You have a telescope and you know the basics — now it’s time to go deeper. These guides cover optics, mounts, eyepieces, filters, and the techniques that separate casual observers from serious amateur astronomers.
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Are There Drawbacks To Barlow Lens Use On A Telescope?
Barlow lenses double your magnification cheaply, but they have real downsides. Here are the drawbacks to know — image dimming,…
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5 Simple Steps To Align Your Finderscope Accurately
Align your finderscope in 5 simple steps so it points exactly where your telescope aims — a quick daytime setup…
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Understanding What Focal Length Is In Telescopes
What focal length means on a telescope, how it sets magnification and field of view, and how to pair it…
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What Does The “mm” Mean on a Telescope or Eyepiece
What the mm means on a telescope or eyepiece — how millimeters describe aperture and eyepiece focal length, and how…
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Telescope Zoomable Eyepiece; Better or Worse Than Plossl
Are zoom telescope eyepieces better or worse than Plossls? The real trade-offs in image quality, field of view, and convenience,…
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What To Look For When Buying a Used Telescope
What to look for when buying a used telescope — how to check the optics, mount, and coatings, spot costly…
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Telescope Magnification Guide; Where Does It Get Blurry?
A telescope magnification guide — how to calculate power, find the useful maximum, and know where the image gets too…
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Telescope Filters; Which Ones to Use Where and Why
Telescope filters explained — which ones to use where and why, from Moon and planetary filters to light-pollution and color…
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What the “f/ratio” Means in Telescope Lingo
What the f/ratio means in telescope terms — how focal ratio affects brightness, field of view, and whether a scope…
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What a Barlow Lens Means and Does for a Telescope
What a Barlow lens is and does for a telescope — how it multiplies magnification, when to use one, and…
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30 Quick Tips for Improved Telescope Viewing
30 quick tips for better telescope viewing — simple habits for sharper, steadier, more rewarding views, from cooldown and collimation…