helical focuser for newtonian


by Buback Nov 7, 2011. Shipping costs. $48.26. This usually works, but not always. Limited Time Sale Easy Return. Your accessories will remain right where you want them. Secondary Mirror (2.5" Minor Axis) with Astrosystems Holder (Pre-owned) Add to cart. It has zero play in it - unlike the cheap 1.25" rack-and-pinion focusers supplied on many entry-level scopes - but fine adjustment is a bit difficult to achieve and focusing by twisting the eyepiece can be a bit unusual. Description: Premium 2" Dual Speed Low Profile Crayford Focuser for Newtonian/Dobsonian reflector telescopes (model FOC2CLP) Made by Long Perng (same product as Orion focuser), a leading manufacturer of premium telescopes and accessories. By using our shop you agree to the use of cookies. Sharper focused planets via the helical mechanism. Once the helical focuser is attached, simply turn the oversized focusing knob - which you can control easily even with gloves on in winter. Many simple helical focusers have the disadvantage that they rotate during focusing, which means that your accessories also rotate. My new 2" focuser arrived today and I am very happy with it. If shipped in the US we ship Priority Mail . We have had a few questions and here are some of the answers. Store information. Omegon Pro 2'' Newtonian Crayford focuser, dual speed $ 169.00 Suitable for all 2" focusers. What about that for precision? HC-1 Standard with A Kit = $107.00 + shipping, 2 to 4 = $92.00 std., $97.00 A, $105.00 A w/kit5 to 10 = $90.00 std., $95.00 A, $103.00 A w/kit. Free shipping. This innovative focuser for 8" and 10" reflector telescopes features a helical spur on . Simple adaptation to a Newtonian telescope. Our focusers are machined to very precise tolerances which is necessary to provide accurate alignment of the focusing tube and proper operation. The draw-tube does not rotate. All too oftenthe laser beam impact travels in a circle as a helical focuser is rotated, or jumps back and forth as focus direction of a rack-and-pinion focuser is reversed. Not all telescopes are well equipped for this. 2 inch eyepieces are generally those that have both low power and a wide field of view, and are typically very expensive. The helical focuser has a 2" barrel. Vernonscope 2" 45° Amici Prism (Pre-owned) Add to cart. LEFT: Novak low profile helical focuser with 1-1/4-inch a dapter insert. Enjoy Free Shipping Worldwide! If shipped in the US we ship Priority Mail . Once you know, you Newegg! Attach a suitable adapter to the focuser via an 80mm dovetail ring. Omegon 2" helical focuser - sharper planets in any telescope. Due to COVID-19 shipping times may vary . Free shipping. You need to do nothing more than to connect it to your existing focuser. Found inside – Page 25THE CARLE PHOTO - VISUAL HELICAL FOCUSER ASTROLA NEWTONIAN REFLECTORS TELESCOPE MIRRORS 6 " Student $ 215.00 New Refiguring Student Deluxe 300.00 $ 69.95 $ 42.00 Model " A " $ 320.00 Model " A " Deluxe 8 " $ 460.00 $ 100.00 $ 59.00 10 ... Thank you. This is the perfect book for amateur astronomers who are about to invest in a new Schmidt-Cassegrain or Maksutov telescope, or for those who already have one and want to get the most out of it. You need to do nothing more than to connect it to your existing focuser. Another problem is the lack of a travel rate fast enough for accurate focusing. It is very well made and it works much
better than I thought. Large eyepieces, binocular heads, and cameras have been used successfully, but with slightly reduced stiffness. Focuser includes a 1.25 collet that can be used for added extension. Hiya! Found inside – Page 159It grossly amplified effects from minimal misalignments and minor runout in the helical focuser, not to mention exquisite sensitivity to ... Newtonian, considered rather “slow” in these days oflarge, fast mirrors, is a mere 0.017 inch. The preferred method is to contact us by e-mail with your order, be sure to include your name, address, (including country) and telephone number for order confirmation. This helical focuser elegantly overcomes the problem. Different sizes are available on either plate glass or Pyrex and with either enhanced aluminum or silver with silicon oxide overcoat. Omegon 2'' helical focuser (1) $ 119.00 ready for shipping in 24 h. Omegon 2'' Newtonian Crayford