![]() It also makes it easier to tweak the focus as atmospheric conditions change. There is a second dial that provides a 10:1 speed reduction that allows for very precise focusing. ![]() ![]() The focuser has a high-speed knob that moves the eyepiece to the focus zone range quickly. I have used a 2” eyepiece with a 2” 2X Barlow, total weight of around 2.5 pounds, with no problems. The Apertura AD focuser is very smooth and handles large, heavy eyepieces very well. Many competitive models, such as the Orion SkyQuest XT series, Sky-Watcher Classic, and Flex-Tube series, have single-speed focusers. The mount fits nicely beside it, leaving the front passenger seat open for an observing buddy.Īll three Apertura AD models come with a 2-inch two-speed focuser, which includes a 1.25” adapter. The photo shows the AD12 optical tube in the back of my 2018 Nissan Rogue. Most compact SUVs will handle this quite well. If you are considering the AD12, measure to be sure you can fit it in your car. The Apertura AD12 is typically an upgrade scope. An aperture of 8 or 10 inches can show you a lot and, for many people, will be their lifetime large scope. The 8” and 10” optical tubes fit easily across the back seat of most cars, in many trunks, or the back of an SUV. AD8 and AD10 are very popular with first-time buyers. The Apertura AD series includes the 8 inch F5.9, 10 inch F4.9, and 12 inch F5 models. In visual astronomy, the aperture is king, and the Dobsonian style of telescopes provides the most aperture per dollar. The larger the mirror, the more light it gathers, the finer the detail that can be resolved, and the dimmer the targets that can be observed. The accessory set represents an outstanding value for first-time owners or experienced observers looking for an upgrade.Īperture is the measure of the size of the mirror. The optical tube provides excellent images of the Moon, planets, and deep sky objects. The Apertura AD series presents a terrific value. (A cheshire sight tube/collimating eyepiece is more accurate, believe it or not and a star-test collimation, while difficult to learn, can result in perfect collimation.) The biggest difference will come down to price, altitude bearing style, and perhaps most importantly, availability. ![]() You could buy a battery powered fan for your dob second-hand if that’s something you really wanted out of the Apertura AD dob and there’s better ways to collimate than by using a laser collimator. They have red dot finders instead of optical finderscopes, though.Įach of these dobsonians are much more alike than unlike one another they all have the same apertures and focal lengths, they all have the same high quality optics, and they all have inter-compatible accessories. But they have excellent large altitude bearings and the base can be broken down and packed flat. Explore Scientific FirstLight: A bit of an “odd one out.” These have somewhat strange focuser mechanisms and the 6” has an oversized mirror support.This can be useful when transporting a telescope in a small car it can be the difference between stuffing the tube in the trunk and the base in the back seat, or stuffing the tube in the back seat and the base in the front passenger seat and having no passengers at all. SkyWatcher FlexTube: Same tension bearings as Classic, but with collapsible tube gimmick to allow you to save about 13” of vertical space when transporting.SkyWatcher Classic: Highly comparable to Apertura AD series, except with inferior tension bearings and fewer accessories.Red dot finders instead of optical finderscopes. Orion SkyQuest: Generally a little overpriced.The Apertura AD series Dobsonians are some of the best in their category, but there are other Dobsonians with equally good optics worth looking into, each with different sets of accessories and prices.
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