Airy Disk 0.75x Adjustable Reducer / Field Flattener for 106mm APO
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3 element - 0.75x-Flat Field for sharper stars all to way to the edge. Specifically made for the 106mm APO. Screws on to the M63x1-Thread.
0.75x factor - reduces the focal length to 525 mm while giving f/4.95;
55 mm to 60 mm back distance - fine tune in 0.05 mm Increments - from the M48x0.75-thread
Please note: When using the Airy Disk 0.75x FF with their 106mm APO, we recommend using the William Optics CAA63 rotator. The CAA63 is thinner and will enable your camera to come to focus.
The Airy Disk rotator can be used with the Airy Disk 0.92x FF on the 106mm APO without issue.
Other Information
- Country of Manufacture: China
3 element - 0.75x-Flat Field for sharper stars all to way to the edge. Specifically made for the 106mm APO. Screws on to the M63x1-Thread.
0.75x factor - reduces the focal length to 525 mm while giving f/4.95;
55 mm to 60 mm back distance - fine tune in 0.05 mm Increments - from the M48x0.75-thread
Please note: When using the Airy Disk 0.75x FF with their 106mm APO, we recommend using the William Optics CAA63 rotator. The CAA63 is thinner and will enable your camera to come to focus.
The Airy Disk rotator can be used with the Airy Disk 0.92x FF on the 106mm APO without issue.
3 element - 0.75x-Flat Field for sharper stars all to way to the edge. Specifically made for the 106mm APO. Screws on to the M63x1-Thread.
0.75x factor - reduces the focal length to 525 mm while giving f/4.95;
55 mm to 60 mm back distance - fine tune in 0.05 mm Increments - from the M48x0.75-thread
Please note: When using the Airy Disk 0.75x FF with their 106mm APO, we recommend using the William Optics CAA63 rotator. The CAA63 is thinner and will enable your camera to come to focus.
The Airy Disk rotator can be used with the Airy Disk 0.92x FF on the 106mm APO without issue.
Other Information
- Country of Manufacture: China
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Airy Disk 0.75x Adjustable Reducer / Field Flattener for 106mm APO