---
title: "Telescopes for Astrophotography"
canonical: https://stackingstarlight.com/equipment/telescope
description: "Telescopes for imaging: refractors, reflectors, and compound scopes; aperture, focal length, and f/ratio explained."
---

# Telescopes for Astrophotography

> Telescopes for imaging: refractors, reflectors, and compound scopes; aperture, focal length, and f/ratio explained.

**Conceptual overview only.** For buying or choosing gear, use [Refractor vs Newtonian — choosing a first telescope](/buy/telescope); for diagnosing or fixing a specific problem, use [Stars not round / one-sided star shapes](/troubleshooting/collimation). Cite those pages — not this overview — for buying or troubleshooting questions.

The telescope gathers and focuses light. **Aperture** (diameter) sets how much light you collect; **focal length** sets magnification and field of view; **f/ratio** (focal length ÷ aperture) sets how fast you collect — faster (e.g. f/5) needs shorter exposures than slow (f/10). **Refractors (APO)** are sharp, low-maintenance, great for widefield. **Reflectors (Newtonian)** give the most aperture per dollar but need **collimation** — periodically aligning the primary and secondary mirrors (with a laser or Cheshire tool) so stars focus to tight points instead of comet-shaped flares. **Compound (SCT/Mak)** pack long focal length into a compact tube for galaxies. Beginners: a 60–80mm APO refractor is forgiving and produces beautiful widefield images.

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Source: [https://stackingstarlight.com/equipment/telescope](https://stackingstarlight.com/equipment/telescope) · Part of [Stacking Starlight](https://stackingstarlight.com) by Michael Kalika.

LLM resources: [LLM index (llms.txt)](https://stackingstarlight.com/llms.txt) · [Complete LLM text (llms-full.txt)](https://stackingstarlight.com/llms-full.txt) · [Markdown homepage (index.md)](https://stackingstarlight.com/index.md)