EDMUND 33-504 Miniature Angle Mount First Mirror 1/4L

( Brand: Edmund ), ( Part Type: Angle Mount Mirror ), ( Unit Type: Unit ), ( Manufacturer Part Number: 33-504 )

Review EDMUND #33-504 Inch Miniature Angle Mount 1/4l First Surface Mirror

Edmund 33-504 Miniature Angle Mount 1/4-20 First Surface Mirror

The Edmund 33-504 Miniature Angle Mount 1/4-20 First Surface Mirror is a versatile and compact astronomical accessory designed for telescope users seeking to enhance their observing experience. This mirror, manufactured by renowned optical equipment supplier Edmund Scientific, offers excellent reflectivity and precision.

The mirror measures 1.2 inches (30.5 mm) in diameter, making it a perfect fit for short focal length telescopes or as a finder scope mirror. Its 1/4-20 threaded mount allows for easy attachment to various telescope CNC machined brass mounting plates, making it a snap for users to install and align.

This first surface mirror boasts a high-quality, aluminum coated, Pyrex glass substrate. The aluminum coating not only reduces thermal expansion but also eliminates the need for anti-reflection coatings, ensuring a brighter and clearer reflection. The Pyrex glass material is known for its durability and resistance to thermal shock, ensuring the mirror maintains its shape and reflectivity under various observing conditions.

The miniature angle mount is designed to provide maximum flexibility and ease of use. It features a 160-degree adjustable angle range, enabling users to optimally position the mirror for various observing scenarios. The mirror can be tilted up to 80 degrees in both the north and south directions, and up to 80 degrees in the east and west directions, allowing for precise alignment with celestial objects.

Additionally, the mirror comes with a protective cover to prevent dust and debris from accumulating on the surface when not in use. The cover is securely fastened to the mount with a Velcro strap, ensuring a snug fit and easy access when needed.

In summary, the Edmund 33-504 Miniature Angle Mount 1/4-20 First Surface Mirror is a high-quality, compact, and versatile astronomical accessory that offers excellent reflectivity, flexibility, and durability. It is an essential tool for any serious telescope user seeking to maximize their observing experience.

Pros and Cons of buying a Edmund 33-504 Miniature Angle Mount 1/4-20 First Mirror for Telescope Use

The Edmund 33-504 Miniature Angle Mount 1/4-20 First Mirror is a compact and versatile accessory designed for telescope users. This device allows for the attachment of a finder scope or other accessories to the telescope's primary mirror. In this analysis, we will discuss the pros and cons of purchasing this product to help potential buyers make an informed decision.

1. Compact and Lightweight: The 33-504 mount is incredibly small and lightweight, making it a great choice for portable telescope setups or those with limited space.

2. Versatile: This mount can be used with various types of finder scopes and other accessories, allowing users to customize their telescope setup to their preferences.

3. Secure Attachment: The mount provides a stable and secure attachment for the finder scope or accessory, ensuring accurate alignment and optimal performance.

4. Easy to Install: The installation process is straightforward and can be completed in a few simple steps, making it a convenient solution for telescope users.

5. Affordable: Compared to other mirror mounts and telescope accessories, the 33-504 is relatively affordable, making it an accessible option for hobbyists and beginners.

1. Limited Compatibility: The 33-504 mount is designed specifically for Edmund telescopes with 1/4-20 threaded mirrors. Users with different telescope brands or thread sizes may not be able to use this mount.

2. Potential for Vibration: Due to its small size and lightweight construction, the mount may be more susceptible to vibrations and movement, which could impact the accuracy of the telescope's alignment.

3. Limited Adjustability: The mount does not offer extensive adjustability, which may make it less ideal for advanced telescope users or those requiring more precise alignment options.

The Edmund 33-504 Miniature Angle Mount 1/4-20 First Mirror is a valuable accessory for telescope users seeking a compact, versatile, and affordable solution for attaching finder scopes or other accessories to their telescopes. While it may have some limitations in terms of compatibility, compatibility, and adjustability, its benefits far outweigh its drawbacks for many users.

If you own an Edmund telescope with a 1/4-20 threaded mirror and are looking for a convenient, lightweight, and affordable way to attach a finder scope or other accessory, the Edmund 33-504 Miniature Angle Mount 1/4-20 First Mirror is an excellent choice. However, if you require extensive adjustability or are using a telescope with a different thread size, this mount may not be the best option for you. Always ensure compatibility before making a purchase.

Details:

Please, check the manufacturer specs for more details. Comes with 1/4 wave length first surface mirror, protected by original wrapping from the moment it was shipped. Stand also has two bores on 0.75 grid for #6 screws. If you don't like the mirror, it can be removed with a strong solvent, and then see mounting holes below.

The picture with the mirror exposed comes from a separate sample unit, one that ships to you never had its wrapping removed. No other original packaging, only what is shown in the picture. Anodized aluminum 0.1LB, 2 fine thread steel screws 64-pitch, 0.015 /turn, 15deg range, 1.0 square mounting surface with 4 holes on 0.75 grid for 4-40 threaded screws, and one 1/4-20 on base.

part #: 33504 price

• $30.00

specifications detectoimage:

• brand: Edmund
• part type: Angle Mount Mirror
• unit type: Unit
• manufacturer part number: 33-504

payments detectoimage:

• other
• credit card: Mastercard
• wallet: Google-pay

offer detectoimage:

• quantity: 2
• sold: 0
• availability: In Stock
• best offers: True
• options: Ship-to-home
• started: April 3, 2026

seller detectoimage:

• city: East Elmhurst, New York
• rating: 100.0%
• # reviews: 1276

returns detectoimage:

• policy: No Returns

shipping detectoimage:

• cost: $5.62
• service: USPS Ground Advantage
• type: Calculated
• carrier: USPS
• transit: 6-10 Days
• class: Standard

general detectoimage:

• Test, Measurement Inspection > Cameras Imaging > Other Cameras Imaging
• condition: New Open box

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