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William Optics M63 Female to 2" Push-in Adapter for P-FLAT6AIII - Used
This used William Optics adapter provides the critical mechanical connection between your P-FLAT6AIII field flattener and any standard 2" telescope focuser. It features a female M63 thread on the flattener side and contributes a precise optical length of 46.6 mm, ensuring you can achieve the correct back focus for a flat field.
Secure Your P-FLAT6AIII with 46.6mm of Spacing
Engineered for a perfect fit, this adapter allows you to integrate the powerful P-FLAT6AIII flattener into an imaging train that terminates in a 2" focuser. The female M63 threads attach directly to the flattener, while the male 2" nosepiece slides securely into your telescope's drawtube. The adapter's body provides a fixed 46.6 mm of optical path length, a key distance for correct spacing.
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Internal Filter Threads: The light-in side of the adapter features standard M48 female threads, allowing you to mount 2" filters inside the optical path, directly in front of the flattener.
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Compatibility Warning: This adapter is not compatible with William Optics "Twenty Years Anniversary Edition" telescopes. Please confirm your telescope model is not an Anniversary Edition before purchasing.
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Used Condition: This is a pre-owned item. It is fully functional but may show minor cosmetic signs of use, such as small marks on the barrel from focuser set screws.
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What is the purpose of the William Optics M63 to 2" adapter for P-FLAT6AIII?
This adapter allows you to connect the William Optics P-FLAT6AIII field flattener, which has an M63 male thread, to a standard 2" telescope focuser. It also provides a specific 46.6 mm of optical length required for proper spacing.
Can I use this adapter with my William Optics GT81 Twenty Years Anniversary Edition telescope?
No. This adapter is explicitly not compatible with any of the "Twenty Years Anniversary Edition" telescopes from William Optics. You will need a different adapter for those specific models.
Does the 46.6 mm optical length of this M63 adapter account for the full back focus?
No, the 46.6 mm is the contribution of this adapter alone. The P-FLAT6AIII has a total back focus requirement (typically 55 mm) that must be achieved by adding this adapter plus any other necessary spacers and camera adapters to reach the sensor plane.
Can I use 2" filters with this William Optics M63 to 2" adapter?
Yes. The adapter is equipped with standard M48 female threads on the telescope side (inside the 2" barrel), allowing you to securely mount any standard 2" astronomy filter.
How do I install this adapter between my William Optics Zenithstar 103 and the P-FLAT6AIII?
First, thread the female M63 end of the adapter onto the male M63 threads of your P-FLAT6AIII flattener until it is snug. Then, slide the 2" male barrel of the adapter assembly into your Zenithstar 103's 2" focuser and lock it in place with the focuser's set screws.
What does "Used" condition mean for this WO-YE-M63F-2IN-PI adapter?
"Used" means the adapter is fully functional but is pre-owned and will likely show cosmetic signs of previous use. This may include minor scratches or scuffs on the black anodizing or marks on the 2" barrel from being inserted into a focuser. The threads will be clean and fully operational.
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| Product Code |
WO-YE-M63F-2IN-PI |
| Condition |
Used |
| Compatibility |
William Optics P-FLAT6AIII Flattener |
| Incompatible With |
William Optics Twenty Years Anniversary Edition Telescopes |
| Light-In Side Connection |
2" Push-in (male) with internal M48 (female) filter threads |
| Light-Out Side Connection |
M63 (female) |
| Optical Length |
46.6 mm |
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William Optics M63 Female to 2" Push-in Adapter
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William Optics 2-Year Warranty
