long-exposure images, allowing you to capture more detail and clarity in your photos.6. images. in stock. Flattener Flat73A for ZenithStar 73. The model featured in this review is the 2018 edition with gold accents, with the new integrated diffraction-spikes Bahtinov mask in the dust cap. The Z61 is the most portable telescope ever made by William Optics, a company with a reputation for building beautiful astrophotography refractors. The built-in star-spikes Bahtinov mask makes focusing your DSLR camera through the telescope quick and easy. This telescope is a full-frame apochromatic refractor, which means that its perfect for cameras such as my Canon EOS 5D Mark II, or the popular Canon 6D. High-quality & Affordable William Optics ZenithStar Telescopes for breathtaking images of our universe with 2yr warranty support. By following these tips, you can improve the image quality of your William Optics refractor The top features a Vixen-style handle/saddlebar. RedCat 51 Specifications: Optical Design: Petzval Apochromatic Refractor (4 elements in 3 groups) Lens Type: Prime Diameter: 51mm The scope came nicely packaged. Overview of William Optics Telescopes 3. 38 Comments The iOptron SkyGuider Pro is a portable EQ mount that offers a reliable solution for astrophotography on the go. accessory for telescopes that is used for astrophotography. 4. They come in a range of resolutions and sizes.-Atik CCD cameras: Atik CCD cameras are known for their its right ascension and declination coordinates to find it.Repeat these steps for other objects you want to 7. William Optics also makes clamping rings for their magnifying finders that fit most current William Optics Telescopes. I managed a few hours of cloudless skies with this shortly after super quick delivery and was astounded by the lack of CA, perfect white pin pricks of light without any signs of colour segregation. This finder rail is much narrower than Vixen-style mount rails, so you cannot attach this guidescope directly to larger Vixen mount saddles. Excellent mechanics, fit and finish, latest WO Rack & Pinion 2-speed fine focuser, aluminum knob protection cover and super-high transmission multi-coating. Compare. Apply a small amount of the cleaning solution to the lens tissue and gently wipe the lens in a circular motion, The William Optics ZenithStar 61 uses FPL-53 glass to help produce excellent sharp images for astrophotography or wildlife photography when working in conjunction with any DSLR. These scopes are not intended as a primary telescope for imaging or visual observing, but they make a good companion scope for those who already own longer focal length instruments. The latest ZS 71 ED Doublet is here to fit all your needs! Add to Cart. The scope boasts premium Japanese Ohara FPL-51 ED glass and Fully Multi-Coatings for an excellent sharpness and color correction. centered in the frame. Thank you to FLO for going the extra mile to ensure I received the telescope while I was in the UK..really appreciate the fantastic service! The primary features of RedCat telescopes are: The RedCat is also quite compact, with a length of 225mm when fully retracted and with a weight of 3.24lbs. Over the years, as my knowledge and equipment has grown, I have, in the main, turned to FLO the majority of the time. With a focal length of 430mm, youll be able to capture large deep sky objects such as emission nebula and open star clusters. PRODUCT LINKS:William Optics UniGuide 50mm Guide ScopesWilliam Optics UniStar 61mm Guide Scopes. The William Optics ZenithStar 81 mm aperture Doublet APO Refactor is an extremely versatile telescope ideal for both astrophotography and general photography. Store in a dry ZenithStar Series Doublet 'Apo' Refractors, 5. The ZS73 requires the Flat 73A or the adjustable Flat 73R field flattener. About William Optics and careful cleaning, you can ensure that your telescope continues to provide clear and crisp images of the No more image shifting! The big GT153 requires William Optics Flattener 8 field flattener/0.72x focal reducer. Copyright 1996-2023 William Optics. Optical system: Air-spaced doublets with 1 FPL-53 fluorite element: Aperture: 73 mm: Focal length: 430 mm: Focal ratio: f/5.9: Image circle: This buyer's guide summarizes the main characteristics of each current product line and serves as a single stop for information for prospective buyers of William Optics telescopes who wish to quickly understand how to choose a William Optics refractor for astronomical and terrestrial observation. Its a pleasure to assemble and very satisfying to hold and use. mirrors and cause mold growth, which can be difficult to remove.3. Awesome product! telescopes. Air-spaced doublet with fully SMC multicoated optics and Ohara FPL 53 ED element. Designed to be able to connect to DSLR cameras (optional adapter needed), it can double as a great telephoto lens. NOTE: Photos show the earlier V2 model, which has a white focuser, the focuser fitted to the VIII model is the same but has a black finish. It has all the benefits of the ZenithStar family at a price that is truly unbelievable. Skip to the beginning of the images gallery. The new CNC-machined and . pollution: Avoid observing from areas with high light pollution, as it can reduce the image quality.8. 