Using a cropped sensor camera, the stars were pin-sharp across the entire frame; I could not be more pleased! Finderscope: A finderscope is a small, low-power telescope that is attached to your main telescope and used ready to go. telescope is not properly collimated, the image will be blurry and stars not round shape (coma Tube with Rings and Dovetail Weight9.94kg. William Optics Flattener Flat73A for ZenithStar 73 - Astroshop William Optics Zenithstar 73-II f/5.9 APO (Free Soft Carrying Bag) Discontinued. 7. looks). FLO recommended & im more than happy with the purchase. rotatable. Extra-heavy duty. Large aluminumknobs. This beautiful scope is everything you always wanted in a refractor, starting from extreme sharpness for clear details, and APO color correction. Flattener Flat73A for ZenithStar 73. The built-in star-spikes Bahtinov mask makes focusing your DSLR camera through the telescope quick and easy. telescope. Its clear optics allow high magnifications and sharp imaging during astrophotography and nature photography using any SLR camera. Figure 3 ZenithStar Z103 refractor telescopes in red, gold, and blue trim. tips, you can ensure that your William Optics telescope is stored safely and properly when not in use, which This beautiful scope is everything you always wanted in a refractor, starting from extreme sharpness for clear details, and APO color correction. Their staff are clearly knowledgeable, friendly and helpful. William Optics is a Taiwan-based manufacturer of telescopes and astronomical accessories. 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. The William Optics ZenithStar 73 Version III is a two element apochromatic refractor with a focal ratio of f/5.9 and a focal length of 430mm. Both series of guide scopes have only 6.2mm of back-focus available, so they can only be used with 1.25" cylinder-type or "Mini" cameras from QHY, ZWO, SBIG, and so forth. The Orion Nebula and the Pleiades Star Cluster using the William Optics Zenithstar 73 APO. The Ohara FPL-53 ED Glass is a top-of-the-line material found only in the best apochromatic refractors. iOptron SkyGuider Pro Review | Remarkably Portable Astrophotography place: Store the telescope in a dry place to avoid damage from humidity. As low as $730.00. This is a very useable quality scope. It has all the benefits of the ZenithStar family at a price that is truly unbelievable. William Optics Zenithstar 73 Core Specs: Focal Length: 430mm; Focal Ratio: F/5.9; Objective Size: 73mm; Glass Type: FPL-53; Weight: 5.5 lbs; Focuser: Dual Speed Rack and Pinion; Astrophotography Performance in Compact Package At this time, orders are crowded, new orders will be shipped in a week. Best price guarantee. higher-quality optics to avoid distortion. The William Optics refractor telescope is a high-quality instrument that is suitable for observing a wide range William Optics ZenithStar 73 Refractor Specifications Refractor Design: Apochromat (APO) Focal Length: 430mm Focal Ratio: f/5.9 Focuser: 2.5" Rack & Pinion Retracted Length: 310mm Diameter of the Front of the Scope: 92mm Weight: 5.5 lbs. Not had chance to use it because of the weather. The William Optics Zenithstar 61 is a doublet apochromatic refractor telescope that excels in deep-sky DSLR astrophotography. contrast and reduce glare, especially when observing bright objects like the Moon and planets.6. For visual use, no accessories other than a 1.25" or 2" diagonal and eyepiece are required, and these items are sold separately. To maintain your refractor telescope, you should: -Keep it covered when not in use to protect it from dust and moisture.-Regularly clean the lens or mirrors Image credit: William Optics. Here are the general steps to focus your telescope: Insert an eyepiece into the diagonal and insert the diagonal into the telescope's focuser. $ 331.00 incl. Use a dust cover or a soft cloth to cover the telescope and protect it from dust.2. Some scopes, including the William Optics Star and RedCat series, do not require a focal reducer or field flattener for astrophotography. With an appropriate field flattener/focal reducer, they also serve as very good photographic instruments with many cameras including those with larger APS-C and full-frame sensors. FLO awesome company, top customer service. Two-year, no fuss warranty and constant customer service! Large image circle for imaging with APS-C and full-frame sensors when used with the included field flattener. from temperature and humidity changes.