focuser, dual speed 1:10 $ 139.00 Product can be shipped as of 15.01.2022 Order now! The #FNM4 2" Two Speed Crayford Focuser For Orion XT-I Dobs fits on your focuser base if it looks like this picture and has the three sets of focuser leveling screws, like on the Orion XT Intelliscope and some other XT Dobs. Premium 2" Dual Speed Low Profile R&P Focuser for Newtonian/Dobsonian reflector telescopes. Photo below. This hefty focuser tips the scales at 14 oz. According to EU law, we have to display different, country-specific VAT rates in our online shop. We have sold over 2300 HC focusers as of 2013. One turn travels 0.125" (3mm); this gives just as good control as any 2-speed focuser. A guide to viewing stars, the moon, planets, meteors, comets, and aurora through binoculars. 11:1 fine focus control for backlash free and image-shift free focusing. We offer everything from our heavy duty tri-knob reduction unit with shaft lock system to different types of motor options for both . Many amateur astronomers have a Skywatcher telescope and want to upgrade it. This became more common with the introduction of the Chinese-made Dobsonians, the earlier versions of which were equipped with rather crude R&P focusers that had rough movement and so much slop that . But now our optional Omegon adapter lets you attach your new focuser to your Skywatcher telescope in only a couple of minutes. Found inside – Page 2... four - vane spider , new helical eyepiece focuser , standard ASTROLA legs and column stand , and rugged aluminum head . ... In all respects , the ASTROLA is a fine , firstquality 6 - inch Newtonian reflector . 2" Eyepiece Holder. We will then reply with the total cost including shipping. 2" helical focuser designed specifically for astrophotographyfits onto any 2" focuserimproves focusing precisionapproximately 0.1mm focusing precision with 42mm of travelcomes with a M48 thread for your camera. Found insideFor optimum performance at the Newtonian focus, a lowprofile helical or electric moto-focus focuser is recommended. These are much smoother to operate than the standard rack-and-pinion types. (For the CCD camera user a moto-focus has ... Mail your check payable to: KineOptics. or Best Offer. The center focuser hole in the scope tube has to be enlarged and new mounting holes drilled, and an eyepiece extension is needed Packed with practical advice gained from years of firsthand stargazing experience, this book demonstrates exactly why ShortTube 80 has remained a firm favorite among amateur astronomers for over three decades, and why it is likely to remain ... Our Helical Crayford design permits a fast rate, smooth feel, no slop, and backlash free performance in a simple, lightweight design. Description: New model with gear drive for heavier lifting capacity. The Focusing Tube can easily be removed from the Main Ring by simply loosening the friction adjustment screw and carefully sliding it out. For Newtonian Reflector OTAs. Both adapters make use of a compression ring, so your astronomical equipment is always optimally protected. 2" Low 20mm profile helical Newtonian focuser, 1.25" adapter. The low-profile design quickly and easily converts your standard Newtonian with a 3.5" base to a camera-ready telescope.For visual use, the smooth focusing brings out the very best in your telescope's optics. Nov 4 '11- Changed the design significantly. Especially difficult jobs such as focusing on a planet can be a real challenge. Found insideFor focusing, I bought a Newtonian low-profile helical 2 in focuser. Together with the 50 mm (2 in) elliptical flat, it permits use of really wide-field eyepieces – such as a 32 mm Erfle with 35 mm (14 in) field of view, which gives me ... It should look nice. With multiple lead threads, the rate can be increased somewhat, but still falls short of the necessary rate. The above images are of the actual item you will a second hand quick focus marksman extending telescope, jh steward of london all lenses intact some parts of leather outer protective cover missing. This T-2 adapter offers more than a simple adaptation to a T-2 thread. Eyepieces come in two sizes: 1¼ and 2 inch diameters, and the focuser needs to one or both of these sizes. Both optical tubes slide back and forth to achieve balance. Another problem is the lack of a travel rate fast enough for accurate focusing. For the do-it-yourselfer who mainly wants to observe visually, the low profile Newtonian focuser has . It will be a joy focusing eyepieces with your unit and at a
