Blue Fireball Eyepiece Holder / Visual Back (1.25") with M48x0.75 Female Thread # E-14

Our Price: $29.95
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In Stock (10+ Available)
Ships by Next Business Day
Our Product ID: PAAR-BF-E-14
Manufacturer SKU: E-14
Item Can Ship: Worldwide
Blue Fireball Eyepiece Holder / Visual Back (1.25") with M48x0.75 Female Thread # E-14

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Product Details

This 1.25" Visual Back # E-14 by Blue Fireball allows you to attach 1.25" eyepieces and accessories to some telescopes that may have a male M48x0.75 thread (also known as a 2" filter thread). Note that this item is not meant for use with SC telescopes, smaller Mak telescopes that might have a smaller 44.5mm Mak thread, a smaller 1.375" NX4/ETX thread, or with other telescopes or accessories that feature an M42 T/ T2 thread.

This high quality adapter has a male M48 thread on one end and a 1.25" eyepiece barrel on the other end. The eyepiece barrel features a brass compression ring.

Please note that this visual back features two thumbscrews, even though the item is threaded for three screws. Since we cannot predit the orientation of the thumbscrews when this item is fully threaded on to your telescope or accessory, we added the extra hole so that you can pick which two you want to use. The item is not missing the third screw.


  • Total length = 40mm (1.57")
  • Maximum diameter = 52mm (2.05")
  • Length of female M48 thread = 6mm (0.24")
  • Female thread specification = M48x0.75
  • Made of black anodized aluminum.

Blue Fireball part number: E-14