星河科研社为锐星光学Sharpstar / Askar的香港独家总代理，Sharpstar新推出的61EDPHⅢ摄星镜、61EDPHⅢ f/4.4专用全幅减焦镜及61EDPHⅢ专用全幅平场镜现已接受eshop预订。

Galaxy Scientific Group is Hong Kong sole dealer of Sharpstar and Askar. The new Sharpstar 61EDPH III Triplet APO, 61EDPHⅢf/4.4 Full-Frame Reducer and 61EDPHⅢ full frame flattener are available on eshop for pre-order now.

Sharpstar 61EDPHⅢ摄星镜，定价HK$4280。

Sharpstar 61EDPH III Triplet APO , priced at HK$4280.

Sharpstar 61EDPHⅢ f/4.4专用全幅减焦镜，定价HK$1480。

Sharpstar 61EDPHⅢ f/4.4 Full-Frame Reducer , priced at HK$1480.

Sharpstar 61EDPHⅢ 专用全幅平场镜，定价HK$1480。

Sharpstar 61EDPHⅢ full frame flattener , priced at HK$1480.

全新F5.9 61EDPH Ⅲ在主镜镜片、外观设计及配件设备三个方面进行了全面升级，是一款承载高性能和通用性的望远镜，能够满足不同用户的拍摄需求，提供更加优质的拍摄体验。主镜采用三片式全分离APO设计，相较于二代升级为两片低色散ED玻璃，拥有更加优异的成像表现，不仅能够应用于目视观测，而且能提供更高质量的天文摄影。61EDPH Ⅲ焦距360mm，焦比F5.9，全幅表现优异，可支持44mm影像圈。

The new F5.9 61EDPH Ⅲ has comprehensive upgrades on the primary lens, exterior design, and accessories, it is a telescope with high performance and versatility to meet the shooting needs of different users and provide a better shooting experience. The new 61EDPH Ⅲ adopts a triplet air-spaced 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 360mm, a focal ratio of 5.9, and supports the 44mm full-frame image circle.

61EDPH Ⅲ将二代的流线型提手升级成了多功能把手，可以接驳市面通用VIXEN规格的寻星镜底座。此外将VIXEN窄版鸠尾板延长至了200mm，更容易接驳市面上各种赤道仪以及附件，有利于镜筒在赤道仪上做平衡。

The 61EDPH Ⅲ upgraded the handle of the 61EDPHⅡ to a multifunctional handle, which can be connected to the universal vixen-style finder base. In addition, the 61EDPHⅢ is equipped with a 200mm long vixen dovetail plate, easier to connect to the equatorial mounts and accessories, and makes the OTA easier to balance on the mount.

61EDPH Ⅲ专用全幅减焦镜，一端螺纹是M68×1，连接主镜调焦器；另一端螺纹为M48×0.75，并内置2英寸滤镜螺纹，后截距为55mm，如需扩展，可以旋下接口露出M54×0.75外螺纹，后截距变为75mm。减焦镜片为四片式全分离结构，支持全画幅摄影，减焦比F4.4配合61EDPH Ⅲ，焦距缩至270mm，是深空领域天体摄影的首选。

The special full-frame reducer of 61EDPH Ⅲ: One end of the thread is M68 × 1, connected to the primary lens focuser; the other end of the thread is M48 × 0.75 and has a built-in 2" filter thread. The back focus is 55mm. If it needs to be extended, the adapter can be screwed down to reveal the M54 × 0.75 male thread, and the back focus becomes 75mm. The focuser adopts a quadruplet air-spaced structure, supporting full-frame imaging. With the reducer, the focal ratio of 61EDPHⅢ reduced to F4.4 and the focal length reduced to 270mm, is the first choice for deep sky astrophotography.

此外61EDPH Ⅲ还配备了专用全幅平场镜，为用户提供了更多选择。61EDPH Ⅲ平场镜，一端螺纹是M68X1，连接主镜调焦器；另一端螺纹为M48X0.75，并内置2英寸滤镜螺纹，后截距为55mm，如需扩展，可以旋下接口露出M54×0.75内螺纹，后截距变为81.5mm，平场镜片为三片式全分离结构，周边减光控制优异，能有效改善像场弯曲，提高边缘像质，减小畸变，使使用者能拍出更加清晰专业的天体照片。

In addition, 61EDPH Ⅲ is also equipped with a special full-frame flattener, providing users with more options. The flattener: One end of the thread is M68 × 1, connected to the primary lens focuser; the other end of the thread is M48 × 0.75 and has a built-in 2" filter thread. The back focus is 55mm. If it needs to be extended, the adapter can be screwed down to reveal the M54 × 0.75 male thread, and the back focus becomes 81.5mm. The flattener adopts a triplet air-spaced 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.