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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, 16 October 2027 · astronomical night 20:11 → 06:02 (9.85 h) · Moon 98% (full moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:10–19:40: quality 0.1M31 19:40–20:15: quality 0.2M31 20:15–20:25: quality 0.5M31 20:25–22:40: quality 0.4M31 22:40–02:05: quality 0.3M31 02:05–02:10: quality 0.2M31 02:10–06:05: quality 0.3M31 06:05–06:35: quality 0.1observe M31 23:10–23:45M42M42 01:30–02:05: quality 0.2M42 02:05–03:25: quality 0.3M42 03:25–06:05: quality 0.4M42 06:05–06:35: quality 0.2M42 06:35–07:10: quality 0.1observe M42 02:25–04:35M45M45 21:55–22:35: quality 0.2M45 22:35–00:40: quality 0.3M45 00:40–01:30: quality 0.2M45 01:30–01:35: quality 0.3M45 01:35–02:40: quality 0.2M45 02:40–05:45: quality 0.3M45 05:45–06:05: quality 0.4M45 06:05–06:35: quality 0.2M45 06:35–07:10: quality 0.1observe M45 04:35–06:05NGC 7000NGC 7000 19:10–19:40: quality 0.1NGC 7000 19:40–19:55: quality 0.4NGC 7000 19:55–20:15: quality 0.3NGC 7000 20:15–21:00: quality 0.7NGC 7000 21:00–23:35: quality 0.6NGC 7000 23:35–01:25: quality 0.5NGC 7000 01:25–02:50: quality 0.4NGC 7000 02:50–03:20: quality 0.3NGC 7000 03:20–03:35: quality 0.2observe NGC 7000 19:40–21:25V1057 CygV1057 Cyg 19:10–19:40: quality 0.1V1057 Cyg 19:40–19:55: quality 0.4V1057 Cyg 19:55–20:15: quality 0.3V1057 Cyg 20:15–21:00: quality 0.7V1057 Cyg 21:00–23:35: quality 0.6V1057 Cyg 23:35–01:25: quality 0.5V1057 Cyg 01:25–02:50: quality 0.4V1057 Cyg 02:50–03:20: quality 0.3V1057 Cyg 03:20–03:35: quality 0.2observe V1057 Cyg 21:25–23:10observe V1057 Cyg 23:45–02:25M33M33 19:40–20:15: quality 0.2M33 20:15–22:25: quality 0.4M33 22:25–01:35: quality 0.3M33 01:35–02:40: quality 0.2M33 02:40–06:05: quality 0.3M33 06:05–06:25: quality 0.2M33 06:25–06:35: quality 0.1scheduleNGC 7000V1057 CygV1057 CygM42M4520:0022:0000:0002:0004:0006:00

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
18:35–19:40 — nothing worth pointing at — 1.08
19:40–21:25 NGC 7000 1.75 0.55
21:25–23:10 V1057 Cyg 1.75 0.6
23:10–23:45 M31 0.58 0.31
23:45–02:25 V1057 Cyg 2.67 0.47
02:25–04:35 M42 2.17 0.35
04:35–06:05 M45 1.5 0.33
06:05–07:35 — nothing worth pointing at — 1.5

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 37 unknown 20:15–23:45 (marginal) 89.7° at 00:25 30.4° 0.58
M42 Great Orion Nebula 20 unknown 02:25–06:05 (marginal) 42.9° at 05:15 53.6° 2.17
M45 Seven Sisters 21 unknown 04:35–06:05 (marginal) 72.5° at 03:30 20.1° 1.5
NGC 7000 North America Nebula 68 unknown 20:15–22:10 (good) 87.3° at 20:40 70.1° 1.75
V1057 Cyg 68 unknown 20:15–22:10 (good) 87.3° at 20:40 70.1° 4.42
M33 Triangulum Pinwheel 32 unknown 20:15–23:40 (marginal) 79.1° at 01:15 15.6° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-10-16"

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"}.