Sky-Watcher Evoguide 50mm ED Guidescope The new SkyWatcher Evoguide 50 ED is a truly powerful guidescope. It is also shipped complete with mounting rings with collimation screws on a dovetail bar. These 3D printed brackets from Astrokraken are specifically made for using the Evoguide as an imaging scope. At this point, I must be honest here: it seems thatout of the box, the Evoguide is only good for snap Moon and Sun images with your DSLR or mirrorless. But the Evoguide is also one of the most intriguing new entries in the astrophotography market: a guiding scope that is also an apochromatic doublet was previously unheard of. The above image shows the EvoGuide 50ED without (left) and with (right) the field flattener in place with a ZWO ASI294 camera (23mm diagonal sensor) The field flattener works with sensors up to APS size (27mm diagonal). What Mount Do I Need For Imaging With The Evoguide? Not being myself addicted to pixel peeping, the feeling I get is that image quality is up with expectations. Thanks to the generous backfocus, it is easy to connect a DSLR or mirrorless camera and use it as a daylight telephoto lens. Is this guiding scope a valid budget alternative to something like, say, the highly regarded William Optic Redcat? The Evoguide is shipped with a 40mm extension tube, and when mounted it will leave you with a back focus of just 20mm. This means the Evoguide is not the most comfortable spotting scope you could get, but for an occasional use is not a big problem. The Sky-Watcher Evoguide 50ED is a very nice guiding scope that can also be used as a telephoto lens for daylight photography, spotting scope for daylight observation, finder scope to help you frame the target with larger telescopes, and also a decent grab & go little telescope for Moon and wide-field observation. Aside from being smooth to operate and precise in focusing, another big plus of the focuser is that the camera does not rotate while focusing. I mostly use a QHY183M camera and filter wheel for LRGB and narrowband objects. Reviewed in the United States on June 17, 2020. To mount your DSLR or mirrorless camera, simply remove the extension tube and replace it with your own T2-camera adapter, as in the photo below. The Redcat rubberized focusing ring is a nice touch over the metallic one of the Evoguide. With a white light solar filter, you can also use the Evoguide for solar photography with some interesting results, particularly on cloudy days. You can connect the camera to the Evoguide either by directly screwing it on the standard T2 thread at the back of the instrument, or by inserting it as an eyepiece by using a 1.25” nose piece mounted on the camera. Thanks to the maximum usable magnification of about 100x, by pairing a planetary camera with a 2x barlow lens, you can get some decent images of Jupiter and Saturn. While we are all after getting nice images of the many wonders of the Universe, personal choices, opportunities, and personal skills put us on different paths and strategies. Andrea Minoia works as a researcher in a Belgian university by day and is a keen amateur astrophotographer by night. Sure, the aperture is small and there are photographic lenses with longer focal length and larger lens diameter, so: why bother with the Evoguide at all? The Evoguide is delivered with all you need to guide (guiding camera excluded) and more. You can find it here: Evoguide 50ED vs RedCat 51 for wide-field astrophotography. To take full advantage of the Evoguide, you need to accept its limits: If you cannot work around its limits, then the Evoguide is not the right instrument for you, and you should look elsewhere. With the Starizona EVO-FF field flattener, developed specifically for being used with short focal refractors, the Evoguide begins to shine! This MUST be a good imaging scope too, mustn’t it? To answer those questions, let’s discuss the different types of astrophotography you can do with the Evoguide 50ED and its results. The Sky-Watcher Evoguide 50ED is an amazing guiding scope that can double as a daylight telephoto lens for your DSLR or mirrorless camera, as a spotting scope, as a finder scope and as a portable wide-field telescope. For wide-field DSO observations, pop in a 32mm Plossl eyepiece for a staggering 6.6º field of view. Most of the time I am on my knee while looking for it in tall grass with a red light… grrr. It is larger than my ZWO 30/F4 MiniScope, but this is not a deal-breaker, particularly if you need to guide big telescopes. 