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Telegizmos 365 Series Cover for Refractor on ALT/AZ or EQ Mount

Telegizmos 365 Series Cover for Refractor on ALT/AZ or EQ Mount

by Telegizmos
SKU TG-T3R4
$144.00 USD - $184.00 USD
$144.00 USD
$144.00 USD - $184.00 USD
$144.00 USD
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  • Designed for continuous 24/7, 365-day outdoor exposure
  • Dual-layer design with radiant barrier liner and woven polyester outer shell
  • Outer shell resists water penetration in a 40 PSI spray test
  • Sized for 3" to 6" refractors with tube lengths up to 60"
  • Made in Texas, USA with a 1-year warranty covering continuous outdoor use
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Telegizmos 365 Series Cover for Refractor on ALT/AZ or EQ Mount

    The Telegizmos 365 Series Cover provides continuous, year-round protection for your refractor, engineered with a dual-layer system for full-time outdoor storage. The outer shell is an 11 oz/sq yd acrylic-coated woven polyester that resists moisture penetration in a 40 PSI spray test and has a tensile strength of over 325 lbs/in. A 6 mil inner radiant barrier liner protects your equipment from radiant heat build-up, and the 1 year labor and material warranty includes continuous 24/7 outdoor exposure.

    Sizing for 3" to 6" Refractors up to 60" Long

    These covers are for refractors on German equatorial or alt-az mounts, in three sizes. The T3R4 is for 3" to 4" refractors on alt-az mounts and GEMs with tube lengths up to 30", while the T3R5 fits 4" to 5" refractors up to 45" long on large GEMs. For the largest setups, the T3R6 is designed for 5" to 6" refractors with tube lengths up to 60" and has a major height of 60". Compare your set-up with these sizes.

    The 365 Series System: Dual-Layer Protection for 24/7 Outdoor Use

    The 365 Series is made for continuous 24/7, 365-day outdoor exposure. It pairs an acrylic-coated woven polyester outer cover with an inner solar radiant barrier liner, and its warranty covers continuous outdoor exposure. TeleGizmos tested it for a year in the desert southwest, the Florida Keys, Colorado at 8000 feet and the Texas Hill Country.

    • Radiant Barrier Liner: The inner 6 mil liner is made from TeleGizmos' solar material, which protects your equipment from radiant heat build-up.
    • Secondary Water Barrier: This inner liner also adds a second barrier against water penetration.

    A 40 PSI Water-Resistant, High-Tensile Outer Shell

    The primary defense against the elements is the cover's outer shell, an American-made, high-count woven polyester weighing 11 oz/sq yd. It showed no moisture penetration in a spray test with a 1/2 in concentrated stream at 40 PSI. It has a tear strength of more than 30 lbs warp and 25 lbs fill, and less than 1% shrinkage or stretch to keep a proper fit.

  • How do I choose the right Telegizmos 365 Series cover for my refractor?

    Compare your refractor and mount with the listed sizes: the T3R4 for 3"-4" refractors on alt-az mounts and GEMs, tube length up to 30"; the T3R5 for 4"-5" refractors on large GEMs, tube length up to 45"; the T3R6 for 5"-6" refractors on large GEMs, tube length up to 60", major height 60".

    Can the Telegizmos 365 cover really stay on my telescope outside all year?

    Yes. The 365 Series is specifically designed and warranted for continuous 24/7, 365-day outdoor exposure. It pairs a UV and mildew resistant outer cover with a radiant barrier liner, and TeleGizmos tested it for a year in the desert southwest, the Florida Keys, Colorado at 8000 feet and the Texas Hill Country.

    I have a 4" apochromatic refractor on a large EQ mount; which Telegizmos cover do I need?

    A 4" refractor falls in two ranges: the T3R4 (3"-4" refractors on alt-az mounts and GEMs, tube length up to 30") and the T3R5 (4"-5" refractors on large GEMs, tube length up to 45"). Compare your tube length with these sizes.

    Will this cover protect my telescope from the summer sun in a hot climate?

    Yes. The inner liner of the Telegizmos 365 Series cover is a 6 mil solar material radiant barrier that protects your equipment from radiant heat build-up, and TeleGizmos tested the 365 Series for a year in places including the desert southwest.

    How water resistant is the Telegizmos 365 material?

    The outer material has a hydrostatic rating of more than 25 in and showed no moisture penetration in a 40 PSI spray test, and the inner liner adds a second barrier to water. Condensation can still form under any cover in high humidity or with rapid temperature drops.

    What is the difference between this 365 Series and a standard TeleGizmos solar cover?

    Standard TeleGizmos covers use the multi-layer solar material alone and are for temporary outside storage. The 365 Series adds an acrylic-coated woven polyester outer cover over that solar material as an inner liner, and is made and warranted for continuous 24/7 outdoor exposure.

  • Type 365 Series cover for refractors on alt-az or German equatorial mounts
    Fit: T3R4 3"-4" refractors on alt-az mounts and GEMs: Tube length up to 30" (76 cm)
    Fit: T3R5 4"-5" refractors on large GEMs: Tube length up to 45" (114 cm)
    Fit: T3R6 5"-6" refractors on large GEMs: Tube length up to 60" (152 cm), major height 60" (152 cm)
    Series 365 Series (continuous 24/7, 365-day outdoor exposure)
    Outer cover High-count, acrylic-coated woven polyester, American made, 11 oz/sq yd (ASTM D3776)
    Inner liner TeleGizmos solar material radiant barrier: polyethylene/Astrolar fiber, multi-layered, 6 mil
    Outer tensile strength More than 325 lbs/in warp, more than 265 lbs/in fill (ASTM D5034)
    Outer tear strength More than 30 lbs warp, more than 25 lbs fill (ASTM D2261)
    Water resistance (outer) Hydrostatic more than 25 in (AATCC 127); spray rating 90 (AATCC 22); no moisture penetration in a 40 PSI spray test, 1/2 in concentrated stream
    Colorfastness (outer) Grade 4 (AATCC 8)
    Exterior weather rating (outer) 5 years
    Shrinkage or stretch (outer) Less than 1%
    Made in Texas, USA
    Warranty 1 year from date of purchase, labor and material, including continuous 24/7 outdoor exposure; transferable; proof of purchase required; normal wear and tear excluded
    Holds T3R4, 3"-4" refractors on alt-az mounts and GEMs, T3R5, 4"-5" refractors on large GEMs, T3R6, 5"-6" refractors on large GEMs

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