NEW AND SURPLUS OPTICS

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with total $5.00 shipping charge to continental US!
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LENS SETS FOR EYEPIECES

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EYEPIECE LENS SET: 45MM FL RKE      L3713
Here's the optics you need to build your own eyepieces. We include some basic mounting instructions, or use your own ideas. Here's what you receive: One achromat (33mm diameter) and one dcx lens (36mm diameter), both coated & unused.  
 
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$8.00 each + $5 max shipping to US


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EYEPIECE LENS SET: 16MM FL KELLNER      L3714
Here's the optics you need to build your own eyepieces. We include some basic mounting instructions, or use your own ideas. Here's what you receive: One achromat (17.5mm diameter) and one dcx OR pcx lens (17.5mm diameter), both coated & unused.  
 
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$7.00 each + $5 max shipping to US


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EYEPIECE LENS SET: 32MM FL ERFLE      L3715
Here's the optics you need to build your own eyepieces. We include some basic mounting instructions, or use your own ideas. Here's what you receive: two achromats (both 35mm diameter, one mounted) and one DCX lens (35.5mm diameter). All coated.  
 
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$12.50 each + $5 max shipping to US


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EYEPIECE LENS SETS: 52MM FL RKE      L3721
Here's the optics you need to build your own eyepiece. We include some basic mounting instructions, or use your own ideas. Here's what you get: One achromat and one DCX lens, both 33mm diameter and both are AR coated. This gives you a 52mm focal length RKE design eyepiece.  
 
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$8.00 each + $5 max shipping to US


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1.25in 28MM FL MODIFIED PLOSSL EYEPIECE LENS SET      L3820
Here's the optics you need to build your own eyepieces. We include some basic mounting instructions, or use your own ideas. This four element 28mm modified plossl lens set consists of a 35.5mm dia x 55mm fl coated DCX lens, a 35.5mm dia x 65mm fl DCX uncoated, and a 33mm dia x 360mm fl achromat coated. Make your own eyepiece today!  
 
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$9.75 each + $5 max shipping to US


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EYEPIECE LENS SET COMBO: RKE & KELLNER 25MM FL      L3846
Here's the optics you need to build your own eyepieces. Used one way it is a Kellner. Flip it over and you have a RKE design. We include some basic mounting instructions, or use your own ideas. Here's what you receive: One coated achromat (30mm diameter) and one DCX (30mm diameter), unused.  
 
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$9.50 each + $5 max shipping to US


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EYEPIECE LENS SETS - ERFLE, 35MM FL      L1716
Here's the optics you need to build your own eyepieces. We include some basic mounting instructions, or use your own ideas. Most of the achromats are coated, and some of the DCX (double convex) or PCX (plano convex) are also coated. Here's what you get: ERFLE: Two achromats and one DCX or PCX.  
 
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$9.50 each + $5 max shipping to US


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EYEPIECE LENS SETS - ERFLE, 25MM FL      L2170
Here's the optics you need to build your own eyepieces. We include some basic mounting instructions, or use your own ideas. Most of the achromats are coated, and some of the DCX (double convex) or PCX (plano convex) are also coated. Here's what you get: ERFLE: Two achromats and one DCX or PCX. Makes a great 25mm focal length eyepiece. The lenses have a diameter of 25mm.  
 
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$9.00 each + $5 max shipping to US


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EYEPIECE LENS SETS - RKE, 19MM FL      L2169
Here's the optics you need to build your own eyepieces. We include some basic mounting instructions, or use your own ideas. Most of the achromats are coated, and some of the DCX (double convex) or PCX (plano convex) are also coated. Here's what you get: RKE: One achromat and one DCX or PCX. Makes a 19mm focal length eyepiece.  
 
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$4.50 each + $5 max shipping to US


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EYEPIECE LENS SETS - ERFLE, 18MM FL      L1652
Here's the optics you need to build your own eyepieces. We include some basic mounting instructions, or use your own ideas. Most of the achromats are coated, and some of the DCX (double convex) or PCX (plano convex) are also coated. Here's what you get: ERFLE: Two achromats and one DCX or PCX  
 
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$8.50 each + $5 max shipping to US


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EYEPIECE LENS SETS - RKE, 7MM FL      L1646
Here's the optics you need to build your own eyepieces. We include some basic mounting instructions, or use your own ideas. Most of the achromats are coated, and some of the DCX (double convex) or PCX (plano convex) are also coated. Here's what you get: RKE: One achromat and one DCX or PCX  
 
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$3.50 each + $5 max shipping to US


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EYEPIECE LENS SETS - SUPER PLOSSL, 26MM FL      L1714
Here's the optics you need to build your own eyepieces. We include some basic mounting instructions, or use your own ideas. Most of the achromats are coated, and some of the DCX (double convex) or PCX (plano convex) are also coated. Here's what you get: SUPER PLOSSL: Two achromats and one DCX. The lenses have a diameter of 33mm.  
 
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$6.50 each + $5 max shipping to US


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EYEPIECE LENS SETS - ERFLE, 30MM FL      L1715
Here's the optics you need to build your own eyepieces. We include some basic mounting instructions, or use your own ideas. Most of the achromats are coated, and some of the DCX (double convex) or PCX (plano convex) are also coated. Here's what you get: ERFLE: Two achromats and one DCX or PCX. The lenses have a diameter of 33mm.  
 
