Cassegrain Telescopes


Classical Cassegrain and Dall-Kirkham Cassegrain

(Includes Tube Mounting Rings)

Model PI250C 10" F/15 Classical Cassegrain $5,900
Model PI250DK, 10" F/20 Dall-Kirkham Cassegrain

Model PI320C 12.5" F/15 Classical Cassegrain $9,800
Model PI320DK, 12.5 " F/20 Dall-Kirkham Cassegrain

Model PI370C 14.5" F/15 Classical Cassegrain $12,800
Model PI370DK, 14.5 " F/20 Dall-Kirkham Cassegrain

Model PI400C 16 " F/15 Classical Cassegrain $14,800
Model PI400DK, 16 " F/20 Dall-Kirkham Cassegrain
Optional Accessories
Zero Expansion Carbon Fiber Tube Upgrade Inquire
80mm guidescope with custom machined mounting bracket $395
Zero Expansion Sitall Optics for Cassegrains Inquire
Enhanced Aluminum Coatings - 96% Reflectivity
For 10" model PI250C and PI250DK add $120
For 12.5" model PI320C and PI320DK add $170
For 14.5 " model PI370C and PI370DK add $320
For 16 " model PI400C and PI400DK add $380
Custom Focal Lengths
We can manufacture your Newtonian or Cassegrain telescope with a longer or shorter focal length to specifically suite your exact requirements at a slight additional cost. Please inquire.

All optical tubes are finished in high gloss acrylic urethane paint and are furnished with metal snap-lock dust cover and 2" and 1 1/4" focuser adapters. Diagonals or eyepieces are not included.


All optical components are guaranteed to deliver diffraction limited performance as specified in our catalog. In the highly unlikely event that you feel the optics are not performing as specified, return them to us and we will correct the problem at no charge.


Complete telescopes, tube assemblies, and equatorial mounts require 50% down. Balances are due upon completion. A notice will be sent when item is ready to ship. Payment may be made by PayPal, personal check, bank check, money order, or VISA or Master Card. International orders must be paid in U. S. funds drawn on a U.S. bank or by international money order, or via PayPal.


Aluminum tubing, rotating rings, standard rings are shipped via United Parcel Service. Equatorial mounts ship via UPS - Supply Chain Solutions. Small international orders ship via U.S. Postal Service air parcel post. Large international orders normally ship UPS - Supply Chain Solutions unless other arrangements are requested by the customer.

Product Specifications

We reserve the right to modify our mechanical and optical components at any time in the interest of continuing to offer the highest quality product possible.

View Specifications

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