{"product_id":"used-glatter-tublug-collimator-with-2-laser","title":"Used Howie Glatter TuBlug Collimator with 2\" 635nm Collimation Laser","description":"\u003cdiv align=\"justify\"\u003e\n\u003cp\u003eThis is a Glatter tuBlug and laser set in excellent condition.  This is \u003cstrong\u003eTHE BEST COLLIMATION EQUIPMENT\u003c\/strong\u003e money can buy, and this one is yours at a nice discount.  Of course, the laser works, and the gear itself is unmarked - no dings, sleeks, scratches.  The laser fits \u003cspan style=\"text-decoration: underline;\"\u003ePERFECTLY\u003c\/span\u003e into the tuBlug collimator - a smooth snug slide, with no wobble, no play whatsoever - just as you'd expect from an instrument at this level of quality.    \u003c\/p\u003e\n\u003cp\u003eNew, this combo would be \u003cspan style=\"text-decoration: underline;\"\u003e$570\u003c\/span\u003e.  Save big on this used one!  \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eHowie Glatter tuBlug \u003c\/h3\u003e\n\u003cp\u003eThe Howie Glatter Tublug is a great product and one that has significant advantages over the BLUG:\u003c\/p\u003e\n\u003cp\u003eFirst, the Tublug places the return shadow of the reinforcement tab at a very convenient, easy-to-see location OUTSIDE the focuser rather than at the inside of the focuser requiring you to peer between the truss poles in order to see the shadow. (Of course, the BLUG is not very useful at all with \"solid tube\" dobsonians!)\u003cbr\u003eSecondly, many people are a bit cautious about having to insert the BLUG into the inside of the focuser since there is always the remote possibility that you may drop it onto your primary mirror while attempting to insert it into place.\u003c\/p\u003e\n\u003cp\u003eFor these reasons many \"truss pole\" dobsonian owners choose to go with the Tubllug. the only disadvantage to the Tublug is that iit will force you to part with a little bit more of your hard-earned savings!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe tuBlug\u003c\/strong\u003e™ is the answer for those who want to Barlow-collimate their primary from the back of the scope, but have a solid tube Newtonian, or can't be bothered to slide their shroud up.\u003c\/p\u003e\n\u003cp\u003eIt's a Blug (Barlowed laser plug), containing its own lens and shadow screen that fits within a side cut-out tube, the combination being known as a tuBlug. Like the collimator self-Barlow attachment or the Blug, it uses the Barlowed laser principle to project a silhouette shadow of the primary mirror collimation mark back onto its white screen, where the shadow is centered to collimate the primary. The tuBlug comes in 1¼\" and 2\" sizes, fits any focuser, and can be used with any well-centered laser collimator.\u003c\/p\u003e\n\u003cp\u003eUnfortunately, the standard\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.collimator.com\/blug.htm\"\u003eBlug\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ewhich fits to the inner end of the focuser drawtube inside the telescope, can not used as a tuBlug because it must necessarily have a shoulder which will seat it squarely against the end of the drawtube. The shoulder will be larger than eyepiece diameter, which will prevent the Blug from fitting in the side cut-out tube.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e* Use with a regular laser collimator in single beam mode to perform barlowed laser Newtonian primary mirror alignment on closed tube reflectors.\u003c\/p\u003e\n\u003cp\u003e* The Howie Glatter TuBLUG is inserted into the focuser tube and does not attach to the collimator,\u003c\/p\u003e\n\u003cp\u003e* Rubber O-ring retainment base, matte-white 45 degree face and anti-reflection coated Barlow lens mounted in a central axial hole.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe Howie Glatter TuBLUG is easily visible from primary adjustment position and can be turned 180 degrees to face the front and has a cut-out.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e2\" 635nm Collimation Laser\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e* Single red beam operates at 635nm for twilight use. * The Howie Glatter Laser Collimator incorporates a solid state laser diode that does not fade or change with time and use.\u003c\/p\u003e\n\u003cp\u003e* Factory-aligned to 15 arc-seconds providing 0.1 inch accuracy at a distance of 20 feet,\u003c\/p\u003e\n\u003cp\u003e* The Howie Glatter Laser Collimator is shock resistant to keep its alignment - even when dropped.\u003c\/p\u003e\n\u003cp\u003e* Includes 123A lithium battery, 1mm aperture stop, case, and instructions.\u003c\/p\u003e\n\u003cp\u003eThe laser collimator is a tool which enables precise adjustment of the position and alignment of telescope optics, so as to obtain the best possible image contrast and resolution. Inside is a solid-state laser diode, which emits an intense laser beam exactly along the central axis of the cylindrical collimator body. The beam acts as a \"reference line\" from which alignments are made. The most important specification for a laser collimator is the accuracy and stability of the laser beam alignment with the cylindrical axis of the collimator body. The alignment tolerance on a Glatter collimator is fifteen arc seconds for single beam mode, and one arc minute for the holographic mode. In order to ensure maintenance of this level of accuracy, each of his collimators are tested for resistance to shock. Howie Glatter designed them to withstand a shock equivalent to dropping from eyepiece position on a big dobsonian, up the ladder, without alteration of laser alignment. Most other laser collimators cannot withstand this kind of accident without loss of alignment.\u003c\/p\u003e\n\u003cp\u003eOptional Holographic attachments are available to fit all Howie Glatter lasers.\u003cbr\u003e\u003cbr\u003eThese optional holographic attachments screw into the laser aperture and have a white screen front surface. They contain an optical element that diffracts most of the laser light into a diverging symmetrical pattern around the central beam. The projected pattern is useful for centering optical elements by making it symmetrical with the edge of the optic.\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e The most versatile pattern is a 10x10 line square grid pattern of illuminated lines. It covers a wider angular range (21 degrees) than any other holographic collimator, which allows direct centering of f\/ 2.7 to f\/ 35 optics. This pattern is recommended for general use because it can be used with the fastest telescopes likely to be encountered. A rectilinear grid pattern gives the highest accuracy and sensitivity for centering circular optics of arbitrary size.\u003c\/li\u003e\n\u003cli\u003eA cross-hair and circle “scope” pattern is available that spans 10 degrees. \u003c\/li\u003e\n\u003cli\u003e A nine-concentric circle pattern is available that spans 10 degrees and will reach to the edge of f\/ 5.7 optics. \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Glatter","offers":[{"title":"Default Title","offer_id":49612713492739,"sku":"U2609-WB-tuBlug","price":350.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/milehighastro.com\/products\/used-glatter-tublug-collimator-with-2-laser","provider":"Mile High Astronomy","version":"1.0","type":"link"}