Skip to content
  • Free shipping on orders over $59
    • Free shipping on orders over $59
    Telescope HomeTelescope Home
    • Telescopes
      • Astrographs
      • Catadioptric Telescopes
      • DobsonianTelescopes
      • Reflecting Telescopes
      • Refracting Telescopes
      • Smart Telescopes
      • Solar Telescopes
      • Telescope Bundles
    • Astro Photography
      • Accessories
      • Cameras
      • Mounts
      • WiFi Camera Control
    • Smart Telescopes
    • Used Telescopes
    • Computerized Telescopes
    • Telescope Accessories
      • Accessory Kits & Bundles
      • Cases & Covers & Dobsonian Shrouds
      • Cleaning & Maintenance
      • Collimation Tools
      • Dew & Moisture Protection
      • Equatorial Mounts
      • Field Flatteners
      • Focusers
      • Learning & Gifts & Fun
      • Mounting Hardware
      • Observation Accessories
      • Power & Cables
      • Reducers & Correctors
      • Replacement Parts
      • Solar Filters
      • Telescope Adapters
    • Binoculars & Microscopes
      • Binocular Accessories
      • Compound Microscopes
      • Digital Microscopes
      • Hand Held Microscopes
      • Microscope lmagers
      • Microscope Slides
      • Monoculars
      • Porro Prism Binoculars
      • Roof Prism Binoculars
      • Spotting Scopes
      • Stereo Microscopes
    • Cart / $0.00 0
      • No products in the cart.

        Return to shop

    • 0
      Cart

      No products in the cart.

      Return to shop

    Sale!
    Telescope-Collimation Tools-Apertura 2" Collimation Cap
    Telescope-Collimation Tools-Apertura 2" Collimation Cap - Image 2
    Telescope-Collimation Tools-Apertura 2" Collimation Cap - Image 3
    • Telescope-Collimation Tools-Apertura 2″ Collimation Cap 4
    • Telescope-Collimation Tools-Apertura 2″ Collimation Cap 5
    Home / Telescope Accessories / Collimation Tools

    Telescope-Collimation Tools-Apertura 2″ Collimation Cap

    • Telescope-Collimation Tools-Apertura 2″ Collimation Cap 6
    • Telescope-Collimation Tools-Apertura 2″ Collimation Cap 7

    $17.10 Original price was: $17.10.$11.97Current price is: $11.97.

    75 in stock

    Categories: Collimation Tools, Telescope Accessories Tags: Apertura 2" Collimation Cap, best telescope, best telescope for viewing planets, bushnell telescope, Collimation Tools, euclid telescope, hubble telescope photos, Telescope, telescope for adults, who invented the telescope
    • Telescope-Collimation Tools-Apertura 2″ Collimation Cap 8
    • Telescope-Collimation Tools-Apertura 2″ Collimation Cap 9
    Browse
    • Used Telescopes
    • Computerized Telescopes
    • Telescope Accessories
      • Cleaning & Maintenance
      • Mounting Hardware
      • Telescope Adapters
      • Observation Accessories
      • Learning & Gifts & Fun
      • Field Flatteners
      • Equatorial Mounts
      • Reducers & Correctors
      • Accessory Kits & Bundles
      • Dew & Moisture Protection
      • Replacement Parts
      • Collimation Tools
      • Power & Cables
      • Focusers
      • Solar Filters
      • Cases & Covers & Dobsonian Shrouds
    • Binoculars & Microscopes
      • Roof Prism Binoculars
      • Porro Prism Binoculars
      • Binocular Accessories
      • Spotting Scopes
      • Monoculars
      • Digital Microscopes
      • Hand Held Microscopes
      • Stereo Microscopes
      • Compound Microscopes
      • Microscope Slides
      • Microscope lmagers
    • Telescopes
      • Astrographs
      • Telescope Bundles
      • DobsonianTelescopes
      • Smart Telescopes
      • Solar Telescopes
      • Catadioptric Telescopes
      • Reflecting Telescopes
      • Refracting Telescopes
    • Astro Photography
      • Cameras
      • Mounts
      • WiFi Camera Control
      • Accessories
    • Smart Telescopes
    • Uncategorised
    • Overview

    Functional Simplicity, Premium Construction

    When it comes to aligning your optics, it’s hard to come by a more simple tool than a collimation cap. It would be a mistake to discount these handy tools on this basis however – while this doesn’t have crosshairs or beams of light, the Apertura 2″ Collimation Cap will help collimate your telescope for some stellar views!

