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Telegizmos Cover for Dobsonian Telescopes

Telegizmos Cover for Dobsonian Telescopes

by Telegizmos
SKU TG-TG1D
CA$97.00 - CA$258.00
CA$97.00
CA$97.00 - CA$258.00
CA$97.00
Price Match Policy!
  • Fits Dobsonians from 6" tube models to 25" truss designs
  • Multi-layer polyethylene with a fully aluminized radiant barrier surface
  • Waterproof material with double lap sewn seams for strength
  • Reduces solar heating for significantly faster telescope cool-down times
  • For temporary outdoor storage; 365 Series for more than 1-2 weeks outdoors
  • Made in Texas, USA with a 1-year warranty
1 in stock
Qualifies for FREE Shipping in Canada on orders over $500.
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Telegizmos Cover for Dobsonian Telescopes

    The Telegizmos Standard Cover for Dobsonian Telescopes provides robust, weather-resistant protection for temporary outdoor storage, with sizes ranging from the TG1D for 6" tube Dobs to the TG7D for 25" truss designs. This multi-layer polyethylene cover, made from a material originally developed for NASA as a spacecraft insulator, has a fully aluminized surface that reflects solar radiation to keep your telescope cooler during the day for faster evening cool-down. With double lap sewn seams and a 1-year materials and craftsmanship warranty, it's an essential accessory for protecting your instrument from dew, dust, and rain between observing sessions.

    NASA-Developed Radiant Barrier for All-Weather Protection

    The core of the Telegizmos Standard Cover is its advanced material, a multi-layer polyethylene with a fully aluminized surface and an embedded fibrous webbing for tear resistance. This is not Mylar; it's a durable, lightweight radiant barrier that dramatically reduces the temperature of a telescope left in sunlight. This means your scope reaches thermal equilibrium much faster when you set up to observe.

    The material is waterproof and the seams are double lap sewn for strength, protecting against rain and dew. On the truss Dob covers (TG5D, TG6D, TG7D) the connection seams are double-lapped and micro-stitched to resist moisture penetration.

    Sizing for Vertical-Park Dobs (TG1D-TG4D)

    These covers are designed for tube and truss Dobsonians that are parked from vertical to 60 degrees down. They fasten with a built-in drawstring. These covers can fit several other scope sizes: check your set-up dimensions against the stated cover measurements.

    • TG1D: Fits 6" and 8" f/5 tube Dobs with a 62" circumference and 53" height.
    • TG2D: Fits 10" and 12" tube Dobs with a 90" circumference and 69" height.
    • TG3D: Fits 12" and 14" truss Dobs with a 94" circumference and 78" height.
    • TG4D: Fits 16" and 18" truss Dobs with a 115" circumference and 90" height.

    Sizing for 18" to 25" Horizontal-Park Truss Dobs (TG5D-TG7D)

    For large truss Dobsonians parked horizontally, Telegizmos offers a series of fitted covers. These feature four tapered panels for the truss section and a box-shaped section for the rocker box, and the rocker section is open at the bottom with a drawstring. These models include a 1" web strap with a heavy-duty adjustable cam lock for additional cover securing or attachment to hold down weights.

    • TG5D: For 18"-20" f/4.5 truss Dobs, with a 60" truss length and 33" square rocker section.
    • TG6D: For 18"-20" f/5 truss Dobs, with a longer 72" truss length.
    • TG7D: For 24"-25" f/5 truss Dobs, with an 89" truss length and a 46" x 34" rocker section.

    Standard Cover vs. 365 Series: Choosing the Right Protection

    Telegizmos offers two distinct series of covers, and choosing the right one depends entirely on your storage plans. The 365 Series is built for continuous, 24/7 outdoor exposure, pairing an outer acrylic-coated woven polyester shell with an inner solar-material radiant barrier liner. It is the correct choice for any telescope that will live permanently outdoors.

    The Standard Cover, described here, is designed for temporary outdoor storage only. It is intended for temporary outside storage, not more than occasional, short-term exposure; for more than 1 to 2 weeks of continuous outdoor exposure, choose the 365 Series.

  • How do I choose the right size Telegizmos cover for my Dobsonian?

    First, identify your telescope's type (tube or truss) and its typical parked position (vertical or horizontal). For vertical-park scopes, check your set-up dimensions against the stated circumference and height of the TG1D, TG2D, TG3D and TG4D. For large horizontal-park truss Dobs, measure these: the combined tube and mirror box, the top of the mirror box to the ground with the scope horizontal, the width of the mirror box, the width of the base, the diameter of the UTA and the total vertical height. Compare these with the TG5D, TG6D and TG7D specs.

