Skip to content
Trusted advice since 1979 Excellent 4.5 rating on Google Reviews Free Shipping On Orders Over $100

Products

Filters

$
$
  • 2" 99% Reflectivity dielectric mirror diagonal for SCTs
    $149.95 - $149.95
    $149.95
    $149.95 - $149.95
    $149.95

    Astro-Tech 2" 99% Reflectivity Dielectric Mirror Diagonal for SCTs

    Astro-Tech
    In Stock

    This 2" dielectric mirror-type star diagonal is designed to give you first-class performance with a Schmidt-Cassegrain - at a money-saving and far ...

    View full details
    $149.95 - $149.95
    $149.95
    $149.95 - $149.95
    $149.95
  • Sold out
    $19.95 - $19.95
    $19.95
    $19.95 - $19.95
    $19.95

    Astro-Tech 2" Crystalview Moon Filter

    Astro-Tech
    Sold Out

    This Astro-Tech 2” 13% transmission neutral gray filter reduces the brightness and glare that can mask low contrast details during lunar and planet...

    View full details
    $19.95 - $19.95
    $19.95
    $19.95 - $19.95
    $19.95
    Sold out
  • 2" Extension ring for A-T Ritchey-Chrétien astrographs
    Sold out
    $34.95 - $34.95
    $34.95
    $34.95 - $34.95
    $34.95

    Astro-Tech 2" Extension Ring for A-T Ritchey-Chrétien Astrographs

    Astro-Tech
    Sold Out

    This Astro-Tech 2" long x 90mm diameter extension ring can be installed between the rear cell of an Astro-Tech Ritchey-Chrétien astrograph and its ...

    View full details
    $34.95 - $34.95
    $34.95
    $34.95 - $34.95
    $34.95
    Sold out
  • Sold out
    $149.95 - $149.95
    $149.95
    $149.95 - $149.95
    $149.95

    Astro-Tech 2" Field Flattener for Imaging with Astro-Tech and TMB Refractors

    Astro-Tech
    Sold Out

    New for August 2021, thread on adatper tops to choose between 42mm T-threads and 48mm T-threads. Named a Sky & Telescope Hot Product of the Yea...

    View full details
    $149.95 - $149.95
    $149.95
    $149.95 - $149.95
    $149.95
    Sold out
  • 2" x 35mm extension tube
    Sold out
    $29.95 - $29.95
    $29.95
    $29.95 - $29.95
    $29.95

    Astro-Tech 2" x 35mm Extension Tube

    Astro-Tech
    Sold Out

    This Astro-Tech 2" x 35mm extension tube is used to make up for the loss of light path when a 2" star diagonal is removed from many refractor focus...

    View full details
    $29.95 - $29.95
    $29.95
    $29.95 - $29.95
    $29.95
    Sold out
  • 2" x 50mm extension tube
    Sold out
    $29.95 - $29.95
    $29.95
    $29.95 - $29.95
    $29.95

    Astro-Tech 2" x 50mm Extension Tube

    Astro-Tech
    Sold Out

    This Astro-Tech 2" x 50mm extension tube is used to make up for the loss of light path when a 2" star diagonal is removed from many refractor focus...

    View full details
    $29.95 - $29.95
    $29.95
    $29.95 - $29.95
    $29.95
    Sold out
  • $0.00 - $0.00
    $0.00
    $299.95
    $299.95 - $299.95
    $299.95

    Astro-Tech 20mm 100° Field Waterproof XWA 2" Eyepiece

    Astro-Tech
    In Stock

    The 100° apparent field of the Astro-Tech 20mm waterproof 2" eyepiece provides superb maximum field/medium power observing in all scopes, from smal...

    View full details
    $0.00 - $0.00
    $0.00
    $299.95
    $299.95 - $299.95
    $299.95
  • $9.95 - $9.95
    $9.95
    $9.95 - $9.95
    $9.95

    Astro-Tech 20mm T-Thread Spacer Ring For DSLR And CCD Imaging With 42mm Threads

    Astro-Tech
    In Stock

    This Astro-Tech 20mm T-thread spacer ring can help provide the necessary spacing between a DSLR or CCD camera's focal plane and a reducer, field fl...

