What a pleasure it is to have FLO and staff to available to discuss technical queries and order items with complete confidence. William Optics DSLR-M48 Ring Adapter. Quick View. WO Star 71 Limited Blue Edition (guiding ring included) [WO-A-WO71IIBU] $1,218.34 USD WO-A-F151. Everything is metal and has a real good feel. Add to Basket: In stock! Color versions of many figures and movie clips supplementing the text are available at www.cambridge.org/9780521853712. But I undid the three small screws and then you can unscrew the whole piece, quite simple once you know.What is also unfortunate is the soft carry case. Shipping options and prices may vary depending on the total value of your order. Click the button below to add the William Optics Zenithstar 73 f/5.9 APO (Free Soft Carrying Bag) to your wish list. Zenithstar 73 is a greatly versatile and portable refractor telescope for beginners and veterans alike. Simply fill in the form below and we will get back to you as soon as we can! © 2021 The Widescreen Centre. Rother Valley Optics Ltd are authorised and regulated by the Financial Conducts Authority. Zenithstar 73 APO (A-Z73III) Regular price. (Tues - Fri) As your focal length and payload capacity increases, so do the importance of polar alignment and balance. William Optics ZenithStar 73mm F/5.9 Imaging APO Refractor Telescope Astrophotograph. Before I make the purchase I would like to see an un-cropped full frame photo, processed … William Optics: New ZenithStar 73 , F/5.9 FPL53 doublet APO in Blue , 2.5" R&P focuser with Vixen style dovetail , Mounting rings and Guiding rings. 01909774369sales@rothervalleyoptics.co.uk. Be the first to Write a Review for this item! Though there are a few minor points I encountered. $713. Free Shipping. Supplied with mounting rings, CNC carry handle, Bahtinov mask, Vixen-style dovetail bar and soft case. Add to cart. Reproduction of the original: Pleasures of the telescope by Garrett Serviss $218.00. Now onto the important bits -- As a wide field telescope for astrophotography this scope is excellent. 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). Australia's leading William Optics authorised factory direct importer! Of course a 60 mm refractor, in this case a short ratio APO (and very portable), will be a nice instrument for visual observation. What is a little confusing is how you get the flattener on at first. William Optics. You are free to manage these via your browser settings at any time. Vendor William Optics Regular price $ 878.00 Sale price $ 878.00 Sale. Zenithstar 81 APO (A-Z81) Zenithstar 81 APO (A-Z81) William Optics. Everything is metal and has a real good feel. This scope series is even capable of handling full frame sensors. The Zenithstars 73 first light subs look very good. William Optics ZenithStar 73mm APO – Purchased from First Light Optics, Exeter, UK. The William Optics Zenithstar 73 f/5.9 apochromatic refractor features an air-spaced multicoated doublet objective lens and the premium mechanics and finish that’s typical of William Optics scopes. The William Optics Zenithstar 73 APO has an f-ratio of F/5.9. William Optics RedCat 51 APO 250mm F/4.9 $ 1,405.00. ZWO ASI Air Pro. William Optics RedCat 71 APO. Some items that are showing as in stock are in stock at our holding warehouses not at the shop. I've had a chance to use the scope and the quality is really good. rotatable. I put in on my old AVX and the payload is fine as it was guiding through my OAG well. Online orders are despatched as normal. Somehow the story repeats itself: back in the old '50 and '60 most of the first scopes were the japanese 60 mm f/15 or more achromats. The William Optics Zenithstar 73 APO has an f-ratio of F/5.9. The ZS103 sits towards the larger end of the current Zenithstar range. The William Optics ZenithStar 73 III is a two element apochromatic refractor with a focal ratio of f/5.9 and a focal length of 430mm.Utilizing FPL-53 synthetic fluorite glass, this telescope provides excellent aberration correction.. The William Optics ZenithStar 81 mm aperture Doublet APO Refactor is an extremely versatile telescope ideal for both astrophotography and general photography. In the Box Specifications WO-L-RC51Ix Add to Cart. In Stock. Color. I am so pleased I did, what a fantastic little scope, beautiful finish and amazing image first night out. Amazing. The focal ratio of a telescope represents its light gathering ability, and the Z73 hits the sweet spot. Our rating . In Exploring the Moon, Steve unveils the history of the Moon and its various characteristics and effects on the Earth and its living creatures. This comes at a hefty price but without it chromatic aberration anywhere from dead centre is atrocious and stars near the edge look like smeared out flies on a windscreen. I like the built-in bahtinov mask. Has rack and pinion focuser, probably better at focusing and likely stronger. The William Optics Zenithstar 61 is a doublet apochromatic refractor telescope that excels in deep-sky DSLR astrophotography. SKU: William Optics Zenithstar 81 APO (Specify Color) $878.00. To double check the stock levels at the shop please contact us on 01909774369 or Vendor William Optics