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Item #:
20483380
Astromania Telescope Focuser, Double Helical Focuser 1.25" for Guide Scope
88% of respondents would recommend this to a friend
Item #:
20483380
GBP 109
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
In stock
Imported from USA store
QTY:
Only 7 items left in stock.
Order now and get it around Thursday, October 01
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Upgrade your telescope setup with the Astromania High Precision Double Helical Focuser for unparalleled accuracy and ease of use.
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What Stands Out
High Precision Focus
The Astromania double helical focuser delivers exceptional precision with a 0.05mm scale, allowing for minute adjustments that enhance clarity and detail in your astronomical observations.
Enhanced Stability
Designed for stability, this focuser ensures smooth operation without wobble, making it ideal for long exposure astrophotography and enhancing the overall usability for both amateurs and professionals.
Versatile Compatibility
Compatible with various telescope lenses, finders, and guidescopes, the Astromania focuser provides flexibility to upgrade your equipment, making it an essential tool for all stargazing enthusiasts.
Product Details
| Eye Piece Lens Description | Helical |
| Mount | Altazimuth Mount |
| Focus Type | Fixed Focus |
| Power Source | Manual Operation |
| Finderscope | Reflex |
| Compatible Devices | Auto Guider, Eyepiece, Telescope |
| Focal Length Description | 9 millimeters |
| Field Of View | 1.7 degrees |
| Additional Features | 0.05mm Precision Scale, 10mm Focuser Stroke |
| Objective Lens Diameter | 5.6 centimeters |
| Item Weight | 3.2 ounces (90.72 grams) |
| Exit Pupil Diameter | 6.22 millimeters |
| Brand | Astromania |
| Model Name | RM |
| Manufacturer | Astromania |
| Model Number | SKU_AM_HDHF1025C |
| Manufacturer Part Number | SKU_AM_HDHF1025C |
| Telescope Mount Description | Altazimuth Mount |
Who Should Buy?
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Astrophotographers
Ideal for capturing precise images as it allows fine adjustments for perfect focus during long exposures.
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Beginner Astronomers
Provides an easy-to-use focusing mechanism, enhancing the experience for new telescope users who require precision.
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Guidescope Users
Perfect for those using a guidescope, enabling accurate focus adjustments necessary for tracking celestial objects.
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Budget-Conscious Buyers
Higher precision features may exceed the budget limitations of those who seek basic focusing equipment.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is the purpose of the Astromania 1.25 High Precision Double Helical Focuser?
Answer: The Astromania 1.25 High Precision Double Helical Focuser is designed to provide precise focusing for telescope lenses, helping users achieve clear and sharp images. Its double helical design allows for fine adjustments, making it ideal for astrophotography, where minute details are crucial. This focuser's 0.05mm scale enables users to easily measure and adjust focusing distances, ensuring optimal performance during stargazing sessions. -
Question:
How does the 0.05mm scale feature enhance focusing accuracy?
Answer: The 0.05mm scale on this focuser allows for extremely fine adjustments, crucial when you're looking to achieve the best possible focus for celestial objects. By facilitating incremental focusing adjustments, users can avoid overshooting, which is often the case with standard focusers. This precision is particularly beneficial when observing faint objects or capturing detailed astrophotographs, ensuring you capture the best detail in your images. -
Question:
Is the Astromania Double Helical Focuser compatible with all telescopes?
Answer: This focuser is designed to fit the common 1.25-inch eyepiece diameter, which is compatible with many telescopes on the market. However, it is essential to check your telescope's specifications to ensure compatibility before purchasing. This product is ideal for both beginner and advanced astronomers looking to upgrade their focusing mechanism for improved observation and photography options. -
Question:
What materials are used in the construction of this focuser?
Answer: The Astromania focuser is constructed from high-quality aluminum, which ensures durability and a lightweight design. The materials used not only support rugged field use but also minimize flexure during focusing, contributing to better image quality. This robust construction guarantees that the unit will withstand the rigors of astronomy while maintaining precise adjustments. -
Question:
Can this focuser be used for astrophotography?