    Can I leave my telescope outside permanently with this Telegizmos Standard cover?

    No. The Standard Series cover is intended for temporary outside storage only. For permanent or long-term outdoor storage, more than 1 to 2 weeks of continuous exposure, you must use the TeleGizmos 365 Series cover, which is specifically designed and warranted for 24/7, 365-day exposure.

    What is the difference between a Telegizmos Standard cover and a 365 Series cover?

    The primary difference is the intended use and material construction.

    • Standard Cover: Made of a multi-layer polyethylene material with a fully aluminized surface and embedded fibrous webbing. It is light and designed for temporary outdoor storage; for more than 1 to 2 weeks of continuous exposure, use the 365 Series.
    • 365 Series Cover: A dual-layer system with an acrylic-coated woven polyester outer shell and the solar radiant material as an inner liner. It is designed and warranted for continuous 24/7, 365-day outdoor exposure.

    How does the Telegizmos cover protect my 16" truss Dob from heat during the day?

    The Telegizmos cover for a 16" truss Dob parked vertical to 60 degrees down (model TG4D) has a highly reflective, fully aluminized surface. This acts as a radiant barrier, keeping a scope left in sunlight much cooler than if it were uncovered and allowing a much faster cool-down once night falls.

    Will condensation form under my Telegizmos cover?

    It can. While the material is waterproof and protects from rain and dew, no cover can completely prevent condensation from forming on the telescope itself, especially in humid climates or during rapid temperature drops. The cover traps air inside, and if that air is moist, the moisture can condense on the cool surfaces of the scope as the night gets colder. It is always best practice to ensure your telescope is dry before covering it.

    My Dobsonian is modified. Can I get a custom Telegizmos cover?

    Yes. TeleGizmos can modify its standard truss Dob covers to fit a modified scope; for example, it added 10" of extra rocker height to a TG5D. For a modified or custom cover, contact us with your scope's measurements.

  • Type Standard covers for Dobsonian telescopes
    Truss Dob covers (TG5D, TG6D, TG7D) Four tapered panels on the truss section, box-shaped rocker section open at the bottom with a drawstring, double-lapped micro-stitched seams, 1" web strap with a heavy-duty adjustable cam lock
    Fit: TG1D 6" and 8" f/5 tube Dobs, vertical to 60 degree down park: 62" (157 cm) circumference, 53" (135 cm) height
    Fit: TG2D 10" and 12" tube Dobs, vertical to 60 degree down park: 90" (229 cm) circumference, 69" (175 cm) height
    Fit: TG3D 12" and 14" truss Dobs, vertical to 60 degree down park: 94" (239 cm) circumference, 78" (198 cm) height
    Fit: TG4D 16" and 18" truss Dobs, vertical to 60 degree down park: 115" (292 cm) circumference, 90" (229 cm) height
    Fit: TGLB-16V Meade LightBridge 16", vertical park: Dimensions not published by TeleGizmos
    Fit: TG5D 18"-20" f/4.5 truss Dob, horizontal to 90 degree down park: Truss length 60" (152 cm), rocker box length 33" (84 cm), total length 93" (236 cm); rocker section 33" (84 cm) square; truss 25" (64 cm) diameter at the UTA tapering to 33" (84 cm) at the rocker box
    Fit: TG6D 18"-20" f/5 truss Dob, horizontal to 90 degree down park: Truss length 72" (183 cm); other components the same as the TG5D
    Fit: TG7D 24"-25" f/5 truss Dob, horizontal to 90 degree down park: Truss length 89" (226 cm), rocker box length 34" (86 cm), total length 123" (312 cm); rocker section 46" (117 cm) height x 34" (86 cm) length; truss 32" (81 cm) diameter at the top of the UTA tapering to 46" (117 cm) at the rocker box
    Series Standard TeleGizmos cover (temporary outdoor exposure)
    Material TeleGizmos solar radiant barrier material: multi-layer polyethylene with a fully aluminized surface and embedded fibrous webbing (not Mylar)
    Seams Double lap sewn
    Recommended use Temporary outside storage; for more than 1 to 2 weeks of continuous outdoor exposure, use a 365 Series cover
    Made in Texas, USA
    Warranty 1 year, materials and craftsmanship

    • Telescope cover

      × 1

    • 1" web strap with adjustable cam lock (TG5D, TG6D, TG7D)

      × 1

  • Telegizmos Warranty