Joined in 2023 
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63 About this deal
There are so many specialty accessories in the astronomy space that are completely unnecessary (I’m looking at you, “telescope gloves”) and we generally tell you to save your money and spend it on gear that is truly going to make a difference on your viewing experience, but that’s not the case here. Safety equipment does matter and is going to save you money long-term by increasing the longevity of your device. Telescope covers vs Bags
Other measurements such as the PV and RMS are important too. With these measurements, the lower the number the better as it shows less curvature on the lens. The flatter an optical lens, the better it will perform. The PV rating (Peak To Valley) is a measurement from the highest point (Peak) to the lowest point (Valley). From this we get the RMS (Root, Mean, Square). This is a similar figure to the PV and measured exactly the same way. The RMS is basically an average height difference from the PV so again, the lower the better. As you can see form the example below, we measured an RMS of just 0.027 wave which is a very good value. A good cover must be waterproof and impermeable. Even if you will keep the telescope indoors, there are always the occasional drops flying through the window or worse, unidentified moisture or leaks. The silver coating you will see in high-quality covers serves two purposes. It reflects UV rays to keep them away from the mirrors, and is thermally stable, meaning it prevents the interior and the telescope from heating up. You don’t want your telescope exposed to too much heat because this weakens the optics glue, messing up the mirror/lens alignment, and it makes it so you have to wait longer for the telescope to acclimate to the weather every time you use it to get proper views. Are telescope covers worth the money? Originally developed for NASA as a spacecraft insulator, the aluminized multi-layer polyethylene TeleGizmos standard solar cover material is strong, light, tear and puncture resistant, and much more durable than Mylar. It is even washable. TeleGizmos covers consist of a polyethylene base layer, a reinforcing fiber mesh layer, a layer of pure reflective aluminum, and another layer of clear polyethylene with double lap sewn seams for strength. Each cover has a material strength equal to that of a multi-layer lightweight tarp. The aluminized surface reflects away the sun's energy to keep your scope cooler in the daytime. It is waterproof to keep condensation from building up on your scope at night. It stays flexible at temperatures well below freezing and is unaffected by summer sun and heat. The bag-like scope cover fastens securely to your scope by cinching up the built-in drawstring of the opening at the bottom of the cover. The HABOPET cover also claims to be fully waterproof and UV-reflective. As for waterproof, it does look like it meets expectations, but for the reflectiveness, I have my doubts. The coating seems a bit thin and I found no mention of it being thermally stable anywhere in the specifications so I’m not sure it can keep the telescope cool under sunny weather.Orion offers telescopes for every level: Beginner, Intermediate, Advanced, and Expert. From our entry level beginner telescopes for amateur astronomers to our Dobsonian telescopes to our most advanced Cassegrain telescopes and accessories, you can find the best telescope for you. Because we sell direct, we can offer you tremendous value at a great price. Not sure how to choose a telescope? Orion's Telescope Buyer's Guide is a great place to start. A year of strenuous testing in some of the harshest outside environments, including the desert southwest, Florida Keys, Colorado @ 8000 feet and the Texas Hill country has proven the 365 Series to be capable of handling all types of weather on a continuous 24/7, 365 basis. These covers have been tested in the harshest of environments and have proven to be extremely durable and resistant.
It is true there’s nothing too special about telescope covers and an old sheet can still cover it from dust, but all the other features do make a difference long term, especially if you plan to keep it in a room with questionable conditions like a shed or the garage.
Celestron 925SCT Padded Telescope for Optical Tubes
Since 1975 Orion Telescopes & Binoculars has been offering telescopes for sale direct to customers. Now an employee-owned company, we pride ourselves on an unswerving commitment to best quality products, value and unmatched customer care. Our 100% satisfaction guarantee says it all. For refractor telescopes, the length is going to be very close to the telescope’s focal length so just knowing that will tell you if the cover will fit. You can also find a telescope cover for specific telescope builds such as 12-inch Schmidt-Cassegrain telescopes on alt-az mounts , 5- to 6-inch Equatorian Refractors, and 10- to 12-inch f/5 Newtonians on German Equatorial Mounts. Buy a tripod coverto protect the legs of your stand from rust, dust, and UV radiation, or get a Celestron telescope cover to match your Celestron rig. As mentioned above, I personally own the largest version of this cover and use it for my Celestron Advanced VX 9.25″ SCT. It’s been great.
Orion binoculars are known for quality optics at a great price. We offer binoculars for every viewing interest, including astronomical binoculars, compact binoculars, waterproof binoculars, birding binoculars, and sport and hunting binoculars. It comes in two sizes, a 39″ (990mm), and a 59″ (1500mm). That is the length of the tube, so make sure to know the dimensions of your device before buying. The price difference is minimal though, so if you have doubts, just go with the bigger model. Once the Zygo test report has been completed, the optical alignment is thoroughly tested and tuned to ensure they are spot on before they leave us. If you are looking for the most premium cover to protect a telescope worth several hundred or even thousands of dollars, Orion has the solution for you.
Altair Telescope Cover Extra Large
The only issue I have with this cover is the price. It is high. But is it worth it? well, I believe that really is up to you. Personally, I would only get it for a very expensive telescope, but if yours cost the same or slightly more than the cover then there are better ways to spend that money. The Orion cloak cover all the same features you would expect. Waterproofing, sunlight reflection, thermal stability, etc. But the other covers also have most of those features, so what’s the difference? At Rother Valley Optics, one thing we pride ourselves on is customer service and quality of our equipment. When we test your telescope, we will ensure that it is of the highest quality otherwise, we will reject the scope under our strict quality control and test another model for your peace of mind. One of the main values to look at when testing a refractor is the Strehl ratio. The higher this number, the higher quality lens you have. At Rother Valley Optics, we will guarantee the highest possible Strehl ratio for your telescope. We will aim to provide 0.95 Strehl or higher on Takahashi, RVO Horizon, William Optics and many more! Generally, the higher the Strehl ratio, the lower the Astigmatism and Coma meaning a better image quality from your instrument.
Orion offers telescopes for every level: Beginner, Intermediate, and Advanced. From our entry-level beginner telescopes for amateur astronomers to our Dobsonian telescopes to our most advanced Cassegrain telescopes and accessories, you can find the best telescope for you. Because we sell direct, we can offer you tremendous value at a great price. TGN8: For GEM mounted scopes up to 46" long and 13" diameter, 57" major height - LXD55/75 SN10, SN8 with Dew Shield The advantage of bags and cases is they take less space and reduce the risk of someone or something accidentally pushing it and potentially breaking something.Orion's telescope and astrophotography accessories will enhance your telescope enjoyment without breaking the bank. Expand your viewing experience with accessories ranging from moon filters to power-boosting Barlow lenses to advanced computerized telescope mounts. Capture breathtaking photos with our affordable astrophotography cameras. And when you're stargazing, Orion's telescope cases and covers, observing gear, red LED flashlights, astronomy books and star charts will make your observing sessions more convenient, comfortable and meaningful. The inner liner radiant barrier provides radiant heat protection, effectively protecting your equipment from radiant heat build up. Additionally, as a second inner liner it provides additional protection from water penetration.
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