Reduce focal length 0.8x to give the fast focal ration
Interchangeable male M42 and M48 thread
Fit with Founder Optics FOT86/ FOT106
Universal for f/5~f/7 refractor
Specifications
Coatings:
Fully Multi-Coated
Clear Aperture:
38mm
Mounting:
42mm & 48mm male thread (interchangeable)
A total of 3 guests made comments
Jessica Lee - 2024-03-03
Truly a five-star experience! From the fast shipping to the impeccable quality of the product and the competitive pricing, everything is top-notch. The customer service team is also incredibly supportive and friendly.
Robert Thompson - 2024-03-03
Unmatched quality and service! The delivery was quicker than expected, and the product absolutely shines in terms of quality. The attention to detail is apparent. Customer support is responsive and very helpful.
Henry Allen - 2024-03-03
Super fast delivery and the quality of the product is beyond my expectations. Excellent value and the customer service is really supportive.
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Jessica Lee - 2024-03-03
Truly a five-star experience! From the fast shipping to the impeccable quality of the product and the competitive pricing, everything is top-notch. The customer service team is also incredibly supportive and friendly.