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 Monday, 02 March 2026 · astronomical night 19:44 → 05:20 (9.6 h) · Moon 100% (full moon) · weather: ERA5 history

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

local	target	hours	mean quality
18:10–19:45	— nothing worth pointing at —	1.58
19:45–20:20	M31	0.58	0.36
20:20–20:45	M33	0.42	0.34
20:45–21:00	M45	0.25	0.36
21:00–06:55	— nothing worth pointing at —	9.92

Targets

target	astronomy	overall	best window	highest	Moon sep.	scheduled h
M31 Andromeda Galaxy	18	9	19:45–20:30 (marginal)	89.7° at 14:25	120.6°	0.58
M42 Great Orion Nebula	25	7	20:00–20:25 (marginal)	42.9° at 19:15	74.9°	0.0
M45 Seven Sisters	41	11	19:45–21:00 (marginal)	72.5° at 17:25	95.8°	0.25
NGC 7000 North America Nebula	23	0	—	87.3° at 10:35	122.1°	0.0
V1057 Cyg	23	0	—	87.3° at 10:35	122.2°	0.0
M33 Triangulum Pinwheel	21	10	19:45–20:45 (marginal)	79.1° at 15:15	120.2°	0.42

Left out

M42 — its best window (20:00–20:25) is outranked by M31, M33
NGC 7000 — Overcast (≥80 % cloud) for 9.5 of 11.8 dark hours — the sky is closed whatever the geometry says.
V1057 Cyg — Overcast (≥80 % cloud) for 9.5 of 11.8 dark hours — the sky is closed whatever the geometry says.

💡 API

curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2026-03-02"

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"}.