Skip to content
Stargazing Dec 21st ✦ 6pm-10pm
Stargazing Dec 21st ✦ 6pm-10pm

Airy Disk 0.75x Flat-field Adapter

In Stock
$280.00
SKU AD_75RED
In Stock!

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 525mm while giving f/4.95.  55 mm to 60 mm back distance - fine tune in 0.05 mm Increments - from the M48x0.75-thread.