Sharpstar 61EDPH III 61 mm f/5.9 Triplet Apochromat

Sharpstar 61EDPH III 61 mm f/5.9 Triplet Apochromat

The 61EDPH series has long been popular with astrophotography amateurs, in order to have a better user experience for users, Sharpstar has optimized the 61EDPH II and launched the 61EDPH III. The 61EDPH III has more diverse functions and greater performance. It is a great choice that can´t be missed by astrophotographers.

The 61EDPH III still has high-quality optical standards like before and adopts an air-spaced triplet APO design. Compared to the 61EDPH II, it upgraded to two pieces of low dispersion ED glass for more excellent imaging performance. It not only can be applied to visual observation, but also can provide higher-quality astrophotography. 61EDPH III has a focal length of 360 mm, a focal ratio of 5.9, and supports the 44 mm full-frame image circle. It is a high-quality portable telescope.

The 61EDPH III upgraded the handle of the 61EDPH II to a multifunctional handle, which provides an additional universal Vixen style finder base. In addition, the 61EDPH III is equipped with a 200 mm long Vixen style dovetail plate, easier to connect to the equatorial mounts and accessories, and makes the OTA easier to balance on the mount. The appearance has smooth and natural lines, with the classic red and white color scheme, very simple and generous. The tube uses high-quality CNC machining, high-grade surface painting, and polished oxidation, elaborate and durable.

An optional full-frame flattener and a full-frame reducer are available for the 61EDPH III, providing users with more options:

The special full-frame flattener: One end of the flattener features an M68×1 male thread to connect to the focuser drawtube, the other end of the flattener has an M48×0.75 male thread with built-in 2" filter thread. The back focus is 55 mm. If it needs to be extended, the flattener can be split to reveal an M54×0.75 female thread, and the back focus becomes 81.5 mm. The flattener adopts an air-spaced triplet structure, the peripheral light reduction control is excellent, can effectively improve the curvature of the field, improve the corner image quality, and reduce aberrations, so that users can take clearer astronomical photos.

The special full-frame reducer: One end of the reducer features an M68×1 thread to connect to the focuser drawtube, the other end of the reducer is M48×0.75 has an M48×0.75 male thread with built-in 2" filter thread. The back focus is 55 mm. If it needs to be extended, the reducer can be split to reveal an M54×0.75 female thread, and the back focus becomes 75 mm. The reducer adopts an air-spaced quadruplet structure, supporting full-frame imaging. With the reducer, the focal ratio of 61EDPH III reduced to f/4.5 and the focal length reduced to 270 mm, is the first choice for deep sky astrophotography.

The f/5.9 61EDPH III has comprehensive upgrades on the objective, exterior design, and accessories, it is a telescope with high performance and versatility to meet the imaging needs of different users and provide a better photography experience.

Technical Information

Teleskop-Service has collected a lot of helpful information about refractors and provided it in English as a PDF file: refractors.pdf

Testimonial from our customer Bernd G.

"The very simple conclusion to the 61 EDPH-III: A telescope that is really fun! A crisp image all the way to the corners! And that even at 274mm with the full-frame Canon 6Da!
I am absolutely thrilled with the performance of this telescope and can really highly recommend it! On the photo of SH2-119 even the planetary nebulae We2-245 and Outters 5 are visible in detail. A really incredibly great optical performance for this "little thing"!
Also in the handling the 61 EDPH-III shows itself really uncomplicated. It is mechanically very solid and elaborately built and also offers a generous 360° rotation. It is easy and safe to use and keeps focus even when rotating.
What I find really amazing is also the high temperature stability of the focus and the color fidelity of the lens. Even at 274mm and full frame, I don´t detect any color distortion in the corners.
The Sharpstar 61 EDPH-III has been pleasantly easy to use so far. Even when using narrow band filters, the focus was straightforward to adjust manually.
It has become a faithful companion in a very short time!"

Image: SH2-119 "Clamshell Nebula" in the constellation Swan
Location: Emberger Alm, Carinthia (AT)
Date: 19.8.2023
Exposure time: about 3 hours (18x5min Ha and 17x5min OIII)
Setup: Sharpstar 61 EDPH-III (360mm) on EXOS-2 with ASIAir and ASI294MM and 3nm Ha and OIII Astrodon filters; Guiding: ASI120mini on ArteSky 32/130mm guiding scope
Image processing: DeepSkyStacker, PixInsight

Safety informations: PDF Download