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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
SVBONY SA404 M48 to M42 Telescope Adapter
SVBONY SA404 M48 Female to M42 Male Telescope Adapter
SVBONY SA404 M48 Female to M42 Male Telescope Adapter
SVBONY SA404 M48 Female to M42 Male Telescope Adapter
SVBONY SA404 M48 Female to M42 Male Telescope Adapter
SVBONY SA404 M48 Female to M42 Male Telescope Adapter
SVBONY SA404 M48 to M42 Telescope Adapter

SVBONY SA404 M48 Female to M42 Male Telescope Adapter

par SVBONY
UGC SV-W9165A
$11.70 - $11.70
$11.70
$11.70 - $11.70
$11.70
Égalisation de prix!
  • Connects M42 (T2) accessories to M48 (2") threaded components
  • Machined from aluminum alloy to a 0.1mm accuracy
  • Adds a precise 31.5mm of height to the optical path
  • Lightweight 70g design minimizes load on the focuser
  • Standard M48x0.75 female and M42 male threads
En rupture temporaire
Alerte de retour en stock
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Admissible à la livraison GRATUITE aux USA pour les commandes de plus de 350$.
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • SVBONY SA404 M48 to M42 Telescope Adapter

    The SVBONY SA404 M48 to M42 Telescope Adapter provides the essential conversion from a female M48x0.75 thread to a male M42 thread, adding a precise height of 31.5mm to your imaging train. Machined from a solid block of aluminum alloy to an accuracy of 0.1mm and weighing only 70g, the SA404 ensures a rigid, flex-free link between your telescope's corrector and your camera's T-ring.

    0.1mm Machining Accuracy for a Stable Imaging Train

    In astrophotography, any tilt or flexure in the optical train can ruin an image by elongating stars. The SA404 is machined to a 0.1mm tolerance to guarantee that your camera sensor remains perfectly parallel to the focal plane. This precision eliminates a common source of image degradation, ensuring round stars across the entire field.

    Constructed from black anodized aluminum alloy, the adapter weighs a mere 70g, adding minimal load to your focuser assembly. Its fixed 31.5mm height is a known value that must be factored into your back focus calculations, providing a solid, non-flexing extension to achieve the correct spacing for your field flattener or reducer.

  • What is the primary use for the SVBONY SA404 adapter?

    The SVBONY SA404 adapter is used to connect accessories with a smaller M42 (T2-thread) to components that use a larger M48 (2-inch filter thread). It is commonly used to attach a DSLR camera with an M42 T-ring or a guide camera to a field flattener, reducer, or off-axis guider that has an M48 output thread.

    How does the 0.1mm accuracy of the SA404 benefit my astrophotography?

    The 0.1mm machining accuracy ensures that the adapter's threads and faces are perfectly square. This prevents tilt in the imaging train, which is critical for achieving sharp, round stars across the entire sensor, especially with fast optical systems or large-format cameras.

    Will the SVBONY SA404 add significant weight to my setup?

    No. The adapter is made from lightweight aluminum alloy and has a net weight of only 70g. This minimal weight ensures it will not strain your telescope's focuser or cause issues with balance.

    I have a field flattener with M48 threads and a DSLR with an M42 T-ring. Will the SA404 connect them?

    Yes, this is a perfect use case for the SVBONY SA404. It will thread directly onto the M48 female threads of your flattener, and your M42 T-ring will then thread onto the SA404's male threads. Just be sure that the adapter's 31.5mm height works with your required back focus distance.

    When imaging the Orion Nebula (M42) with my refractor, why is a secure adapter like the SA404 important?

    Imaging a bright target like the Orion Nebula (M42) often involves many long exposures. A secure, precisely machined adapter like the SVBONY SA404 prevents any microscopic shift or tilt between sub-exposures. This mechanical stability is crucial for stacking sharp, high-resolution final images without introducing artifacts from equipment flexure.

    What are the exact thread specifications for the SVBONY SA404?

    The SVBONY SA404 features a female M48x0.75 thread on the telescope side and a male M42x0.75 thread on the camera/accessory side. This is the standard for 2-inch filters and T-rings, respectively.

  • Material Aluminum Alloy
    Color Black
    Telescope-Side Interface M48x0.75 Female Thread
    Accessory-Side Interface M42 Male Thread / 1.25 inch
    Machining Accuracy 0.1mm
    Optical Path Height 31.5mm
    Outer Diameter 54mm
    Net Weight 70g

    • SA404 M48 to M42 Adapter

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  • This product does not require software, drivers, or a manual for operation.

  • SVBONY 1-Year Warranty