Blue Fireball Empty 2" Filter Cell with Retaining Ring # S-2F

Our Price: $12.95
  • Buy 3 for $12.00 each and save 8%
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In Stock (10+ Available)
Ships by Next Business Day
Our Product ID: PAAR-BF-S-2F
Manufacturer SKU: S-2F
Item Can Ship: Worldwide
Blue Fireball Empty 2" Filter Cell with Retaining Ring # S-2F

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Product Details

Description/Uses:

  • 2" empty filter cell for astronomy filters
  • Great replacement for old, worn filter cells or those with threading issues
  • Will accept filter substrates between 45mm and 47.2mm in diameter. Please measure your glass filter before purchasing this item to ensure fit.
  • Can also be used as a 2" 7.7mm long spacer ring

Features:

  • Precision machined from aluminum and black anodized
  • Has standard 2" filter threads (male on one side and female on the other)
  • Threads into any standard 2" eyepiece, barlow, diagonal, camera nosepiece, and accessories with compatible female thread
  • Includes retaining ring with two notches 180-degrees apart to hold glass filter substrate within filter cell
  • Made in Taiwan

Specifications:

  • Total length of filter cell = 0.42" (10.7mm)
  • Extension provided = 0.30" (7.7mm)
  • Length of external male thread = 0.12" (3.0mm) including unthreaded undercut; 0.06" (1.5mm) excluding undercut
  • Thread specification (external thread) = M48x0.75 male
  • Length of internal female thread = 0.24" (6.1mm)
  • Thread specification (internal thread) = M48x0.75 female
  • Maximum outside diameter = 1.99" (50.7mm)
  • Retaining ring length = 0.12" (3.0mm)
  • Will accept unmounted filters between 45mm and 47.2mm in diameter and up to 3.1mm thick

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