Gerardo W.

Apr 19, 2025

Svbony SV165 Mini Guide Scope 40mm for Deep Sky

Excelente calidad y precio, buen funcionamiento y tiempos de guiado excelente, recomendable Excelente calidad y precio, buen funcionamiento y tiempos de guiado excelente, recomendable

ImNewHere

Sep 24, 2025

SV161 1.25inch Double Helical Micro Focuser Metal Black for Telescope

Excellent addition to an OAG Excellent addition to an OAG.

Mahendra Mahadeo

Oct 04, 2020

SV161 1.25inch Double Helical Micro Focuser Metal Black for Telescope

Small and sturdy for great priceSmall and sturdy for great price Excellent little focuser for the price. I used it for converting an old 50mm finderscope into a guidescope. I like the threaded drawtube that the asi120mm-s camera can screw into. It is very sturdy. I've only had to focus it once and it stays in place with the lock screw.

David Horton

May 28, 2020

SV161 1.25inch Double Helical Micro Focuser Metal Black for Telescope

High performance at a low cost This aluminum helical focuses has 10 mm of focus range which can be marked off for easier setup after a tear down. It has T threads on the telescope side which are perfect to attaching to my off-axis guider. Very pleased with the performance at nearly half the price.

Rehon

Jun 26, 2025

SV161 1.25inch Double Helical Micro Focuser Metal Black for Telescope

Works, worth the moneyWorks, worth the money It’s a little stiffer than I expected, but it focuses precisely. It came well-packaged, and for $38, it’s definitely worth it; especially considering how much more expensive other options are. It’s well-made and doesn’t feel cheap at all

jason

Jul 24, 2023

SV161 1.25inch Double Helical Micro Focuser Metal Black for Telescope

Good addition to a set up Got a few of these kicking about on a few different set ups they are good quality and easy to use in your optical train for use on many of accessories you may use on your own needs

DI

Aug 04, 2022

SV158 75mm Extension Tube 2 inch

Parfait Très bon achat, la qualité est au rendez vous pour un prix correct. Je recommande sans hésiter.

Howard Shaw

Dec 29, 2020

SV158 75mm Extension Tube 2 inch

Worked as expected, why pay more? The material is relatively soft so be careful not to overtightened the holding screws. However, it fits snugly and works perfectly well on my VCL200 with an Atik383L camera.

Repair Man

Oct 16, 2022

SV158 75mm Extension Tube 2 inch

Did the job-Easy solution to finding focus To achieve focus when switching between 90 deg diagonal for visual observing and straight through for astrophotography I had to remove the diagonal then the eyepiece adapter for the diagonal and screw in a threaded extension tube, finally reattach the eyepiece adapter. Spinning things on and off in the dark sometimes with cold hands other times with sweaty hands risked dropping pricey parts. Now I just loosen thumb screws to remove diagonal and put in this extension tube and retighten thumbscrews. Quick and easy and no wobble so pictures are great.

Karin Sundström

Jul 21, 2023

SV158 75mm Extension Tube 2 inch

Excelente calidad, producto Excelente calidad de producto y super rapida entrega (antes de tiempo)

Kelly Brubacher

Jul 16, 2025

SV158 75mm Extension Tube 2 inch

Good purchase Great quality Nice and secure Won’t mar your expensive eyepiece

Tom

Jan 09, 2026

SV158 75mm Extension Tube 2 inch

Perfect 2” extension tube Works perfect when you remove a star diagonal and use this extension tube in its place. Very little refocusing is needed. It’s well made and the brass ring is great.

Thomas M.

Oct 04, 2025

SV158 75mm Extension Tube 2 inch

Solid and machined well. The accessory I needed, machined very well, has 2-inch threads so I can screw in a filter. I like that it is shorter than both my GSO or Blue Fireball adapters, gives me options when using a Barlow lens. Definitely worth the money to me, it's always in my accessory bag.

R & R

Mar 08, 2025

SV158 75mm Extension Tube 2 inch

More secure then my included extensionMore secure then my included extension This is a bit longer than the included extension with my 8” Skywatcher dob, but it holds my 2” eyepiece sooooo much better. Recommended

Lew

Mar 13, 2025

SV158 75mm Extension Tube 2 inch

works as intended. brass tension band kinked at end not allowing eyepiece to be inserted. removed band. straightened the end. works as intended now. updated!!!!! seller contacted me directly and offered a full refund of purchase which i declined. since product could be fixed and seller was willing to refund im updating my review. i will continue to purchase from them in the future.

ecw

Jul 24, 2025

SV158 75mm Extension Tube 2 inch

Great quality. This extender solved the problem I was having with 2 inch eyepieces on my F6 dob telescope by giving me the extra distance needed to get focused while still keeping the eyepiece fully secured. The compression ring instead screws is a nice feature to avoid scratches on eyepieces. As with all the other SVBONY products I own, this extender gives great quality for the price.

A.T.

Jul 20, 2022

SV158 75mm Extension Tube 2 inch

Solved the problem of back focus This solved the problem of back focus (or out focus) with my TeleVue 27mm Panoptic when used in my Orion XT8 Dobsonian. The one negative is that the screws can easily get lost if you're not careful when loosening them. However, I've learned the secret and it works great. I love that I can screw a nebula filter into it and change eyepiece without having to screw/unscrew a nebula filter every time I want to use a different eyepiece.

A Hwang

Jan 09, 2024

SV158 75mm Extension Tube 2 inch

It works well It does the job at a fraction of the price and you get it quickly. You don't get a fancy box and glossy finish but it doesn't cost a fortune.

ted_barnes

Aug 08, 2025

SV158 75mm Extension Tube 2 inch

USEFUL EXTENSION FOR ASTROPHOTOGRAPHERS Just what one needs to get that long focal length 2" dia camera into focus when mounted on your telescope. So useful I just bought another with a different length extension.

Alireza Teimoury

Aug 22, 2025

SV158 75mm Extension Tube 2 inch

Great quality for the price! Fantastic adaptor. Worked for 82ED SkyWatcher doublet. The same quality as the more expensive ones.