1pc D150F750 Parabolic Newtonian Reflector Primary Mirror with 35mm Secondary Mirror - DIY Telescope Accessory(D150F750 parabolic Main Mirror)

Description

• Parabolic Primary Mirror with a diameter of 150mm and a focal length of 750mm, devised for superior light convergence and clarity.
• Features a 35mm secondary mirror, coated with aluminum and protective film to prevent scratches and enhance durability.
• Achieves high accuracy of 1/6-1/8, ensuring sharp and clear images for an exceptional stargazing experience.
• Includes a center mark for easy optical calibration, making it convenient to align with eyepieces or machine calibration tools.
• Ideal for DIY enthusiasts looking to create their own Newtonian telescopes, with options for selecting additional accessories as needed.

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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