Skip to content
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 T-2 Dustcap - M42x0.75(M)
Baader T-2 Dustcap - M42x0.75(M)
Baader T-2 Dustcap - M42x0.75(M)
Baader T-2 Dustcap - M42x0.75(M)

Baader T-2 Dustcap - M42x0.75(M)

by Baader Planetarium
SKU BAA-2904000
$11.00 - $11.00
$11.00
$11.00 - $11.00
$11.00
Price Match Policy!
  • Fits female T-2 (M42x0.75) threads
  • Male (outer) thread design
  • Protects optics and sensors from dust
  • Prevents damage to delicate threads
Backordered
Request Stock Alert
Availability Info
Qualifies for FREE Shipping in CONUS on orders over $350.
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Baader T-2 Dustcap - M42x0.75(M)

    The Baader T-2 Dustcap is an essential component for protecting any piece of astronomical equipment that features a female M42x0.75 T-thread. This cap threads securely into place, providing a robust seal against dust, moisture, and accidental contact that can damage sensitive optics or threads.

    A Precision Cap for M42x0.75 Female Threads

    Unlike simple push-in plugs that can fall out, this dust cap features a male M42x0.75 thread for a secure, positive fit. It's the correct way to seal the front of a camera nosepiece, the input of a filter wheel, or any T-threaded accessory port when not in use.

    • Secure Seal: Threaded connection ensures the cap stays in place during transport and storage.
    • Damage Prevention: Protects the delicate leading edge of female T-threads from being dented or cross-threaded.
    • Clean Optics: Keeps dust particles from settling on camera sensors, filters, or corrector lenses inside your optical train.

  • What is the Baader T-2 Dustcap used for?

    The Baader T-2 Dustcap is designed to screw into and seal any female T-2 (M42x0.75) threaded port. It is commonly used to protect the openings of T-rings, camera nosepieces, filter wheels, off-axis guiders, and other accessories from dust, moisture, and physical damage when they are not connected in an optical train.

    Will this Baader M42x0.75 dustcap fit my ZWO or QHY camera?

    Yes, if you are referring to the female M42x0.75 T-threads on the camera body or an attached T-ring. This cap is designed to fit the universal T-thread standard used by virtually all astronomy camera manufacturers, including ZWO, QHY, and Celestron.

    Is this a male or female T-2 dustcap?

    This is a male dustcap, indicated by the "(M)" in the product title. It has external M42x0.75 threads designed to screw into a component with female (internal) threads.

    Why do I need a Baader T-2 Dustcap instead of a simple plastic plug?

    A simple plastic plug relies on friction and can easily be knocked out during transport, exposing your equipment. The Baader T-2 Dustcap threads securely into place, guaranteeing it will not fall off and providing a much better seal against environmental contaminants.

    Can I use this M42x0.75 cap on the female port of my Baader FlipMirror II?

    Yes, absolutely. The various ports on the Baader FlipMirror II diagonal utilize the T-2 thread standard. This male dustcap is perfect for sealing any open female M42x0.75 port on the FlipMirror II or other Baader accessories when a camera or eyepiece holder is not attached.

    Does the Baader T-2 Dustcap protect against moisture?

    By creating a secure, threaded seal, the cap significantly helps in preventing ambient moisture and dew from entering the sealed accessory. While not hermetically sealed or waterproof, it provides excellent protection during storage and transport in typical observing environments.

  • Thread T-2 (M42x0.75 Male)
    Function Dust and moisture protection for female T-threads
    Net weight (kg) 0.01
    Outer Diameter 49
    Optical length (mm) 5

    • Baader T-2 Dustcap - M42x0.75(M)

      × 1

  • Baader Planetarium Warranty