# Telescope: Night Sky Guide — Stargazing Guide & Sky Catalog

> Stargazing Guide & Sky Catalog (iPhone/iPad app by Linh Phan Nhat Khanh.)

- Source: https://appshunter.io/ios/app/telescope-night-sky-guide/id6768306075 (this page in markdown: same URL + `.md`)
- Developer: [Linh Phan Nhat Khanh](https://appshunter.io/developer/1777727575)
- Category: Reference, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English
- Released: 2026-06-11
- Data updated: 2026-06-19
- User reviews in markdown: https://appshunter.io/ios/app/telescope-night-sky-guide/id6768306075/reviews.md

## What is Telescope?

Telescope turns your iPhone into a complete stargazing companion. Whether you're a first-time sky-watcher or a seasoned amateur astronomer, Telescope helps you plan your sessions, identify what's overhead, and keep a lasting record of everything you observe.

Tonight tab — know what to look at before you step outside. Telescope computes real-time visibility for hundreds of deep-sky objects and planets based on your GPS location. Every object is ranked by peak altitude so you always start with the best targets. Filter by type — planets, stars, nebulae, galaxies, open clusters, globular clusters — and tap any row for full details.

Full Catalog — browse the complete object library at any time. Each entry shows magnitude, constellation, minimum aperture needed (naked eye, binoculars, or telescope size), and a description. Mark favorites to jump back quickly, or add objects to your wishlist for future sessions.

Observation Log — record your sightings as you make them. Log date, location, telescope used, conditions, and personal notes for every object you observe. Your history builds into a searchable personal archive of the night sky.

Accurate Astronomy — positions are computed using established low-precision ephemeris formulae (Meeus, Duffett-Smith) accurate to roughly ±1°. Planet positions update in real time. All calculations happen on-device; no internet connection required.

- Tonight visibility ranked by peak altitude and score
- Real-time planet positions for Mercury, Venus, Mars, Jupiter, Saturn
- Deep-sky catalog: nebulae, galaxies, clusters, and more
- Personal observation log with notes and conditions
- Favorites and wishlist for fast session planning
- Works fully offline


## Version history (last 1 release)

### 1.0 — 2026-06-11

No release notes.

## More apps by Linh Phan Nhat Khanh

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- [Controller Fly for DJI Drones](https://appshunter.io/ios/app/controller-fly-for-dji-drones/id6752404884)
- [Quick Note: Notepad & Widget](https://appshunter.io/ios/app/quick-note-notepad-and-widget/id6756231129)
- [Year Plan - Goal Planner](https://appshunter.io/ios/app/year-plan-goal-planner/id6760195784)
- [TimeBuddy - World Clock](https://appshunter.io/ios/app/timebuddy-world-clock/id6768292874)
- [HabitForge: Streak Tracker](https://appshunter.io/ios/app/habitforge-streak-tracker/id6768294604)

All apps by Linh Phan Nhat Khanh: https://appshunter.io/developer/1777727575

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-19.*