55mm Long Stellarvue 88.5 mm Extension Tube (STE-M88.5-05)

Name: 55mm Long Stellarvue 88.5 mm Extension Tube (STE-M88.5-05)
Brand: Stellarvue
SKU: STE-M88.5-055
Price: 42.78 USD
Availability: InStock
Rating: 4.8 (5 reviews)

55mm Long Stellarvue 88.5 mm Extension Tube (STE-M88.5-05) - Main image

55mm Long Stellarvue 88.5 mm Extension Tube (STE-M88.5-05) - View 2

$42.78 ~~$69~~ In stock

Category: Astrophotography Accessories

Description

This is an 88.5 mm extension tube that adds 55 mm of length. It is for use with telescopes using Stellarvue 2.5" focusers. The STE-M88.5-055 threads in front of the focuser to provide more extension for imaging.

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Scarlett ★★★★★ Oct 21, 2026

Machined so precisely that it screws on without the slightest wobble—turned my imaging train into a rock-solid assembly. The 55mm of extra reach was exactly what I needed to hit focus with my reducer, and the threads are buttery smooth.

George ★★★★★ Oct 20, 2026

The threads mate perfectly with my 2.5" focuser, and the extra 55mm gave my camera just enough back focus to nail the stars across the entire frame. Machining is buttery smooth with zero play when tightened down. Worth every penny for anyone fighting spacing issues.

Ellie ★★★★★ Oct 19, 2026

I was worried about adding length to my imaging train, but this tube threaded on perfectly with no wobble. The 55 mm extension gave me just the right back focus for my astro camera.