Answer: Yes, the high precision and fine adjustments of the Astromania Double Helical Focuser make it an excellent choice for astrophotography. The ability to achieve exact focus is essential when capturing images of celestial bodies, as even minor adjustments can make a significant difference in image clarity and detail. Photographers often use this focuser to create stunning, crisp images of stars, nebulae, and other astronomical phenomena. -
Question:
How does the double helical design work?
Answer: The double helical design of the Astromania focuser allows for smooth and precise focusing by utilizing two opposing helices. This design minimizes backlash, meaning that adjustments do not result in unpredictable shifts in focus. It provides an ideal focusing solution for astronomers, ensuring adjustments lead to immediate and consistent results across various setups, especially beneficial when focusing on fast-moving celestial objects. -
Question:
What are the benefits of using a helical focuser over rack-and-pinion models?
Answer: Helical focusers, like the Astromania model, offer smoother and finer focusing adjustments compared to traditional rack-and-pinion models. This smooth operation reduces the likelihood of image shift during focusing, resulting in clearer observations. The design also typically requires less space, making it suitable for compact setups. For users prioritizing precision, helical focusers provide the control needed for critical astrophotography and visual astronomy. -
Question:
Can I attach filters to the Astromania focuser?
Answer: Yes, many users attach filters directly to the Astromania Double Helical Focuser. The standard 1.25-inch diameter is compatible with a wide range of telescope filters, enhancing your observational experience. Using filters can help reduce light pollution, enhance contrasts, and bring out details in various celestial objects. This versatility makes the focuser an excellent tool for hobbyists who utilize filters for different astronomical situations. -
Question:
What maintenance is required for the Astromania focuser?
Answer: Regular maintenance for the Astromania focuser involves keeping it clean and ensuring smooth operation. Users should periodically check for dust or debris in the focuser and clean it gently using a microfiber cloth. Additionally, ensuring that the focusing mechanism is well-lubricated will help maintain its precision over time, ensuring optimal performance during all observing sessions. -
Question:
Where can I buy the Astromania 1.25 High Precision Double Helical Focuser?
Answer: You can buy the Astromania 1.25 High Precision Double Helical Focuser with 0.05mm Scale for Telescope Lenses on Ubuy. Ubuy offers convenience and availability for this specialized astronomical accessory, making it easy for you to enhance your telescope setup and enjoy a clearer view of the night sky.
Astromania Photo Adapters SKU_AM_HDHF1025C Editorial Review
Astromania Telescope Focuser, Double Helical Focuser 1.25" for Guide Scope offers precise adjustments, enhancing focusing capabilities for astrophotography. Users have praised its smooth operation, effectively reducing wobble during fine-tuning. The 0.05mm precision scale and 10mm focuser stroke are notable specifications that contribute to its performance in achieving sharp images. However, some reviews highlight compatibility issues with certain setups, indicating the importance of ensuring the proper distance between the camera and the OAG. Despite some minor quality concerns, many consider it a solid addition to their astrophotography tools, especially for manual operations on telescopes.
Customer Reviews & Ratings
43 customers ratings
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5 Star
61%
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4 Star
17%
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3 Star
11%
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2 Star
4%
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1 Star
7%
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Pros
- Precision adjustment for fine-tuning focus
- Smooth operation reduces wobble
- Well-machined for durability
- Compatible with auto guiders and eyepieces
- Lightweight design for easy handling
Cons
- Setup may require specific distance adjustments
Platform Trust & Buyer Confidence
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Jasmin
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“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
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10 September 2026 · via Trustpilot
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10 September 2026 · via Trustpilot
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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
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Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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GBP 109
Order now and get it around Thursday, October 01
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Only 7 items left in stock.
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Features & Benefits
- High precision focusing with 0.05mm scale for superior accuracy.
- Fixed orientation prevents rotation of cameras or eyepieces during adjustments.
- Compatible with various scopes and lenses using M42x0.75 and M31X0.5 threads.
- All-metal construction ensures durability and longevity.
- Easy installation with provided adapters for versatile use.
- Focusing stroke of 10mm allows for precise adjustments.
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