PlaneWave DeltaRho 350 Telescope
Starting Price: $18,500.00
Price as Configured: $18,500.00
Price as Configured: $18,500.00
Brand: PlaneWave Instruments / SKU: PW-140126Q
PlaneWave’s revolutionary Delta Rho 350 f/3 telescope is designed for unsurpassed wide field imaging and ease of use. Since the primary mirror is fixed in place, collimation is quickly achieved by adjusted the tip and tilt of the secondary mirror. With the Delta Rho 350, your astrophotography experience will be second to none.
NOTE: Shipping cost will be determined after the order is made and must be paid for before the telescope will ship. A shipping quote can be obtained on request.

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Optical System
Optical Design | Corrected Dall-Kirkham (CDK) |
Aperture | 350 mm |
Focal Length | 1050 mm (41.34 inch) |
Focal ratio | f/3 |
Central Obstruction | 56 % by diameter |
Back Focus from Mounting Surface | 5.651 inch (143.535 mm) |
Weight | 46 lbs (21 kg) |
OTA Length | 23 inch (584 mm) |
Optical Performance | 4.9 micron RMS on-axis, 6.2 micron RMS at 23 mm off-axis, and 7.6 micron RMS at 30 mm off-axis |
Telescope Cage | Carbon fiber truss poles with carbon fiber shroud |
Optimal Field of View | 60mm image circle |
Secondary Mirror
Diameter | 190 mm (7.48 inch) |
Material | Fused silica (quartz) |
Shape | Spherical |
Coating | Enhanced aluminum – 96% |
Primary Mirror
Optical Diameter | 13.78 inches (350mm) |
Outer Diameter | 14.5 inches (468.3mm) |
Shape | Prolate ellipsoid |
Material | Fused silica (quartz) |
Coating | Enhanced aluminum – 96% |
Lens Group
Diameter | 110 mm (4.33 inch) |
Number of lenses | Three |
Coating | broadband AR Coatings (less than .5% reflected from 400 to 700nm) |
Standard Features
Corrected Cassegrain | The corrected design yields a flat field free from off-axis astigmatism, coma, and field curvature. |
Carbon Fiber Truss Design | Minimizes thermal expansion which causes focus shift with changes in temperature. |
Dovetail Expansion Joint | Allows for the difference in thermal expansion between carbon fiber and aluminum. The expansion joint allows the aluminum dovetail expand and contract without stressing the carbon fiber lower truss |
Cooling Fans | Three cooling fans blow air inside the back of the telescope. This helps the telescope to reach thermal equilibrium quickly. The fans are controlled by a computer if the optional Electronic Focus Accessory (EFA Kit) is purchased. |
Delta-T Ready | For added dew prevention, the DR350 is internally wired with polyimide film heater pads and temperature sensor, ready to be controlled with the optional Delta-T controller. |
Shipping
Crated Shipping Weight | 225 lbs |
Crate Width | 31 inches |
Crate Height | 26 inches |
Crate Length | 53 inches |