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!

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All Optical Accessories

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  1. Optolong L-eXtreme Dual Bandpass Light Pollution Reduction Imaging Filter - 2"
    Optolong L-eXtreme Dual Bandpass Light Pollution Reduction Imaging Filter - 2"
    Our Price: $309.00
    In Stock
    Free US Shipping
  2. Optolong L-eNhance Dual Bandpass Light Pollution Reduction Imaging Filter
    Optolong L-eNhance Dual Bandpass Light Pollution Reduction Imaging Filter - 2"
    Our Price: $229.00
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  3. Optolong L-Pro Deep Sky Filter
    Optolong L-Pro Deep Sky Filter - 2"
    Our Price: $199.00
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  4. GSO 1.25" 90-deg 99% Dielectric Mirror Diagonal with Compression Ring
    GSO 1.25" 90-deg 99% Dielectric Mirror Diagonal with Compression Ring
    Our Price: $72.00
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  5. William Optics All New 0.8x Reducer / Adjustable Field Flattener 6AIII for GT71, GT81, Z81 & Z103 Telescopes - Space Gray # P-FLAT6AIII
    William Optics All New 0.8x Reducer / Adjustable Field Flattener 6AIII for GT71, GT81, Z81 &...
    Our Price: $229.00
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  6. Meade Series 4000 #126 1.25" 2x Short-Focus Barlow Lens # 07273
    Meade Series 4000 #126 1.25" 2x Short-Focus Barlow Lens # 07273
    Our Price: $49.99
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  7. GSO 2" 0.5x Focal Reducer
    GSO 2" 0.5x Focal Reducer
    Our Price: $52.00
    Out of Stock
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  8. GSO 2" Photo-Visual Coma Corrector for Newtonian Telescopes
    GSO 2" Photo-Visual Coma Corrector for Newtonian Telescopes
    Our Price: $120.00
    Out of Stock
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  9. GSO 2" Photo-Visual Coma Corrector for Newtonian Telescopes with 20mm M48-Threaded Spacer
    GSO 2" Photo-Visual Coma Corrector for Newtonian Telescopes with 20mm M48-Threaded Spacer
    Our Price: $140.00
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  10. Celestron 1.25" Moon Filter # 94119-A
    Celestron 1.25" Moon Filter # 94119-A
    Our Price: $12.95
    Out of Stock
    Free US Shipping Over $25
  11. ZWO 2" UV/IR Cut Filter # IRCUT2
    ZWO 2" UV/IR Cut Filter # IRCUT2
    Our Price: $49.00
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  12. GSO 1.25" 2.5x Apochromatic Barlow Lens # BL251
    GSO 1.25" 2.5x Apochromatic Barlow Lens # BL251
    Our Price: $48.00
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  13. Thousand Oaks Optical SolarLite Solar Filter Film (ND 5) - 5" (127mm) Square Piece
    Thousand Oaks Optical SolarLite Solar Filter Film (ND 5) - 5" (127mm) Square Piece
    Our Price: $13.99
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  14. Dew Shield Plus for Telrad Reflex Finder # 2025
    Dew Shield Plus for Telrad Reflex Finder # 2025
    Our Price: $30.00
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  15. Celestron f/6.3 Reducer Corrector Lens # 94175
    Celestron f/6.3 Reducer Corrector Lens # 94175
    Our Price: $189.95
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  16. Tele Vue 1.25" 2.5x Powermate # PMT-2513
    Tele Vue 1.25" 2.5x Powermate # PMT-2513
    Our Price: $229.00
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  17. William Optics 1.25" Binoviewer Package (with 1.25" Wide Angle Eyepieces and 1.6x Barlow)
    William Optics 1.25" Binoviewer Package (with 1.25" Wide Angle Eyepieces and 1.6x Barlow)
    Our Price: $310.00
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  18. Dew Shield for Telrad Reflex Finder # 2020
    Dew Shield for Telrad Reflex Finder # 2020
    Our Price: $18.00
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    Free US Shipping Over $25
  19. On Sale
    Celestron 1.25" Universal T-Adapter with 2x Barlow # 93640
    Celestron 1.25" Universal T-Adapter with 2x Barlow # 93640
    Sale Price: $59.95 Our Price: $67.95
    Out of Stock
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  20. Closeout
    Baader UV-IR-CUT Filter - 1.25" # FUVIR-1 2459207A
    Baader UV-IR-CUT Filter - 1.25" # FUVIR-1 2459207A
    Sale Price: $65.70 Our Price: $73.00
    Out of Stock
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  21. Tele Vue 2" 2x Powermate with 1.25" Adapter # PMT-2200
    Tele Vue 2" 2x Powermate with 1.25" Adapter # PMT-2200
    Our Price: $343.00
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  22. GSO 1.25" Neutral Density / Moon Filter ND96-0.6 25% Transmission
    GSO 1.25" Neutral Density / Moon Filter ND96-0.6 25% Transmission
    Our Price: $11.95
    Out of Stock
    Free US Shipping Over $25
  23. Celestron 9x50mm Right Angle Correct Image Illuminated Finder Scope with Bracket # 93781
    Celestron 9x50mm Right Angle Correct Image Illuminated Finder Scope with Bracket # 93781
    Our Price: $159.95
    Out of Stock
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  24. Telrad Telescope Reflex Finder with Mounting Base and Selectable Red / Green Illumination
    Telrad Telescope Reflex Finder with Mounting Base and Selectable Red / Green Illumination
    Our Price: $64.95
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Adapter Specifications
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  1. Up to 50 degrees 1 item
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  1. Agena Astro 47 items
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  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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