Free Shipping On Many Items

The Telescope Authority
Since 1947

View Shopping Cart

Your Cart is Empty

Astro-Physics 2.7" Spacer Rings - Set of 3

SKU : AP-SRSET-27

- Read
  • More on the Way in 14 - 28 Days

Add to Wishlist

Got questions? Click for live chat

Product Details

  • Set of three 1 mm thick spacer rings that can be used in special circumstances to modify the back focus spacing of your field flatteners or telecompressor connectors.

    Here are some recommendations from Astro-Physics to achieve proper spacing.

    • Increase the spacing by adding one, two, or three spacer rings to 2.7" extensions (EXT27-...) in your imaging train
    • If you own a field flattener or TCC telecompressor corrector with male 3.27" threads, first you can reduce the distance by switching to a shorter 3.27" back focus spacer extension (EXT327-...). Then, you will either add the appropriate number of these 2.7" rings to achieve the optimum spacing, use the 3.27" spacer rings (SRSET-327), or a combination of both. You can easily experiment with 1 mm increments
    • These spacer rings are designed to easily slip over the 2.7" thread of the telecompressor correctors and CCD field flatteners

    Below are some helpful links for usage with these spacer rings:

    Field Flatteners, TCCs, and QUADTCC Imaging Train Options

    Determining Ring Spacing Options

Product Reviews