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Item #:
103513293
Alstar Diagonal Mirror 90 Degree, Telescope Diagonal 1.25 inches with Fixing Eyepiece Thumbscrew, Telescope Accessories for Refracting Telescope
Item #:
103513293
BDT 3578
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Enjoy comfortable observing with the Alstar mirror star diagonal, designed for a bright image and easy filter access.
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What Stands Out
High-Quality Reflection
The Alstar diagonal mirror ensures superior light transmission, providing crisp and clear images for astronomy enthusiasts using refractor telescopes.
Versatile Compatibility
Designed to accept standard 1.25 inch eyepieces and filters, this diagonal mirror is perfect for customizing your telescope setup according to your observing needs.
Secure Filter Thread
The built-in filter thread allows for easy attachment of any 1.25 inch filters, enhancing viewing options and improving image quality during night sky observations.
Product Details
| Eye Piece Lens Description | Prism |
| Mount | Altazimuth Mount |
| Focus Type | Manual Focus |
| Power Source | Manual Operation Without Any External Power Source |
| Finderscope | Reflex |
| Compatible Devices | Telescope Eyepieces, Filters |
| Coating | Multi-Coated |
| Field Of View | 90 Degrees |
| Zoom Ratio | 700 |
| Additional Features | 90-degree viewing angle for comfortable observation |
| Objective Lens Diameter | 1.25 |
| Item Weight | 3.98 Ounces (112.83 grams) |
| Brand | A ALSTAR |
| Manufacturer | Alstar |
| Manufacturer Part Number | SKU_AM_DM1D90AR |
| Model Number | SKU_AM_DM1D90AR |
| Unit Count | 1.0 Count |
| Telescope Mount Description | Altazimuth Mount |
| Lens Coating Description | Multi-Coated |
Who Should Buy?
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Amateur Astronomers
Perfect for amateur astronomers seeking ease of use and improved viewing angles with refractor telescopes.
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Casual Stargazers
Ideal for casual stargazers who want a simple upgrade to enhance their observational experiences.
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Photography Enthusiasts
Great for astrophotography, allowing the attachment of 1.25 inch filters for better image quality.
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Advanced Users
Not suitable for advanced astronomers requiring specialized optics or high-end equipment for professional observations.
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Wide-Angle Seekers
Users seeking wide-field views may find the 90-degree angle limiting for certain telescopic observations.
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High Budget Shoppers
Those looking for premium products with advanced features may find this diagonal mirror lacking in performance.
Product Description
Alstar Diagonal Mirror 90 Degree, Telescope Diagonal 1.25 inches with Fixing Eyepiece Thumbscrew, Telescope Accessories for Refracting Telescope Eyepiece Lense for Astronomical Visual Observation
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is the purpose of the Alstar 1.25" 90-Degree Diagonal Mirror?
Answer: The Alstar 1.25" 90-Degree Diagonal Mirror is designed to redirect light in telescopes, allowing users to view objects at a more comfortable angle. This feature is particularly beneficial when observing celestial bodies, as it prevents the need for awkward positioning. Using a diagonal mirror enhances your observing experience by providing a more natural line of sight, making stargazing simpler and more enjoyable. -
Question:
Is the Alstar 1.25" Diagonal Mirror compatible with all telescopes?
Answer: The Alstar 1.25" Diagonal Mirror is specifically compatible with telescopes that have a 1.25" eyepiece holder. It's important to check your telescope's specifications before purchasing to ensure compatibility. This diagonal mirror is ideal for both beginner and advanced astronomers, enhancing the usability of many popular telescope brands. -
Question:
What type of glass is used in the Alstar diagonal mirror?
Answer: The Alstar 1.25" 90-Degree Diagonal Mirror features high-quality optical glass, which is specifically chosen for its clarity and precision. This glass minimizes distortion and maximizes light transmission, which is crucial for accurate observations. Clear and precise imaging is essential when viewing distant celestial objects, making this diagonal mirror a reliable option for any astronomy enthusiast. -
Question:
Can the Alstar diagonal mirror be used for astrophotography?
Answer: Yes, the Alstar 1.25" 90-Degree Diagonal Mirror can be used for astrophotography, as it helps maintain the optical path of your telescope. By redirecting light effectively, it allows for easier framing of celestial objects in your camera’s viewfinder. Many astrophotographers appreciate the ergonomic angle the diagonal provides, facilitating shooting sessions without neck strain. -
Question:
How does the 90-degree angle of the mirror benefit users?
Answer: The 90-degree angle of the Alstar Diagonal Mirror provides a more comfortable viewing position, reducing neck strain and allowing for extended observation periods. This is particularly advantageous for users observing at higher altitudes or during extended celestial events. The ergonomic design means that you can enjoy stargazing sessions without discomfort, maximizing your overall experience. -
Question:
What accessories are needed to use the diagonal mirror?
Answer: To use the Alstar 1.25" 90-Degree Diagonal Mirror, you generally need an appropriate telescope that accommodates a 1.25" eyepiece. Additionally, it’s advisable to have compatible eyepieces for optimal magnification and clarity. This mirror can enhance various eyepiece types, making it a versatile addition to your astronomy toolkit. -
Question:
How should I clean the Alstar diagonal mirror?
Answer: To maintain the quality of the Alstar 1.25" 90-Degree Diagonal Mirror, it's recommended to use a soft, lint-free cloth and appropriate lens cleaner. Avoid using harsh chemicals, as they can damage the optical coating. Regular gentle cleaning ensures optimal performance and prevents dust and smudges from affecting your viewing experience, allowing clear observations every time. -
Question:
Is there a difference between a diagonal mirror and a diagonal prism?
Answer: Yes, the main difference lies in their design and optical performance. A diagonal mirror typically provides greater light transmission and minimal distortion, while a diagonal prism may offer a more compact design with slightly different optical characteristics. Choosing between them often depends on personal preference and the specific needs of your observing style. -
Question:
Can I use the Alstar diagonal mirror during daytime observations?
Answer: Absolutely! The Alstar 1.25" 90-Degree Diagonal Mirror is versatile enough for daytime observations. Whether you're observing terrestrial objects or the Moon during the day, the diagonal mirror improves your comfort by providing an angled view. This allows for pleasant viewing experiences, making it suitable for both astronomy enthusiasts and nature watchers alike. -
Question:
Where can I buy the Alstar 1.25" 90-Degree Diagonal Mirror in Bangladesh?
Answer: You can purchase the Alstar 1.25" 90-Degree Diagonal Mirror on Ubuy, which offers a wide selection of astronomy products. Ubuy is a reliable online platform that provides access to various optical components, ensuring you find what you need for your telescope setup.
AALSTAR Diagonals SKU_AM_DM1D90AR Editorial Review
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BDT 3578
Order now and get it around Friday, July 17
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Features & Benefits
- Provides a comfortable 90-degree viewing angle for easy observation.
- Optimized mirror coating ensures bright images at high magnifications.
- Compatible with all 1.25-inch refracting, Maksutov, and Cassegrain telescopes.
- Metal barrel guarantees secure attachment to the focuser without damage.
- Includes a filter thread for easy use with multiple eyepieces.
- Durable design ensures long-lasting performance for your telescope.
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