Priced at $1,525, the StellaMira 86mm ED Quadruplet f/7 Flatfield Refractor Telescope presents an outstanding value proposition for astrophotographers seeking a premium flat-field refractor without venturing into high-end professional pricing tiers. It belongs to a class of telescopes designed specifically for imaging rather than casual visual observation, with a carefully engineered optical system that caters to the technical needs of photographers working with everything from APS-C to full-frame camera sensors. At its core, this telescope is defined by its 86mm aperture and a 602mm focal length, which together yield a moderate f/7 focal ratio. This ratio strikes a careful balance between light-gathering power, image scale, and optical correction, making it ideal for deep-sky imaging where sharpness across the frame and color fidelity are paramount.
The optical design is one of its most distinguishing features. This is a true quadruplet refractor, consisting of four elements arranged in an air-spaced configuration, two of which are made from extra-low dispersion (ED) glass. The presence of dual ED elements is especially noteworthy, as many competitors in this price range offer only one ED lens or sometimes none at all. These ED components are instrumental in virtually eliminating chromatic aberration, providing pinpoint stars without the fringing or color halos that plague lesser designs. The entire optical assembly is fully multi-coated to maximize light transmission and suppress internal reflections, ensuring excellent contrast and minimizing ghosting in bright star fields.
A significant highlight of the StellaMira 86mm is its built-in field flattener. This integrated element corrects for field curvature, a common issue in many refractors, ensuring that stars remain tack-sharp from center to edge, even on large sensors. Because the field flattener is internal and optically matched, users do not have to worry about calculating or maintaining a precise back-focus distance. This is a major convenience for astrophotographers, especially those who frequently switch between different cameras or setups. The telescope also supports an optional 0.8x reducer/flattener, designed to shorten the focal ratio to f/5.6 and expand the field of view, all while retaining edge-to-edge flatness across sensors up to APS-C size. This option adds versatility, allowing users to optimize the telescope for either deeper, narrower targets or wide-field surveys.
The mechanical build of the telescope reflects the same attention to detail found in its optics. The body is constructed from high-quality aluminum, with a retractable dew shield that helps reduce stray light and condensation during long imaging sessions. The entire structure is robust yet manageable, with a tube length of 46 cm when the dew shield is retracted and 55.5 cm when extended. The diameter of the optical tube is 107 mm, while the dew shield extends this to 123 mm. These proportions contribute to a compact form factor, making the telescope easier to transport and mount compared to longer instruments of similar aperture.
Weight is always a consideration when choosing imaging equipment, and the StellaMira 86mm delivers a solid yet not overly burdensome profile. The bare optical tube weighs in at 4 kilograms, and when outfitted with its included accessories, tube rings, dovetail bar, and handle, the total climbs to 5.8 kilograms. This places it well within the carrying capacity of many mid-range equatorial mounts, such as the Sky-Watcher EQ6-R or iOptron CEM40, making it highly accessible to amateur astrophotographers upgrading from beginner gear.
The focuser on the StellaMira 86mm is another area where it outperforms expectations. It is equipped with a large 3.2-inch rack and pinion focuser, known for its strength and smooth operation. The focuser is dual-speed, offering a coarse adjustment for quick focusing and a 1:10 fine focus knob for precise tuning, which is critical for achieving perfect sharpness with high-resolution imaging sensors. A 360-degree rotatable Camera Angle Adjuster (CAA) is built in, allowing users to frame their targets exactly as they wish without having to loosen the camera or telescope. This rotation mechanism includes locking screws to prevent image shift once the orientation is set.
Astrophotographers using dedicated astronomy cameras or DSLRs will appreciate the included array of adapters, M68, M54, and M48 threads are provided, accommodating a wide range of imaging setups. The focuser drawtube has a generous 85mm of travel, which supports most imaging trains without requiring extension tubes. Additionally, the scope comes with both 2-inch and 1.25-inch compression rings made of non-marring brass, ensuring secure connections that won’t damage delicate optical accessories.
Physically, the telescope arrives ready for immediate mounting and field use. The included CNC-machined aluminum tube rings not only offer rigidity but also add aesthetic polish. A Losmandy-style dovetail bar is provided, offering a secure fit with a wide variety of mounts. The matching carry handle is not merely for transport, it also includes an integrated Synta-style finder shoe for attaching guide scopes or other accessories. A second Synta shoe is located on the rear of the tube, giving users options for mounting a finder or auxiliary gear in different positions. The dovetail, tube rings, and handle all feature additional M6 threaded holes, adding flexibility for those who need to attach dew heaters, mini-PCs, or power hubs directly to the optical tube.
Protection during storage and transport is provided by a custom aluminum case, which is fitted with precision die-cut foam. This foam is shaped specifically for the StellaMira 86mm and all of its included accessories, offering peace of mind when moving the equipment between home and observing locations. This level of attention to storage and presentation is uncommon in this price bracket, where many manufacturers either charge extra for cases or supply only soft-sided options.
In terms of accessories, everything needed to begin imaging is already in the box. The kit includes the telescope optical tube assembly (OTA), Losmandy-style dovetail, tube rings, handle with Synta-style clamp, and the suite of camera adapters in M68, M54, and M48 thread sizes. A 2-inch to 1.25-inch adapter is also provided, allowing the use of smaller visual or imaging components. While a diagonal or eyepiece is not included, the telescope is fully capable of supporting visual astronomy with the addition of those standard accessories. The performance in visual mode is excellent, delivering crisp, high-contrast views of planets, the Moon, and deep-sky objects, thanks to its precision ED optics and well-controlled aberrations.
What sets the StellaMira 86mm apart from similarly priced instruments is not just its optical pedigree but the completeness of the package. Many competing quadruplets at this price either forgo the second ED element, omit an integrated flattener, or cut corners on mechanical components like the focuser and accessories. By contrast, the StellaMira offers a truly complete imaging solution that is flat-field ready out of the box, with no need to experiment with external flatteners, spacer rings, or guesswork about back-focus. The optional 0.8x reducer only adds to its utility by expanding its imaging footprint while accelerating acquisition times.
Another noteworthy aspect of the StellaMira product line is the quality control process. Each telescope is QC-checked in the UK before shipping, ensuring that collimation, optical alignment, and overall fit and finish meet stringent standards. This adds confidence for prospective buyers concerned about receiving a dud unit or one requiring extensive adjustment.
Ultimately, for astrophotographers seeking a mid-range instrument that does not compromise on optical quality or mechanical integrity, the StellaMira 86mm ED Quadruplet is an easy recommendation. Its price point of £1,199 makes it accessible to advanced amateurs while still offering performance and features that rival more expensive alternatives. From its ED quadruplet design and built-in field flattener to its premium focuser and accessory suite, it represents a thoughtful and meticulously engineered solution tailored to the needs of modern astrophotography. Whether used with a cooled monochrome camera for deep-sky narrowband imaging or a DSLR for wide-field Milky Way compositions, it promises flat, crisp, and color-pure results that hold up under close inspection. Combined with its robust build, versatile mounting options, and transport-friendly form factor, it stands as one of the best turnkey options in its class.
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