Save up to $300 on ZWO AM5 and AM3 mount packages while supplies last!Save up to $300 on ZWO AM5 and AM3 mount packages while supplies last!

 ECLIPSE ORDERS: New orders will not ship in time. Local pickup orders can be ordered until 1pm PT Sat, Apr 6 and picked up by 2pm. 

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All Optical Accessories

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  1. Thousand Oaks Optical SolarLite Solar Filter Film (ND 5) - 12" (305mm) Square Piece
    Thousand Oaks Optical SolarLite Solar Filter Film (ND 5) - 12" (305mm) Square Piece
    Our Price: $39.99
    In Stock
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  2. Tele Vue 1.25" 3x Barlow # BLW-3125
    Tele Vue 1.25" 3x Barlow # BLW-3125
    Our Price: $134.00
    In Stock
    Free US Shipping
  3. Agena Multi-Reticle Reflex Finder with B1 Bracket and Cross-Slot Vixen / Synta Style Base
    Agena Multi-Reticle Reflex Finder with B1 Bracket and Cross-Slot Vixen / Synta Style Base
    Our Price: $65.00
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  4. William Optics Red Dot Finder with Quick Release Bracket # M-RDF-P-VB
    William Optics Red Dot Finder with Quick Release Bracket # M-RDF-P-VB
    Our Price: $85.00
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  5. HoTech 2" SCA Field Flattener with T-Thread for f/5 - f/8 Refractor Telescope # FF582
    HoTech 2" SCA Field Flattener with T-Thread for f/5 - f/8 Refractor Telescope # FF582
    Our Price: $175.00
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  6. On Sale
    Celestron 1.25" 3x X-Cel LX Barlow Lens # 93428
    Celestron 1.25" 3x X-Cel LX Barlow Lens # 93428
    Sale Price: $99.95 Our Price: $119.95
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  7. On Sale
    Celestron 1.25" 2x X-Cel LX Barlow Lens # 93529
    Celestron 1.25" 2x X-Cel LX Barlow Lens # 93529
    Sale Price: $99.99 Our Price: $119.95
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  8. GSO 1.25" Neutral Density / Moon Filter ND96-0.9 13% Transmission
    GSO 1.25" Neutral Density / Moon Filter ND96-0.9 13% Transmission
    Our Price: $11.95
    In Stock
    Free US Shipping Over $25
  9. Tele Vue 1.25" 5x Powermate # PMT-5126
    Tele Vue 1.25" 5x Powermate # PMT-5126
    Our Price: $229.00
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  10. Closeout
    Baader UHC-S Nebula Filter - 2" # FUHC-2 2458276
    Baader UHC-S Nebula Filter - 2" # FUHC-2 2458276
    Sale Price: $132.30 Our Price: $147.00
    Out of Stock
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  11. GSO 2" 90-deg 99% Dielectric Mirror Diagonal for Refractors
    GSO 2" 90-deg 99% Dielectric Mirror Diagonal for Refractors
    Our Price: $119.00
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  12. MPCC Mk III (ready to attach to any DSLR or CCD Camera)
    Baader 2" Mark III MPCC Multi Purpose Coma Corrector - Photographic Version # MPCC 2458400
    Our Price: $217.00
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  13. GSO 1.25" 90-deg Erect Image Amici Prism Diagonal # PD90
    GSO 1.25" 90-deg Erect Image Amici Prism Diagonal # PD90
    Our Price: $33.00
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  14. Baader Sky Surfer III Red Dot Finder # SSIII 2957300
    Baader Sky Surfer III Red Dot Finder # SSIII 2957300
    Our Price: $52.00
    Out of Stock
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  15. Celestron Star Pointer Pro Unity (1x) Finder # 51635
    Celestron Star Pointer Pro Unity (1x) Finder # 51635
    Our Price: $67.95
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  16. GSO 1.25" Polarizing Filter
    GSO 1.25" Polarizing Filter
    Our Price: $13.50 As low as $12.50
    Out of Stock
    Free US Shipping Over $25
  17. ZWO Vixen Style Dovetail Saddle / Groove # ZWO-DOVE-AIR
    ZWO Vixen Style Dovetail Saddle / Groove # ZWO-DOVE-AIR
    Our Price: $39.00
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  18. Closeout
    Baader UHC-S Nebula Filter - 1.25" # FUHC-1 2458275
    Baader UHC-S Nebula Filter - 1.25" # FUHC-1 2458275
    Sale Price: $80.10 Our Price: $89.00
    Out of Stock
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  19. Baader AstroSolar Visual Solar Filter Film (ND 5) - Medium Roll 50x100cm (19.7x39.4") # ASOLV-M 2459282
    Baader AstroSolar Visual Solar Filter Film (ND 5) - Medium Roll 50x100cm (19.7x39.4") # ASOL...
    Our Price: $99.00
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  20. Baader 2" Clicklock Mirror Star Diagonal # CLDIAG-2 2956100
    Baader 2" Clicklock Mirror Star Diagonal # CLDIAG-2 2956100
    Our Price: $309.00
    Out of Stock
    Free US Shipping
  21. Optolong UV / IR Cut Filter
    Optolong UV / IR Cut Filter - 2"
    Our Price: $65.00
    In Stock
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  22. Tele Vue 2" 4x Powermate with 1.25" Adapter # PMT-4201
    Tele Vue 2" 4x Powermate with 1.25" Adapter # PMT-4201
    Our Price: $350.00
    In Stock
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  23. BST 2" Variable Transmission Polarizing Filter
    BST 2" Variable Transmission Polarizing Filter
    Our Price: $35.00
    In Stock
    Free US Shipping
  24. Thousand Oaks Optical SolarLite Solar Filter Film (ND 5) - 3" (76mm) Square Piece
    Thousand Oaks Optical SolarLite Solar Filter Film (ND 5) - 3" (76mm) Square Piece
    Our Price: $9.49
    In Stock
    Free US Shipping Over $25
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Adapter Specifications
  1. 2" Nosepiece 4 items
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  1. Up to 50 degrees 1 item
  2. 51 - 60 degrees 3 items
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  1. No Mount (OTA Only) 1 item
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  1. Agena Astro 47 items
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  46. William Optics 22 items
  47. ZWO Astronomy Cameras 33 items
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  1. Askar ACL 1 item
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  1. Up to 300mm 1 item
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  1. Up to f/4 1 item
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  1. 5.1mm - 10mm 2 items
  2. 15.1mm - 20mm 1 item
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  1. In Stock 1011 items
  2. Out of Stock 348 items
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  1. $0.00 - $1,000.00 1256 items
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