A long focal length folded into a short tube · review
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.
Celestron publishes the range of latitudes where the Advanced VX can be polar-aligned: 7° to 77°. That covers every observing site in the United States, from Key West to the North Slope.
The mount is a computerized German equatorial. Once its axis points at the pole it tracks on one axis and the field does not rotate, which is what long exposures need. The listing adds that it can track across the meridian, and that All-Star Polar Alignment uses any bright star to set it up.
The description lists periodic error correction, improved motor torque and large base castings for stability under heavier loads. PEC records the small repeating errors in the worm gear and plays back a correction, which keeps stars round in long exposures.
The tube is a 6-inch Schmidt-Cassegrain with StarBright XLT coatings, 1500 mm of focal length, f/10. The supplied 20 mm eyepiece gives 75x; a 10 mm would give 150x.
Amazon’s item data gives 32.8 kg (72 lb) for the shipment. This is a telescope set up at home or carried in two or three trips, not a grab-and-go instrument.
On November 7, 2026, Amazon.com listed it at $1,699.00 from a third-party seller.
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 | 1500 mm (59.1 in) · f/10, the quotient of the two published figures |
| Corrector design | Schmidt-Cassegrain · StarBright XLT coatings, 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 separately · Amazon's item data gives 32.8 kg (72 lb) for the complete shipment |
| Mount supplied | Advanced VX computerized German equatorial · periodic error correction (PEC) · usable from 7° to 77° latitude · tracks across the meridian · NexStar+ hand control · All-Star Polar Alignment · 20 mm eyepiece · 6x30 finder |
| Amazon reference | B00HX4SWEC |
| EAN | 0050234207911 |
The worm gear that drives a mount has tiny, repeating imperfections that make tracking speed up and slow down once per turn. PEC records the error and plays back a correction, so stars stay rounder in long exposures.
Once polar-aligned, it tracks on one axis and the field does not rotate, which long exposures need. Celestron's All-Star Polar Alignment helps set it up using any bright star.
The latitudes where the mount's polar axis can be set. That covers everywhere from southern Florida and Hawaii to northern Alaska.
This model is listed on Amazon.com, at ≈ $1,699 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.
Imaging from a fixed site, where the mount matters more than the tube
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.
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