Parallax also offers Classical Cassegrain and Dall-Kirkham Cassegrain telescopes in 10", 12.5", 14.5", and 16" apertures. The Classical Cassegrain offers a very long focal length in a relatively compact tube. Includes 2" Feather Touch or 2.7" AP Focuser (Specify), 8X50 finder, standard tube rings, tube weight counterbar assembly and slewing handles.
Parallax Instruments PI250DK 10" Dall-Kirkham F/20 Cassegrain Telescope
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. Interferometric test report and fringe analysis data is included with each telescope.
They are excellent instruments for high magnification planetary and double star work. The Dall-Kirkham Cassegrain with its F/20 focal ratio and smaller central obstruction is perhaps the ultimate high magnification visual planetary telescope. Enhanced aluminum coatings for the Parallax Instruments PI250DK 10" Dall-Kirkham F/20 Cassegrain Telescope are available for an additional $120.
Parallax Instruments Product Number: PI250DK
Customer Note: There is an approximate 4- 6 month lead time and orders require a 50% deposit - price does not include shipping charges. Once your order is placed, OPT will contact you with availability dates and shipping charges.
- Additional Information
SKU PA-PI250DK Manufacturer Parallax Telescope Series Parallax Dall-Kirkham Optical Design Dall-Kirkham Mount Type None - Optical Tube Only Warranty Not Supplied By Manufacturer Telescope Aperture 10" Telescope Focal Length 5080mm Telescope Focal Ratio f/20 Optical Coatings Aluminum Tube Color or Finish Gloss White Limiting Stellar Magnitude 14.5 Highest Useful Magnification Not supplied by manufacturer Optical Tube Outer Diameter 304.8mm Optical Tube Weight 40 lbs. Finder Included 8 x 50 Optical Finder Total Telescope Weight N/A
- Included Items
- Parallax Instruments PI250DK 10" Dall-Kirkham F/20 Cassegrain Telescope
- 2" Feather Touch or 2.7" AP Focuser (Specify)
- Slewing Handles
- 8X50 Finder
- Standard Tube Rings
- Tube Weight Counterbar Assembly
- 2/1.25" Focuser Adapter
- Dust Cover
- Questions & Answers
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- Support / Downloads