Asterfolio: Night Notebook
Sessions, Eyepieces & Sketches
$1.99 · Designed for iPad. Not verified for macOS.
Plan target queues, calculate eyepiece geometry, log seeing and transparency, preserve sketches and photos, and export red-light observing notes.
Asterfolio is a red-light-first field notebook for visual astronomers and telescope owners.
Preserve what the eyepiece actually showed, under the sky conditions and optical setup that made it visible.
KEY FEATURES
- Red-light session queue and observation timeline
- Magnification, exit pupil, true field, and resolution math
- Telescope, eyepiece, filter, and observing-site library
- Sketch and image attachments with printable session reports
- Optional local photos through Apple's Photos picker
- Local PDF project brief
- 175 original offline reference plates
- No account, ads, analytics, tracking, subscription, or network requirement
Asterfolio is an observing notebook and optical calculator. It does not predict safe weather, navigation, solar-viewing safety, object visibility, or equipment suitability. Never view the Sun without purpose-built certified solar equipment and current expert guidance.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Robert Corbin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Robert Corbin
- Size
- 136.6 MB
- Category
- Reference
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Age Rating
4+
- 4+
- Copyright
- © 2026 Robert Corbin
