+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Q&A for Meade ETX125 Observer Telescope — 1 Questions & 2 Answers

Name Meade ETX125 Observer Telescope (5)
Currently Unavailable View Product
Write a Review
Please keep questions related to the product! If you have questions regarding availability, pricing, or shipping options for this item, please contact our customer service team.
Need an answer right now?
Contact us!
Continue As a Guest
Saving...
Sign In or Create an Account (optional)
or Register
Why use an OpticsPlanet.com account for my questions and answers?

Having an account with OpticsPlanet.com makes writing questions and answers even better! We’ll save all of your questions and answers in your account, provide you easy access to them, so you can see how the community has responded.

If you’d like to add a question without creating an account, you can proceed with filling out the fields on this form.

Show
Sort by
Filter by
Q
joe, guest, from CA, United States, asked on February 14, 2018

Meade ETX125Observer is Mak-Cass compact, with similar high focal length [1900 mm] & ratio [f/15]. Is ETX125 a Mak/Schm-Cass variation; compare them?

Expert Answer
A
Answered by Mark H., Gear Expert, from IL, United States, on July 26, 2018

The manufacturer says:

The ETX125 Observer is a Maksutov-Cassegrain telescope. There is no such thing as a Maksutov/Schmidt-Cassegrain because the Maksutov and Schmidt names refers to the prescription of the optics and there are distinct differences. They are both catadioptric optical systems in that they have a glass optical correcting lens at the front, a primary mirror at the back, and a secondary mirror that produces an on-axis image being the primary mirror. The key difference is that the correcting lens on a Maksutov-Cassegrain has a shorter radius of curvature and smaller secondary mirror. The smaller secondary reduces the amount of light that is diffracted by the obstruction of the mirror and yields sharper and higher contrast images than a Schmidt-Cassegrain.

Mark H.

3 of 3 found the following answer helpful.
Was it helpful to you? Yes | No
Share
View 1 More Answer Submit Your Answer