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SkyChart

Draw sky charts

CaskEducation & ScienceApple silicon · IntelDisabled
Homepage
From homebrew/cask
30-day installs
0
1-year installs
10
Last 365 days
Latest version
4.2.1-4073
Download size
—
arm64 / x86_64 · dmg
Release cadence
Irregular
0 releases in 30 days

SkyChart is Education & Science software for Mac.

Quick facts

Chips
Apple silicon · Intel
Install
brew install --cask skychart
Homebrew
Disabled by Homebrew
Also known as
Cartes du Ciel, skychart

These facts were checked on or after . See each source

About

Draw sky charts

System requirements

macOSVersionChipsDownloadSource
Build for macOS 27, 26, 15, 14, 13, 12, 114.2.1-4073Inteldownloads.sourceforge.net/skychart/skychart-4.2.1-4073-x86_64-macosx.dmgSHA-256 72670b4c3d4145a2f609197d62bb07351d2e7cdce36d889d0d0f9a002158aa47HomebrewChecked
Build for macOS 27, 26, 15, 14, 13, 12, 114.2.1-4073Apple silicon · Not native on Apple silicondownloads.sourceforge.net/skychart/skychart-4.2.1-4073-x86_64-macosx.dmgSHA-256 72670b4c3d4145a2f609197d62bb07351d2e7cdce36d889d0d0f9a002158aa47HomebrewChecked

How to install SkyChart on Mac

  1. In Terminal, run: brew install --cask skychart
  2. Homebrew runs the Install Skychart.pkg installer, which asks for an administrator password.

Install without Homebrew

Download the same file Homebrew uses: downloads.sourceforge.net/skychart/skychart-4.2.1-4073-x86_64-macosx.dmg

SHA-256 only checks that the download is complete; it is not a security certification. See the SHA-256 and download address

Uninstall SkyChart and optional data cleanup

Uninstall command
brew uninstall --cask skychart

A regular uninstall removes the app and keeps its settings and caches.

Uninstalling also removes

Installer receipts (pkgutil)
net.ap-i.pkg.skychart

Deep clean (optional)

Uninstall command
brew uninstall --zap --cask skychart

--zap also deletes the settings, caches and other files listed in the Homebrew definition. They can include data shared with other apps and cannot be restored, and it does not guarantee that nothing is left. Back up any data you need first. To keep settings and caches, leave out --zap.

Files SkyChart can leave on your Mac (3)
Files and folders
~/Library/Application Support/skychart
~/Library/Preferences/net.ap-i.skychart.plist
~/Library/Saved Application State/net.ap-i.skychart.savedState

These entries come from the Homebrew definition, checked . They say what it declares, not what is on your Mac.

SkyChart security facts

Only facts that can be checked, each with its source and date. This is not a safety certification. To check the files you downloaded, scan them on your Mac with OpenNavo.

Distribution
Homebrew
Scan with OpenNavoOpens a scan preview in the OpenNavo app; you decide whether to start it. ClamAV on Mac

Install Details

Tap
homebrew/cask
Installer packages
Install Skychart.pkg
Download URL
https://downloads.sourceforge.net/skychart/skychart-4.2.1-4073-x86_64-macosx.dmg
SHA-256
72670b4c3d4145a2f609197d62bb07351d2e7cdce36d889d0d0f9a002158aa47
Homebrew definition
github.com/homebrew/homebrew-cask/blob/HEAD/Casks/s/skychart.rb
formulae.brew.sh
formulae.brew.sh/cask/skychart

Installation and removal contents

  • Uninstall uninstall

    View full declaration
    {
  "uninstall": [
    {
      "pkgutil": "net.ap-i.pkg.skychart"
    }
  ]
}

  • Install pkg

    Source file: Install Skychart.pkg

    View full declaration
    {
  "pkg": [
    "Install Skychart.pkg"
  ]
}

  • Remove user data zap

    View full declaration
    {
  "zap": [
    {
      "trash": [
        "~/Library/Application Support/skychart",
        "~/Library/Preferences/net.ap-i.skychart.plist",
        "~/Library/Saved Application State/net.ap-i.skychart.savedState"
      ]
    }
  ]
}

Questions about SkyChart

Is SkyChart safe?

Homebrew has disabled SkyChart (it fails macOS Gatekeeper checks), so it can no longer be installed with Homebrew. It was disabled on Sep 1, 2026.

How do I completely uninstall SkyChart on a Mac?

Run brew uninstall --cask skychart. It forgets 1 installer receipt. To delete its settings and caches as well, run brew uninstall --zap --cask skychart. --zap also deletes the settings, caches and other files listed in the Homebrew definition. They can include data shared with other apps and cannot be restored, and it does not guarantee that nothing is left. Back up any data you need first. To keep settings and caches, leave out --zap. That also deletes 3 files and folders, including ~/Library/Application Support/skychart.

Does SkyChart run on Apple silicon (M1 and later) Macs?

It installs, but on Apple silicon Macs it runs through Rosetta 2.

Where does SkyChart store its settings and data?

Its settings are in ~/Library/Preferences/net.ap-i.skychart.plist. Its data is in ~/Library/Application Support/skychart. These locations come from Homebrew’s clean-up list.

What is the latest version of SkyChart?

The latest version is 4.2.1-4073, added to Homebrew on Mar 4, 2021. Run brew upgrade --cask skychart to update it.

What else does installing SkyChart add?

It installs through a .pkg installer, which asks for an administrator password.

Sources

Every fact on this page names its source and check date. Facts past their validity read “as of” their date and are no longer stated as current.