50mm F/4 Rotolock guiding scope ( Free Gift ) limited for first 10 sets only! UniGuide Guide ScopesThe William Optics UniGuide Scope series features a 50mm f/4 objective with the William Optics RotoLock to hold the guide camera. Integrated CAT Handle bar with Vixen-style Finder Shoe Clamp - great for guide scopes! Eyepieces with a larger apparent field of view (AFOV) can provide a more immersive observing experience, as Many William Optics telescopes are used for astrophotography, and the company offers their own lines of guide scopes that can be mounted on their refractors. telescope is not properly collimated, the image will be blurry and stars not round shape (coma Zenithstar 81 APO Brand New 2019 Super ZenithStar 81 F6.9 imaging APO (Innovative Bahtinov Mask Cover (Patented) included !! However, be aware that using very short focal length eyepieces can result in a dimmer image and may require The NEW William Optics Zenithstar 73 APO III features an air-spaced doublet lens with fully multi-coated optics and an Ohara FPL-53 ED glass element for sharp, high-contrast images virtually free of false colour. In late 2019, a second generation was released with a 'Space Gray' color option with black trim. instructions carefully when using these products.Once you have finished cleaning the lens, use a fresh piece Field Flatteners and Focal Reducers 8. Here are a few options: -ZWO ASI series CCD cameras: ZWO ASI series cameras are popular among astrophotographers and are known for This guide described and summarized the features and specifications of the telescope and accessories available from William Optics. The NEW William Optics Zenithstar 73 APO III features an air-spaced doublet lens with fully multi-coated optics and an Ohara FPL-53 ED glass element for sharp, high-contrast images virtually free of false colour. This review saves shoppers much time and helps substantially in the buying decision. JavaScript seems to be disabled in your browser. showing basically the same detail as the 80mm but a bit sharper and near zero C.A..That FPL53 glass makes a difference, a new kind of Clarity compared at mid/ high powers and exit pupils! All rights reserved. Nice quality, well presented and a fair price. I got the WO wedge as well and so far have managed 90sec subs unguided without trailing. Their premium diagonals include a Dura Bright coating for high reflectivity and a RotoLock collar to easily fasten the diagonal to the telescope. VAT, plus shipping costs. Here are a few of the most common ones:1. The scope out of the box is not set up for photography. We are very exciting to announce New 2018 Super ZenithStar 126 F7.7 imaging APO!!! Product no. Since the GS61 guide scopes are optically identical to the William Optics Z61 telescope, they have apochromatic optics and provide a full-frame image circle. William Optics. !Innovative Bahtinov Mask Cover Adjust the tripod legs and mount until the Store the mount and tripod: If the telescope has a mount and tripod, store them in a dry and cool Pure Fluoriteoffers the highest partial dispersion at around 94.99 V; Ohara FPL-53 glass is very close to Fluoriteat 94.93 V and is often referred to as Synthetic Fluorite. With regular It provides high-resolution images when used for astrophotography or wildlife photography and is a convenient ultra-portable telescope for visual astronomy (think binocular astronomy targets). is compatible with your telescope's focal length and has the appropriate back focus distance. observing the details of the lunar surface, such as craters, mountains, and valleys.Planets: The telescope's CNC machined aluminium for a superior fit and finish. crisp image of the celestial objects you want to observe. Because the flattener is WO with the same built quality it just completes the whole assembly and WO should probably sell it like that from the startSo far I cant say anything negative and yes, it did arrive with three weeks of cloud cover, First Light Optics LtdUnit 7 Budlake UnitsBudlake RoadMarsh Barton Trading EstateExeter, DevonEX2 8PY, Company No. The 50mm F/4 guide scope has a 1.25 opening for guide cameras such as the Altair GPCAM2, and a well constructed RotoLock adapter. Astrophotography % SALE %. The 2.5" 10:1 rack & pinion focuser is smooth, stable and reliable, providing no slippage over long imaging sessions. Table 3 includes the suggested settings for each flattener with their compatible scopes. These scopes are intended for visual observers and astrophotographers who demand minimal residual color when imaging, especially when brighter objects are in the field of view. FindersWilliam Optics has offered a number of premium quality finder scopes that match the style of their telescopes. coordinates to locate other objects. to help you locate and center objects in the sky more easily.5. RedCats are currently available in an aperture of 51mm with a focal ratio of f/4.9, giving the telescope a focal length of 250mm. The Pleiades Star Cluster Canon EOS 5D Mark II + Optolong L-Pro Broadband Filter, The Orion Nebula Canon EOS 5D Mark II + Optolong L-Pro Broadband Filter. FPL-53 is also noticeably better than Ohara's lower spec' FPL-51 glass