Your universe.
Captured. Beautifully
organized.

A full image library, observation planner, and sky forecast for your smart telescope. Works natively with ZWO SeeStar and DWARFLAB scopes, and imports any folder of images over your local network.

Download Free See what it does →
macOS Windows iOS tvOS Android · soon
Nebulis image library
5,000+
Deep-sky objects
Messier · NGC · IC · Sharpless
6
Platforms
Mac · Win · iOS · tvOS · Android · Docker
FITS+JPG
File support
Headers · subframes · thumbnails
100%
Local & private
No cloud account required
09 Modules · Everything in one place

Built around how you
actually observe.

Connect a SeeStar or Dwarf natively, or point Nebulis at any folder of images over your local network to import from any scope.

Core
Image Library
Every capture from your SeeStar or Dwarf, thumbnailed and cataloged automatically. Filter by galaxy, nebula, cluster, date, or telescope. Star your favorites.
Weather
Sky Forecast
Cloud cover, seeing, moon phase, and humidity distilled into a single 0–100 visibility score for every hour of the night.
Planner
Observation Planner
Real altitude curves for every object tonight. Build your nightly plan, rank targets by peak visibility window, and know exactly when to shoot.
Viewer
FITS Viewer
See exactly what's in your raw frames before you stack. Inspect FITS headers, compare stacked vs. subframes, and spot satellite trails frame by frame.
Detect
Satellite Detection
Automatically detects and identifies satellite and airplane trails in your raw FITS subframes, so nothing ruins your final stack.
Mobile
iOS · tvOS · Android
Browse your full image library from your iPhone, iPad, Apple TV, or Android device. Same library, every screen.
iOS tvOS Android
Display
Night Mode
Red-light display mode preserves your dark-adapted vision while you check targets at the eyepiece.
Multi
Multi-telescope
Manage multiple telescopes from one interface. Each scope keeps its own library while sharing the same catalog and planner.
History
Observation Calendar
A full history of every session, organized by date. Review notes, replay altaz charts, and track your progress over time.
Telescope Support · Import Methods

Automatic imports,
easy setup.

Native support for ZWO SeeStar and DWARFLAB scopes. Or point Nebulis at any organized folder over your network.

  • Auto: fully automatic, syncs without any manual steps
  • Manual Import: point Nebulis at any folder to import
  • All imports are local; nothing leaves your network
Telescope SMB USB Manual Notes
Seestar S30 / S50 Auto Auto Yes Native wireless or USB direct import
DWARFLAB Dwarf — Auto Yes Automatic import when connected over USB
Any scope Auto — Yes Nebulis-defined folder structure over SMB
Planner · Altitude Curves

Know exactly what
to shoot tonight.

The planner uses your location to calculate live altitude curves for every object in the NGC, Messier, IC, and Sharpless catalogs. Build your nightly plan and Nebulis ranks every target by peak altitude and visibility window.

  • Altitude and azimuth curves for any date
  • Drag and drop interactive night timeline
  • Rank targets by peak altitude and window
  • Catalog image preview for every object
Nebulis observation planner
Forecast · Hourly Visibility Score

Astronomy-specific
weather, hourly.

Generic weather apps don't tell you about atmospheric seeing or moon phase. Nebulis combines cloud cover, humidity, seeing index, and moon illumination into a single 0–100 visibility score for every hour of the night.

  • Per-hour cloud cover, seeing, and moon phase
  • Composite 0–100 visibility score
  • Sunset and astronomical twilight markers
  • Automatic location detection
Nebulis sky forecast
Observation Log · Session History

Every session,
cataloged.

Nebulis automatically organizes every capture into a per-object observation log. Stack counts, exposure totals, conditions, and the resulting frames. All in one place, ready to revisit or share.

  • Auto-grouped by object and session
  • Stack counts and total integration time
  • Conditions snapshot for every session
  • One-click access to the originals
Nebulis observation log
Setup · 04 Steps · Under 2 Min

Up and running
in minutes.

No cloud account. No subscription. Just download, connect, and go.

01
Install Nebulis
Download the Mac or Windows installer and run it. Setup takes under two minutes.
Mac · Windows
02
Connect your telescope
Connect over your local network by entering your telescope's IP address or hostname, or plug in directly via USB. Nebulis scans and imports automatically. No drivers, no cables.
ZWO SeeStar · DWARFLAB Dwarf II · Dwarf 3
03
Import your sessions
Hit sync and Nebulis pulls in every session: JPEGs, FITS files, and subframes. Each object is matched against the NGC, Messier, and IC catalogs.
FITS · JPEG · Subframes
04
Explore your universe
Browse your library, plan tomorrow's session, check tonight's forecast, and view raw FITS data. Everything in one window.
Library · Planner · Forecast · Gallery
Free Download · Local Network

Your telescope.
Every screen.

Install the Hub where your images live, then connect from any device on your local network.

Server & Web Client
Runs on your machine · access from any device
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
LEGACY BUILDS · macOS 12.x
macOS 12 · Apple Silicon
macOS 12.x · arm64 · v1.0.2
Download
macOS 12 · Intel
macOS 12.x · x64 · v1.0.2
Download
Clients
Mobile and TV Apps
iOS & tvOS
iPhone · iPad · Apple TV · v1.0.0
App Store
Android
Android 10+ · ARM64
soon

No subscription · No cloud · Your data never leaves your network