Shopping Cart

Your cart is empty.

Your cart is empty.

SVBONY SV109 24-35mm M42 Variable Extension Tube T2-Extension Length for Astrophotography

Free shipping on orders over $29.99

$18.89

$ 8 .99 $8.99

In Stock

About this item

  • Fully metal construction and anodizing aluminum process, durable for long time use
  • Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners
  • The extension tube has a T2 interior thread and a T2 exterior thread for solving spacing problems in astrophotography and eliminates a range of focusing problems
  • Astronomical T2 thread Extension Tube;male thread is M42*0.75mm female thread is M42*0.75mm
  • Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners; provides extra focuser back travel which is often needed for short-range terrestrial viewing or astrophotographic applications



Product Description

SV109 24-35mm M42 Variable Extension Tube

extension tube

SV109 provides extra focuser back travel which is often needed for short-range terrestrial viewing or astrophotographic applications. Adjustable design provides you variable length to meet your different needs.

extension tube

Adjustable Length and Multi Use

--unscrewing the part of the extension tube,you can adjust the length of the extension tube ,which is easily to use than extension tube kit.

--The required spacing can be achieved by adjusting the variable extension tube.

--Applied to telescopes for astronomical photography of the mysterious universe. Connect different attachment for different usage.

extension tube

M42x0.75 thread

M42x0.75 male thread and M42x0.75 female thread; eliminates a range of focusing problems

extension tube

T2 thread Extension Tube

Astronomical T2 interior thread and a T2 exterior thread for solving spacing problems in astrophotography

Solid construction

All metal construction and anodizing aluminium process that makes the extension tube be used for long time

Extension Tube

Easy to Use

Easily and convenient to connect telescope and camera for focus photography, threaded design can give you smoothly adjustment.

Extension Tube

Stability

Fits perfect,not cause too much vibration on the telescope body when using a remote shutter, which is critical when trying to take clear images.

Extension Tube

Package Includes

1 x SV109 24-35mm M42 Variable Extension Tube

extension tube
Ligthtweight

ligthtweight and will not be a load for your telescope. Great quality material, compact enough to keep in your telescope accessory bag.

Specification

Type Astronomical T2 thread Extension Tube
Male thread M42*0.75mm
Female thread M42*0.75mm
Color Black
Net Weight 0.917oz / 26g
Variable Extension 24-35mm

James A.
2025-07-22 10:45:46
Well machined and finished, and threads up great with all my other M42 T-thread extension tubing. I'd recommend this to anyone needing fine adjustability for back focuse
Terry Pierce
2025-04-05 16:34:59
This worked perfectly and was easy to quickly dial in the right spacing
Bradford A Ashbrook
2025-03-15 12:06:10
I bought this because of the range, and it is very personal with excellent quality.
Russell K McComb
2025-03-11 16:29:48
It does work and you can get to correct back spacing. I thought the rings might slip but this has not happened.
Poncho
2025-02-09 10:06:52
Using it to connect my Canon T ring to my morpheus telescope lens.
VinceW
2025-01-28 17:14:19
Well made and easy to use
CMiskie
2025-01-27 10:20:26
Works great and solid connection.
Will
2025-01-11 16:15:25
It fit my items as expected. The finish was properly anodized. It was machined well and had no imperfections.
Alexei Beteta
2024-12-17 17:10:34
Hace exactamente lo que se supone que debe hacer, es un espaciador.La mayoría de las reseñas de una estrella para este producto son erróneas, ya sea por error del cliente o por desconocimiento de su uso.Esto hace exactamente lo que dice, es un soporte helicoidal, también necesitarás comprar los espaciadores.y un soporte en T para su cámara que se adapta a su cámara. Vendido por la misma empresa facilita mucho las cosas.1. El espaciador acercará el plano posterior focal, pero 2. el soporte helicoidal lo ajustará perfectamente.[La revisión que dijo que esto no funcionaría porque no es precisa solo habla de 1/3 de la solución, nuevamente ignorancia y falta de comprensión óptica.]2. La rosca y el diámetro también son otro factor a tener en cuenta; nuevamente, las revisiones que decían que estos no se atornillarían en su adaptador no observaron correctamente dos números.a. el diámetrob. el ángulo y la resolución del hilo.Ejemplo para este producto... M42X0,75 mm si su configuración es M42x0,80, ¡no funcionará! Ambos números tienen que coincidir.Entonces, para terminar necesitarás un soporte helicoidal, también necesitarás comprar los espaciadores,y un soporte en T para su cámara que se adapta a su cámara. Vendido por la misma empresa facilita mucho las cosas. Asegúrese de que TODOS los elementos coincidan con el diámetro y el ángulo/resolución de la rosca.Si compras ambas piezas con el soporte en T, se venden, por lo que TODAS las tres piezas juntas FUNCIONARÁN. Si mezclas y combinas, ¡debes comprobar que TODOS los números coincidan y se alineen!
Gottfried Rotter
2024-12-08 16:17:26
Gewinde passen. Lässt sich gut und präzise einstellen und mit dem Konterring sichern.