Tools
Interactive calculators and tools to help with telescope selection and astronomy planning.
Telescope Simulator
See what planets, nebulae, and galaxies actually look like through any telescope. Compare views, not just specs.
Telescope Resolution Calculator
Complete optical analysis: Dawes limit, limiting magnitude, eyepiece coverage, target difficulty, and side-by-side telescope comparison.
Magnification & Field of View Calculator
Calculate magnification, true field of view, and exit pupil for any telescope and eyepiece combination.
Telescope Finder Quiz
Answer a few questions about your experience, budget, and goals and get personalized telescope recommendations.