Terms of use

Telescope Collimation Lab is provided by Gobling Company. Apple’s standard Licensed Application End User License Agreement applies to App Store use.

Purchase

Paid upfront, with no subscription or in-app purchase. Your App Store region governs the price and refund process.

Your images

Import and share only images you have permission to use. You retain your rights in original files. Original metadata is retained in source backups. Keep independent backups of important work.

Measurement limitations

Manual image-plane geometry is a record aid. It does not certify optical quality, detect rings automatically, establish sky directions or calibrate mechanical turns. Follow the telescope maker’s instructions and use appropriate equipment and observing practices. The original synthetic ring study is a teaching illustration, not an observation or optical simulation.

Local storage

No developer cloud recovery is provided. App/device removal or failure can lose local data. Export your backups to a location you control. Contact maga40@naver.com.