    View full details
    $9.95 - $9.95
    $9.95
    $9.95 - $9.95
    $9.95
  • Save $40.00 Save $0.00
    $239.95
    $239.95 - $239.95
    $239.95
    $199.95
    $199.95 - $199.95
    $199.95

    Astro-Tech 21mm UWA 82° 2" Eyepiece

    Astro-Tech
    More on the way

    This Astro-Tech 21mm waterproof eyepiece is a substantial 2" eyepiece that will give impressively sharp and contrasty wide field views of nebulas, ...

    View full details
    $239.95
    $239.95 - $239.95
    $239.95
    $199.95
    $199.95 - $199.95
    $199.95
    Save $40.00 Save $0.00
  • 24mm illuminated reticle eyepiece
    $59.95 - $59.95
    $59.95
    $59.95 - $59.95
    $59.95

    Astro-Tech 24mm Illuminated Reticle Eyepiece

    Astro-Tech
    In Stock

    The economical Astro-Tech #AT24IL illuminated reticle 1.25" eyepiece helps you align your go-to telescope on the sky, check your polar alignment fo...

    View full details
    $59.95 - $59.95
    $59.95
    $59.95 - $59.95
    $59.95
  • 25mm 1.25" Paradigm Dual ED
    $65.00 - $65.00
    $65.00
    $65.00 - $65.00
    $65.00

    Astro-Tech 25mm 1.25" Paradigm Dual ED Eyepiece

    Astro-Tech
    More on the way

    This Astro-Tech 25mm Paradigm Dual ED is an excellent medium to low power eyepiece for encompassing open clusters, picking up detail in emission an...

    View full details
    $65.00 - $65.00
    $65.00
    $65.00 - $65.00
    $65.00
  • $40.00 - $40.00
    $40.00
    $40.00 - $40.00
    $40.00

    Astro-Tech 25mm 1.25" PF Eyepiece

    Astro-Tech
    In Stock

    Looking to upgrade your standard 25/26mm eyepiece? Look no further than the Astro-Tech 25mm PF series eyepiece. So, I know someone will wonder what...

    View full details
    $40.00 - $40.00
    $40.00
    $40.00 - $40.00
    $40.00
  • Save $40.00 Save $0.00
    $239.95
    $239.95 - $239.95
    $239.95
    $199.95
    $199.95 - $199.95
    $199.95

    Astro-Tech 28mm UWA 82° 2" Eyepiece

    Astro-Tech
    In Stock

    This Astro-Tech 28mm waterproof eyepiece is a substantial 2" eyepiece that will give impressively sharp and contrasty wide field views of nebulas, ...

    View full details
    $239.95
    $239.95 - $239.95
    $239.95
    $199.95
    $199.95 - $199.95
    $199.95
    Save $40.00 Save $0.00
  • 2X achromatic Barlow for 1.25" eyepieces
    Sold out
    $29.95 - $29.95
    $29.95
    $29.95 - $29.95
    $29.95

    Astro-Tech 2X Achromatic Barlow for 1.25" Eyepieces

    Astro-Tech
    Sold Out

    This physically short (3.1") Astro-Tech 2x achromatic Barlow is an inexpensive way to cleanly double the power of any 1.25" eyepiece in your collec...

    View full details
    $29.95 - $29.95
    $29.95
    $29.95 - $29.95
    $29.95
    Sold out
  • $59.95 - $59.95
    $59.95
    $59.95 - $59.95
    $59.95

    Astro-Tech 2X Telecentric Extender Barlow for 1.25" Eyepieces

    Astro-Tech
    In Stock

    This Astro-Tech 2x Telecentric Extender, ie a Barlow, is a great way to cleanly double the power of any 1.25" eyepiece in your collection . . . The...

    View full details
    $59.95 - $59.95
    $59.95
    $59.95 - $59.95
    $59.95
  • Astro-Tech 3.2mm 1.25" Paradigm Dual ED Eyepiece
    $65.00 - $65.00
    $65.00
    $65.00 - $65.00
    $65.00

    Astro-Tech 3.2mm 1.25" Paradigm Dual ED Eyepiece

    Astro-Tech
    More on the way

    This Astro-Tech 3.2mm Paradigm Dual ED eyepiece is excellent for medium high to high power magnification viewing with short to medium focal length ...

