StarSense Explorer LT 114AZ Smartphone Telescope vs StarSense Explorer DX 130AZ Smartphone Telescope

Which one to buy

This is a genuine trade rather than an upgrade. The StarSense Explorer DX 130AZ Smartphone Telescope gathers 1.3× the light, but at $3.38/mm it's dearer per millimetre than the StarSense Explorer LT 114AZ Smartphone Telescope at $2.02/mm. Worth it if you're chasing faint objects, where aperture is the only thing that helps. Harder to justify if you mostly observe the Moon and planets, which are bright enough that the smaller scope shows them well.

What you'd notice at the eyepiece

With the 25mm eyepiece most telescopes ship with, the StarSense Explorer LT 114AZ Smartphone Telescope gives 40× and the StarSense Explorer DX 130AZ Smartphone Telescope 26×. The StarSense Explorer LT 114AZ Smartphone Telescope's longer focal length magnifies harder on planets; the StarSense Explorer DX 130AZ Smartphone Telescope shows a wider piece of sky, which is what you want for large nebulae and star clusters, and makes finding things easier. Try other eyepieces →

On the Moon and planets

Planets are bright, so this comes down to resolution and how much magnification the optics will carry before the image falls apart. The StarSense Explorer DX 130AZ Smartphone Telescope resolves to 0.89″ and takes about 260×; the StarSense Explorer LT 114AZ Smartphone Telescope resolves 1.02″ and tops out near 228×. That difference is small enough that seeing conditions will decide more of what you observe than the choice between these two.

On deep-sky objects

Faint objects are where aperture is the only thing that helps. The StarSense Explorer DX 130AZ Smartphone Telescope collects 1.3× the light and reaches about 0.3 magnitudes deeper — more galaxies within reach, and globular clusters that resolve into stars rather than staying a smudge. For imaging the ranking flips: the StarSense Explorer DX 130AZ Smartphone Telescope at f/5.0 records an image 3.1× faster than the StarSense Explorer LT 114AZ Smartphone Telescope at f/8.8, so it needs a fraction of the exposure for the same result. Focal ratio drives exposure time, aperture drives what's visible to the eye — they are different questions and the same telescope rarely wins both.

Who each one suits

Both are reflector telescopes on the same Alt-Az mount, so the decision really is just aperture, price and whatever the brand adds around them. Both suit beginner and visual. The StarSense Explorer LT 114AZ Smartphone Telescope is additionally set up for planetary.

Which to choose

• You mostly observe the Moon and planets. Either. On bright targets the atmosphere limits you long before this much aperture difference does, so take the StarSense Explorer LT 114AZ Smartphone Telescope.
• You're after faint galaxies and nebulae. The StarSense Explorer DX 130AZ Smartphone Telescope, and it isn't close — 1.3× the light is the whole game on faint objects.
• You want to photograph, not look. The StarSense Explorer DX 130AZ Smartphone Telescope at f/5.0 — 3.1× shorter exposures for the same image.
• Budget is the binding constraint. The StarSense Explorer LT 114AZ Smartphone Telescope, $210 less — and it's also the better value per millimetre of aperture.

People also ask

What is the difference between the Celestron StarSense LT and DX?

Aperture and price. The StarSense Explorer DX 130AZ Smartphone Telescope is 130mm against 114mm, so it gathers 1.3× the light, and it costs $210 more.

Is the StarSense Explorer LT 114AZ a good telescope?

On the measurable part — $2.02/mm of aperture — it's the better value of the two. Whether the optics and mount live up to that is something owner reports answer better than a spec sheet.

Is the Celestron StarSense Explorer DX-130AZ good?

On the measurable part — $3.38/mm of aperture — it's the worse value of the two. Whether the optics and mount live up to that is something owner reports answer better than a spec sheet.

Questions Google reports people actually asking about this comparison. Answered from our own specs and live prices — anything the data can't settle isn't listed rather than guessed at.

What this page can't tell you

Everything above comes from aperture, focal length and price — measurable things. It says nothing about how steady the mount is under load, whether the focuser has play, how good the supplied eyepieces are, or what support is like a year in. Those routinely matter more than a few millimetres of aperture, and the only honest source is people who own one.

Worth reading before you buy: owner reports on Cloudy Nights — a twenty-year archive of people describing what these actually do at the eyepiece.