This “ED” at the end of the name floods our minds with a horde of outrageous and dangerous thoughts. . Very recently, Sky-Watcher decided to produce its own field flattener for this scope: the Evoguide 50ED Field Flattener, and this is what I personally use. And sometimes, to win, you have to think out of the box. But if you can deal with those limits, then the Evoguide is a valid, budget alternative to the William Optics Redcat Z51 and other short focal refractors. Sky-Watcher Evoguide 50mm ED Guidescope The new SkyWatcher Evoguide 50 ED is a truly powerful guidescope. Instead, the Evoguide 50ED weighing only 865gm can comfortably sit on a tracker like the Sky-Watcher Star Adventurer PRO, with room to spare for more equipment. Now, it is time to answer the questions that keep astrophotographers on a budget like myself awake at night (at least during the cloudy ones :P): is the Evoguide 50ED any good at wide-field astrophotography? Both scopes are very well made, with the body in aluminum and smooth focuser. Thanks to the Ohara glass lenses, it is difficult to have color fringing around the Moon. While the scope can be used with a DSLR camera, once you put the field flattener in, you don’t have enough backfocus left to achieve focus with your DSLR. The view on the Moon is excellent, crisp and bright. Enjoy this blurred image I have prepared to give you a sneak peek into what the Evoguide can do when it is not busy guiding . Build quality is a close call, but I give a slight advantage to the Redcat. With The Evoguide, Do I Need To Guide My Mount? With two ED Ohara glass lenses and one of those is a S-FPL53! The strong field curvature typical of guiding scopes is only visible at the edge of the frame in the form of a soft image. 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. Für eine exakte Ausrichtung des Fernrohrs auf das Hauptfernrohr ist dieses mit Leitrohrschellen mit je 3 Stellschrauben mit Nylonspitzen ausgestattet. 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. The Challenger:  SkyWatcher Evoguide 50ED, some complaints about the quality of the field curvature corrections, Uses 2 elements optics, fully multicoated, Has a 34mm backfocus on the Evoguide with a 2mm tolerance, Suitable for mirrorless cameras and cooled/uncooled astro cameras, Flat field up to APS-C sensor size (Image circle 27mm), Can take some filter wheel when used with monochrome astro cameras, Not enough backfocus for using with a DSLR camera, No T2 thread for rigid connection to the scope, Can be threaded on the T2 back of the Evoguide, Can be used with a 1.25” nosepiece (not included), Can’t be used with DSLR, nor mirrorless cameras, It is unclear if it can perform well on different scopes. But those two considerations aside, there is nothing else we can say that is true and general in absolute. Bummer, because the images look very promising to me. If only we could flatten the field …. So, no DSLRs with the Evoguide and at the moment, there is no way around this. I prefer the Redcat solution here. To answer those questions, let’s discuss the different types of astrophotography you can do with the Evoguide 50ED and its results. With in-camera image stabilization, it is not difficult to snap good moon shots handheld with the Evoguide. NOTE: To be as objective as I can (particularly since I still suck at the editing), I have only stacked, calibrated, and auto-stretched in Astro Pixels Processor my deep sky images. For a little more than ⅓ the price of the Redcat, the Evoguide 50ED looks like a real bargain, even when adding the cost of the much needed field flattener. Why should anyone go through the trouble of correcting a guiding scope’s strong field curvature and adding a precise and easy to operate focuser, when all people need from it are decent enough stars at the center of the frame in order to successfully guide their imaging equipment? Ask a Question Add To Wishlist Send To Friend. 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. Usually, guiding scopes are as useful as they are boring, but while the Sky-Watcher Evoguide 50ED is a guiding scope, it is an exciting one! He is most interested in deep sky photography with low budget equipment and in helping beginners along their journey under the stars. With the Starizona EVO-FF field flattener, developed specifically for being used with short focal refractors, the Evoguide begins to shine! The mounting rings and foot are in aluminum and the collimation thumbscrews have a knot to keep record of how much the screws must be screwed in to realign the Evoguide to the desired direction with respect to the imaging scope. With a focal length of 242mm it has a very fast focal ratio of just f/4.8. And, with a dedicated flattener, the Evoguide 50ED is capable of delivering great deep-sky images. 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. The prims rail is included in the latest version of the Evoguide, and it is the only difference from the previous one. Is this guiding scope a valid budget alternative to something like, say, the highly regarded William Optic Redcat? A Guiding Scope, A Finder Scope, A spotting Scope, A Grab & Go Telescope And A Telephoto Lens: 5 devices in 1, Alternative Sky-Watcher Scopes To The EvoGuide 50ED, Tecnosky Sharp Guide 50 V2 Mini Guide Scope, Sky-Watcher Evoguide 50ED: Things To Consider Before Buying One, Evoguide 50ED vs RedCat 51 for wide-field astrophotography, Apochromatic doublet with 2 Ohara ED glass lenses, one of which is a S-FPL53, Can’t focus with a diagonal and an eyepiece for visual observations. A few days ago, I was even able to use my Evoguide to photograph the sunspot 2776, one of the first in this new Solar Cycle. In the meanwhile, here is my video review with a few extra bits of info. Corrections are amazing with the use of ED glass, colours are true and contrast is superb. You are on a tight budget. It comes complete with a dovetail bar and mounting rings with collimation screws and dovetail bar. This MUST be a good imaging scope too, mustn’t it? You could easily object that it is a fact that apochromatic refractors are much better at astrophotography than achromatic ones. Telescopes like the Sky-Watcher Evostar 72ED can be used on a tracker, but they really are better suited for larger mounts. The Evoguide is capable of delivering great wide-field, deep-sky astrophotography images. Most of the time I am on my knee while looking for it in tall grass with a red light… grrr. Scope: 50mm / 242mm CCD: 1.46° x 1.15° Barlow/Reducer: None Binned: 1x1. Let’s see this image in a bit more detail, by considering 100% crops of a region near a corner of the frame and near the center. The collimation screws also have a nylon tip so as not to scratch the Evoguide. If you click a link on this page, then go on to make a purchase, we may receive a commission but at no extra cost to you. I didn’t go further with editing the images and have not cropped them. Well… ok! At half the price of the Evoguide, the Orion 60mm Guide Scope is an affordable 60/240 f/4 guiding scope. With the 40mm extension tube removed, the available backfocus is 60mm, enough for a DSLR camera.