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Collimation & Focusing Tools

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  1. Bob's Knobs for Orion Astrograph 4-Vane Phillips Screw Secondary Knobs # CNsec35
    Bob's Knobs for Orion Astrograph 4-Vane Phillips Screw Secondary Knobs # CNsec35
    Our Price: $22.95
    Out of Stock
    Free US Shipping Over $25
  2. Bob's Knobs for Meade 8" f/10 with 3-Screw Secondary # M8-3
    Bob's Knobs for Meade 8" f/10 with 3-Screw Secondary # M8-3
    Our Price: $18.95
    Out of Stock
    Free US Shipping Over $25
  3. 3D Astro Bahtinov Focus Mask - 44mm ID # BM-S-44
    3D Astro Bahtinov Focus Mask - 44mm ID # BM-S-44
    Our Price: $7.50
    Out of Stock
    Free US Shipping Over $25
  4. Agena Extra M5 Base for Multi Reticle Reflex Finder with Type 0 Bracket
    Agena Extra M5 Base for Multi Reticle Reflex Finder with Type 0 Bracket
    Our Price: $9.95
    In Stock
    Free US Shipping Over $25
  5. William Optics Diffraction Spikes Bahtinov Focusing Mask - For Telescope Tube/Dewshield Diameter from 172-235mm (6.77"-9.25") # BM-DS-GR90
    William Optics Diffraction Spikes Bahtinov Focusing Mask - For Telescope Tube/Dewshield Diam...
    Our Price: $79.00
    In Stock
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  6. HoTech Advanced CT Laser Collimator for 2" Focuser
    HoTech Advanced CT Laser Collimator for 2" Focuser
    Our Price: $499.00
    Out of Stock
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  7. Farpoint Bahtinov Focus Mask for Celestron 11" SCT with Fastar or Hyperstar # FP412H
    Farpoint Tri-Bahtinov Focus and Collimation Mask for Celestron SCT/RASA Telescopes
    From Our Price: $35.00
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  8. Howie Glatter Holographic Attachment for Laser Collimator - Crosshair and Circle Scope Pattern
    Howie Glatter Holographic Attachment for Laser Collimator - Crosshair and Circle Scope Pattern
    Our Price: $55.00
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  9. Discontinued
    3D Astro Bahtinov Focus Mask for William Optics 50mm Guide Scope # BM-59
    3D Astro Bahtinov Focus Mask for William Optics 50mm Guide Scope # BM-59
    Our Price: $9.50
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  10. 3D Astro Bahtinov Focus Mask - 58mm ID # BM-S-58
    3D Astro Bahtinov Focus Mask - 58mm ID # BM-S-58
    Our Price: $9.25
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  11. Farpoint 1.25" Reflective Cheshire Collimator # FP260
    Farpoint 1.25" Reflective Cheshire Collimator # FP260
    Our Price: $39.00
    Out of Stock
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  12. Agena MRRF B0 Finder Bracket and Base (as supplied)
    Agena Type B0 Mounting Bracket and M5 Base for Agena Multi Reticle Reflex Finder
    Our Price: $20.95
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  13. Bob's Knobs for GSO made 8" Ritchey-Chretien Secondary (Astro-Tech, TPO, Apertura, Orion, iOptron)# AT8RC
    Bob's Knobs for GSO made 8" Ritchey-Chretien Secondary (Astro-Tech, TPO, Apertura, Orion, iO...
    Our Price: $27.95
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  14. Howie Glatter 1.25" TuBlug
    Howie Glatter TuBlug - Barlowed Collimation Plug for Newtonian Telescopes - 1.25"
    Our Price: $160.00
    Out of Stock
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  15. Bob's Knobs for Celestron C5 f/10 Secondary with Metric Collimation Screw Threads # C5metBO
    Bob's Knobs for Celestron C5 f/10 Secondary with Metric Collimation Screw Threads # C5metBO
    Our Price: $22.95
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  16. Discontinued
    3D Astro Bahtinov Focus Mask for William Optics 32mm UniGuide Scope # BM-41
    3D Astro Bahtinov Focus Mask for William Optics 32mm UniGuide Scope # BM-41
    Our Price: $7.25
    Out of Stock
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  17. Bob's Knobs for Meade 8" f/10 with 6-Screw Secondary # M8-6
    Bob's Knobs for Meade 8" f/10 with 6-Screw Secondary # M8-6
    Our Price: $18.95
    In Stock
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  18. Farpoint Bahtinov Focus Mask for DSLR Camera Lens w/ 67mm Filter Thread # FP441
    Farpoint Bahtinov Focus Mask (Unmounted) for DSLR Camera Lens w/ 67mm Filter Thread # FP441
    Our Price: $19.25
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  19. Bob's Knobs for Celestron C11 f/10 with Trifid Fastar Secondary Housing and Standard Collimation Screw Threads # C11stdfst
    Bob's Knobs for Celestron C11 f/10 with Trifid Fastar Secondary Housing and Standard Collima...
    Our Price: $22.95
    In Stock
    Free US Shipping Over $25
  20. Farpoint Bahtinov Focus Mask for DSLR Camera Lens w/ 52mm Filter Thread # FP438
    Farpoint Bahtinov Focus Mask (Unmounted) for DSLR Camera Lens w/ 52mm Filter Thread # FP438
    Our Price: $19.25
    In Stock
    Free US Shipping Over $25
  21. Farpoint Bahtinov Focus Mask (Unmounted) for DSLR Camera Lens w/ 72mm Filter Thread # FP442
    Farpoint Bahtinov Focus Mask (Unmounted) for DSLR Camera Lens w/ 72mm Filter Thread # FP442
    Our Price: $19.25
    In Stock
    Free US Shipping Over $25
  22. Howie Glatter 650nm Standard Brightness Red Laser Collimator - 1.25" & 2"
    Howie Glatter 650nm Standard Brightness Red Laser Collimator - 1.25" & 2" (New Version)
    Our Price: $310.00
    Out of Stock
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  23. Howie Glatter 650nm Standard Brightness Red Laser Collimator - 2"
    Howie Glatter 650nm Standard Brightness Red Laser Collimator - 2" (New Version)
    Our Price: $280.00
    Out of Stock
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  24. 3D Astro Bahtinov Focus Mask - 42mm ID # BM-S-42
    3D Astro Bahtinov Focus Mask - 42mm ID # BM-S-42
    Our Price: $7.25
    In Stock
    Free US Shipping Over $25
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