Home > Extensions Spacers & Adapters > M48 T-Thread Spacers Extensions & Adapters > M48 2" Spacer Set (4x units 5, 10, 20, 30mm)

M48 2" Spacer Set (4x units 5, 10, 20, 30mm)

£28.00
Incl. VAT 20.00 % ( £4.67 )
Product Code
M48-EXT-4X-SET
Manufacturer
Altair Astro
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The M48 2" OD spacer kit consists of 4x elements which can be stacked together in various combinations:
 
5mm, 10mm, 20mm and 30mm.
 
This system can be used to achieve just about any spacing setup and is an invaluable tool for any digital astro-imager.
 
For example, you can attach an Altair Astro Canon or Nikon DSLR camera adapter directly to the Altair Astro M48 2" Adapter / Spacer system. Simply screw the 30mm spacer directly into your M48 DLSR adapter, and you can use the protruding 2" OD barrel with telescopes accepting the standard 2" pushfit accessory system.
 
Several filter wheels and CCD cameras have M48 threads, plus this is the standard thread used on 2" filters (M48x0.75mm pitch).
 
Altair PlanoStar TM reducers and flatteners also use the M48 thread system.
 
Why M48? The M48 x 0.75 thread is also referred to as "Large Aperture T-Thread" because it's 6mm wider than the smaller 42mm T-Thread. This reduces the chance of "Vignetting" or light "cut-off" at the edges of the image-frame. 
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