    View full details
    $65.00 - $65.00
    $65.00
    $65.00 - $65.00
    $65.00
  • $279.95 - $279.95
    $279.95
    $279.95 - $279.95
    $279.95

    Astro-Tech 3.5mm 110° Field Waterproof 1.25"/2" Eyepiece

    Astro-Tech
    In Stock

    The Astro-Tech 3.5mm o-ring sealed 1.25"/2" eyepiece combines a high power capability with a 110° apparent field to provide a jaw-dropping observin...

    View full details
    $279.95 - $279.95
    $279.95
    $279.95 - $279.95
    $279.95
  • $9.95 - $9.95
    $9.95
    $9.95 - $9.95
    $9.95

    Astro-Tech 30mm T-Thread Spacer Ring For DSLR And CCD Imaging With 42mm Threads

    Astro-Tech
    In Stock

    This Astro-Tech 30mm T-thread spacer ring can help provide the necessary spacing between a DSLR or CCD camera's focal plane and a reducer, field fl...

    View full details
    $9.95 - $9.95
    $9.95
    $9.95 - $9.95
    $9.95
  • $0.00 - $0.00
    $0.00
    $279.95
    $279.95 - $279.95
    $279.95

    Astro-Tech 4.8mm 110° Field Waterproof 1.25"/2" Eyepiece

    Astro-Tech
    In Stock

    The Astro-Tech 4.8mm o-ring sealed 1.25"/2" eyepiece combines a high power capability with a 110° apparent field to provide a jaw-dropping observin...

    View full details
    $0.00 - $0.00
    $0.00
    $279.95
    $279.95 - $279.95
    $279.95
  • 4mm 1.25" Value Line Plössl
    Sold out
    $17.95 - $17.95
    $17.95
    $17.95 - $17.95
    $17.95

    Astro-Tech 4mm 1.25" Value Line Plössl Eyepiece

    Astro-Tech
    Sold Out

    This product has been discontinued and is here for informational purposes only. This 4mm Astro-Tech Value Line is one of the shortest focal length ...

    View full details
    $17.95 - $17.95
    $17.95
    $17.95 - $17.95
    $17.95
    Sold out
  • Save $20.00 Save $0.00
    $119.95
    $119.95 - $119.95
    $119.95
    $99.95
    $99.95 - $99.95
    $99.95

    Astro-Tech 4mm UWA 82° 1.25" Eyepiece

    Astro-Tech
    In Stock

    This 4mm Astro-Tech 82° field eyepiece is an excellent very high power, very wide field eyepiece for resolving globular clusters and closely-spaced...

    View full details
    $119.95
    $119.95 - $119.95
    $119.95
    $99.95
    $99.95 - $99.95
    $99.95
    Save $20.00 Save $0.00
  • $40.00 - $40.00
    $40.00
    $40.00 - $40.00
    $40.00

    Astro-Tech 5.5mm 1.25" PF Eyepiece

    Astro-Tech
    In Stock

    This Astro-Tech 5.5mm PF series eyepiece has excellent eyerelief and a fantastic flat field to further enhance your viewing pleasure. This Astro-Te...

    View full details
    $40.00 - $40.00
    $40.00
    $40.00 - $40.00
    $40.00
  • 5mm 1.25" Paradigm Dual ED
    $65.00 - $65.00
    $65.00
    $65.00 - $65.00
    $65.00

    Astro-Tech 5mm 1.25" Paradigm Dual ED Eyepiece

    Astro-Tech
    More on the way

    This Astro-Tech 5mm Paradigm Dual ED eyepiece is excellent for medium to medium high magnification viewing with short to medium focal length refrac...

    View full details
    $65.00 - $65.00
    $65.00
    $65.00 - $65.00
    $65.00
  • $9.95 - $9.95
    $9.95
    $9.95 - $9.95
    $9.95

    Astro-Tech 5mm T-Thread Spacer Ring For DSLR And CCD Imaging With 42mm Threads

    Astro-Tech
    In Stock

    This Astro-Tech 5mm T-thread spacer ring can help provide the necessary spacing between a DSLR or CCD camera's focal plane and a reducer, field fla...

    View full details
    $9.95 - $9.95
    $9.95
    $9.95 - $9.95
    $9.95

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare