Baader Planetarium Reducer - 2 Inch to 1.25 Inch

Item #AAS001-1

  • Your Price:
  • $49.00
  • Convert 2" focuser for use with 1.25" format eyepieces
  • Spring bronze lock ring protects eyepiece barrels
  • Two large nickel plated brass knurled clamp screws
  • Input side is threaded with 48mm filter threads
Questions? Let our experts help!
  • Description

    Reducer 2"/1.25 (# T2-15)
    Our 2"/1.25 reducer permits you to convert your 2" focuser for use with 1.25 eyepieces and accessories. As with its little brother, the 2" reducer incorporates several useful features. A captive spring bronze lock ring guarantees protection of your eyepiece barrels from damage. This reducer also incorporates two large nickel plated brass knurled clamp screws that are oriented 90 degrees apart. The inclusion of two clamp screws results in a superior 3-point attachment that completely constrains your equipment from wobble, which is particularly important for imaging applications (typical single clamp screw adapters still allow some motion). Also, for those users that are physically unable to firmly grasp and tighten lock screws, the addition of a second screw doubles the locking force (ie, particularly nice for those unable to grip tightly due to arthritis).
    The input side is provided with 48mm filter threads and also includes a nested internal T-2 thread which enables you to use the reducer along with the other T-2 system components. One more unique feature sets our reducer apart it includes an external T-2 thread that surrounds the eyepiece opening (covered and dressed by a knurled removable ring). This thread permits you to couple other T-2 accessories to the output side. In one application, you can attach T-2 Extension Tubes and create an extremely rigid afocal or eyepiece projection system. Once again, you are free to creatively construct your own combinations.'

    Supplier SKU


    Shipping Restrictions

    Only ships in contiguous USA.

  • Dimensions & Specifications

    Telescope Accessories Series



    Baader Planetarium


    2 Year Manufacturers Warranty

  • Product Guarantee

    We stand behind all the products we sell, and your satisfaction is our top priority. If you're not satisfied with the quality of your purchase, simply send the item back to us in its original packaging within 30 days of its delivery.

    Manufacturer Warranty

    This product has a 2 year manufacturer's warranty against defects is provided. If you have specific questions about this product's warranty please contact Alpine Astronomical's Customer Service department by email at

    Return & Exchange Policy

    At our site, returns are easy! You may return new, unused, and resalable items for a refund or exchange. Simply ensure that the item is returned in its original product packaging within 30 days of delivery.

Ask The Experts

Have questions about an item or need advice on selecting the right astronomy gear? Our team of telescope experts is here to help! Avid amateur astronomers themselves, they've tested products in the field and can provide personalized recommendations.

You can reach our Customer Support line at 1-800-303-5873. We're open 8 a.m. to 8 p.m. Central Time, Monday through Friday and 9 a.m. to 4 p.m. on Saturday.

After hours? Drop us an email at We'll get back to you as soon as possible, usually within 1 business day.