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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, 27 September 2045 · astronomical night 20:41 → 05:42 (9.0 h) · Moon 97% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:40–20:10: quality 0.1M31 20:10–20:45: quality 0.2M31 20:45–23:20: quality 0.4M31 23:20–05:45: quality 0.3M31 05:45–06:15: quality 0.2M31 06:15–06:50: quality 0.1observe M31 23:30–00:35M42M42 02:45–03:00: quality 0.2M42 03:00–03:30: quality 0.3M42 03:30–04:40: quality 0.4M42 04:40–05:45: quality 0.5M42 05:45–06:15: quality 0.3M42 06:15–06:50: quality 0.1observe M42 04:10–05:45M45M45 23:10–23:45: quality 0.2M45 23:45–04:40: quality 0.3M45 04:40–05:45: quality 0.4M45 05:45–06:15: quality 0.2M45 06:15–06:50: quality 0.1observe M45 02:30–04:10NGC 7000NGC 7000 19:40–20:10: quality 0.1NGC 7000 20:10–20:45: quality 0.3NGC 7000 20:45–21:00: quality 0.7NGC 7000 21:00–23:10: quality 0.6NGC 7000 23:10–01:50: quality 0.5NGC 7000 01:50–04:00: quality 0.4NGC 7000 04:00–04:35: quality 0.3NGC 7000 04:35–04:50: quality 0.2observe NGC 7000 20:10–21:50observe NGC 7000 00:35–02:30V1057 CygV1057 Cyg 19:40–20:10: quality 0.1V1057 Cyg 20:10–20:45: quality 0.3V1057 Cyg 20:45–21:00: quality 0.7V1057 Cyg 21:00–23:10: quality 0.6V1057 Cyg 23:10–01:50: quality 0.5V1057 Cyg 01:50–04:00: quality 0.4V1057 Cyg 04:00–04:35: quality 0.3V1057 Cyg 04:35–04:50: quality 0.2observe V1057 Cyg 21:50–23:30M33M33 20:35–20:45: quality 0.1M33 20:45–21:20: quality 0.3M33 21:20–22:25: quality 0.4M33 22:25–05:45: quality 0.3M33 05:45–06:15: quality 0.2M33 06:15–06:50: quality 0.1scheduleNGC 7000V1057 CygM31NGC 7000M45M4220:0022:0000:0002:0004:0006:00

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
19:05–20:10 — nothing worth pointing at — 1.08
20:10–21:50 NGC 7000 1.67 0.53
21:50–23:30 V1057 Cyg 1.67 0.57
23:30–00:35 M31 1.08 0.32
00:35–02:30 NGC 7000 1.92 0.46
02:30–04:10 M45 1.67 0.32
04:10–05:45 M42 1.58 0.46
05:45–07:15 — nothing worth pointing at — 1.5

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 35 unknown 20:45–00:35 (marginal) 89.6° at 01:40 29.0° 1.08
M42 Great Orion Nebula 17 unknown 03:15–05:45 (marginal) 42.9° at 06:30 65.5° 1.58
M45 Seven Sisters 21 unknown 02:30–05:45 (marginal) 72.6° at 04:40 35.5° 1.67
NGC 7000 North America Nebula 66 unknown 20:45–22:00 (good) 87.2° at 21:55 63.4° 3.58
V1057 Cyg 66 unknown 20:45–22:00 (good) 87.2° at 21:55 63.4° 1.67
M33 Triangulum Pinwheel 27 unknown 21:00–00:35 (marginal) 79.2° at 02:30 17.3° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2045-09-27"

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"}.