Askar FRA400 Quintuplet APO Astrograph

The Askar FRA400 Quintuplet APO Astrograph is a precision-crafted wide-field imaging telescope built for astrophotographers who demand sharpness across the entire frame. This f/5.6 quintuplet Petzval design features a 72mm aperture and a 400mm focal length, delivering a 44mm corrected image circle suitable for full-frame sensors with pinpoint star performance.

• Quintuplet APO design with two-element field flattener and three-element objective for superior image correction
• 44mm fully illuminated image circle—ideal for DSLR and full-frame dedicated astronomy cameras
• Built-in field flattener ensures edge-to-edge sharpness without requiring extra accessories
• Precision rack-and-pinion 3" focuser with 360° rotator and M68 thread connection
• Retractable dew shield and CNC machined tube with anodized red accents for portability and durability
• Includes fine focus adjustment for accurate calibration during visual or imaging sessions
• Optional focal reducer brings system down to f/3.9 for even faster deep-sky imaging
• Back focus of 140mm simplifies imaging train setup with standard components

The Askar FRA400 offers performance that rivals far more expensive instruments, making it a top-tier option for serious imagers seeking versatility, fast optics, and exceptional mechanical quality in a compact package.

• FRA400 Optical Tube Assembly (OTA)
• Pair of CNC-machined tube rings
• Carry handle attached to tube rings
• Vixen-style dovetail mounting plate
• 1.25" and 2" eyepiece adapters
• M68 thread adapter
• Inspection list & manual