Schmidt-Cassegrains

Schmidt-Cassegrains

Although there are many variations (both mirrors spherical, both mirrors aspherical or one of the two). Can they be divided into two main design forms: compact and non-compact.

In its compact form, the corrector plate is located on or near the focus of the primary mirror. In the non-compact, the corrector plate remains at or near the center of curvature (twice the focal length) of the primary mirror.

Read more

Typical examples of the compact design are Celestron commercial instruments. Which combine a fast primary mirror and a small, highly curved secondary mirror. This results in a very short tube length, at the expense of the field curvature.

Most of Celestron’s compact designs have a primary mirror with a focus ratio of f / 2 and a secondary with a focus ratio of f / 5, resulting in a focal ratio of f / 10.

A notable exception is the Celestron C9.25, which has a primary focus ratio of f / 2.3. And has a secondary focus ratio of f / 4.3. The result is a slightly flatter field and slightly longer tube aspect ratio than most other compact designs.

FILTER
Items per page:

Showing 1–18 of 60 results

  • Celestron NexStar Evolution 8HD limited edition

    Celestron NexStar Evolution 8HD limited edition

    Aperture (mm): 203.2
    Focal length (mm): 2032
    Speed ​​(f): 10
    Rated 0 out of 5
     3.699,00
    Beschikbaar via nabestelling
  • Celestron StarSense Explorer DX 5 inch telescoop

    Celestron StarSense Explorer DX 5 inch telescoop

    Aperture (mm): 125
    Focal length (mm): 1250
    Speed ​​(f): 10
    Rated 0 out of 5
     749,00
    Delivery time: 1 to 3 business days
  • Celestron StarSense Explorer DX 6 inch telescoop

    Celestron StarSense Explorer DX 6 inch telescoop

    Aperture (mm): 150
    Focal length (mm): 1500
    Speed ​​(f): 10
    Rated 0 out of 5
     849,00
    Beschikbaar via nabestelling
  • Occasion Celestron C5 Schmidt-Cassegrain

    Occasion Celestron C5 Schmidt-Cassegrain

    Aperture (mm): 125
    Focal length (mm): 1250
    Speed ​​(f): 10
    Rated 0 out of 5
     399,00
    Beschikbaar via nabestelling
  • Celestron 8 inch Rowe Ackermann Schmidt Astrograph F2

    Celestron 8 inch Rowe Ackermann Schmidt Astrograph F2

    Aperture (mm): 203
    Focal length (mm): 400
    Speed ​​(f): 2
    Rated 0 out of 5
     2.295,00
    Beschikbaar via nabestelling
  • Celestron Advanced VX 6 inch SCT

    Celestron Advanced VX 6 inch SCT

    Aperture (mm): 150
    Focal length (mm): 1500
    Speed ​​(f): 10
    Rated 0 out of 5
     1.825,00
    Beschikbaar via nabestelling
  • Celestron AVX 8 inch SCT

    Celestron Advanced VX 8 inch SCT

    Aperture (mm): 203.2
    Focal length (mm): 2032
    Speed ​​(f): 10
    Rated 0 out of 5
     2.495,00
    Delivery time: 1 to 3 business days
  • Celestron Advanced VX 8 inch Edge HD

    Celestron Advanced VX 8 inch Edge HD

    Aperture (mm): 203.2
    Focal length (mm): 2032
    Speed ​​(f): 10
    Rated 0 out of 5
     2.795,00
    Beschikbaar via nabestelling
  • Celestron Advanced VX 9.25 inch

    Celestron Advanced VX 9.25 inch

    Aperture (mm): 235
    Focal length (mm): 2350
    Speed ​​(f): 10
    Rated 0 out of 5
     3.049,00
    Beschikbaar via nabestelling
  • Celestron Advanced VX 11 inch SCT

    Celestron Advanced VX 11 inch SCT

    Aperture (mm): 280
    Focal length (mm): 2800
    Speed ​​(f): 10
    Rated 0 out of 5
     3.495,00
    Beschikbaar via nabestelling
  • Celestron Astro Fi 5 Schmidt-Cassegrain telescoop

    Celestron Astro Fi 5 Schmidt-Cassegrain telescoop

    Aperture (mm): 125
    Focal length (mm): 1250
    Speed ​​(f): 10
    Rated 0 out of 5
     799,00
    Delivery time: 1 to 3 business days
  • Celestron Astro Fi 6

    Celestron Astro Fi 6 Schmidt-Cassegrain telescoop

    Aperture (mm): 150
    Focal length (mm): 1500
    Speed ​​(f): 10
    Rated 0 out of 5
     925,00
    Beschikbaar via nabestelling
  • Celestron C11-XLT OTA telescoop buis

    Celestron C11-XLT OTA telescoop buis

    Aperture (mm): 279.4
    Focal length (mm): 2800
    Speed ​​(f): 10
    Rated 0 out of 5
     2.649,00
    Beschikbaar via nabestelling
  • Celestron C14-A XLT (CGE) OTA telescoop buis

    Celestron C14-A XLT (CGE) OTA telescoop buis

    Aperture (mm): 355.5
    Focal length (mm): 3910
    Speed ​​(f): 11
    Rated 0 out of 5
     7.295,00
    Beschikbaar via nabestelling
  • Celestron C6-XLT OTA

    Celestron C6-XLT OTA telescoop buis

    Aperture (mm): 150
    Focal length (mm): 1500
    Speed ​​(f): 10
    Rated 0 out of 5
     875,00
    Delivery time: ask us for the delivery time
  • Celestron C8 CGE OTA telescoop buis

    Celestron C8 CGE OTA telescoop buis

    Aperture (mm): 203.2
    Focal length (mm): 2032
    Speed ​​(f): 10
    Rated 0 out of 5
     1.325,00
    Delivery time: ask us for the delivery time
  • Celestron C9.25 CGE OTA telescoop buis

    Celestron C9.25 CGE OTA telescoop buis

    Aperture (mm): 235
    Focal length (mm): 2350
    Speed ​​(f): 10
    Rated 0 out of 5
     1.925,00
    Beschikbaar via nabestelling
  • Celestron CGEM II 800

    Celestron CGEM II 800 telescoop set

    Aperture (mm): 203.2
    Focal length (mm): 2032
    Speed ​​(f): 10
    Rated 0 out of 5
     3.495,00
    Beschikbaar via nabestelling
FILTER
Items per page:

Showing 1–18 of 60 results