Celestron PowerSeeker 80AZS and 80EQ: Two 80 mm Beginner Refractors Compared

Celestron’s PowerSeeker range is a family of low-cost beginner telescopes. Two members share an 80 mm (3.1 inch) lens but sit on very different mounts: the PowerSeeker 80AZS and the PowerSeeker 80EQ. This page combines two earlier posts, one on each model, into a single guide. Specifications come from Celestron’s own product pages.

What is a refractor?

A refractor uses a lens at the front of the tube to collect light and bring it to a focus at the back, where an eyepiece magnifies the image. Refractors have a sealed tube, need almost no maintenance and are ready to use quickly. That makes them a popular first telescope. An 80 mm lens gathers far more light than the eye. Celestron lists the 80EQ’s light-gathering power as 131 times that of the unaided eye.

What both models include

According to Celestron, both kits come with:

• A 20 mm eyepiece and a 4 mm eyepiece
• A 3x Barlow lens, which triples the magnification of each eyepiece
• A 5×24 optical finderscope
• An erect-image diagonal, so land views appear the right way up
• Access to Celestron’s SkyPortal app and Starry Night Basic Edition software

PowerSeeker 80EQ: verified specifications

From Celestron’s 80EQ product page:

• Optical design: refractor, 80 mm aperture
• Focal length: 900 mm; focal ratio f/11
• Eyepieces: 20 mm (45x) and 4 mm (225x)
• Highest / lowest useful magnification: 189x / 11x
• Limiting stellar magnitude: 12
• Optical tube length: 645 mm; tube weight 4.7 lb
• Mount: manual German equatorial
• Total kit weight: 10.6 lb

PowerSeeker 80AZS: what we can confirm

The 80AZS is the lighter, simpler version. Celestron’s page confirms the 80 mm aperture, the eyepieces, Barlow, finder and diagonal listed above, a manual altazimuth mount and a total kit weight of 5.9 lb.

We have deliberately not quoted a focal length for the 80AZS. Celestron’s current page lists figures (a 400 mm focal length at f/5 together with a 150 mm tube length) that do not agree with each other, so we could not confirm them. Check the label on the tube or the instruction manual if you own one. To find your magnification, divide the focal length by the eyepiece’s focal length.

Altazimuth vs equatorial: the big difference

The 80AZS uses an altazimuth mount. It moves up and down (altitude) and left and right (azimuth), like a camera tripod head. This is intuitive: point it where you want to look. It is quick to set up and good for children and for daytime use.

The 80EQ uses a German equatorial mount. One axis is tilted to point at the celestial pole, close to Polaris in the Northern Hemisphere. Once it is set up, you can follow a star or planet across the sky by turning just one slow-motion control. The trade-off is that it takes some learning, and it uses a counterweight, which adds weight and complexity.

For a first telescope, many beginners find the altazimuth version easier. If you want to learn how the sky moves and are happy to practise, the equatorial version teaches a useful skill.

Realistic magnification

Celestron’s own figure for the 80EQ’s highest useful magnification is 189x. Higher magnifications are possible with the included accessories: the 4 mm eyepiece with the 3x Barlow gives 675x on the 80EQ. But that is far above what the optics can show sharply, so the image will be dim and blurred. Most of the best views come from the 20 mm eyepiece (45x on the 80EQ), with the 4 mm reserved for the Moon and bright planets on very steady nights.

What can you see?

• The Moon: craters, mountains and seas in great detail. This is the best first target.
• Jupiter: its four bright moons and, on good nights, its main cloud belts.
• Saturn: the rings are visible as a separate ring shape at moderate power.
• Bright star clusters: the Pleiades and the Beehive look excellent at low power.
• Daytime views: the erect-image diagonal makes both models handy for landscapes and wildlife.

Beginner tips

• Line up the finder in daylight on a distant object, so the finder and the main tube point at the same place.
• Start with the lowest power, the 20 mm eyepiece, to find objects, then increase magnification.
• Tighten everything gently. Small mounts wobble if knobs are loose, but overtightening can strip threads.
• Never point the telescope at the Sun without a certified solar filter that covers the front of the tube.

Which one should you choose?

• Choose the 80AZS if you want the lightest, simplest set-up for quick looks and daytime use.
• Choose the 80EQ if you want a longer-focal-length scope with an equatorial mount that can follow objects with one control.

Both share the same accessory set and the same 80 mm aperture, so the choice mainly comes down to the mount and how much you want to learn.