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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Spacer Rings / Extenders

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  1. Blue Fireball T Thread Spacer Ring with 30mm Extension # S-T30
    Blue Fireball T Thread Spacer Ring with 30mm Extension # S-T30
    Our Price: $23.95
    In Stock
    Free US Shipping Over $25
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    Blue Fireball SCT Thread Spacer Ring with 0.5" Extension (Short Thread Version) # S-SA
    Blue Fireball SCT Thread Spacer Ring with 0.5" Extension (Short Thread Version) # S-SA
    Sale Price: $9.48 Our Price: $18.95
    Out of Stock
    Free US Shipping Over $25
  3. Baader M68 Fine-Adjustment Aluminum Spacer Ring: 1.0mm Thick # M68RING-10 2458257
    Baader M68 Fine-Adjustment Aluminum Spacer Ring: 1.0mm Thick # M68RING-10 2458257
    Our Price: $11.00
    In Stock
    Free US Shipping Over $25
  4. Blue Fireball M42x0.75 T / T2 Thread Spacer Ring with Variable 9mm - 14mm Extension # S-TV
    Blue Fireball M42x0.75 T / T2 Thread Spacer Ring with Variable 9mm - 14mm Extension # S-TV
    Our Price: $22.95
    In Stock
    Free US Shipping Over $25
  5. Blue Fireball T Thread Spacer Ring with 12mm Extension # S-T12
    Blue Fireball T Thread Spacer Ring with 12mm Extension # S-T12
    Our Price: $19.95
    In Stock
    Free US Shipping Over $25
  6. Blue Fireball M48x0.75 Thread Spacer Ring with 10mm Extension # S-M48-10
    Blue Fireball M48x0.75 Thread Spacer Ring with 10mm Extension # S-M48-10
    Our Price: $18.95
    In Stock
    Free US Shipping Over $25
  7. Closeout
    Blue Fireball SCT Thread Spacer Ring with 1" Extension (Short Thread Version) # S-SB
    Blue Fireball SCT Thread Spacer Ring with 1" Extension (Short Thread Version) # S-SB
    Sale Price: $10.48 Our Price: $20.95
    In Stock
    Free US Shipping Over $25
  8. Blue Fireball M48x0.75 Thread Spacer Ring with 20mm Extension # S-M48-20
    Blue Fireball M48x0.75 Thread Spacer Ring with 20mm Extension # S-M48-20
    Our Price: $21.95
    In Stock
    Free US Shipping Over $25
  9. Celestron M42x0.75 T / T2 Thread Spacer Ring Kit (Set of 3 Rings - 7.5mm/12mm/30mm) # 93618
    Celestron M42x0.75 T / T2 Thread Spacer Ring Kit (Set of 3 Rings - 7.5mm/12mm/30mm) # 93618
    Our Price: $45.95
    In Stock
    Free US Shipping
  10. Closeout
    Blue Fireball SCT Thread Spacer Ring with 1.5" Extension (Short Thread Version) # S-SC
    Blue Fireball SCT Thread Spacer Ring with 1.5" Extension (Short Thread Version) # S-SC
    Sale Price: $11.48 Our Price: $22.95
    In Stock
    Free US Shipping Over $25
  11. Vernonscope Adapter to Attach Brandon Filters to Standard 1.25" Astronomy Eyepieces # 114ADAPTVERN
    Vernonscope Adapter to Attach Brandon Filters to Standard 1.25" Astronomy Eyepieces # 114ADA...
    Our Price: $19.95
    Out of Stock
    Free US Shipping Over $25
  12. Astrodymium Rotating Tilt Adjusters for Select Threads
    Astrodymium Rotating Tilt Adjusters for Select Threads
    From Our Price: $23.09
    More Info
    Free US Shipping Over $25
  13. Blue Fireball Lock Ring / Orientation Control Adapter: For T/T2 Threads (M42x0.75) # L-03
    Blue Fireball Lock Ring / Orientation Control Adapter: For T/T2 Threads (M42x0.75) # L-03
    Our Price: $13.95
    In Stock
    Free US Shipping Over $25
  14. Blue Fireball SCT Thread Spacer Ring with 1" Extension # S-SE
    Blue Fireball SCT Thread Spacer Ring with 1" Extension # S-SE
    Our Price: $21.95
    In Stock
    Free US Shipping Over $25
  15. Blue Fireball SCT Thread Spacer Ring with 0.5" Extension # S-SD
    Blue Fireball SCT Thread Spacer Ring with 0.5" Extension # S-SD
    Our Price: $19.95
    In Stock
    Free US Shipping Over $25
  16. Baader M68 Fine-Adjustment Aluminum Spacer Ring: 0.3mm Thick # M68RING-3 2458255
    Baader M68 Fine-Adjustment Aluminum Spacer Ring: 0.3mm Thick # M68RING-3 2458255
    Our Price: $12.00
    In Stock
    Free US Shipping Over $25
  17. ZWO M42 (T/T2) Male to M48 Female Extender with 12mm Extension # M42M-M48F-12L
    ZWO M42 (T/T2) Male to M48 Female Extender with 12mm Extension # M42M-M48F-12L
    Our Price: $19.00
    Out of Stock
    Free US Shipping Over $25
  18. Baader M68 Fine-Adjustment Aluminum Spacer Ring: 0.5mm Thick # M68RING-5 2458256
    Baader M68 Fine-Adjustment Aluminum Spacer Ring: 0.5mm Thick # M68RING-5 2458256
    Our Price: $12.00
    In Stock
    Free US Shipping Over $25
  19. Baader Planetarium Variable T2 Locking Extension (12-16mm) # T2-33 2958130
    Baader Planetarium Variable T2 Locking Extension (12-16mm) # T2-33 2958130
    Our Price: $54.00
    In Stock
    Free US Shipping
  20. Baader M48 Fine-Adjustment Aluminum Spacer Ring: 0.5mm Thick # M48RING-5 2457917
    Baader M48 Fine-Adjustment Aluminum Spacer Ring: 0.5mm Thick # M48RING-5 2457917
    Our Price: $10.00
    In Stock
    Free US Shipping Over $25
  21. Blue Fireball M48x0.75 Thread Spacer Ring with 5mm Extension # S-M48-05
    Blue Fireball M48x0.75 Thread Spacer Ring with 5mm Extension # S-M48-05
    Our Price: $15.95
    In Stock
    Free US Shipping Over $25
  22. Astrodymium Color Coded Fine Adjustment Spacer Rings: For M42 Threads (Set of 12)
    Astrodymium Color Coded Fine Adjustment Spacer Rings: For M42 Threads (Set of 12)
    Our Price: $19.79
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    Free US Shipping Over $25
  23. Astrodymium Color Coded Fine Adjustment Spacer Rings: For M48 Threads (Set of 12)
    Astrodymium Color Coded Fine Adjustment Spacer Rings: For M48 Threads (Set of 12)
    Our Price: $19.79
    In Stock
    Free US Shipping Over $25
  24. Blue Fireball SCT Thread Spacer Ring with 1.5" Extension # S-SF
    Blue Fireball SCT Thread Spacer Ring with 1.5" Extension # S-SF
    Our Price: $23.95
    In Stock
    Free US Shipping Over $25
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