fraction of the cost of other focusers. They have a primary mirror, secondary mirror, and usually a corrector element at the focuser. Orion 2" Low-Profile Dual-Speed Hybrid Reflector Focuser. The Baader Diamond Steel Rack comes close and here is a link . Refractor Focuser 2" Rack&Pinion focuser for refractors. Helical Crayford Focuser - v2. Zero Backlash or Flex. You need to do nothing more than to connect it to your existing focuser. TSFOCR25S. The total focus travel range is thus 48mm. 524/2013 on Alternative and Online Dispute Resolution (ADR / ODR), online retailers are obliged to place an �, Antares Low Profile 2" Helical Focuser - height only 20 mm. The helical focuser is something like a screw in a nut: rotate the nut - the screw moves back and forth. Hexa-scope. Best regards
 
Harro Treur
Hoofddorp, Hello Joe
The Focuser arrifed in switzerland to Day. Everything  hoped for. Helical focuser for Newtonian telescopes ; When are you going to upgrade your telescope with a professional quality focuser? Found insideSee here, Types of Optical Designs, for the light path of a typical Newtonian reflector. Step 3: Assembly of Extra Hardware ... It is a simple helical focuser, meaning you slide the eyepiece to focus, then turn the set screw tight. The MoonLite CR1 Classic Crayford Focuser is an affordable, premium quality 2" Crayford focuser with a low 1.45" profile, two inches of travel (standard draw tube) and a vertical lifting capacity of 3 lbs! Most helical focusers have a single thread which limits the travel per turn to about .125". Nearly
perfect. Newtonian reflectors are a type of telescope which uses mirrors to focus light down to a point. The high-precision mechanics ensure very sensitive and precise focusing. Lot 18 Box A) Focusers 1) Helical 2 focuser for Newtonian telescope, and Astro systems 2 rayford focuser with 1 ¼ _ adapter, and 1 electric focuser attachments for Celestron SCT and Declination electric motor. One of the problems has been the annoying slop in the threads. This enormous load-bearing capacity is inherent in the design, meaning the focuser tube cannot slip. * excl. Top Rated Seller. It is suitable for 1.25" and 2" accessories. Now all I need is my primary mirror (due in March). This means you can make an eyepiece and camera parfocal with a flip mirror for example. The scale itself is similar to the millimetre markings on a ruler, but each marking here moves the focuser by only around 0.1 mm. SV161 1.25" Double Helical Focuser for Telescope Guide Scope with SV150 Adapter US$ 39.99 Svbony SV181 1.25'' Rack Pinion Newtonian Reflector Focuser TSFOCR25. Also, the HC-2 has no grease to collect bugs or get stiff in cold weather. I like to do trade with you againe. It is suitable for both refractors and Newtonian telescopes, but is also particularly useful with Schmidt-Cassegrain telescopes. This requires you to stand The low-profile design quickly and easily converts your standard Newtonian to a camera-ready telescope. C $18.92. We have designed a backward compatible modification, Service Note 10.20.06, to improve the stiffness of the HC-2 when using these heavy items. C $19.92 5% off. This shop uses cookies that are necessary for its correct function and, if necessary, also uses cookies from third party providers. For the do-it-yourselfer who mainly wants to observe visually, the low profile Newtonian focuser has a few advantages: Browse our selection for the right telescope motorized, electronic or auto-focuser for your stargazing needs. What makes a helical focuser a viable alternative? The focuser can take 2" or 1.25" eyepieces. The book that taught thousands of people about astrophotography has been completely revised and updated in this second edition. A focuser holds the eyepiece and allows it to be moved along the optical axis to achieve a sharp image. I just installed the first one on my 12.5" f/5 dob and I am very pleased with my new focuser. The HC-2 is really nice focuser - gratulation ! Tangxi Finderscope, 60mm Double Helical Focuser Guide Scope Finderscope with Bracket for Astronomical Telescope for QHY5II, STI, DMK, ZWO, SG4 4.9 out of 5 stars 7 2 offers from £91.69 I saw a couple of your fantastic focusers at Stellafane this month and loved them. The Steeltrail helical focuser is designed completely differently: The inner 2" barrel moves in and out with millimetre precision and your camera or eyepiece will always remain exactly in position. If you need the article earlier, we can rush it for you for an additional price. Hello,
 
Monday I received my 2 HC-2 focusers. Free shipping for many products! The helical focuser has a 2" barrel. You would move the draw tube in and out until the image was in focus and then turn the PVC ring so it would lock the draw tube in . Here is the basic Working principle: Helical Crayford (left) and Dual Speed Helical Crayford (right) On the left is the working principle of a Helical Crayford focuser. Focuser upgrades for Telescopes with Crayford, rack and piniion and electric focusers for Astronomical telescopes COVID-19 - We are shipping normally with some delays 01322 403407 * excl. Only 2 left. Focuser stability. any focuser on a Newtonian telescope. Another problem is the lack of a travel rate fast enough for accurate focusing. Eyepieces are clamped in the usual way with a 10-32 nylon thumb screw, which prevents damage to eyepiece barrels. We carry some of the most commonly required parts, ranging from telescope focuser parts to replacement scope caps from some of the top manufacturers. Thanks very much for a terrific focuser! can hold over 16 lbs. It does a perfectly adequate job with eyepieces, but my personal view is that it probably isn't up to holding and eyepiece, phone holder and phone. We will still accept PayPal (with an additional 3% to cover the paypal fee) only if other methods are unavailable. $38900. Your new focuser does exactly what you tell it to. $7.95. That is a really neat design that has been well executed. Micro focuser types perform a similar action but with smaller gears for fine tuning. 187 207 20. with your order, be sure to include your name, address, (including country) and telephone number for order confirmation. 278 336 12. Baader 2" Newtonian Coma Corrector MPCC Mark III - from f/3.5 to f/7. Found inside – Page 161Focuser travel is quite limited, however, and may require an extension tube to focus some eyepieces. ... with a 2-inch Crayford-style focuser on the MN61, while the MN71 can be purchased with either that or a 2-inch helical focuser. With a low-profile racked-in height of just 58mm, the Hybrid Focuser features a built-in 43mm extension tube for enhanced versatility, and has a total racked-out height of 122mm. 1/10 wave elliptical flat mirrors for your Newtonian project. MoonLite CR 2″ Newtonian Focuser. Especially difficult jobs such as focusing on a planet can be a real challenge. Newtonian Telescope Tube / Truss. Both adapters make use of a compression ring, so your astronomical equipment is always optimally protected. . Found inside – Page 9LUMICON 1/4 " Helical Focuser $ 49.50 LUMICON 2 " Helical Focuser $ 59.50 LUMICON Non - rotating Helical Focuser $ 89.50 ... EASY - GUIDER $ 169.50 MAKE YOUR OWN ASTROGRAPH Prime Focus Astrophotography with a Newtonian by Chris Schur T. Hiya! The shoulder screws are necessary to mount the bearings. The alternative to all adjustment devices on the market! 15 Lot18 Box B: Finderscopes-Meade 6 X 30 Finder Scope with mounting bracket. Brand New. Top Rated Seller. This helical focuser lets you focus precisely. Telescope focuser products include rack and pinion and micro-focuser designs. It  is a nice piece of work and it works wonderful. The focuser can take 2" or 1.25" eyepieces. In a few months, I'll send you a picture of the
completed scope. The Astrophotography Manual is for those photographers who aspire to move beyond using standard SLR cameras and editing software, and who are ready to create beautiful images of nebulas, galaxies, clusters, and the solar system. 205.00 € TS Optics Non rotating helical focuser with M48 connection . The rotation is extremely smooth and focusing is no trouble at all. In this case, please contact our customer service department. Ideal minimum height of focuser from tube would be 58mm or smaller and the focuser draw tube wouldnt stick out more than 20mm from the id of the tube - too much to ask? Min Bid $14 . The focuser can take 2" or 1.25" eyepieces. Up to now they had a problem however: there was no suitable adapter available for Skywatcher dimensions. NOTE: Due to increasing PayPal fees, we prefer checks (drawn on a US Bank), or cash. Shop Quality & Best Monocular/Binoculars Directly From China Monocular/Binoculars Suppliers. Both adapters make use of a compression ring, so your astronomical equipment is always optimally protected. 1.25 inch Telescope Helical Focuser w/ M42 . Regards,
