Askar 71F Quadruplet Flat-Field Astrograph
Brand: Askar
SKU: ASK-71F
899.00
In Stock
7 available
71mm Quadruplet Flat-Field Astrograph for Professional Imaging
Specifications
Adapter Threads:
M48 (2"), M42 (1.25")
Aperture:
71mm (2.8")
Camera Compatibility:
Full Frame, APS-C, M4/3
Focal Length:
355mm
Focal Ratio:
f/5
Focuser:
Dual-Speed 2" Rack & Pinion
Focuser Travel:
50mm
Image Circle:
44mm
Lens Elements:
4-Element Quadruplet
Lens Material:
Premium ED Glass
Mount Type:
No Mount - OTA Only
Optical Design:
Quadruplet Flat-Field Astrograph
Tube Length:
380mm (15")
Tube Weight:
2.8kg (6.2 lbs)
Warranty:
Askar - 2 Years
Description
The Askar 71F Quadruplet Flat-Field Astrograph represents a breakthrough in astrophotography optics, featuring a sophisticated 4-element optical design specifically engineered for flat-field imaging performance. This premium astrograph combines advanced optical technology with precision engineering to deliver exceptional image quality across the entire field of view. The quadruplet design eliminates field curvature, chromatic aberration, and coma, ensuring that every pixel in your astrophotography receives the same high-quality optical treatment. Whether you're capturing wide-field deep-sky images, detailed planetary nebulae, or expansive star fields, the 71F delivers professional-grade results that will satisfy the most demanding astrophotographers.