which offers an abbe index of 81.54 V. The quality of this scope and field flattener is exactly what you'd expect from a company like William Optics. The flattener threads directly into the telescope focuser drawtube for a secure connection. focal length of the eyepiece being used. Wide-angle eyepieces with AFOVs between 60-80 degrees are ideal CNC machined aluminium for a superior fit and finish. magnifications for observing celestial objects. Owners of Sony mirrorless cameras can use autofocus with the RedCat with the addition of the optional TechArt Pro adapter than includes a built-in focusing motor. F/5.9, 388mm come with L-Based bracket, and Custom Aluminum Case. This is the ONLY company I've dealt with in the past 10 or so years that has delivered the kit on the day it was promised. Telescopes > William Optics > ZenithStar > William Optics Apochromatic refractor AP 73/430 Super ZenithStar 73 Gold OTA. For the best experience on our site, be sure to turn on Javascript in your browser. The Orion Nebula and the Pleiades Star Cluster using the William Optics Zenithstar 73 APO. Figure 7 A William Optics field flattener (FLAT-73A). Red version. To counteract this, the guiding scope is used to Image credit: William Optics. The abbe index is used to quantify the 'partial dispersion' of a particular glass. Telescope cases: Cases and covers can help protect your telescope from dust, dirt, and other environmental First light The Zenithstar delivered his first suprise during the daytime. rotatable. Extra-heavy duty. Large aluminumknobs. I bought this as a portable field scope and as a guide scope for my 8" EdgeHD, along with the 61ii flattener. I started to read the specs, 105mm ED air spaced triplet, 360 degree rotating 2.5" Crayford focuser with 10:1 reduction, focus calibration scale on the drawtube, retractable dew shield, and a water resistant case. I appreciate the included rubber-tipped screws that do not damage the painted finish of the optical tube. This is designed to fit into the Saddle/handlebar found on William Optics scopes or in other compatible finder bases. The William Optics Gran Turismo (GT) series uses apochromatic triplet objectives with an FPL-53 element to achieve a higher degree of color correction than the ZenithStar series. The ZS61 requires the Flat 61A or the adjustable Flat 61R field flattener. A reticle eyepiece, which is useful to help center a star in the field. As William Optics changes the features and specifications of their product lines, we will update this guide to keep it accurate and useful for the foreseeable future. Of course, the telescope can always be rotated 180 degrees so its not a problem.The coarse and fine focus adjustments are very smooth and the focus lock does its job well. their sensitivity and low noise. For astrophotography, the FLT91 refractor requires the William Optics FLAT6III-M92 field flattener/0.8x focal reducer or the FLAT 68III flattener. Sign up to get exclusive deals, observing tips, and new product announcements. observing open and globular star clusters, such as the Pleiades and the Hercules Cluster.Overall, this Not so with FLO!! The focal ratio of a telescope represents its light gathering ability, and the Z73 hits the sweet spot. filter can reduce the glare and brightness of the moon, while a nebula filter can enhance the details of gas the main telescope and is used to track and guide the telescope's movement during long-exposure imaging.When The Agena Astro 24mm reticle eyepiece can be used with this 50mm RACI finder. The Z73 is very compact and portable. These cameras come in a range of resolutions and sizes to suit different damage the surface.-Lubricate any moving parts, such as the focuser, as needed with appropriate The William Optics Flat 73 1:1 Field Flattener with a 2-inch light pollution filter inside. The Z73 has proven to be one of the most useful telescopes for astrophotography I have ever owned. It has all been said before, a superb quality small and portable scope, extremely well made and will certainly remain under my ownership for many years to come. Perfect size for serious observations of deep sky objects and planets. telescopes.When selecting a CCD camera for your William Optics refractor telescope, it's important to 2 Ferrari ZenithStar Racing CONNECTION INSTRUCTIONS 4 Ferrari ZenithStar Racing He received his first telescope at the age of 5 and completed his first university course in astronomy at the age of 12, eventually receiving a master's degree in the subject. It can also be used for visual observation using a specially-made William Optics erecting diagonal (sold separately) that threads onto the focuser. Collimation: Make sure that the optics are properly aligned and the collimation is accurate. The CNC carry handle is particularly helpful and provides confidence that you wont drop the thing. contrast and reduce glare, especially when observing bright objects like the Moon and planets.6. The FLT132 is also offered with a FeatherTouch focuser upgrade. is level and pointed at a stable object. It feels really solid and well constructed from high quality materials. Very happy with my purchase and my guiding has never been better (it is paired up with a Lodestar Pro). Its a pleasure to assemble and very satisfying to hold and use. ensure optimal performance.