Phil Watson
Australia. Best regards

Miguel Remartínez, 2 to 4 = $92.00 std., $97.00 A, $105.00 A w/kit. A major feature of this book is the way it compares not only different classes of refractor, but also telescopes of each class that are sold by various commercial manufacturers. Backlash under 0.002". Found insideTHE CARLE PHOTO - VISUAL HELICAL FOCUSER ASTROLA NEWTONIAN REFLECTORS TELESCOPE MIRRORS 6 " Student $ 215.00 New Refiguring Student Deluxe $ 300.00 6 " $ 69.95 $ 42.00 Model " A " $ 320.00 8 " $ 59.00 Model " A " Deluxe $ 100.00 ... Only after logging in, the country of origin is definitively known, and the VAT rate is always displayed correctly in every case. The HC-1 can be disassembled and cleaned in under a minute without any consideration to the adjustment or collimation. Also, the HC-1 can be switched between the Standard and the "A" in minutes. (SPECIAL PRICE) US $117.60 | Buy StarPal 2 Inch Focuser Telescope Speed Astronomy Reflector Telescope Monocular Type For Eyepiece For Monocular Astronomic From Vendor StarPal Outdoor Store. The helical focuser has a 2" barrel. This is the must-have guide for all amateur astronomers who double as makers, doers, tinkerers, problem-solvers, and inventors. Purchase telescope replacement parts at High Point Scientific. FOCN is a standard 2" rack&pinion Newtonian focuser. Focuser Upgrades Jack Kramer. Custom Mounting Bases... now available for the HC-1 and HC-2 focusers. The short 2" focuser is ideally suited for self-construction of visually optimized telescopes. It is therefore optimal for solving simple focusing problems. Use care when disassembling and cleaning. Vernonscope 2" 45° Amici Prism (Pre-owned) $175.00. Order the best telescope focuser for your stargazing needs at High Point Scientific. Found inside – Page 49LUMICON 1 % " Holical Focuser $ 49.50 WMICON 2 " Helical Focuiser $ 59.50 WMICON Non - rotating Helical Focuser ... or 14 " NEWTONIAN EASY - GUIDER $ 169.50 3x Rolay Diagonal ( see photo ) $ 99.50 Illuminated reticle oyepiece system . Precision StainlessHardware: All stainless steelEyepiece Lock: Non-scratching nylonFriction Screw: Teflon tipped stainless. This is done using the supplied spacers between the threaded mounting holes on the Main Ring and the focuser mounting plate on the telescope. Some products are called helical focusers, and provide screw turn action for these scopes. The inner focusing mechanism also means that this focuser does not rotate attached accessories, but raises and lowers them - just like an elevator. This allows it be inserted into the focuser just like an eyepiece. The screw-less focuser for your telescope - it simply slides in. The HC-1 is in most respects identical to the very successful HC-2, only smaller. Adjustment is made by turning the eyepiece. DUAL-SPEED 2" LOW PROFILE CRAYFORD FOCUSER FOR NEWTONIAN REFLECTORS . SV150 Double Helical Focuser Adapter. This book uniquely brings together a collection of observing, analyzing, and processing hints and tips that will allow the amateur to build skills in preparing scientifically acceptable spectra data. The low-profile design quickly and easily converts your standard Newtonian with a 3" base to a camera-ready telescope.For visual use,. The design of the precision helical focuser eliminates any play in the drawtube over its entire travel range. It can take virtually any accessory that you wish. The 3.5" base provides for replacing larger focusers with a center-to-center hole-spacing of 2.75". That is exactly what the Omegon 2" Helical IF focuser provides. Note: Special care must be taken to make sure you choose the right part number. Found insideA low-profile helical focuser + comero + magnifier. special attention to the accessibility of the focus and the vignetting of the light cone. For optimum performance at the Newtonian focus, a low-profile helical or electrical focuser ... Rack and pinion focusers. Installing was very intuitively