Compact Reticle Eyepiece for Astrophotography

The SV152 Upgraded Reticle Eyepiece is an important tool for centering guide stars and astrophotography target objects. This premium 1.25" wide-angle eyepiece from the Observation Discovery & Exploration brand features an illuminated single crosshair reticle that greatly simplifies the process of centering celestial objects in the eyepiece. This is invaluable for achieving more accurate go-to alignment and tracking.

The wide 70-degree apparent field of view allows users to find objects and alignment stars more easily compared to shorter focal length eyepieces. Additionally, the comfortable 16mm eye relief makes it easy to locate and focus on target objects. This makes the SV152 an excellent choice not just for astrophotography, but for a variety of other applications as well.

The illuminated reticle can be removed, allowing the eyepiece to be used as a standard non-illuminated unit. The reticle is laser-engraved rather than silk-screened, ensuring it does not diverge at high magnifications and remains easy to track and locate.

Thoughtful design features include removable rubber eyepiece caps to keep the optics clean, a smooth and stable focusing ring with a non-slip rubber grip, and an internal matte thread to reduce stray light entering the eyepiece. The fully multi-coated 5-element, 4-group optical system provides bright, sharp, and high-contrast images.

Specifications of the SV152 include: - Eyepiece port: 1.25" - Focal length: 20mm - Lens Coating: FMC - Reticle: Single Crosshair - Lens Groups: 4 / 5 Elements - Eye Relief: 16mm - Field of View: 70 Degrees - Field Stop: 25mm - Thread: M28.5 x 0.6 - Material: Metal - Eyecup Type: Rubber - Illuminator Type: LED, Brightness Adjustable - Power: 2 x 1.55V Button Cells (AG5 Alkaline) - Net Weight: 221g / 7.8oz - Dimensions: 75 x 53 x 102mm

The adjustable brightness of the external illuminator allows users to optimize the visibility of the crosshairs, with relatively low power consumption in the lower brightness settings. This helps extend the lifespan of the battery-powered illuminator.

The standard 1.25" filter thread makes the SV152 compatible with a wide range of astrophotography and astronomy equipment. The internal matte threading effectively suppresses reflections of stray light, delivering a bright, high-contrast view.

In summary, the SV152 Upgraded Reticle Eyepiece is an invaluable tool for accurately centering guide stars and astrophotography targets. Its wide field of view, comfortable eye relief, and illuminated, adjustable reticle make it an excellent choice for both astrophotography and general astronomical observation.

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