5.0 out of 5 stars EVOGUIDE 50ED. Mit einer Brennweite von nur 242 mm ist es sehr lichtstark und ideal für Großfeldbeobachtungen geeignet. So, where does the Evoguide stand on this? The 31.8mm ring focuser allows you to use the Evoguide ED50 both as a finder and as a guide telescope, in fact it is equipped with a T2 thread to allow the attachment to most of the driving and shooting cameras on the market. With a 242mm focal length, when coupled with a classic guiding camera such as the ZWO ASI224MC, it provides an optical resolution of 3.2 “/px, and can be used to successfully guide long focal telescopes, up to 1000mm in focal length. Tweet: About this product. While being as large as the Earth, with the Evoguide this sunspot is little more than a speck, but is still nice to see. Being a quadruplet with a petzval design, it naturally removes not only the chromatic aberrations but also the field curvature of the instrument. If we really want to find a defect in the focusing mechanism, I could mention there is a very small lag when reversing the focusing direction, but it is more anecdotic than a real minus. This is the second and last part of my detailed hands-on review of the Sky-Watcher Evoguide 50ED. I mostly use a QHY183M camera and filter wheel for LRGB and narrowband objects. With a barlow lens 2x and a short focal eyepiece, you can see a good deal of details on the lunar surface and you can even enjoy a nice view of Jupiter and Saturn. The collimation screws also have a nylon tip so as not to scratch the Evoguide. Please note that both the Starizona EVO-FF and the Sky-Watcher Evoguide 50 ED Field Flattener do not reduce the focal length of the Evoguide. Yet, on the internet, there are some complaints about the quality of the field curvature corrections, but I would hardly consider this to be a deal breaker for most of us. Good guiding scopes with apertures from 30mm to 60mm are available in the catalog of many major brands: Orion, ZWO, TS, William Optics, etc., but none of them is an apochromatic doublet with Ohara ED glass as the Sky-Watcher Evoguide. As said, the Sky-Watcher Evoguide 50 ED is primarily intended as a guiding scope that has the rather unique feature of using ED glass to produce tighter stars for better guiding performances. Now the EvoGuide and other small refractors can be used as portable, wide-field imaging telescopes with great results. So, no DSLRs with the Evoguide and at the moment, there is no way around this. With The Evoguide, Do I Need To Guide My Mount? I also like the possibility offered by the Redcat of precisely rotating the camera for better framing and composition (particularly for mosaics). Verified Purchase. Granted, the Evoguide is not a 20” dobsonian telescope, but it is a brilliant occasional Grab & Go telescope. Andrea Minoia works as a researcher in a Belgian university by day and is a keen amateur astrophotographer by night. Lens diameter: 50mm | Focal length: 242mm | Aperture Ratio: f/4.8 | Max useful magnification: 100x | Optical Design: Doublet | Glass types: Ohara S-FPL53 | Field Corrector: Available as accessory | Backfocus: 60mm | Camera connection: M48x0.75 thread or 1.25” nosepiece | Filter size: 1.25” | Focuser: Helical | Camera 360º Rotation: Yes, (nosepiece only) | Base plate: Vixen compatible | Connection to telescope: Bracket for standard finder shoe | Tube length: 220mm (260mm with extender) | Tube weight: 865gr | Tube material: Aluminium | Included accessories: 40mm extender, stop ring for 1.25” eyepiece, collimation rings. The goal is set: create nice images, but the path that leads you there is not. Mind, though, that you will not be able to achieve focus with a diagonal and the eyepiece. It has a focal length of 242 mm (f/4.8 focal ratio) and comes complete … Still, I did have the chance to use my Evoguide with the Evoguide 50ED Field Flattener, and personally, I found the image quality to be very promising, particularly for the money. As a guiding scope, there are many alternatives out there. But those two considerations aside, there is nothing else we can say that is true and general in absolute. Frequently bought with this product: Sky-Watcher EvoGuide 50ED Guidescope + £189.00. He is most interested in deep sky photography with low budget equipment and in helping beginners along their journey under the stars.
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