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Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads
Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

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Used  US$14.40
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Product details

Management number 225825059 Release Date 2026/05/09 List Price US$14.40 Model Number 225825059
Category
  1. Electronics
  2. Camera & Photo
  3. Accessories
  4. Telescope & Microscope Accessories
  5. Telescope Accessories
  6. Photo Adapters
  • Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter provide extra focuser back travel sometimes needed to achieve focus with certain eyepiece or telescope combinations. More back travel is often needed for short-range terrestrial viewing or with use of a field flattener, coma corrector, or focal reducer lens. Extension tube provides extra focuser "back travel" often needed for short-range terrestrial viewing through a telescope, or for astrophotographic applications.
  • Extension tube provides extra focuser: back travel often needed for short range terrestrial viewing through a telescope; or for astrophotographic applications
  • Features two locking thumbscrews to secure any inserted astronomy accessory; with a brass compression insh to prevent the marring of your telescope accessories
  • Machined of high quality aluminum and anodized black; resistant for long time use
  • Fits in 2 inch telescope focusers and accepts 2 inch eyepieces or accessories; Threaded for use with standand 2 inch astrophotography filters
ASIN B074J1JNWZ
Item Weight 7.2 ounces
Manufacturer Alstar
Item model number SKU_AM_ETA280A
Product Dimensions 2.7 x 2.7 x 5.1 inches
Is Discontinued By Manufacturer No

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

Alstar 2-Inch Telescope Eyepiece Extension Tube Adapter - Optical Length 80mm - with Standand 2-Inch Filter Threads

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