Jan 4, 2014 · I have some questions about refractor lens making: 1. If you plan to send it in to get MgF2 coated, does that have to happen before the two lenses are cemented together? Can …

Hold one converging lens close to your eye and another one at arm’s length and try to look through both lenses at an object on the far side of the room. Move the far lens back and forth …

Mirrors and lenses are the critical light-bending components of a telescope. Objective: The first lens or curved mirror that collects and focuses the incoming light. Primary lens: The objective …

Sep 20, 2023 · The telescope eyepiece magnifies and refines the image produced by the telescope’s primary lens or mirror, allowing for detailed celestial observation. By adjusting the …

Plössl telescope eyepiece lens design (credit below) The Plössl is so desirable because it offers great standards of colour and eye relief. Like the Orthoscopic, the field of view tends to be …

Sep 20, 2023 · The eyepiece, often called the ocular lens or telescope eye lens, plays a critical role in determining magnification, field of view and overall clarity of celestial observations. The …

When choosing a telescope lens, consider the aperture size, focal length, and quality of lens coatings. The aperture size determines how much light the lens can gather. The focal length …

Jul 30, 2020 · Celestron offers several options for eyepieces that fall within these limits. A 2.3mm X-Cel LX eyepiece will give you 282x, which is close to the highest useful magnification of the …

Jan 25, 2024 · Building a DIY telescope lens isn’t as daunting as it sounds. With a little patience and the right materials, you can create a lens that’ll let you explore the stars from your …

A simple working telescope requires nothing more than a pair of lenses mounted in a tube. The lens in front, known as the objective lens, focuses an image; the lens in back, known as the …