A long focal length folded into a short tube · review
Celestron's NexStar 6SE: a 6-inch Schmidt-Cassegrain on a computerized single-arm GoTo mount with the NexStar+ hand control, a 40,000-object database and SkyAlign.
The Amazon.com listing gives the aperture, 6 inches, the optical type, Schmidt-Cassegrain, and the database, 40,000+ objects. It does not give the focal length or the focal ratio, the two figures that decide which eyepieces give which magnification.
Against the NexStar 4SE, six inches gathers about 2.2 times more light and resolves 50% finer detail. Globular clusters like M13 begin to break into stars, galaxies such as M81 and M82 show their shapes, and Jupiter’s cloud belts gain structure.
The computerized single-arm mount, NexStar+ hand control and SkyAlign alignment are the same as on the 4SE: center any three bright objects and the mount works out the rest.
A built-in wedge. The 6SE’s tripod is not described with one, so long exposures will show field rotation unless a wedge is added.
Celestron lists StarSense AutoAlign, SkyPortal WiFi and SkySync GPS as compatible accessories. Each is a separate purchase.
Not mentioned. A closed Schmidt-Cassegrain tube needs 30 to 60 minutes outside before the image settles, longer on a cold night.
On November 7, 2026, Amazon.com sold it directly at $1,039.00. Celestron states a 2-year warranty.
Figures as Keepa reported them on the day this page was last updated. Stock and pricing shift without warning.
Prices quoted in this text were read on November 7, 2026. The live price is at the top of the page.
Same aisle, closest price — what the same spend else shows.
| Aperture | 6 in (150 mm), stated |
|---|---|
| Folded focal length and ratio | Not published in the Amazon.com listing. |
| Corrector design | Schmidt-Cassegrain, stated |
| Obstruction | Not published by the maker. |
| Back focus | Not published by the maker. |
| Cool-down guidance | Not published by the maker. |
| Tube weight | Not published in the listing text · Amazon's item data gives 9.5 kg (21 lb) |
| Mount supplied | Computerized single-arm GoTo mount · NexStar+ hand control with 40,000+ objects · SkyAlign · compatible with StarSense AutoAlign, SkyPortal WiFi and SkySync GPS accessories |
| Amazon reference | B000GUKTDM |
| EAN | 0050234110686 |
About 2.2 times more light and 50% finer resolution. Globular clusters start to break into stars, the brighter galaxies show shape, and Jupiter's belts show more detail on a steady night.
Short exposures of the Moon and planets, yes. For long exposures an alt-azimuth GoTo mount rotates the field; that needs a separate wedge, which the 6SE does not include.
That the 6SE works with StarSense AutoAlign for automatic alignment, SkyPortal WiFi for phone control and SkySync GPS for location. All three are sold separately.
This model is listed on Amazon.com, at ≈ $1,039 at the last reading. Listed is not the same as in stock: availability changes daily, and the buy box shows the live price.
Details checked on November 7, 2026.
Six inches of aperture on a mount that finds things, for an observer who will look rather than photograph
Listed because the eyepiece or part names this scope.
Amazon reports what buyers took in the month before this page was last checked: at least 50.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Specifications: the manufacturer sheet for telescopes and observing optics and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
100 mm (3.94 in) Maksutov · 1400 mm (55.1 in) focal length · f/14 · EQ3 equatorial mount
A 100/1400 Maksutov-Cassegrain on an EQ3 equatorial mount, supplied with a 25 mm Plössl eyepiece (56x), a 90° star diagonal and a smartphone holder.
Best for: Moon, planets and double stars from a town, on a mount with real slow-motion controls
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102 mm (4 in) Maksutov-Cassegrain · 1325 mm at f/13 · GoTo fork with built-in wedge · 21 lb with tripod
Celestron's NexStar 4SE: a 4-inch Maksutov-Cassegrain with StarBright XLT coatings on a computerized single-arm GoTo mount whose tripod has a built-in wedge, 21 lb with tripod.
Best for: A first computerized telescope for the Moon and planets that can also take short-exposure photos
≈ $649
6-inch (150 mm) Schmidt-Cassegrain · 1500 mm at f/10 · Advanced VX German equatorial with PEC · 7° to 77° latitude
Celestron's Advanced VX 6-inch Schmidt-Cassegrain: a 1500 mm f/10 tube with StarBright XLT coatings on a computerized German equatorial mount with periodic error correction, usable from 7° to 77° latitude.
Best for: Imaging from a fixed site, where the mount matters more than the tube
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