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  • Astrodon

    Astrodon (50)

    The best performing astronomy filters on the market. Step up to Astrodon Filters

    A note on back-orders. There is often a long waiting list for Astrodon Filters and the best thing to do is to place your order to get on the waiting list. Back-orders are usually filled within 6-8 weeks. We have increased production and we continue to work to reduce wait times. Thank you for your patience.

    Astrodon is known for designing the best performing, most durable filters for astrophotography and research.

    For astrophotography, Astrodon LRGB filters simplify imaging by allowing you to take one exposure time for each color, only one corresponding dark exposure time and nearly equal color combine weights in post-processing. The resulting color balance is superb, which is why so many of the top imagers now use Astrodon LRGB filters. These designs eliminate halos around bright stars that detract from the beauty of the galaxy or nebula.

    Astrodon  Narrowband filters set the highest, consistent performance level, and are spectrally narrower than most other filters, leading to the best contrast and faintest structures in your nebula. Astrodon has a performance guarantee of >90%T at the emission line on every box.

    UBVRI and Sloan PHOTOMETRIC filters are 100%-coated using no colored glass for long-term durability that is so critical for consistent, long-term research. They have the highest throughputs available for better signals and fainter objects and are becoming widely accepted in professional observatories in sizes up to 150mm. Some of these larger filters are used on the famous Palomar 200″ telescope, at the MacDonald Observatory, Las Cumbres Observatory of Global Telescopes, AAVSO and universities and research organizations worldwide.

    All Astrodon astrophotography filters are manufactured in the U.S. with superb quality control using 100% hard-oxide sputtered coatings. Astrodon filters cost a little more because of the benefits that their high performance and great durability provides. Filters are a critical part of telescope systems. They are the “spark plugs” that make the “engine” go. Step up to Astrodon and see the difference.

    Please explore our product pages to learn more about how Astrodon products can help you.

  • Farpoint

    Farpoint (241)

    Farpoint is owned by Optical Structures Incorporated, a high-tech manufacturing company that specializes in electro-optical-mechanical engineering and manufacturing.  Farpoint provides optical accessories that assist with collimation and focusing, along with a wide assortment of moisture prevention and dust control solutions.

  • JMI

    JMI (105)

    JMI, owned by Optical Structures Incorporated, is a world-renowned manufacturer of astronomical telescopes and after-market accessories for the amateur and professional astronomer.  JMI produces a variety of unique products that cannot be found anywhere else.

  • Lumicon

    Lumicon (143)

    Lumicon, owned by Optical Structures Incorporated, offers you the best and most extensive line of astronomical accessories for every imagined visual and astrophotographic application, in many configurations and sizes. Lumicon proudly offers you the most unique patented and useful accessories, including the world-famous series of Easy Guiders, Richfield Viewers, diagonals, finderscopes, illuminated reticles, guiding eyepieces, Binoviewers, and visual and astrophotographic accessories.

  • Optic Wave Labs

    Optic Wave Labs (4)

    Optic Wave Labs manufactures reflecting optics up to 1m diameter. Spherical, parabolic, flats and custom work. We work with a variety of optical substrates ranging from borosilicate (pyrex) to zero expansion materials, such as Zerodur, Astrositall, Corning ULE or Clearceram-Z. OWL also manufactures its own cast cellular mirror blanks in a variety of shapes and sizes on a custom order basis.

    OWL also provides a host of optical services such as optical coatings, optical testing and re-figuring. For more information, go to https://opticwavelabs.com/

  • ALCOR

    ALCOR (13)

  • APM

    APM (19)

    APM Telescopes has been manufacturing high-end objective lens telescopes with apochromatic lenses for more than 28 years.  They have advanced and expanded their product range to an even higher level, from Apochromats with 4″ optics up to a 530mm Triplet Apo – in doing so they are not only setting a mark but also creating the standard!

  • Astro Hutech

    Astro Hutech (3)

  • Atik

    Atik (17)

  • Borg

    Borg (9)

  • Celestron

    Celestron (5)

  • Chroma

    Chroma (1)

  • DayStar

    DayStar (5)

  • IDAS

    IDAS (2)

  • IDEA Engineering

    IDEA Engineering (1)

  • Kendrick Astro

    Kendrick Astro (17)

  • Losmandy

    Losmandy (32)

  • Lunt Engineering

    Lunt Engineering (1)

    Lunt Engineering employs optical, software and mechanical engineers specializing in the production of telescope optics, software and mechanics.

  • Meade

    Meade (1)

  • MoonLite

    MoonLite (3)

  • Parallax

    Parallax (1)

  • PRIMACLUCELAB

    PRIMACLUCELAB (2)

  • Rainbow Astro

    Rainbow Astro (2)

  • StarKeeper

    StarKeeper (1)

  • Starlight Instruments

    Starlight Instruments (2)

  • Tele Vue

    Tele Vue (40)

  • O'Telescope

    O'Telescope (2)

  • Pier-Tech

    Pier-Tech (2)

  • Pegasus Astro

    Pegasus Astro (6)

  • QHY

    QHY (28)

  • QSI

    QSI (16)

  • Romor

    Romor (1)

  • SBIG

    SBIG (15)

  • Software Bisque

    Software Bisque (52)

  • Starlight Innovation

    Starlight Innovation (1)

    Starlight Innovation Observing Chairs and Accessories

  • Starlight Xpress

    Starlight Xpress (24)

  • Takahashi

    Takahashi (21)

  • TEC

    TEC (5)

  • Telegizmos

    Telegizmos (11)

  • ZWO ASI

    ZWO ASI (17)