IT Consulting

← single target

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.

Try: an autumn deep-sky night  ·  ← previous night · next night →

Night of Tuesday, 02 September 2025 · astronomical night 21:30 → 05:11 (7.68 h) · Moon 75% (waxing gibbous) · weather: ERA5 history

M31M31 20:40–20:55: quality 0.1M31 20:55–21:05: quality 0.2M31 21:05–21:35: quality 0.3M31 21:35–22:35: quality 0.7M31 22:35–00:00: quality 0.8M31 00:00–01:25: quality 0.9M31 01:25–05:15: quality 1.0M31 05:15–05:50: quality 0.5M31 05:50–06:00: quality 0.2M31 06:00–06:25: quality 0.1observe M31 23:55–01:25M42M42 04:20–04:30: quality 0.4M42 04:30–04:45: quality 0.5M42 04:45–05:00: quality 0.6M42 05:00–05:15: quality 0.7M42 05:15–05:50: quality 0.4M42 05:50–06:25: quality 0.1observe M42 04:25–05:50M45M45 00:45–00:55: quality 0.4M45 00:55–01:10: quality 0.5M45 01:10–01:25: quality 0.6M45 01:25–01:35: quality 0.7M45 01:35–02:20: quality 0.8M45 02:20–03:40: quality 0.9M45 03:40–05:15: quality 1.0M45 05:15–05:50: quality 0.5M45 05:50–06:25: quality 0.2observe M45 02:55–04:25NGC 7000NGC 7000 20:25–20:55: quality 0.1NGC 7000 20:55–21:35: quality 0.4NGC 7000 21:35–01:25: quality 0.8NGC 7000 01:25–03:00: quality 1.0NGC 7000 03:00–04:30: quality 0.9NGC 7000 04:30–05:15: quality 0.8NGC 7000 05:15–05:35: quality 0.4NGC 7000 05:35–05:50: quality 0.3NGC 7000 05:50–06:25: quality 0.1observe NGC 7000 20:55–22:25V1057 CygV1057 Cyg 20:25–20:55: quality 0.1V1057 Cyg 20:55–21:35: quality 0.4V1057 Cyg 21:35–01:25: quality 0.8V1057 Cyg 01:25–03:00: quality 1.0V1057 Cyg 03:00–04:30: quality 0.9V1057 Cyg 04:30–05:15: quality 0.8V1057 Cyg 05:15–05:35: quality 0.4V1057 Cyg 05:35–05:50: quality 0.3V1057 Cyg 05:50–06:25: quality 0.1observe V1057 Cyg 22:25–23:55M33M33 22:10–22:25: quality 0.4M33 22:25–22:40: quality 0.5M33 22:40–22:55: quality 0.6M33 22:55–23:30: quality 0.7M33 23:30–00:50: quality 0.8M33 00:50–01:25: quality 0.9M33 01:25–05:15: quality 1.0M33 05:15–05:50: quality 0.5M33 05:50–06:25: quality 0.2observe M33 01:25–02:55scheduleNGC 7000V1057 CygM31M33M45M4220:0022:0000:0002:0004:0006:00

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
19:50–20:55 — nothing worth pointing at — 1.08
20:55–22:25 NGC 7000 1.5 0.6
22:25–23:55 V1057 Cyg 1.5 0.79
23:55–01:25 M31 1.5 0.89
01:25–02:55 M33 1.5 1.0
02:55–04:25 M45 1.5 0.95
04:25–05:50 M42 1.42 0.5
05:50–06:50 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 100 21:35–05:15 (good) 89.7° at 03:15 107.0° 1.5
M42 Great Orion Nebula 15 15 04:55–05:15 (good) 42.9° at 08:05 142.4° 1.42
M45 Seven Sisters 100 100 01:20–05:15 (good) 72.5° at 06:20 139.2° 1.5
NGC 7000 North America Nebula 100 100 21:35–05:15 (good) 87.2° at 23:30 78.1° 1.5
V1057 Cyg 100 100 21:35–05:15 (good) 87.3° at 23:30 78.1° 1.5
M33 Triangulum Pinwheel 100 100 22:50–05:15 (good) 79.1° at 04:05 112.9° 1.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2025-09-02"

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"}.