IRDK12.5 Optical Tube Assembly

The IRDK12.5 from PlaneWave Instruments is a precision-engineered optical system specifically designed for optimal performance in infrared wavelengths. It is an exceptional tool for advanced astronomical research and environmental monitoring, offering superior capabilities in infrared imaging.

Key Features Overview

The IRDK12.5 comes with features carefully crafted for infrared optimization:

• Gold-coated mirrors optimized for high reflectivity in infrared wavelengths (ultraviolet optimization available)
• 12.5-inch (318 mm) aperture
• 2541 mm focal length
• f/8 focal ratio
• 265 mm back focus from mounting surface
• 52mm image circle
• Durable fused silica mirrors with minimal thermal expansion
• Sturdy and lightweight carbon fiber optical tube assembly
• About the IRDK12.5 (Infrared Optimized) Optical Tube Assembly

  IRDK12.5’s Key Features

  Large Aperture and Optimized Focal Ratio

  The IRDK12.5 features a significant 318 mm aperture and an f/8 focal ratio, enhancing its efficiency in capturing infrared light. This setup is perfect for detailed infrared observations and extensive exposure imaging, offering outstanding light-gathering capacity.

  Specialized Optical Design for Infrared

  The Dall-Kirkham optical design of the IRDK12.5 is tailored for infrared wavelengths. It incorporates only reflective fused silica mirrors and no refractive lenses. The reflective coatings are protected gold, ensuring more than 98% reflectivity from 0.65 microns (650nm) to 5 microns (5000nm), making it ideal for infrared astronomy and environmental LIDAR applications. UV-optimized coatings are also available upon request.

  Robust Mechanical Structure

  Constructed using carbon fiber, the optical tube of the IRDK12.5 ensures durability and stability with minimal thermal expansion. This design maintains consistent performance under varying environmental conditions, suitable for rigorous scientific applications.

  
  

  Advanced Thermal Management

  Equipped with cooling fans and a system ready for Delta-T applications, the IRDK12.5 promotes rapid thermal equilibrium. This feature is critical for minimizing air turbulence inside the tube, thereby reducing potential image distortion and enhancing the quality of imaging.

  Integrated Dew Control

  The IRDK12.5 is designed to combat condensation, a common challenge in infrared observations. Advanced dew prevention technology, including heater pads controlled via PlaneWave’s software, keeps the optical surfaces clear of dew, ensuring consistent and clear imaging performance.

  Application-Specific Benefits

  Infrared Astronomy

  The IRDK12.5 excels in infrared astronomy, where its large aperture and infrared-optimized optics allow for detailed observation of celestial objects in infrared light. This capability is essential for studying astrophysical phenomena not visible in standard optical wavelengths.

  Advanced Research and LIDAR Applications

  With its specialized design and infrared optimization, the IRDK14 is a robust platform for advanced scientific research, including LIDAR and other remote sensing applications.

  Aperture	318 mm (12.5")
  Focal Length	2541mm (100")
  Focal Ratio	f/8
  Central Obstruction	42% of the primary mirror diameter
  Back Focus from Mounting Surface	10.4 in (265 mm)
  Back Focus from Racked in Focuser	7.2 inch (183 mm)
  Weight	42 lbs (19 kg)
  OTA Length	31 in (787 mm)
  Upper Cage	Carbon fiber

  Diameter	118 mm (4.65")
  Material	Fused Silica (quartz)
  Shape	Spherical
  Coating	Protected Gold

  Optical Diameter318 mm (12.5")Outer Diameter330 mm (13")ShapeProlate EllipsoidMaterialFused Silica (quartz)CoatingProtected Gold

  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
  	Flash drive - Contains software and instructions for collimation and spacing the primary to secondary mirror
  	Wrench Set (5812A35) - Standard hex wrenches (European orders only)
  	Cable connector for fan power - Provides a connection method for powering for the fans if the user does not have the 125901 EFA kit. User must provide 12VDC power supply 2.1 barrel jack connector that is center positive. (Not included for European orders)