Askar "SQA130 Telescope Tube" Launched: A 130mm Aperture, 5-Group 5-Element (with 2 SD Glass Elements) Ultra-High Resolution Petzval-Type Astrograph
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Frequently Asked Questions
- Q: What is the aperture and focal length of the new Askar SQA130 Telescope Tube?
- A: The Askar SQA130 Telescope Tube features a 130mm objective lens aperture and a bright focal length of 624mm, resulting in an f/4.8 aperture ratio.
- Q: What type of optical design does the Askar SQA130 utilize for its high-resolution imaging?
- A: The Askar SQA130 employs a 5-group, 5-element air-spaced Petzval design, incorporating two lenses made with SD glass (Special Low Dispersion glass) for extreme aberration correction.
- Q: What is the image circle coverage provided by the Askar SQA130 Telescope Tube?
- A: The Askar SQA130's image circle supports medium format (φ55mm), comfortably covering full-frame sensors (φ44mm) with excellent peripheral illumination.
- Q: What are the RMS spot radius specifications for the Askar SQA130, indicating its image sharpness?
- A: The Askar SQA130 achieves an impressive RMS spot radius of less than 2μm at the center and less than 2.4μm even at the periphery of full-frame, ensuring exceptional star image quality.
- Q: When is the official launch date for the Askar SQA130 Telescope Tube in Japan?
- A: The Askar SQA130 Telescope Tube is scheduled to be launched on March 27, 2026, by Sightron Japan Co., Ltd.