Telescopes & Astronomy

Beginner Telescopes
Kids' Telescope

Buying your first telescope? Browse our curated selection of beginner telescopes.

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Telescope Use

What will you use your telescope for? Explore the many uses of different types of telescopes.

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Cassegrain Telescope

Choose your telescope by optical design or learn more about the different types of telescopes.

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  1. ZWO Nikon Lens adapter to 2 inch Filter wheel
    AUD $109.00

    In Stock

    Nikon lens adapter that can be used to connect Nikon lens to 2” EFW.

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  2. ZWO M54-M48 extender 21mm
    AUD $45.00

    In Stock

    The ZWO M54-M48 extension piece helps to achieve the right focusing margin. The length of the extension piece is 21 mm. Learn More
  3. ZWO D25 AR protect window
    AUD $33.00

    In Stock

    ZWO D25 AR protect window

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  4. 12V Hair Dryer + Dew Dryer with 2 speed and heat settings
    AUD $24.95

    In Stock

    Keep your telescope optics clear and ready for observation with this portable 12V hair and dew dryer, featuring two speed and heat settings for gentle, controlled airflow. Powered via a cigarette lighter plug, it's perfect for removing moisture and dew from lenses and mirrors during nighttime viewing sessions without risking damage to delicate coatings.

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  5. Celestron Moon Filter Set 1.25 inch
    AUD $89.99

    In Stock

    • Four great Moon filters in one kit—everything you’ll ever need for optimal views of the lunar surface
    • Three neutral density (ND) filters with different levels of light transmission (13%, 25%, and 50%) allow you to choose the perfect filter for your viewing conditions
    • Moon & Sky Glow filter provides high contrast views of the lunar surface and enhances observation of deep sky objects from light polluted skies
    • Aluminum filter cells provide a rigid, durable housing for the filter glass and are threaded on top and bottom for stacking
    • Kit includes a plastic carrying case with Moon map and legend for identifying the most popular lunar features
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  6. Farpoint Vixen Style Dovetail Plate for Celestron 9.25in Telescopes - 2007 Model Year or OLDER, with Armored Strip
    AUD $159.00

    In Stock

    Safely attach telescope optical tubes and accessories with Farpoint Vixen Dovetail Plate – Armored Strip – Celestron 9.25 Inch SCT (pre 2008).  This 19″ Vixen style dovetail bar features a stainless steel armored strip to prevent damage.

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  7. Farpoint Flexible Dew Shield for Celestron Nexstar 6se
    AUD $65.00

    In Stock

    Farpoint Dew Shield – Celestron 6SE SCT is a tough cover that protects optical equipment and allows for moisture-free observing sessions.

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  8. WW Astro Heated Dew Shield for 6 Inch SCT
    AUD $119.00

    In Stock

    Dew shield to prevent dew appearance and improve contrast. Easy to fit. Suitable for 6”  telescopes.

    NOTE: Sirius Optics recommends that any dew heater strap or heated dew shield be connected to a dual channel dew controller and not directly to 12V.

    This allows the user to regulate the current and temperature of the dew heater strap or dew shield. 

    The recommended control unit is the Astrozap Dual Channel Dew Controller (Product No. 124474)

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  9. AstroZap Light Shield for 16 inch Dobsonian Telescopes
  10. Orion Three-Fan Cooling System for Convex-Back Dobsonians
    AUD $139.00

    In Stock

    • Reduce the amount of time spent waiting for your big GoTo Dobsonian to reach thermal equilibrium with the Orion Three-Fan Cooling System
    • Three-fan set custom designed to fit the Orion XX14i IntelliScope, XX14g GoTo and XX16g GoTo Dobsonian primary mirror cells
    • Enjoy optimized visual performance quickly
    • Each fan boasts 33.4 CFM (cubic foot per minute) air flow to help significantly accelerate cooling of your Dobsonian telescope's optics
    • Quiet fans operate without vibrations
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