Regular price $ 713.00 Sale price $ 713.00 Sale. Add to Cart. Then you can come to our shop, collect your item and still get your points! Unit price / per . With the flattener the stars are good all the way to the edge. This will increase value of your equipment and show you exactly the condition and quality of the lens. Sale price. Update - the 73A flattener arrived today and as it was cloudy, raining, cold I thought I'd adjust the flattener to WO's specs (11.4 on the barrel s... Select options. William Optics 800 mm Mortar Tri-Pier – Red $ 999.00. Looks like a … The 43mm image circle when Flat73 is used covers full frame size sensor nicely. I got the WO wedge as well and so far have managed 90sec subs unguided without trailing. Rs 74100. If you live in the Scottish Highlands/Islands, Channel Islands or Northern Ireland, then a shipping surchage will apply. 5892293VAT No. Welcome to the 60 mm league! The Sum of the Parts. William Optics Zenithstar 73 III APO (11) £549.00 Add to Basket. Looks very sexy. As long as the item is above £250, finance is generally available! Having found a new passion for Astronomy only 2 years ago after a 20 year hiatus and discovering that you could actually image deep space objects from your own back yard was an opportunity I couldn’t allow to pass me by.I bought the scope as a package from RVO which included the Z73, 50mm guide scope, mounting rings, dove tail bar and integral bathinov mask. Selling a wide Range of Telescopes, Binoculars & Accessories, We use cookies on this website. This item is out of stock but you can place an order now and we’ll ship when it becomes available. A few photos to show my concerns over the balance point: Images 1 - 4 show the balance point as it was last night - very near the end of the doveta... William Optics Zenithstar 73-II f/5.9 APO (Free Soft Carrying Bag) Add to cart. SKU : WO-A-Z73IIIRD. SHARPSTAR brand new 76EDPH is the second model in EDPH series, the overall appearance of streamlined design. Add to cart. Rother Valley Optics now have a loyalty point scheme active on the website. I bought the Z73 purely on the basis of Trevor Jones’s gushing reviews and I purchased it purely for Astrophotography purposes. The William Optics Z73 is a quality piece of engineering and along with the field flattener, I'm looking forward to making the next step with the quality of my astrophotography images. All New Slide-base UniGuide 50mm Scope . Description. Comments Required. William Optics Adjustable field flattener for Z73. William Optics has earned a reputation over the last two decades for producing high quality yet affordable telescopes and accessories. William Optics Zenithstar 73 APO Telescope. Be the first to review this product . William Optics. Following in this tradition is the latest scope from William Optics, the ZenithStar 71 ED, a doublet refractor just 310mm long. Rating Required Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name. ASTRONOMERS’ OBSERVING GUIDES provide up-to-date information for amateur astronomers who want to know all about what it is they are observing. This is the basis of the first part of the book. When using a dslr, no declination balance can be achieved, because de dovetail cannot move further back because of the focuslock screw (need a secondary dovetailbar or spacerblocks for the scoperings). Color. By Pete Lawrence. Add to cart. Click here to read more. In Stock. The William Optics ZenithStar 73 APO Telescope is a high quality Apochromatic Imaging and visual use telescope with an aperture of 73 mm and a focal length of 430 mm or an f-ratio of f/5.9. 4.5 out of 5 star rating 4.5 £415 Skip to view deals. It is at our discretion what we ship outside of the UK. All New Slide-base UniGuide 32mm Scope. SharpStar 76EDPH f/5.5 Triplet APO. I have been able to focus using the diagonal from my C11, although will still look to resolve this to use a straight through eyepiece longer term, as being piggy-backed on the C11, subject to the angle of an object, its not that easy to get your eye in, but that's my issue nothing to do with the scope.It will also allow me, when Covid travel restrictions are lifted, to have a great scope to head off to darker sky areas, which I expected, from my experience under Bortle 8 skies the views will be awesome.This is truly an exceptional scope for the price and very please with this purchase.As always, great service from FLO, who have been very helpful when selecting items, so thanks guys. Designed for both astrophotography and wildlife photography, high power visual observing through the Zenithstar 73 is also hugely satisfying. Pure Fluorite offers the highest partial dispersion at around 94.99 V, Ohara FPL-53 glass is very close to Fluorite at 94.93 V and is often referred to as Synthetic Fluorite. There are a lot of features I love about the Z73, but here are the ones that really stand out. For more about how we use cookies, please see our, William Optics Zenithstar 73 III APO Refractor OTA. The focuser is precise and smooth, love it! If you however want to image vast nebulae, star forming regions and their surrounding nebulosity then this is the scope for you.I cannot say enough