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Astro Systems

8 Items

Astro Systems 1.25" Autocollimator Eyepiece - AUTOCOL

SKU: AST-AUTOCOL
  • This AstroSystems 1.25" Autocollimator fine tunes optical alignment following the use of the LightPipe/SightTube or laser collimator.
  • Uses a flat mirror to provide the optical system with a second reflection.
  • Doubles the accuracy of a Cheshire, LightPipe, or laser collimator.
  • Comes with a 14-page instruction booklet.
$49.00

Astro Systems Secondary Dew Guard For 1.3" to 2.14" Secondary Mirrors - DG1

SKU: AST-DG1
  • Known to Fit by Aperture: Secondary Mirrors
  • Known to Fit by Model: 1.3" to 2.14" Newtonian Secondary Mirrors
$40.00

Astro Systems Secondary Dew Guard 2.6" to 3.1" Secondary Mirrors - DG2

SKU: AST-DG2
  • Known to Fit by Aperture: Secondary Mirrors
  • Known to Fit by Model: 2.6" to 3.1" Newtonian Secondary Mirrors
$45.00

Astro Systems Secondary Dew Guard 3.5" to 6.0" Secondary Mirrors - DG3

SKU: AST-DG3
  • Known to Fit by Aperture: Secondary Mirrors
  • Known to Fit by Model: 3.5" to 6.0" Newtonian Secondary Mirrors
$50.00

Astro Systems Lite Pipe / Site Tube Combo - 1.25" - LPST

SKU: AST-LPST
  • This AstroSystems collimator combines LightPipe and SiteTube collimators into one simple, low-cost device.
  • LightPipe accurately aligns Newtonian reflector telescope optics, while the SightTube accurately aligns the focuser with the secondary mirror.
  • Construction consists of precision-designed anodized aluminum, acrylic insert, and stainless steel crosshair wires.
  • Comes with a 14-page instruction booklet.
$49.00

Astro Systems 2" to 1.25" Standard Eyepiece Adapter - SEA

SKU: AST-SEA
  • The Standard Eyepiece Adapter is designed to let users use 1.25" eyepieces with a telescope that accept 2" eyepieces.

  • Astro Systems has designed this adapter out of anodized aluminum.

  • The Astro Systems Eyepiece Adapter is threaded for 48 mm filters.

  • Included with this adapter is a polished stainless steel set screw.
$29.00

AstroSystems Dew Shield for Telrad Finder

SKU: AST-TRDDEW
  • Known to Fit by Aperture: Telrad Finders
  • Known to Fit by Model: Telrad Finders
$18.00

Astro Systems 2" to 1.25" Ultra-Low Eyepiece Adapter - ULA

SKU: AST-ULA
  • Using this eyepiece adapter will lower the profile of a 1.25" eyepiece by 0.5" below the drawtube.

  • Astro System's Ultra-Low eyepiece adapter is compatible with any 2" focuser.

  • The adapter has an internal diameter is 1.9" (48.2 mm).

  • Included with the Astro Systems adapter is a compression ring and hex key.
$27.00

Astro Systems was founded in 1986 to fill the void in amateur astronomy for reasonably priced, quality telescope kits. Amateur astronomers were able to build their own telescopes without the hassle of finding all of the essential materials. They have since expanded their product line to telescope accessories, such as dew-prevention systems, adapters, and much more. The benefit of purchasing an Astro Systems product is that each product is made by amateur astronomers, for amateur astronomers. They understand that astronomy must be accessible to all, regardless of your budget.


This methodology is apparent in every Astro Systems accessory you will find on our website. For example, they offer two different eyepiece adapters so you, the customer, can make the decision which one is best for you. This also gives you options for additional focus travel, if needed. The popular Astro Systems Secondary Dew Guards also comes in many different sizes to suit a wide range of Newtonians. This secondary mirror heating system maintains the secondary at a preset temperature above the ambient air temperature, making it an essential accessory for any Newtonian owner.


Don’t see what you’re looking for? Let us know! Give us a call and we will work to get you the accessories you need. Any product you purchase from us comes with Lifetime Technical Support. Rest assured that our team of experts will support you for as long as you own one of our products.

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