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  3. GRAFLEX 9136

GRAFLEX 9136 Optical Tube Viewfinder Mask

9136 Graflex Optical Tube Viewfinder With Mask #4

( Brand: Graflex ), ( Manufacturer Part Number: 9136 ), ( Type: Viewfinder S ), ( Country Of Origin: United States )

Review GRAFLEX Optical Tube Viewfinder Mask #4

The Graflex 9136 Optical Tube Viewfinder Mask is an essential accessory for astronomers using the Graflex Superior Refractor Telescope or similar telescopes with a focal length of around 15 inches. This viewfinder mask is designed to help improve the viewing experience by reducing the amount of stray light that enters the eyepiece, thus enhancing contrast and making it easier to locate and observe celestial objects.

The mask is made from high-quality, lightweight aluminum, which provides durability and rigidity while keeping the weight to a minimum. It features a precise CNC machined design, ensuring a perfect fit for the Graflex Superior Refractor Telescope. The mask also includes a set of adjustable screws that allow for fine-tuning of the position and alignment with the telescope, ensuring optimal performance.

The Graflex 9136 Optical Tube Viewfinder Mask is designed with a central hole that fits snugly over the telescope's optical tube, while the surrounding rim blocks out unwanted light from entering the eyepiece. The mask also includes a small hole for the finderscope, allowing for easy alignment of the telescope on the desired target.

The mask's surface is anodized for a durable, corrosion-resistant finish, and it is also coated with a thin layer of black paint to reduce reflections and further improve contrast when observing. The mask's edges are rounded and smooth to prevent any potential damage to the telescope or the user.

The Graflex 9136 Optical Tube Viewfinder Mask is an essential accessory for serious astronomers, helping to improve the viewing experience by reducing stray light and enhancing contrast. It is made from high-quality, lightweight aluminum, features a precise CNC machined design, and includes adjustable screws for fine-tuning the position and alignment with the telescope. With its durable, corrosion-resistant finish and smooth, rounded edges, this viewfinder mask is a must-have for any serious astronomer using a Graflex Superior Refractor Telescope or similar telescope.

Graflex 9136 Optical Tube Viewfinder Mask: A Detailed Analysis

The Graflex 9136 Optical Tube Viewfinder Mask is an essential accessory for astronomers using telescopes with eyepieces that have long focal lengths. This mask can help improve the viewing experience by blocking the outer light, making it easier to observe faint objects. In this analysis, we will discuss the pros and cons of buying a Graflex 9136 Optical Tube Viewfinder Mask.

Pros:

1. Enhances Contrast: By blocking the outer light, the mask significantly improves contrast, making it easier to observe faint stars and galaxies.

2. Reduces Eye Strain: The mask helps reduce eye strain by blocking unwanted light, allowing for longer observing sessions without causing fatigue.

3. Increases Comfort: The mask provides a more comfortable observing experience by reducing the need to constantly reposition your eye to avoid the outer light.

4. Versatile: The Graflex 9136 mask is compatible with a wide range of telescopes and eyepieces, making it a versatile accessory for astronomers.

Cons:

1. Cost: The Graflex 9136 mask is relatively expensive compared to other accessories, which may deter some potential buyers.

2. Requires Installation: Installing the mask on your telescope may require some time and effort, and it may not fit perfectly on all telescopes without modification.

3. Limited Field of View: The mask reduces the field of view, which can make locating objects more challenging, especially for those new to astronomy.

In conclusion, the Graflex 9136 Optical Tube Viewfinder Mask is an excellent investment for astronomers who use long focal length eyepieces and want to improve their observing experience. Despite its cost and installation requirements, the benefits of increased contrast, reduced eye strain, and improved comfort make it a worthwhile addition to any astronomy setup. If you are an avid astronomer and are looking to take your observing sessions to the next level, the Graflex 9136 mask is a recommended purchase.

Details:

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part #: 9136 price

  • $54.99

specifications vimopho:

  • brand: Graflex
  • mpn: 9136
  • type: Viewfinder S
  • country of origin: United States

seller vimopho:

  • # reviews: 1762
  • rating: 100.0%
  • city: Summerville, South Carolina

shipping vimopho:

  • transit: 5-12 Days
  • type: Calculated
  • class: Standard
  • carrier: USPS
  • cost: $8.30
  • service: USPS Ground Advantage

offer vimopho:

  • sold: 0
  • quantity: 2
  • started: February 9, 2026
  • options: Ship-to-home
  • availability: In Stock

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  • Cameras Photo > Vintage Movie Photography > Vintage Parts Accessories

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type: viewfinder s, country of origin: united states,
category: camera & photo > cameras photo > vintage movie photography > vintage parts accessories, sku: 2937101666641861,
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