about this scope and even seasoned pros hold this telescope in high regard.I would pigeon hole this telescope as an upper mid range piece of equipment. "On this magical night, by the moon's candlelight every star dances with our dreams. The soft clouds drift for miles while love sleeps on our smiles and Spring carries peace on the cool flowing streams. From Nobel Prize–winning physicist P. J. E. Peebles, the story of cosmology from Einstein to today Modern cosmology began a century ago with Albert Einstein's general theory of relativity and his notion of a homogenous, philosophically ... The delivery costs for courier next day are for mainland UK only. New Adjustable Flat73A for Z73. Balance becomes increasingly important as you mount larger telescopes to the SkyGuider. You are free to manage these via your browser settings at any time. Request stock alerts and we'll let you know when the item is back in stock. I also bought the Skywatcher HEQ5 Pro mount to get me off and running.The telescope itself looks awesome (I’ve got the Red trim model) It’s rock solid, sleek, finished beautifully and is really well made. US$830.00. Add Flattener. I am using it with a ZWO EAF, fits perfectly and I now have a fully portable wide FOV lightweight rig as my big Edge HD rig is just too heavy to carry about. - posted in Refractors : Im looking at a few different telescopes, and trying to make some sense of the analysis numbers for each one. The ZenithStar 73 also comes with a 2.5" Rack & Pinion focuser and Dual Sided dovetail bar. Finish and quality has always been high on William’s priority list. Related Tags. The scope didn�t disappoint. Quick View. The objective features Ohara FPL-53 ED glass for superb control of false color and sharp, high-contrast images. 2 Rosemary Lane, Sutton nr. The brand new Fluorostar 120 APO by William Optics meets the demands of the modern astrophotographer with high quality glass, 3.3" heavy duty focuser with rotator and bahtinov mask. Soft Carry Case Included. Availability: Approximatively 10 to 14 days when on order. William Optics FLAT6AIII New Adjustable Flattener/0.8x Reducer $ 359.00. William Optics Zenithstar 73 III APO (Specify Color) $713.00. William Optics Zenithstar 73 APO. The William Optics Zenithstar 73 is an apochromatic doublet refractor telescope built for astrophotography. With an objective lens using high-quality FPL-53 ED glass, the Z73 APO is a superb deep sky imaging performer. William Optics Zenithstar 73 APO. William Optics Z73 f/5.9 Refractor uses FPL-53 glass for sharp views. However, unscrewing the mask cover from the nicely machined lens cap takes about fifty turns and is surprisingly noisy so all your neighbours and local foxes will be aware that you are at it again� The cap itself attaches like silk to the dew shield. William Optics Star 71 £1,299.00 £1,199.00. William Optics. Includes bahtinov mask. The William Optics Zenithstar 73 APO with a 50mm guide scope attached. Designed for both astrophotography and wildlife photography, high power visual observing The NEW William Optics 2019 Zenithstar 73 APO 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. I cant make up my mind which one to purchase and was looking for some comments about which one might … For more about how we use cookies, please see our. You can accumulate these points as you shop with us, then when you are over £5, you can spend them on the website! A Zygo Interferometer test and report is available on this telescope. Unit price. This is just what I have been looking for. Vendor William Optics Regular price $ 713.00 Sale price $ 713.00 Sale. William Optics Zenithstar 73 APO. William Optics Zenithstar 61II APO $ 899.00. Using this adjustable field flattener makes astrophotography with the William Optics 73 mm ZenithStar APO Refractor even better. The abbe index is used to quantify the 'partial dispersion' of a particular glass. The focuser is precise and smooth, love it! 01909 774 369sales@rothervalleyoptics.co.uk. Color. The NEW William Optics Zenithstar 73 III doubled fiber apo is a compact telescope with a 2.5 inch rack and pinion focusing device. Stunning scope that is a work of art. The 2.5" 10:1 rack & pinion focuser is smooth, stable and reliable, providing no slippage over long imaging sessions. Backfocus is adjustable up to 15 mm, and, once set, is held in place by a locking ring. William Optics Low Latitude Vixen Style Base Mount and Extension Bar $ 369.00. It apparently has a 5Kg weight capacity for imaging and the Zenithstar weighs about … As Table 3 shows, some William Optics field flatteners are fixed devices for particular telescopes like the ZenithStar 61 and ZenithStar 73. We offer 12, 24, 36 and 48 months with a fixed 15.9% typical APR. I noticed that analysis numbers for the Zenithstar 73 doublet were nearly all lower in the aberration list than the Gran Turismo 71 triplet. Designed for both astrophotography and wildlife photography, high power visual observing through the Zenithstar 73 is also hugely satisfying. Shipping options and prices may vary depending on the total value of your order. ZWO ASI 183 MM Pro Cooled Camera (Cooled to -10c) + L, R, G B or Ha,SII, OIII, filters or .