Telescope Simulator
Off-Axis Aberrations: Diagnosing Coma and Astigmatism After Collimation
Off-axis aberrations like coma and astigmatism persist even after perfect collimation. Learn how to diagnose and fix them in Newtonian telescopes with practical tests and real-world solutions.
Lunar Sketching: Techniques for Recording Fine Shadows and Texture
Learn how to sketch the Moon's fine shadows and surface texture using simple tools and observational techniques. No art skills needed-just patience, a pencil, and a dark night.
Beginner Safety: Solar Filters and Nighttime Trip Hazards for New Telescope Users
New telescope users need to know solar filters prevent permanent eye damage and nighttime hazards like tripping can lead to serious injury. This guide covers essential safety tips for beginners.
Double Star Catalogs and References: Finding Complete Lists of Observing Targets
Discover how to use modern double star catalogs like the Washington Double Star Catalog to find the best visual targets for your telescope. Learn which pairs are easiest to observe and how to build your own observing list.
Binoviewer Eyepiece Pairs: Matching Focal Length and Weight for Better Observing
Matching focal length and weight in binoviewer eyepiece pairs ensures sharp, comfortable viewing. Learn how to test, balance, and choose the right pairs for clear, strain-free astronomy.
Balancing Fun and Rigor: How to Sustain a Citizen Science Observing Program
Sustaining a citizen science observing program requires balancing accurate data collection with volunteer engagement. Learn how simple tasks, visible results, and community connection turn casual participants into long-term contributors.
Best High-Altitude Sites for Sub-Arcsecond Double Star Splitting: Where and How to See It
High-altitude sites offer the clearest views for splitting double stars under one arcsecond. Learn where to go, what gear to bring, and how to see details impossible from low elevations.
Stelvision Telescope Simulator: Complete Guide to Features and Functionality
Stelvision Telescope Simulator lets you preview exactly what your telescope will show you under any conditions. It's not a planetarium app-it's a precision tool for beginners and experts alike, simulating real optical performance based on your gear.
Tabletop vs Full-Size Telescopes: Which One Really Fits Your Space and Lifestyle?
Choosing between a tabletop and full-size telescope comes down to space, usage, and how serious you are about seeing deep-sky objects. Tabletop scopes are convenient but limited; full-size scopes deliver power and detail-if you have room for them.
Collimation Myths: Separating Internet Advice from Optical Reality
Collimation myths are everywhere in astronomy. Learn what actually matters for telescope alignment-no lasers, no rituals, just real optics and practical tips to get clear stars without wasting time.
Barlowed Laser Collimation: How to Perfect Your Newtonian Telescope's Primary Mirror Alignment
Barlowed laser collimation is the most accurate way to align a Newtonian telescope's primary mirror. Learn how this simple technique beats standard lasers and delivers sharper views of planets and deep-sky objects.
Choosing Comparison and Check Stars: Criteria and Common Mistakes in Variable Star Observation
Learn how to choose reliable comparison and check stars for observing variable stars, avoid common mistakes, and contribute accurate data to astronomy. Essential guide for amateur observers.