-Check the alignment and collimation of the telescope regularly to William Optics While the optical and mechanical design of the RedCat series is quite sophisticated, these instruments are easy to use and suitable for intermediate to advanced observers. Looks ,feels and performs like the quality product it is. They come in a variety of sizes and resolutions.-SBIG STF series CCD cameras: The William Optics Zenithstar 73 APO has an f-ratio of F/5.9. I did not wish to damage the finish on the gold dovetail bar so I attached it to an ADM saddle, fixed to an eleven-inch dovetail bar. The camera was attached to the telescope using the Canon 48mm T-Ring, with the Flat73 field flattener in place. The Fluorostar refractors further reduce chromatic aberration relative to the Gran Turismo series. Anyone in the market for a premium wide-field imaging refractor in a compact package will be hard-pressed to find a contender that can top the Zenithstar 73. I got the WO wedge as well and so far have managed 90sec subs unguided without trailing. Staff have always been prompt in answering any questions I may have and I really cant fault their service. William Optics ZenithStar Telescopes | ProAstroz William Optics ZenithStar 61II Doublet Refracting Telescope - Red These cameras come in a range of resolutions and sizes to suit different This scope features a black anodized Vixen/Synta-style rail bolted to the bottom of the finder tube for direct insertion into compatible handles on new William Optics telescopes. patience and persistence, you will be able to enjoy the beauty of the night sky with a clear and crisp view. double stars, which appear as two stars very close to each other in the sky.Nebulae: The telescope's wide Before I review the Williams Optics Zenithstar 73 III APO telescope, I want to provide a brief overview of my experience in purchasing from FLO. Copyright 1996-2023 William Optics. The scope didnt disappoint. William Optics frequently introduces innovations and features into their telescopes, and they occasionally release entirely new product families. Focusing with a DSLR camera on the Zenithstar 73 APO is quick and easy using the integrated Bahtinov mask. Figure 11 William Optics 2" 99% Dura Bright RotoLock Mirror Diagonal for Refractors. It's important to check your camera or autoguider's back-focus requirements to ensure compatibility before using this scope. Accessories 9. place as well. The William Optics red-dot finder fits most William Optics scopes, as well as other telescopes, and includes a Vixen-style mounting base. First Light Optics LtdUnit 7 Budlake UnitsBudlake RoadMarsh Barton Trading EstateExeter, DevonEX2 8PY, Company No. 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. ensure optimal performance.-Avoid touching the lens or mirrors with your fingers as oils and residue can Adjustable reducer flattener Flat73R for Z73, Super high precision COPPER T mount for Canon EOS full frame Cameras, Super high precision COPPER T mount for Nikon full frame Cameras, All New Adjustable Flat6AIII (T-mount not included), Slide-base 50mm Guiding Rings (with srews), (Best Buy) Red dot finder Kit with Vixen Style Mounting Base. Zenithstar 73II APO Zenithstar 73II APO Zenithstar 73II is a greatly versatile and portable refractor telescope for beginners and veterans alike. Designed for both astrophotography and wildlife photography, high power visual observing by Stan Bembenek I do a lot of camping and wanted to get a small refractor with enough correction to replace my Shortube 80. Worth getting for the Clarity on the Moon and Planets visually alone! Light Some of the best objects to view with this telescope include: Moon: With its high-quality optics and sharp images, the William Optics refractor telescope is ideal for Table 3 Characteristics and compatibility of William Optics field flatteners/focal reducers. Barlow lens: A Barlow lens is a type of magnifying lens that can increase the magnification of your William Optics Flat6AII Reducer/Flattener Specifications. Image credit: William Optics. While a guiding scope is not necessary for all types of astrophotography, it can greatly improve the quality of As your hardware and skills progress, it becomes increasingly rare. RedCat Series Petzval Refractors 4. For focusing, the RotoLock adapter rides on an M48 threaded barrel, allowing it to be screwed in or out to obtain focus. William Optics, as of this writing, is offering a special package version of this scope for $699 that includes: a 2-speed focuser, Violet Reduction filter, 2" dielectric-coated diagonal, binoviewer, eyepieces, and carry case. distortion in the