    Other collimation caps extend the basic nature of this design to their construction as well, choosing thin plastic and reflective stickers. Apertura understands that just because the design is simple doesn’t mean this should be made to be disposable, which is why the 2″ Collimation Cap is built to maximize performance and built to last. The cap is machined from a solid block of 6061 aluminum, making this cap a premium tool that can help you easily collimate both Newtonian and RC telescopes!

    This cap is designed specifically for 2″ focusers. For those looking for a 1.25″ focuser compatible collimation tool Apertura has created the 1.25″ Collimation Cap.

    Apertura 2 Inch Collimation Cap laid on top of a printout its technical drawing, with a pair of calipers set down next to it.

    Thoughtfully Designed

    The Apertura 2″ Collimation Cap has gone through an extensive design process to provide you with a tool that offers enhance performance and premium quality over the competition, at a great value!

    Apertura 2 Inch Collimation Cap placed upside-down and at an angle so that the gleaming polished ring is pointing directly towards the camera.

    Premium Build, Premium Functionality
    Where other collimation caps settle for stickers, the Apertura 2″ Collimation Cap features a machine polished ring. This gives the cap a bright illuminated surface that makes the collimation process easier. To further improve the ease of use, the center section of this cap is darkened resulting in even more contrast. Couple these features with the Apertura 2″ Collimation Cap’s solid machined aluminum construction, and you have a quality collimation tool!

    The Apertura 2 Inch Collimation Cap inserted into the focuser of an Apertura 6RC Telescope

    Compatible and Comprehensive
    The Apertura 2″ Collimation cap is designed to make collimating Newtonian telescopes a straightforward process. To make the collimation process even easier Apertura has outlined every step needed to collimate a Newtonian in a comprehensive digital manual, walking you through start to finish. This collimation cap has also been verified to work with RC telescopes, making this a perfect multi-use tool for your collection!

    The Apertura logo and name branding sit atop text that reads Absolute Warranty

    Comes with the Apertura Absolute Warranty!
    The Apertura Absolute Warranty provides two years of coverage against product defects. After the initial two-year warranty expires, this product qualifies for Apertura’s Three-Year Accident Replacement Program. In addition, the Apertura Absolute Warranty is transferrable! Download a copy of the Apertura Absolute Warranty for more information on this program, how to make a claim, and why it is important to keep your original receipt and the product’s original boxes & packaging!

    what our customer say this product:

    There are no reviews yet

    Only logged in customers who have purchased this product may leave a review.

    Related products

    Sale!
    Telescope-Solar Filters-AstroZap Visual Baader Solar Filter for 235 mm – 242 mm OD TelescopesTelescope-Solar Filters-AstroZap Visual Baader Solar Filter for 235 mm – 242 mm OD Telescopes 2
    Quick View

    Solar Filters

    Telescope-Solar Filters-AstroZap Visual Baader Solar Filter for 235 mm – 242 mm OD Telescopes

    $119.05 Original price was: $119.05.$65.48Current price is: $65.48.
    Sale!
    Telescope-Solar Filters-AstroZap Visual Baader Solar Filter for 184 mm – 194 mm OD TelescopesTelescope-Solar Filters-AstroZap Visual Baader Solar Filter for 184 mm – 194 mm OD Telescopes 2
    Quick View

    Solar Filters

    Telescope-Solar Filters-AstroZap Visual Baader Solar Filter for 184 mm – 194 mm OD Telescopes

    $97.23 Original price was: $97.23.$53.48Current price is: $53.48.
    Sale!
    Telescope-Solar Filters-Apertura AD10 Solar FilterTelescope-Solar Filters-Apertura AD10 Solar Filter 2
    Quick View

