![]() ![]() For a smoother more natural look more pixels are required, but not too many because if you use more pixels than are necessary to achieve round stars the image is 'over-sampled’. Too few and the image will be 'under-sampled’, the stars will appear blocky and angular'. Short focal length telescopes and ideal seeing conditions provide the smallest stars, longer focal lengths and less favourable skies produce larger stars.įor a star to retain it's round shape when viewed on your screen or photograph it’s diameter must cover a sufficient number of pixels. Assuming high quality optics, the diameter of the point of light is determined by the telescope’s focal length (longer focal lengths result in larger star diameters) and the sky's ‘seeing’ conditions (atmospheric dispersion spreads the point of light, making it larger). Good optics, and just about bullet proof.A telescope focuses a star as a round point of light. Someone who has been observing for years be happy with this telescope? Well they could be, if they wanted to put a little time into someīeginner be happy with this ‘scope? Sure. ![]() Least, it is just amazing what just a little bit of money can get you in That sentence alone gives you a clue about whether this ‘scope is Very excited about this being one of the club telescopes now. Plan to replace the nylon bearings with Magic Sliders, although, now, the Silicon spray to the baseboard, and the nylon bearings on the ground We fixed this by inserting two c.d.’s over the center bolt and Tough to move, and alot of static friction to overcome. The azimuth motions, however, were very stiff. It has good altitude motions right out of the box. The base is typical for this lineage of ‘scopes. Is large enough to locate objects for a telescope of this aperture. Very impressed with the optical quality of this telescope. That is in my personal ten inch telescope. I don’t know where the tolerance problem lies, but, theseĮyepieces both fit and work great in my J.M.I. I did get great views with this combination. Once I got it inserted, I found that the focuser did not haveĮnough back focus without locking the eyepiece in only halfway. My American built two-inch eyepieces do not fit well in thisĥ0 mm Plossl fits with great difficulty. With this ‘scope, I must mention something that has troubled me a bit. We have achieved best images using a partial set of Orion Epic ED The included Barlow even allows you to use this as a medium powerīeen negligible for such a short focal ratio. Of including the 32 mm became apparent when using this ‘scope for deepĪbsolutely stunning deep sky views. All have performed well, for such a short focal Have used all kinds of different eyepieces in it. The “Eyes on The Sky” astronomy club) I would probably look into ways If it were my personal telescope, (this telescope was purchased for I’m sure it contributes to a longer cool down period. Heavy steel plate that blocks off the air flow to the back of the primary. One thing that I do not like about the new mirror cell, is the It works fine, and can be turned by hand now. Tensioned and loosened with a screwdriver until it got “broken in” aīit. One of the lock down screws on the unit that we received had to be The collimation, and lock down screws work well. There are diffraction spikes, but they are much less noticeable. It is just that the ones Guan Sheng were using had thick vanes that ![]() Not that there is anything wrong with using three vane spiders. Those six diffraction spikes from the three vane spider are gone. Mechcanically, because of how much better this spider holds This is a great mechanical, as well as optical improvement. Improvement, to my mind at least, is the four-vane spider. That Guan Sheng is using now, are from what they were just a few years The telescope out of the box, was how different some of the components The total price, delivered to your door, is $599.00. The telescope also has the now familiar spring tensioning system. With most lower priced Dobsonian telescopes, the base is particle orīearings (both altitude, and, azimuth) appear to be nylon. The focuser is a fairly accurate two-inch aluminum rack and pinion Also included is a decent 8x50 straight through finder. Not the newer generic type Chinese ones with plastic barrels. Particular package includes a 32mm plossl, a 9mm plossl, and an Omcon 2xĪppear to be identical to the Sirius line offered by Orion. Steel tube Newtonian reflector 10-inch f/5 optical system offered by Guan Rack-and-pinion focuser with 1.25” adapter, moon filter, and anīe a review of the Antares XL 10 Dobsonian telescope offered by, and And 9mm Plossl eyepieces, 8x50 finderscope, 2”
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