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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.
Baader Planetarium M48 Metal Dustcap with M48i female thread
Baader Planetarium M48 Metal Dustcap with M48i female thread
Baader Planetarium M48 Metal Dustcap with M48i female thread
Baader Planetarium M48 Metal Dustcap with M48i female thread

Baader Planetarium M48 Metal Dustcap with M48i female thread

par Baader Planetarium
UGC BAA-2958600
$39.00 - $39.00
$39.00
$39.00 - $39.00
$39.00
Égalisation de prix!
  • Securely Seals Male M48 Threads
  • Durable All-Metal Construction
  • Internal M48 Female Threading
  • Protects Optics From Dust and Debris
En rupture temporaire
Alerte de retour en stock
Info disponibilité
Admissible à la livraison GRATUITE aux USA pour les commandes de plus de 350$.
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • M48 Metal Dustcap with M48i female thread

    This all-metal dust cap features a female M48 thread to securely seal any male M48 connection in your optical train, protecting sensitive optics from dust and moisture. Unlike push-fit alternatives, the M48 threaded design of this cap prevents it from being accidentally knocked off, ensuring complete protection for correctors, reducers, and camera noses with exposed M48 threads.

    Secure M48 Threaded Protection for Your Optical Train

    Exposed optical components are vulnerable to dust, fingerprints, and moisture. This M48 metal dustcap threads directly onto any male M48 filter thread, providing a robust and positive seal that standard push-in caps cannot match. Its durable metal construction ensures it will not crack or deform over time.

    Use it to cap off your field flattener, reducer, or the front of an off-axis guider when your camera is detached. It's an essential accessory for maintaining a pristine optical path during storage or transport, preventing the need for frequent and risky cleaning sessions.

    M48 Metal Dustcap vs. Plastic Push-Fit Caps: Why Threaded Matters

    While a simple plastic cap is functional, it lacks the security of a threaded connection. This M48 metal cap offers clear advantages for protecting critical and expensive components in your imaging setup.

    • Security: A threaded connection cannot be accidentally bumped or knocked off inside your accessory case. Your optics remain sealed and protected until you intentionally unscrew the cap.
    • Better Seal: The direct thread contact creates a tighter barrier against fine dust particles compared to the loose tolerance of a slip-fit cap.
    • Durability: Constructed from metal, this cap will not crack from repeated use or exposure to cold temperatures, providing a lifetime of reliable protection.

  • I removed my camera from my M48 flattener for storage. Can I use this M48 Metal Dustcap to seal the telescope side?

    Yes, this is the perfect application for this cap. Simply thread the M48 Metal Dustcap onto the exposed male M48 threads of your flattener or reducer to keep the internal optics completely sealed from dust while the camera is not attached.

    Will this M48 Metal Dustcap fit the male threads on my Celestron T-Adapter for my 8" SCT?

    Most standard SCT T-adapters use a smaller M42 (T-thread) connection, not M48. You should verify that your specific T-adapter has M48 threads. This cap is designed for the larger 48mm "wide" T-adapters, field flatteners, and reducers common in astrophotography.

    What is the advantage of a metal M48 dustcap over a plastic one?

    The primary advantages are security and durability. A metal, threaded cap cannot fall off accidentally, and it provides a much better seal against fine dust. It also won't crack or break like plastic caps often do, especially in cold weather.

    Is the thread on this M48 Metal Dustcap male or female?

    This dustcap has female (internal) M48 threads. It is designed to screw onto accessories that have male (external) M48 threads, such as the telescope-side of a field flattener or the nosepiece of some cameras.

    Why do I need an M48 dustcap for my corrector lens?

    A corrector lens, flattener, or reducer is a critical optical component that must be kept perfectly clean for optimal imaging. Using this M48 threaded cap ensures that no dust settles on the glass surfaces during storage, preserving image contrast and preventing artifacts.

    Will this M48 Metal Dustcap prevent moisture from getting in?

    While it is not a hermetically sealed, waterproof cap, the threaded design provides a significantly better seal against ambient humidity and dew than a simple push-fit cap. It greatly reduces the chance of moisture reaching your optics during storage in a humid environment.

  • Thread Type M48 Female (Internal)
    Material Metal

    • M48 Metal Dustcap

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  • Baader Planetarium Warranty