Next is the mirror box, and it is as the name implies, where the main mirror is located. Next, you install the truss poles onto 4 locations on the mirror box. I will list them here. This means that the coatings will last much longer and they will stay very reflective. The red dot finder included projects a simple red dot onto a glass screen, which you look through and center the target you wish to view in the red dot. A solid tube telescope is where the tube that holds the mirrors was completely solid, typically metal or in some cases wood. 1 Review(s) | Add Your Review. The upper tube assembly sits on top of the truss poles, and it holds the secondary mirror, finderscope, and focuser of the telescope. $949.99. FREE ground shipping. We tested their Generation II 16-inch option, which has been upgraded recently to improve its mechanics. It took me a while to arrive at this setup, but believe me, if you get this telescope, you NEED good eyepieces as it will make very apparant the … If you use the same poles on the same locations you can reasonably maintain collimation when taking down and setting the telescope back up. Then comes collimation of the mirrors. For eyepieces I have an Explore Scientific 68 degree 24mm, Orion Stratus 17 & 13mm, Meade UWA 5.5, and a televue 2x barlow. A 254 mm mirror collects more than 1,500 times as much light as the naked eye. The poles make up the bulk of the telescope’s length but are quite small. Deluxe Red-dot finder. The truss poles come in pairs, so they stay together reasonably well in transport. There has not been a true first light, Just visual inspection and quick collimation testing. The upper tube assembly is also very light as it is almost completely hollow, while still being quite strong. Deluxe Red-dot finder. The … The scope came extremely well packed in a huge 52kg box. Fans also have the advantage of blowing away any would-be dew that could land on the mirror surface, ruining views. *Rankings and ratings are calculated by comparing all telescopes on the same price range, in this case, $600 to $800. A red dot finder is useful to use on a telescope to locate and move to targets in the night sky. The truss poles are the main feature in a telescope like this. Some of the accessories can improve your observing experience greatly, so I will list them here. Explore Scientific 10" (254mm) Truss Tube Dobsonian. After you collimate, you are all good to go. Availability: In stock. As the large, heavy tube is ditched for eight poles, the truss design allows this telescope to be FAR lighter and FAR smaller than its alternatives. A shroud is a large piece of fabric that goes around the truss poles and blocks any light that would ruin views. Here I will go over the whole process of operation needed to set up this telescope, and the front collimation feature. The truss-style is also very compact and can shrink down to an incredibly small form factor which makes this telescope east to move around. Logan Nicholson is an amateur astronomer from Melbourne and won young astrophotographer of the year runner up in 2018, which got him featured on Cnet, BBC, MNN, NationalGeographic, and DailyMail. The mirror box is where the altitude bearings attach to, as they pivot up and down. This means that there is no tube at all. Explore Scientific Product #: DOB1045-00. Here I will go over the whole process of operation needed to set up this telescope, and the front collimation feature. Not a terrible focuser and in my opinion unless something is wrong, you do not need to upgrade it. Two large radial fans for fast thermal equilibrium. The poles are attached with easy to use thumbscrews. Details on planets and deep sky objects will be visible even for inexperienced observers. These factors make truss telescopes extremely portable and lightweight. Truss poles replace a typically very heavy metal tube which becomes impractical for large telescopes, and they make the telescope far more portable. The power of a 10-inch dobsonian telescope (254 mm) - YouTube You can mount the altitude bearings at different positions to take into account different eyepiece weights so the telescope does not become unbalanced. Our renowned experts have reviewed 100+ telescopes and have made a rank list based on budget and quality. Luckily Explore Scientific make larger Dobsonians, up to a staggering 20 inches. The main factor that makes this 10-inch Dobsonian different is that it is a truss telescope. In conclusion, I highly recommend this 10-inch Dobsonian to anyone who has the budget for it as it is an excellent all-round performer. 1270mm Focal length f/5. At a relatively cheap price, it is sure to be a great choice for anyone wanting to start getting into deep sky observing. At this point the actual assembly is complete. In my opinion, something like a Telrad finder is much improved, but a red dot finder gets the job done without being extremely heavy. A solid tube telescope is where the tube that holds the mirrors was completely solid, typically metal or in some cases wood. The Explore Scientific 10” Dob, being a truss tube has some fairly major changes in operation to other telescopes, but also includes a novel form of collimation. Won’t lig. The Dobsonian telescope design was created by John Dobson for an affordable way to get big aperture in an easy to use telescope design. My Saga:Explore Scientific 10" Gen II Truss Tube Dob - posted in Reflectors: June 18, 2018 I ordered the 10 ES Gen II Truss Tube Dob directly from Explore Scientific with a 10% discount, $699.99 - $69.99 = $630.00 I opened a web account with ES and placed the dob in my cart.