TS-Optics 20mm Extension with M48 - 2" Filter Thread and 2" Diameter
When will I receive it?
Products marked In stock are dispatched promptly — the exact delivery estimate for your address is shown at checkout, before you confirm the order.
For international shipments, delivery times depend on the destination and are always displayed at checkout before payment.
Products marked Available on order require 5–15 business days for processing. Our team will keep you updated promptly if anything changes.
What are the warranty terms?
Shop with confidence: all our products include a 24-month legal warranty for conformity defects, managed directly by our team.
Many brands also offer extended warranty coverage beyond 24 months — contact us to find out the specific terms for the product you're interested in.
Click here for more information.
Can I return a product?
Yes: you have 14 days from delivery to return any product and receive a full refund — see our Refund Policy for full details.
Items must be returned in their original condition and packaging. Return shipping costs are the customer's responsibility.
Not sure which product is right for you? Contact us before buying — we'll help you find the perfect instrument so you won't need to return anything.
Sei un'azienda? Compila il modulo per la fatturazione
Clicca sul pulsante qui sotto per inserire i tuoi dati aziendali:
Vai al moduloM48 Extension Tube 20 mm with 2" Filter Thread
The TS-Optics 20 mm M48 extension tube is designed to precisely extend accessories equipped with a M48x0.75 (2") filter thread. This adapter increases the optical spacing by 20 mm, allowing accurate adjustment of the distance between optical components in a telescope accessory chain.
Double-sided M48 male/female thread
The extension features a double-sided M48x0.75 filter thread, with female threading on one side and male threading on the other. It can be screwed directly into the M48 filter thread of 2" eyepieces or 2" adapters, extending the barrel and improving the fitting accuracy between adapters and accessories.
Important for astrophotography spacing
In astrophotography setups, the correct distance between a corrector and the camera sensor is often critical. Even a few millimetres can influence the final optical performance. The M48 20 mm extension allows precise spacing when working with accessories using M48 or 2" filter thread connections.
Durable metal construction
The adapter is manufactured from metal with black anodized finish, ensuring mechanical strength and helping reduce unwanted internal reflections within the optical path.
Technical specifications
| Material | Metal barrel |
| Color | Black anodized |
| Thread | Double-sided 2" filter thread M48x0.75 (female/male) |
| Optical length | 20 mm |
| Outer diameter | 2" |
| M48 female thread length | 18 mm |