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, 18 July 2026 · astronomical night 22:53 → 04:01 (5.13 h) · Moon 25% (waxing crescent) · weather: ERA5 history

M31M31 23:40–23:50: quality 0.4M31 23:50–00:05: quality 0.5M31 00:05–00:25: quality 0.6M31 00:25–00:40: quality 0.7M31 00:40–01:30: quality 0.8M31 01:30–03:00: quality 0.9M31 03:00–03:10: quality 0.8M31 03:10–04:00: quality 0.9M31 04:00–04:05: quality 0.7M31 04:05–04:50: quality 0.4M31 04:50–05:35: quality 0.1observe M31 00:50–02:10observe M31 04:05–04:50M42M45M45 03:50–04:05: quality 0.4M45 04:05–04:30: quality 0.2M45 04:30–04:50: quality 0.3M45 04:50–05:35: quality 0.1observe M45 03:50–04:05NGC 7000NGC 7000 21:25–22:10: quality 0.1NGC 7000 22:10–22:55: quality 0.4NGC 7000 22:55–23:20: quality 0.9NGC 7000 23:20–03:00: quality 1.0NGC 7000 03:00–04:00: quality 0.9NGC 7000 04:00–04:05: quality 0.7NGC 7000 04:05–04:50: quality 0.4NGC 7000 04:50–05:35: quality 0.1observe NGC 7000 22:10–23:30V1057 CygV1057 Cyg 21:25–22:10: quality 0.1V1057 Cyg 22:10–22:55: quality 0.4V1057 Cyg 22:55–23:20: quality 0.9V1057 Cyg 23:20–03:00: quality 1.0V1057 Cyg 03:00–04:00: quality 0.9V1057 Cyg 04:00–04:05: quality 0.7V1057 Cyg 04:05–04:50: quality 0.4V1057 Cyg 04:50–05:35: quality 0.1observe V1057 Cyg 23:30–00:50M33M33 01:15–01:20: quality 0.4M33 01:20–01:35: quality 0.5M33 01:35–01:50: quality 0.6M33 01:50–02:05: quality 0.7M33 02:05–04:00: quality 0.8M33 04:00–04:05: quality 0.7M33 04:05–04:50: quality 0.3M33 04:50–05:35: quality 0.1observe M33 02:10–03:50scheduleNGC 7000V1057 CygM31M33M3122:0000:0002:0004:0006:00

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
20:50–22:10 — nothing worth pointing at — 1.33
22:10–23:30 NGC 7000 1.33 0.64
23:30–00:50 V1057 Cyg 1.33 0.99
00:50–02:10 M31 1.33 0.85
02:10–03:50 M33 1.67 0.8
03:50–04:05 M45 0.25 0.38
04:05–04:50 M31 0.75 0.35
04:50–06:05 — nothing worth pointing at — 1.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 93 00:15–04:05 (good) 89.5° at 06:15 137.3° 2.08
M42 Great Orion Nebula 0 0 — 42.9° at 11:10 91.9° 0.0
M45 Seven Sisters 6 5 03:50–04:05 (marginal) 72.5° at 09:20 116.8° 0.25
NGC 7000 North America Nebula 100 94 22:55–04:05 (good) 87.2° at 02:35 123.2° 1.33
V1057 Cyg 100 94 22:55–04:05 (good) 87.3° at 02:35 123.3° 1.33
M33 Triangulum Pinwheel 64 58 01:40–04:05 (good) 79.1° at 07:10 140.2° 1.67

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-07-18"

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"}.