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AstroZap Focusing Cap with Bahtinov Wheel

Item# ASZP037
 
4.5

(2 Ratings)

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$25.00 to $69.00

List Price: $25.00 to $69.00
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Details & Dimensions
Guarantee & Returns
  • Integrated Bahtinov focusing wheel
  • Allows for quick shutter-like operation
  • Turn wheel for open or closed positioning
  • Focusing wheel is easily replaced for off-axis viewing
  • Made of lightweight aluminum; no plugs or tools required

What's Included?

Focusing cap

Description

Astrozap focusing caps with integrated Bahtinov focusing wheel


Unlike a simple Hartman or Bahtinov mask, the Astrozap focusing cap is a multi-purpose tool which allows for quick 'shutter-like' operation.  Just turn the wheel to the open position for focusing, and then turn it again to the closed position to keep the dust out, or to image dark frames with your CCD or DSLR camera.


The focusing wheel can be easily removed and replaced with an off-axis wheel for off-axis viewing, or an off-axis solar filter wheel for solar viewing on larger telescopes.


Simply turn the thumbscrew to the open position, and turn to close.  No plastic plugs required, and no tools needed.  Made from lightweight aluminum and powder-coated texture black.


Shipping Restrictions:
Only ships in contiguous USA.

Dimensions & Specifications

Brand

Astrozap

Telescope Accessories Series

Focusing Caps with Bahtinov Wheel

Options

Model Size: Choose from 13 Model Size options

AstroZap Focusing Cap with Bahtinov Wheel
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The Perfect Accessory

Customer Reviews

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by PowerReviews
AstroZap Focusing Cap with Bahtinov Wheel
 
4.5

(based on 2 reviews)

Ratings Distribution

  • 5 Stars

     

    (1)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

Reviewed by 2 customers

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(1 of 1 customers found this review helpful)

 
4.0

Focusing for imaging made easy

By pcalliance

from Clever, Missouri

About Me Avid Adventurer

Pros

  • Easy To Use

Cons

    Best Uses

    • Astronomy

    Comments about AstroZap Focusing Cap with Bahtinov Wheel:

    The Bahtinov Wheel works as advertised. It eliminates the hardest thing to do for imaging...proper focus which is easily achieved with this mask. I have purchased 3 of these masks, for my 80mm, 10" and 14". The only thing I've noticed that is a slight drawback is that you MUST focus on a very bright star or the diffraction spikes used to achieve perfect focus are somewhat diffuse and difficult to see in "live view" on the computer in the Canon DSLR imaging software as well as Maxim DL. Having said that, choosing a bright star is usually a very easy thing to do so this is not a major concern. They are a bit heavier than the competition's masks, but you get the added benefit of having a scope dust cover as well. Other than this they operate flawlessly.

    (1 of 1 customers found this review helpful)

     
    5.0

    Easy focusing with the AstroZap Bahtinov

    By yoshac

    from Boston, MA

    About Me Avid Adventurer

    Verified Buyer

    Pros

    • Easy To Use

    Cons

      Best Uses

      • Astrophotography

      Comments about AstroZap Focusing Cap with Bahtinov Wheel:

      The AstroZap Bahtinov wheel works well to provide easy focus on astrophoto camera. It creates three distinct lines on the diffraction grating, which can easily be used to adjust focus on the OTA without needing to use a visual eyepiece parafocal to the imager.

      Fits onto the front of the OTA in place of a regular screen/cap and the masks can be rotated out of the apertures so it becomes a normal cap for taking dark frames.

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