【Important Notice for International Buyers – Tomoayax Japan Rare Authentic Items】
■ Authenticity
All items we sell are 100% authentic.
We carefully source our products from trusted suppliers in Japan.
■ Condition
Many of our items are rare, vintage, or pre-owned.
Such items may show signs of age, storage, or previous use, including minor scratches, wear, or deterioration.
Condition may vary depending on individual expectations.
Please carefully review all photos and descriptions before purchase.
■ Buyer Responsibility
The buyer is fully responsible for understanding the item condition and details before purchase.
We do not accept claims based on subjective expectations (e.g., "not as expected").
■ No Return / No Refund Policy
All sales are final.
We do NOT accept returns or refunds for:
・Minor scratches, aging, or signs of use
・Differences in personal expectations
・Color or appearance differences due to lighting or display
・Any condition clearly shown in photos or described
■ Functionality
Unless otherwise stated, we do not guarantee long-term performance or durability.
Especially for vintage items, future functionality cannot be guaranteed.
■ Liability
We are not responsible for any damage, deterioration, or issues after delivery.
■ Final Notice
Please ensure full understanding of the above before purchasing.
Lens construction: 2 elements (fully multi-coated)
Screw diameter: 28.5mm
Screw pitch: 0.6mm
Frame thickness: 7.5mm
Standard back focus: 37.5mm
- By attaching it to the nosepiece of an astronomical CMOS camera, you can capture a wider area.
*Suitable for use with telescopes with an F-number of 10 or higher.
American-sized filters (screw pitch: 0.6mm) can also be attached.
In addition to photography, it can also be used by attaching it to an eyepiece.
・Manufactured at Sightron Japan's Niigata Tainai Plant.
*This product is designed to be attached to refracting telescopes with an F-number of 10 or higher. Using it with an optical system brighter than F-number 10 will increase spherical aberration.
*Depending on the optical system, it may not be possible to focus at infinity.
*The magnification will change when the back focus of the lens changes. Also, the further away from the standard value (37.5mm), the more likely the performance will decrease.
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