1pc D150F750 Parabolic Newton Reflector Primary Mirror & 35mm Secondary Mirror - High Precision DIY Astronomy Accessory(D150F750 parabolic Main Mirror)

Description

• Parabolic devise: This D150F750 primary mirror features a parabolic shape that effectively corrects optical aberrations, ensuring sharp and clear images during your astronomical observations.
• Durable Construction: Made from premium glass material, this 150mm primary mirror has a thickness of approximately 18mm, providing durability and longevity for your DIY telescope projects.
• Easy Calibration: The primary mirror comes with a center mark, allowing for straightforward optical calibration with either an eyepiece or machine, making it ideal for both beginners and experienced astronomers.
• Aluminum Coated Surface: The lens surface is coated with an aluminum film and protective layer, safeguarding against scratches and enhancing light reflection for improved viewing .
• Versatile Compatibility: This mirror can be used as a standalone primary mirror or in conjunction with a secondary 35mm lens, giving you the flexibility to customize your telescope setup according to your needs.

The primary mirror center mark is the core reference point of the dimming axis of the Newtonian reflector telescope, which is convenient for optical calibration of the eyepiece or machine calibration of the eyepiece dimming axis after lens installation.
Please select the main mirror, or secondary mirror, or complete accessories according to your needs
Mirror-related knowledge
The difference between spherical primary mirror and parabolic primary mirror:
Spherical mirrors inherently cannot converge the light from the edges and the center together. Therefore, in cases of large aperture and short focal ratio, it will result in loose imaging, blurred edges, and other issues.
In contrast, parabolic primary mirrors have inherent advantages. They can effectively correct aberrations, so for achieving good observation results, it is recommended to use parabolic mirror type.

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