and with the supplied spacers, mounting went without a glitch. The Focuser is so simply and genial like a swiss swatch work. Find many great new & used options and get the best deals for Newtonian Rotating Helical Focuser 2" & 1.25" at the best online prices at eBay! I just want to let you know that I am very pleased with these well made instruments. There is a small compromise to this modification as it decreases the travel of the focuser by an amount inversely proportional to the increased length of the longer shoulder screws. (~8kg) of payload and still provide smooth, slippage-free motion. The FOCH is a rotating universal base, 8TPI helical focuser with low focus of 20mm (with part NPA low focus is close to zero). The great news is that with the HC-1, the mounting height is easily adjustable after mounting. The low-profile design quickly and easily converts your standard Newtonian to a camera-ready telescope. 1) We have sold over 2300 HC focusers as of 2013. Found inside – Page 70Performance of ASTROLA Dual - capability REFLECTORS These two newly introduced outstanding performance Newtonian reflectors are engineered for the observer ... FOCUSER : Carle photo - visual helical focuser or Rack and Pinion . On the accessories side, it has a mounted T-2 thread as well as a 1.25" receiver. But this set is also useful for other purposes involving permanent large separation set-ups. Lumicon Low-Profile Focuser for 3 Inch Newtonian Base is a high-precision, pin-and-groove type helical 1.25" focuser. Great for ATM's. Includes 1.25" adapter. Many telescopes have a focuser which does not allow very precise focusing. Really, really clever!! Last sommer I came to know Your HC-2 focuser at the telescope of a friend
of mine - and it worked very well. B&H # ALBDSNT MFR # BDS-NT. Many telescopes have a focuser which does not allow very precise focusing. I'm inspired !! Equipping your telescope with the Omegon 2" helical focuser is quick and straightforward, and you will then always be able to find the perfect point of focus. Helical focuser for Newtonian telescopes ; When are you going to upgrade your telescope with a professional quality focuser? I'm sending a check for a 2" focuser by mail today. We do not accept Credit Cards. This book offers a comprehensive introductory guide to "choosing and using" a series LXD55 or LXD75 computer-controlled ("goto") telescope, containing a wealth of useful information for both beginners and more advanced practical amateur ... Available in other Styles, Configurations & Kits. Suitable for all 2" focusers. This helical focuser elegantly overcomes the problem. i'll . Focusing friction is adjusted by using a friction knob, which pushes the Teflon ball against the Focus Tube. I am going to turn a solid base out of black Delrin and set the HC-2 on top. This fine focusing set is designed to find the exact position of focus. Full threaded screws should not be substituted as they are under size and do not properly align the bearings. However, it can skew the optical axis significantly and . In order to make the scope as compact as possible, the Heritage features a lightweight 1.25" helical focuser. Nov 4 '11- Changed the design significantly. If however, the focuser axis of travel is perpendicular, as in Refractor and Schmidt-Cassegrain style telescopes, you may want to consider a focuser with an internal brake. 10mm Helical Focuser For Telescope 1.25 Inch Aluminium Alloy Focusing Stroke NEW. TS-Optics 2.5" Rack and Pinion Focuser - supports up to 6 kg - travel 95 mm. Use care when disassembling and cleaning. Adjustment is made by turning the eyepiece. 2" Low 20mm profile helical Newtonian focuser, 1.25" adapter. We use expensive high quality stainless steel bearings and precision 303 stainless steel shoulder screws made in USA. The -A Kit consist of two longer shoulder screws and four spacers and can be ordered mounted on new focusers or as a retrofit to older HC-1 focusers. 1.25inch Universal Telescope Focuser Adapter M42x0.75+1.25inch Eyepieces Base. Found inside – Page 71My set-up consists of a 0.30 m f/5.3 Dobsonian telescope, grating, grating mount, low-pro®le helical focuser, tele-extender (variable focus eyepiece ... The telescope, a Newtonian re ̄ector, is attached to a Dobsonian mount ± see Fig.
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