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 Friday, 25 September 2026 · astronomical night 20:46 → 05:39 (8.89 h) · Moon 99% (full moon) · weather: ERA5 history

Faded bands: each target's own windows (green good, amber marginal, pink poor). Dark blue: the schedule. Grey columns: twilight.

Schedule

local	target	hours	mean quality
19:10–07:15	— nothing worth pointing at —	12.08

Targets

target	astronomy	overall	best window	highest	Moon sep.
M31 Andromeda Galaxy	54	1	—	89.6° at 01:45	45.0°
M42 Great Orion Nebula	31	0	—	42.9° at 06:40	90.8°
M45 Seven Sisters	61	0	—	72.5° at 04:50	66.5°
NGC 7000 North America Nebula	57	1	—	87.2° at 22:00	56.5°
V1057 Cyg	57	1	—	87.3° at 22:00	56.4°
M33 Triangulum Pinwheel	54	1	—	79.1° at 02:35	42.8°

Left out

M31 — Overcast (≥80 % cloud) for 10.0 of 11.0 dark hours — the sky is closed whatever the geometry says.
M42 — Overcast (≥80 % cloud) for 10.0 of 11.0 dark hours — the sky is closed whatever the geometry says.
M45 — Overcast (≥80 % cloud) for 10.0 of 11.0 dark hours — the sky is closed whatever the geometry says.
NGC 7000 — Overcast (≥80 % cloud) for 10.0 of 11.0 dark hours — the sky is closed whatever the geometry says.
V1057 Cyg — Overcast (≥80 % cloud) for 10.0 of 11.0 dark hours — the sky is closed whatever the geometry says.
M33 — Overcast (≥80 % cloud) for 10.0 of 11.0 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=2026-09-25"

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"}.