Your universe, organized.

An image library, observation planner, and sky forecast for your smart telescope. Native support for ZWO SeeStar and DWARFLAB, or import from any scope over your network. Runs on your own hardware, nothing in the cloud.

Download Free See it in action →

macOS Windows iOS tvOS Android Docker

Nebulis library page: a grid of deep-sky object thumbnails with counts of galaxies, nebulae, and clusters

Nebulis gallery page: every captured frame in a searchable grid with a planetarium view button

Nebulis planner page: tonight's visibility score, moon phase, and a night schedule timeline

Nebulis observations page: a calendar of imaging sessions with yearly totals

Drag or swipe to browse

Library

Every capture from your telescope, thumbnailed and organized automatically. Filter by object type, telescope, or favorites.

FITS viewer

Inspect raw subframes and headers before you stack.

Satellite detection

Auto-flags satellite and airplane trails in your frames.

Multi-telescope

Run several scopes into one shared library and catalog.

Sky forecast

Cloud cover, seeing, and moon phase, scored hourly for the night ahead.

Night mode

Red-light display keeps your eyes dark-adapted at the eyepiece.

iOS, tvOS & Android

Browse the same library from your phone, tablet, or TV.

Telescope support

Automatic imports, easy setup.

Seestar S30 / S50 Automatic Native wireless or USB direct import, no setup steps.

DWARFLAB Dwarf II / 3 / Mini Automatic Imports automatically over Wi-Fi (FTP) or USB.

Any other scope Manual Point Nebulis at a shared folder on your network.

Setup · Under 2 minutes

Up and running fast.

01 Install Nebulis Download for Mac or Windows, or run the Docker image. No account to create.

02 Connect your telescope Enter its address or plug in over USB. Nebulis finds it and starts importing.

03 Explore your universe Browse your library, plan tomorrow's session, and check tonight's forecast.

Free download

Your telescope. Every screen.

Server & Web

Runs on your machine, open from any device on your network

macOS · Apple Silicon

macOS 13+ · arm64 · v1.0.2

Download

macOS · Intel

macOS 13+ · x64 · v1.0.2

Download

Windows

Windows 10 / 11 · x64 · v1.0.2

Download

Docker

Self-hosted · linux/amd64

GitHub

Legacy builds · macOS 12.x

macOS 12 · Apple Silicon

arm64 · v1.0.2

Download

macOS 12 · Intel

x64 · v1.0.2

Download

Mobile & TV

Same library, on the go

iOS & tvOS

iPhone · iPad · Apple TV · v1.2.0

App Store

Android

Android 10+ · ARM64 · v1.2.0

Google Play

No subscription. No cloud account. Your images never leave your network.