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 Saturday, 16 May 2026 · astronomical night 22:31 → 04:02 (5.52 h) · Moon 0% (new moon) · weather: ERA5 history

M31M31 03:50–04:00: quality 0.4M31 04:00–04:05: quality 0.5M31 04:05–04:40: quality 0.3M31 04:40–04:50: quality 0.4M31 04:50–05:30: quality 0.1observe M31 03:50–04:05observe M31 04:35–04:50M42M45NGC 7000NGC 7000 23:50–00:00: quality 0.1NGC 7000 00:00–00:10: quality 0.3NGC 7000 00:10–00:35: quality 0.4NGC 7000 00:35–00:55: quality 0.5NGC 7000 00:55–01:00: quality 0.6NGC 7000 01:00–02:20: quality 0.7NGC 7000 02:20–03:10: quality 0.8NGC 7000 03:10–04:00: quality 0.9NGC 7000 04:00–04:05: quality 1.0NGC 7000 04:05–04:50: quality 0.5NGC 7000 04:50–05:30: quality 0.1observe NGC 7000 00:00–01:40observe NGC 7000 04:05–04:35V1057 CygV1057 Cyg 23:50–00:00: quality 0.1V1057 Cyg 00:00–00:10: quality 0.3V1057 Cyg 00:10–00:35: quality 0.4V1057 Cyg 00:35–01:00: quality 0.5V1057 Cyg 01:00–02:20: quality 0.7V1057 Cyg 02:20–03:10: quality 0.8V1057 Cyg 03:10–04:00: quality 0.9V1057 Cyg 04:00–04:05: quality 1.0V1057 Cyg 04:05–04:50: quality 0.5V1057 Cyg 04:50–05:30: quality 0.1observe V1057 Cyg 01:40–03:50M33M33 05:20–05:30: quality 0.1scheduleNGC 7000V1057 Cyg22:0000:0002:0004:00

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
20:30–00:00 — nothing worth pointing at — 3.5
00:00–01:40 NGC 7000 1.67 0.53
01:40–03:50 V1057 Cyg 2.17 0.79
03:50–04:05 M31 0.25 0.42
04:05–04:35 NGC 7000 0.5 0.49
04:35–04:50 M31 0.25 0.36
04:50–06:00 — nothing worth pointing at — 1.17

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 5 5 04:25–04:50 (marginal) 89.7° at 10:25 39.5° 0.5
M42 Great Orion Nebula 0 0 — 42.9° at 15:20 41.7° 0.0
M45 Seven Sisters 0 0 — 72.5° at 13:30 2.5° 0.0
NGC 7000 North America Nebula 99 83 01:00–04:05 (good) 87.2° at 06:40 79.4° 2.17
V1057 Cyg 99 83 01:00–04:05 (good) 87.3° at 06:40 79.4° 2.17
M33 Triangulum Pinwheel 0 0 — 79.1° at 11:15 27.6° 0.0

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-05-16"

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"}.