-Avoid touching the lens or mirrors with your fingers as oils and residue can My biggest thank you is to First Light Optics. telescope in a cool place to avoid heat damage. Excellent mechanics, fit and finish, with the latest WO 2" Rack & Pinion 2-speed fine focuser. You either need the flattener or other spacers and extra adapter if using DSLR. The abbe index is used to quantify the 'partial dispersion' of a particular glass. Since the GS61 terminates in a male M48 thread, a camera-specific 48mm wide T ring is also required (sold separately). Image credit: William Optics. New Losmandy style Dovetail. In my experience with the Z73, the combination of 430mm at F/5.9 was just right for collecting long-exposure astrophotography images of the Butterfly Nebula and Heart Nebula. Excellent and speedy customer service by FLO. William Optics offers 48m T-Ring mounts to attach your Canon or Nikon DSLR to the telescope. For focusing, the RotoLock adapter rides on an M48 threaded barrel, allowing it to be screwed in or out to obtain focus. The William Optics Flat 6AIII adjustable field flattener/0.8x focal reducer works with the ZS81 and ZS103. Since my main interest is in astrophotography, I also purchased the 73A adjustable field flattener and DSLR-M48 ring adapter. Simply point the telescope at a bright star, and position the central spike evenly between the X. Make sure the from temperature and humidity changes.-Check the alignment and collimation of the telescope regularly to It is similar to the Gran Turismo series, and at present it comes in apertures of 91mm at f/5.9, 132mm at f/7, and 156mm at f/7.8 These are premium instruments primarily aimed at astrophotographers, but they can also be used for visual observations. distortion in the image. The fast f/5.9 focal ratio and compact size make it ideal for convenient wide-field astrophotography or piggybacking. William Optics Apochromatic refractor AP 73/430 Super ZenithStar 73 Gold OTA. 3. get the best possible image quality. eyepieces that are compatible with the telescope's focal length and provide the desired magnification range. 2021 NEW Release: William Optics Zenithstar 73-III f/5.9 APO (Free Soft Carrying Bag) . Only managed visuals of the moon so far, but the detail is exquisite. The William Optics Zenithstar 73 with a Canon 60Da DSLR attached. monitor the object's movement and send signals to the mount to make small adjustments to keep the object Attach the diagonal Since then, Agena has become one of the leading online retailers of telescopes and astronomical accessories worldwide. The William Optics red-dot finder fits most William Optics scopes, as well as other telescopes, and includes a Vixen-style mounting base. F/7.7 FPL53 Doubletair-spacedAPO, in CNC machined ultra-high precision lens cell; New V-Power Focuser Extra-smooth new 3" Crayford Focuser: a treat to use during astrophotography. William Optics Zenithstar 73-II f/5.9 APO (Free Soft Carrying Bag) . In the GuideStar series, the conventional Z61 focuser has been replaced by a rotatable 2" drawtube that you can slide in or out manually over a range of 60mm for coarse focusing. Here are the general steps to focus your telescope: Insert an eyepiece into the diagonal and insert the diagonal into the telescope's focuser. they allow you to see a wider area of the sky. It is often said, that the best telescope is the one you use most often. Additionally, make sure that the camera telescope without requiring a longer focal length eyepiece. Specification What's in the box Reviews Questions Over the years, as my knowledge and equipment has grown, I have, in the main, turned to FLO the majority of the time. If the Brought as a part of grab & go setupI'll keep it simple as the reviews already sum it, Stunning build quality, looks, and optics and delivery, and customer service, thank you Alex for very detailed accurate advice, Tony. Sort By. Finderscope: A finderscope is a small, low-power telescope that is attached to your main telescope and used Specifications of William Optics Zenith-Star 66mm Doublet SD APO Refractor Telescope w/ 2 Speed Focuser + 2" Dielectric Diagonal ( Blue Tube) ZS66-SD-BP2: Aperture: 66mm: Focal . Along with the Z61, it is easily one of the most manageable astrophotography telescopes Ive ever used. eyes' ability to adjust to the darkness.These are just a few of the many accessories available for refractor Here are the general steps to clean the lens of your telescope: Check the lens surface for any debris or dust. Image credit: Agena AstroProducts. SBIG STF series cameras are designed specifically for astrophotography and offer high sensitivity and low noise. but the flattener would take a few weeks due to the Suez crisis and manufacturing delays. This beautiful scope is everything you always wanted in a refractor, starting from extreme sharpness for clear details, and APO color correction. I was after a small portable scope for visual and occasional snaps. For visual use, no accessories other than a 1.25" or 2" diagonal and eyepiece are required, and these items are sold separately.
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