DeltaRho 350 f/3 Optical Tube Assembly
$18,500.00
The DeltaRho 350 from PlaneWave Instruments is a pinnacle of innovation designed for avid astronomers and astrophotographers. Created with a passion for excellence, the DeltaRho 350 brings groundbreaking features to advanced imaging, offering unmatched versatility across a spectrum of scientific and communicative applications.
*Price excludes shipping and crating. See our crating and pricing policy for full details.
Key Features Overview
The DeltaRho 350 boasts a suite of top-tier features that set it apart:
- Large 350mm aperture
- Fast f/3 focal ratio
- 1050 mm focal length
- 60mm Image circle (> 3 degrees)
- 143.535 mm back focus from the mounting surface; 64.135 mm with Series-5 focuser and rotator
- Advanced corrected Cassegrain focus optical design
- Robust carbon fiber tube construction
DeltaRho 350’s Key Features
Large Aperture and Fast Focal Ratio
The DeltRho 350 has a 350 mm aperture and an impressively fast f/3 focal ratio. This combination allows significant light-gathering capability and rapid image capture, perfect for detailed SSA/SDA object capture and deep-sky photography.
Advanced Optical Design
Featuring a corrected Cassegrain focus optical system, the DeltaRho 350 ensures top-tier image clarity. Achieve sharp, flat fields across the entire field of view with no curvature, capturing stellar images that require minimal post-processing.
Mechanical Structure
Constructed with a lightweight yet sturdy carbon fiber tube. This Offers enhanced durability and stability while minimizing thermal expansion and maintaining optimal image quality under various environmental conditions.
High-Performance Coatings
Equipped with high-quality mirror coatings that can be customized to meet specific observational requirements. It enhances light transmission and reduces stray light, optimizing the telescope for specialized applications such as SSA/SDA and FSO.
Collimation Software
The DeltaRho 350 is equipped with user-friendly collimation software designed to ensure optimal alignment of optical elements quickly and accurately. This feature is crucial for maintaining the high resolution and sharpness needed for professional-level imaging and research, allowing users to adjust collimation on the fly easily.
Dew Control
Integrated dew control systems in the DeltaRho 350 utilize advanced heater technology to prevent condensation on optical surfaces. This system ensures that dew does not interrupt observations and imaging sessions, providing consistent clarity and performance in various environmental conditions.
Application-Specific Benefits
Astrophotography
The DeltaRho 350’s fast exposures and expansive field view allow astrophotographers to capture breathtaking night sky images with exceptional detail and clarity.
Astronomy Research
With its robust build and advanced optics, the DeltaRho 350 is an excellent tool for universities and research institutions engaged in long-term astronomical studies.
Space Situational Awareness (SSA) and Space Domain Awareness (SDA)
The Delta Rho's fast focal ratio and large image circle allow you to take shorter exposures and use larger Sensors. Making it perfect for surveying larger areas of the sky for quicker monitoring and cataloging of space debris and satellites.
Specifications
DeltaRho 350 f/3 Optical Tube Assembly
| Aperture | 350 mm (13.7") |
| Focal Length | 1050 mm (41.34") |
| Focal Ratio | f/3 |
| Central Obstruction | 56% by diameter |
| Back Focus from Mounting Surface | 142.24 mm (5.6") |
| Weight | 46 lbs (21 kg) |
| OTA Length | 584 mm (23") |
| Optical Design Performance | 4.9-micron RMS on-axis, 5.6-micron RMS at 23 mm off-axis, 6.4-micron RMS at 30 mm off-axis |
| Upper Cage | Carbon fiber truss poles with carbon fiber shroud |
| Image Circle Size | 60 mm |
| Diameter | 110 mm (4.33") |
| Coating | Broadband AR Coatings (less than .5% reflected from 400 to 700 nm) |
| Diameter | 190 mm (7.48") |
| Material | Fused silica (quartz) |
| Shape | Spherical |
| Coating | Enhanced Aluminum - 96% |
| Optical Diameter | 350mm (13.78") |
| Outer Diameter | 4.5 in (14.5") |
| Shape | Prolate Ellipsoid |
| Material | Fused Silica (quartz) |
| Coating | Enhanced Aluminum - 96% |
| Included Items | Heating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately |
| OTA Cover - To protect the primary mirror and inside of the optical tube | |
| Flashdrive - Contains software and instructions for collimation and spacing the primary to secondary mirror | |
| Wrench Set (5812A35) - Standard hex wrenches (European orders only) | |
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|---|---|---|---|---|
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 | Tip-Tilt Adjustment Interfaces | These tip-tilt adapters are designed for securing the 3.5″ Hedrick Focuser and IRF90 and our Series-5 Focusers and Rotators.
| $300.00 – $400.00 | |
 | Piggyback Dovetail Bars |
Please Note- For CDK17 users:
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 | L-350 Equatorial Wedge | Add to the versatility of your L-350 direct drive mount with PlaneWave’s L-350 equatorial Wedge for precise polar alignment and tracking accuracy. Each wedge is made for your specific latitude and has an alignment range of ±3 degrees. Uses oversized fine thread adjustment screws and brass tightening nuts for a fine latitude adjustment. | $2,000.00 |
