Skip to content
Trusted advice since 1979 Excellent 4.5 rating on Google Reviews Free Shipping On Orders Over $100

Bob's Knobs

Filters

$
$
  • 3 Collimating knobs for metric Celestron 9.25" CPC 925 SCTs
    $20.95 - $20.95
    $20.95
    $20.95 - $20.95
    $20.95

    Bob’s Knobs 3 Collimating Knobs for Metric Celestron 9.25" CPC 925 SCTs

    Bob's Knobs
    In Stock

    These knobs make it easy to collimate your Celestron C9¼ CPC 925 for optimum image quality. You don't need any tools, so you never have to worry ab...

    View full details
    $20.95 - $20.95
    $20.95
    $20.95 - $20.95
    $20.95
  • 6 Collimating and locking knobs for Meade 12" Lightbridge Dobsonian primary mirror
    Sold out
    $29.95 - $29.95
    $29.95
    $29.95 - $29.95
    $29.95

    Bob’s Knobs 6 Collimating and Locking Knobs for Meade 12" Lightbridge Dobsonian Primary Mirror

    Bob's Knobs
    Sold Out

    These knobs make it easy to collimate the primary mirror of your Meade 12" LightBridge Dobsonian reflector for optimum image quality. You don't nee...

    View full details
    $29.95 - $29.95
    $29.95
    $29.95 - $29.95
    $29.95
    Sold out
  • 3 Collimating knobs for Celestron 11" SCT with flat secondary housing
    $19.95 - $19.95
    $19.95
    $19.95 - $19.95
    $19.95

    Bob’s Knobs 3 Collimating Knobs for Celestron 11" SCT with Flat Secondary Housing

    Bob's Knobs
    In Stock

    These knobs make it easy to collimate your Celestron C11 for optimum image quality. You don't need any tools, so you never have to worry about losi...

    View full details
    $19.95 - $19.95
    $19.95
    $19.95 - $19.95
    $19.95
  • 3 Collimating knobs for Celestron 11" SCT with Trifid secondary (not Edge HD)
    $19.95 - $19.95
    $19.95
    $19.95 - $19.95
    $19.95

    Bob’s Knobs 3 Collimating Knobs for Celestron 11" SCT with Trifid Secondary (Not Edge HD)

    Bob's Knobs
    More on the way

    These no-tool collimation knobs fit late model aluminum optical tube and most carbon These knobs make it easy to collimate your non-Edge HD Celestr...

    View full details
    $19.95 - $19.95
    $19.95
    $19.95 - $19.95
    $19.95
  • 3 Collimating knobs for Celestron C14 with Phillips-head collimation screws
    Sold out
    $19.95 - $19.95
    $19.95
    $19.95 - $19.95
    $19.95

    Bob’s Knobs 3 Collimating Knobs for Celestron C14 with Phillips-Head Collimation Screws

    Bob's Knobs
    Sold Out

    These knobs make it easy to collimate your Celestron C14 for optimum image quality. You don't need any tools, so you never have to worry about losi...

    View full details
    $19.95 - $19.95
    $19.95
    $19.95 - $19.95
    $19.95
    Sold out
  • 3 Collimating knobs for Celestron C14 w/Allen or slotted collimation screws
    Sold out
    $19.95 - $19.95
    $19.95
    $19.95 - $19.95
    $19.95

    Bob’s Knobs 3 Collimating Knobs for Celestron C14 w/Allen or Slotted Collimation Screws

    Bob's Knobs
    Sold Out

    These knobs make it easy to collimate your Celestron C14 for optimum image quality. You don't need any tools, so you never have to worry about losi...

    View full details
    $19.95 - $19.95
    $19.95
    $19.95 - $19.95
    $19.95
    Sold out
  • 3 Collimating knobs for Astro-Tech 12" RC astrograph secondary mirror
    $25.95 - $25.95
    $25.95
    $25.95 - $25.95
    $25.95

    Bob's Knobs 3 Collimating Knobs For Astro-Tech 12" Rc Astrograph Secondary Mirror

    Bob's Knobs
    In Stock

    These Bob's Knobs fit the secondary mirror housing of the 12" Astro-Tech Ritchey-Chrétiens only. Precise collimation is essential to get the best c...

    View full details
    $25.95 - $25.95
    $25.95
    $25.95 - $25.95
    $25.95
  • 3 Collimating knobs for Astro-Tech 10" RC astrograph secondary mirror
    $25.95 - $25.95
    $25.95
    $25.95 - $25.95
    $25.95

    Bob's Knobs 3 Collimating Knobs For Astro-Tech 10" Rc Astrograph Secondary Mirror

    Bob's Knobs
    In Stock

    These Bob's Knobs fit the secondary mirror housing of the 10" Astro-Tech Ritchey-Chrétiens only. Precise collimation is essential to get the best c...

    View full details
    $25.95 - $25.95
    $25.95
    $25.95 - $25.95
    $25.95
  • 3 Collimating knobs | Meade 16" LX200 with six screw secondary
    $25.95 - $25.95
    $25.95
    $25.95 - $25.95
    $25.95

    Bob’s Knob 3 Collimating Knobs | Meade 16" LX200 with Six Screw Secondary

    Bob's Knobs
    In Stock

    These knobs make it easy to collimate your Meade 16" LX200 Schmidt-Cassegrain or current Meade 16" LX200R Advanced Ritchey-Chrétien telescope for o...

    View full details
    $25.95 - $25.95
    $25.95
    $25.95 - $25.95
    $25.95
  • 3 Collimating knobs for Meade 16" LX200 with three collimating screws
    $25.95 - $25.95
    $25.95
    $25.95 - $25.95
    $25.95

    Bob’s Knobs 3 Collimating Knobs for Meade 16" LX200 With Three Collimating Screws

    Bob's Knobs
    In Stock

    These knobs make it easy to collimate your older three-screw secondary Meade 16" LX200 Schmidt-Cassegrain for optimum image quality. Current 16" Me...

    View full details
    $25.95 - $25.95
    $25.95
    $25.95 - $25.95
    $25.95

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare