Sharpstar 61EDPH III 61 mm f/5.9 Triplet Apochromat

The 61EDPH Ⅲ not only can be applied to visual observation, but also can provide higher-quality astrophotography.

♦ Air-spaced triplet apo

♦ 61 mm aperture

♦ 360 mm focal length

♦ Focal ratio f/5.9

♦ Flattener and 0.75x reducer optional, therefore versatile

♦ Large focuser with M68 male thread, 2" adapter, 1.25" adapter and 360° rotation

♦ 44 mm image circle, suitable for full-frame size sensors

♦ Lightweight (1.92 kg) and compact (272 mm long, 75 mm tube diameter, 87 mm maximum diameter, 144 mm height) - suitable for air travel

♦ Comes with many mounting options


 

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 61EDPHI Ⅱ and launched the 61EDPH Ⅲ. 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 61EDPHⅡ, 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 61EDPHⅡ to a multifunctional handle, which provides an additional universal Vixen style finder base. In addition, the 61EDPHⅢ is equipped with a 200 mm long vixen 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 draewtube, 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.

 

Objective lens:	Air-spaced triplet apo（including two ED glasses）
Aperture:	61 mm
Focal length:	360 mm (270 mm with reducer)
Focal ratio:	f/5.9 (f/4.4 with reducer)
Limiting visual magnitude:	10.7
Resolution:	1.93 arc seconds
Image circle:	44 mm
Focuser:	2.5" dual-speed rack-and-pinion precision focuser, 360 rotatable
Back side connections:	M68x1 male thread, 2", 1.25"
Additional back side connection with flattener or reducer:	M48 male thread, M54x0.75 female thread, with increased back focus
Back focus with flattener or reducer and M48x0.75 connector:	55 mm
Finder shoe:	For Vixen type finder brackets
Mounting options:	Vixen style dovetail bar (200 mm) with 1/4-20 photo thread and 6 M6 threads, handle with ARCA-SWISS slot
Tube material:	Aluminum
Tube length with cap:	272 mm（dew shield retracted）
Tube outer diameter:	75 mm
Dew shield diameter:	82.6 mm (87.2 mm with cap)
Telescope height:	144 mm
OTA weight (with rings and dovetail):	1.92 kg

in the box:
♦ SharpStar 61EDPH III Triplet APO Refractor
♦ Eyepiece adapters 2" and 1.25"
♦ Covers
♦ Finder Shoe
♦ Tube Ring
♦ Dovetail Plate
♦ Handle