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$9.50 each + $5 max shipping to US


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EYEPIECE LENS SET - PLOSSL 19MM      L2075
Here's the optics you need to build your own eyepieces. We include some basic mounting instructions, or use your own ideas. Here's what you get: PLOSSL: Two achromats, one coated and one uncoated. Lens diameter is 14mm. The lenses have a diameter of 14mm.  
 
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$5.50 each + $5 max shipping to US


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EYEPIECE LENS SETS - ERFLE, 35MM FL      L1716
Here's the optics you need to build your own eyepieces. We include some basic mounting instructions, or use your own ideas. Most of the achromats are coated, and some of the DCX (double convex) or PCX (plano convex) are also coated. Here's what you get: ERFLE: Two achromats and one DCX or PCX.  
 
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$9.50 each + $5 max shipping to US


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EYEPIECE LENS SET: 26MM MODIFIED PLOSSL      L3973
All of our lens set designs (and the optics for them) were designed by Paul Rini. These are a great way to build a good quality eyepiece for a little bit of money. With the current addition of our 'Universal Eyepiece' holder, it makes it even easier to make your own eyepiece! We include some basic mounting instructions, or use your own ideas. This four element 26mm modified plossl lens set consists of (2) 35.5mm dia x 55mm fl coated DCX lenses, and a 33mm dia x 360mm fl doublet coated. Great images with this one! If you want to impress your friends you can call it a 'Super Kellner'.  
 
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$8.50 each + $5 max shipping to US


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CHROME PLATED THREADED BARREL FOR 1-1/4inch EYEPIECES      M3243
If you are building your own 1.25inch eyepieces and want a professional barrel this is what you need. Chrome plated, threaded inside but our 1.25inch filters do not fit. Fits 1-1/4inch focusers. It is 1-3/8inch long by 1/16inch thick. This barrel has internal threading all the way through, and also has 9/32 wide of external threading to mount to the interior housing or your eyepiece. Unused.  
 
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$4.50 each + $5 max shipping to US


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ADDITIONAL RING FOR 2in UNIV EYEPCE LENS HOLDER 40MM ID      L3891D
45mm outside diameter, 40mm inside diameter. Thickness is 9.5mm. Unused  
 
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$4.50 each + $5 max shipping to US


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ADDITIONAL RING FOR 2in UNIV EYEPCE LENS HOLDER 28.5MM ID      L3892D
45mm outside diameter, 28.5mm inside diameter. Thickness is 9.5mm. Unused  
 
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$4.50 each + $5 max shipping to US


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ADDITIONAL RING FOR 2in UNIVERSAL EYEPIECE LENS HOLDER      L3902D
45mm outside diameter, 28.5mm inside diameter. Thickness is 9.5mm. FITS LENSES 29MM - 40MM DIAMETER. Unused.  
 
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$4.50 each + $5 max shipping to US


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2inch X 2inch THREADED EYEPIECE BARREL      M3023
If you're building your own 2 inch eyepieces, this black anodized aluminum barrel is exactly what you need. These are brand new and are 2 inch diameter x 2 inch long and threaded all the way through. Accepts your 48mm filters.  
 
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$7.50 each + $5 max shipping to US


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2 inch BARREL INSERT/CONNECTOR/LENS HOLDER RING      M2814D
We have had numerous requests for these and they are finally in. Use these to connect two of our 2 inch barrels together, as a spacer for lenses, or insert your own lens into the ring. These come with a retaining ring that screws 4mm into the top. They fit lenses with a 43mm diameter but there will be 17mm of space to fill (edge thickness of the lens(es) should be close to this unless you have a spacer). 22mm thick, fully threaded on the outside. These screw into all of the 2 inch barrels we offer. New!  
 
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$7.00 each + $5 max shipping to US


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UNIVERSAL 2 inch EYEPIECE LENS HOLDER      L3890D
Making your own 2 inch eyepiece just got a lot easier! These screw in on top of all of our 2 inch threaded barrels. 45mm diameter bore (opening) fully threaded. Comes with two threaded rings to hold your lenses in securely (others also available separately). One is 40mm opening and is 36mm long (will fit 37-39.5mm lenses) and the other has a 28.5mm opening and is 25mm long (will fit lenses 25mm to 28mm diameter). Some of our already mounted achromats (L3719 for example) fit inside the universal eyepiece lens holder well and can be tightened with a M2814D (Inside the 2 inch barrel). Each universal adapter is new and comes with a 2inch x 1-3/4inch long threaded barrel attached.  
 
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$21.00 each + $5 max shipping to US


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ADDITIONAL RING FOR 2in UNIV EYEPCE LENS HOLDER 40MM ID      M3891D
45mm outside diameter, 40mm inside diameter. Thickness is 9.5mm. Unused  
 
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$4.50 each + $5 max shipping to US


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2in X 1-3/4in BLACK ANODIZED ALUMINUM THREADED BARREL      M2733D
If you're building your own 2in eyepieces, this black anodized aluminum barrel is exactly what you need. These are brand new and are 2in diameter x 1-3/4in long and threaded all the way through. Accepts your standard 48mm filters.  
 
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$7.00 each + $5 max shipping to US

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