    Solar Filters

    Telescope-Solar Filters-Apertura AD10 Solar Filter

    $74.95 Original price was: $74.95.$44.97Current price is: $44.97.
    Sale!
    Telescope-Solar Filters-AstroZap Baader Solar Filter for 14″ SCT and 395 mm – 405 mm OD Telescopes – Off Axis Filter CellTelescope-Solar Filters-AstroZap Baader Solar Filter for 14″ SCT and 395 mm – 405 mm OD Telescopes – Off Axis Filter Cell 2
    Quick View

    Solar Filters

    Telescope-Solar Filters-AstroZap Baader Solar Filter for 14″ SCT and 395 mm – 405 mm OD Telescopes – Off Axis Filter Cell

    $144.95 Original price was: $144.95.$72.48Current price is: $72.48.
    Sale!
    Telescope-Solar Filters-AstroZap Baader Solar Filter for 7″ Mak / 8″ SCT and 225 mm-235 mm OD TelescopesTelescope-Solar Filters-AstroZap Baader Solar Filter for 7″ Mak / 8″ SCT and 225 mm-235 mm OD Telescopes 2
    Quick View

    Solar Filters

    Telescope-Solar Filters-AstroZap Baader Solar Filter for 7″ Mak / 8″ SCT and 225 mm-235 mm OD Telescopes

    $119.05 Original price was: $119.05.$65.48Current price is: $65.48.
    Sale!
    Telescope-Solar Filters-AstroZap Visual Baader Solar Filter for 323 mm – 333 mm OD TelescopesTelescope-Solar Filters-AstroZap Visual Baader Solar Filter for 323 mm – 333 mm OD Telescopes 2
    Quick View

    Solar Filters

    Telescope-Solar Filters-AstroZap Visual Baader Solar Filter for 323 mm – 333 mm OD Telescopes

    $118.51 Original price was: $118.51.$65.18Current price is: $65.18.
    Sale!
    Telescope-Solar Filters-AstroZap Baader Solar Filter For 11″ SCT and 306 mm – 316 mm OD TelescopesTelescope-Solar Filters-AstroZap Baader Solar Filter For 11″ SCT and 306 mm – 316 mm OD Telescopes 2
    Quick View

    Solar Filters

    Telescope-Solar Filters-AstroZap Baader Solar Filter For 11″ SCT and 306 mm – 316 mm OD Telescopes

    $118.51 Original price was: $118.51.$65.18Current price is: $65.18.
    Sale!
    Telescope-Solar Filters-Apertura AD8 Solar FilterTelescope-Solar Filters-Apertura AD8 Solar Filter 2
    Quick View

    Solar Filters

    Telescope-Solar Filters-Apertura AD8 Solar Filter

    $64.95 Original price was: $64.95.$38.97Current price is: $38.97.
    • About Us
    • Contact us
    • Delivery Policy
    • Refund Policy
    • Privacy Policy
    Copyright 2025 © Telescope Home
    • Telescopes
      • Astrographs
      • Catadioptric Telescopes
      • DobsonianTelescopes
      • Reflecting Telescopes
      • Refracting Telescopes
      • Smart Telescopes
      • Solar Telescopes
      • Telescope Bundles
    • Astro Photography
      • Accessories
      • Cameras
      • Mounts
      • WiFi Camera Control
    • Smart Telescopes
    • Used Telescopes
    • Computerized Telescopes
    • Telescope Accessories
      • Accessory Kits & Bundles
      • Cases & Covers & Dobsonian Shrouds
      • Cleaning & Maintenance
      • Collimation Tools
      • Dew & Moisture Protection
      • Equatorial Mounts
      • Field Flatteners
      • Focusers
      • Learning & Gifts & Fun
      • Mounting Hardware
      • Observation Accessories
      • Power & Cables
      • Reducers & Correctors
      • Replacement Parts
      • Solar Filters
      • Telescope Adapters
    • Binoculars & Microscopes
      • Binocular Accessories
      • Compound Microscopes
      • Digital Microscopes
      • Hand Held Microscopes
      • Microscope lmagers
      • Microscope Slides
      • Monoculars
      • Porro Prism Binoculars
      • Roof Prism Binoculars
      • Spotting Scopes
      • Stereo Microscopes

    Login

    Lost your password?