The Tele Vue EBX-2120 uses up 1.2″ of optical backfocus to help parfocalise different eyepiece sets or reduce the amount your focuser needs to rack out by to reach focus.
AUD Price shown includes GST
GST is removed at checkout for NZ
$62.00
AUD Price shown includes GST
GST is removed at checkout for NZ
Only 1 left in stock (can be backordered)
Need some help? Contact us.
Found a better price? Click here and watch us try to beat it.
Secure, Encrypted Checkout.
Credit cards not stored.
Expert, After Sales Support.
We fully support our products!
Minimum 2-Year Warranty.
+ extended manufacturer warranties.
Aussie Owned & Stocked.
Ships fast from Sydney!
Same Day Shipping.
If you order before 2pm!
Tele Vue 2 Inch Eyepiece Barrel Extender (EBX-2120)
The Tele Vue EBX-2120 2″ Eyepiece Barrel Extender increases backfocus distance and provides a mounting location for 2″ (48mm) eyepiece filters. It can also help parfocalize eyepiece sets. Extender adds 1.2-inches to the 2″ barrel.
Models with dual 2″ / 1¼” barrels can use the extender.
The EBX-2120 makes the 12mm approximately parfocal with the 17mm and 22mm Nagler Type-4 eyepieces when used in a Tele Vue 2″ diagonal.
Because the field stop is located near the bottom of the chrome eyepiece barrel, you will need to rack your focuser out further, relative to most other eyepieces. If you find that you cannot rack your focuser out enough to achieve focus, Tele Vue strongly recommend you purchase the EBX-2120. This will make Tele Vue’s 55mm Plössl eyepiece approximately parfocal with the Tele Vue 27mm Panoptic eyepiece.