–07:15: quality 0.1observe M42 03:35–05:25M45M45 21:30–21:55: quality 0.2M45 21:55–06:10: quality 0.3M45 06:10–06:45: quality 0.2M45 06:45–07:15: quality 0.1observe M45 05:25–06:10NGC 7000NGC 7000 19:00–19:25: quality 0.2NGC 7000 19:25–19:35: quality 0.1NGC 7000 19:35–20:05: quality 0.4NGC 7000 20:05–20:20: quality 0.8NGC 7000 20:20–23:05: quality 0.7NGC 7000 23:05–00:35: quality 0.6NGC 7000 00:35–02:10: quality 0.5NGC 7000 02:10–02:40: quality 0.4NGC 7000 02:40–03:10: quality 0.3NGC 7000 03:10–03:15: quality 0.2observe NGC 7000 19:35–21:25observe NGC 7000 02:20–02:55V1057 CygV1057 Cyg 19:00–19:25: quality 0.2V1057 Cyg 19:25–19:35: quality 0.1V1057 Cyg 19:35–20:05: quality 0.4V1057 Cyg 20:05–20:20: quality 0.8V1057 Cyg 20:20–23:05: quality 0.7V1057 Cyg 23:05–00:35: quality 0.6V1057 Cyg 00:35–02:10: quality 0.5V1057 Cyg 02:10–02:40: quality 0.4V1057 Cyg 02:40–03:10: quality 0.3V1057 Cyg 03:10–03:15: quality 0.2observe V1057 Cyg 21:25–23:15M33M33 19:00–19:35: quality 0.1M33 19:35–20:05: quality 0.2M33 20:05–20:40: quality 0.5M33 20:40–23:25: quality 0.4M33 23:25–06:10: quality 0.3M33 06:10–06:45: quality 0.1observe M33 23:15–00:30scheduleNGC 7000V1057 CygM33M31M42M4520:0022:0000:0002:0004:0006:00

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
18:30–19:35 — nothing worth pointing at — 1.08
19:35–21:25 NGC 7000 1.83 0.64
21:25–23:15 V1057 Cyg 1.83 0.67
23:15–00:30 M33 1.25 0.33
00:30–02:20 M31 1.83 0.34
02:20–02:55 NGC 7000 0.58 0.36
02:55–03:35 M31 0.67 0.32
03:35–05:25 M42 1.83 0.33
05:25–06:10 M45 0.75 0.33
06:10–07:45 — nothing worth pointing at — 1.58

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 55 unknown 20:05–05:50 (marginal) 89.5° at 00:00 39.8° 2.5
M42 Great Orion Nebula 15 unknown 03:35–06:10 (marginal) 42.9° at 04:55 42.1° 1.83
M45 Seven Sisters 22 unknown 04:40–06:10 (marginal) 72.5° at 03:05 10.4° 0.75
NGC 7000 North America Nebula 76 unknown 20:05–23:45 (good) 87.2° at 20:20 80.2° 2.42
V1057 Cyg 76 unknown 20:05–23:45 (good) 87.3° at 20:20 80.2° 1.83
M33 Triangulum Pinwheel 40 unknown 20:05–00:30 (marginal) 79.2° at 00:55 25.9° 1.25
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2040-10-21"

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