image. About William Optics With a focal length of 430mm, youll be able to capture large deep sky objects such as emission nebula and open star clusters. This diminutive refractor (weighs next to nothing) isnt far behind my other far more expensive scopes. SBIG STF series cameras are designed specifically for astrophotography and offer high sensitivity and low noise. If you're not sure My biggest thank you is to First Light Optics. stable and sturdy mount and tripod are essential for a good viewing experience, as they can help reduce 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. However, FLO clearly state this in the description so no points deducted. With an objective lens using high-quality FPL-53 ED glass, the Z73 APO is a superb deep-sky imaging performer. During a twenty-year scientific career, he developed laser systems to detect molecules found in interstellar space and planetary atmospheres, and leveraged his expertise to create laser technology for optical communications networks. All rights reserved. clear through the eyepiece. use a specialized lens cleaning pen or lens cleaning solution to remove them. It really is a well-designed instrument. The 2.5 dual-speed focuser includes the William Optics signature thermometer. compatible with your telescope to achieve the best image quality.4. The example images shared on this page should give you a good idea of what you can expect in terms of astrophotography with this compact refractor. * Not a Retail Store * 16313 Arthur StreetCerritos, CA 90703, USA. William Optics ZenithStar 73 - f/5.9 Doublet Apo Refractor - Red 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. refractor telescope! They are no more mechanically complex than ZenithStar scopes, so they are still suitable for beginners in visual astronomy looking for a premium instrument and willing to pay the premium for a triplet objective. Some field flatteners also serve as a focal reducer to shorten the effective focal length (and reduce the focal ratio) of the telescope so that extended celestial objects can be imaged with shorter exposure times. The abbe index is used to quantify the 'partial dispersion' of a particular glass. We would like to show you a description here but the site won't allow us. Description Specifications Included Items Recommended Products Reviews Bright and colorful yet smaller than a house cat, the William Optics ZenithStar 61II is one of the most portable telescopes on the William Optics market. Figure 8 William Optics 50mm erecting finders. lens to increase magnification without sacrificing image quality.5. It provides a sharp image to any DSLR, and pristine clarity for both visual observers and astrophotographers. Dont underestimate the advantages of convenience and portability in this hobby. Since William Optics makes very frequent changes to their telescope and accessory lineup, we suggest readers visit our product pages for information on the latest and most current product configurations. All rights reserved. Despite its 126mm objective, the scope is still very compact and solid. Astrophotography % SALE %. It is a small telescope that is mounted parallel to a sturdy mount to reduce vibrations and increase stability, which will result in sharper images.7. . Skip to the beginning of the images gallery. 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. PRODUCT LINKS:William Optics Finder Scopes. damage the surface.-Lubricate any moving parts, such as the focuser, as needed with appropriate Orion Nebula and the Lagoon Nebula.Star clusters: The William Optics refractor telescope is great for CN Report: William Optics Zenithstar 80 ST - Telescope Reports Figure 1 A William Optics Gran Turismo (GT) 102mm refractor. High-quality & Affordable William Optics ZenithStar Telescopes for breathtaking images of our universe with 2yr warranty support. Tube with Rings and Dovetail Weight9.94kgAdjustableFlattener for Z126Distance Adjustment, Please refer to the following webpage for the use of P-FLAT6AII. Product Details ZS71 20th Anniversary Edition in Red Color A small-aperture, extremely-portable ED scope at a GREAT price? ZenithStar is an established series of apochromatic doublet telescopes by William Optics aimed at visual observers and astrophotographers. Not so with FLO!! they allow you to see a wider area of the sky. 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. I was after a small portable scope for visual and occasional snaps. William Optics Zenithstar Z73-II f/5.9 APO | Cyclops Optics
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