If you want to use the new Star Adventurer system with a small scope for astro work, you will need this 1kg counterweight with shaft. This fits straight into the star adventurer body and allow you to properly balance the system for more precise tracking.
Color CCD cameras such as the Skyris color planetary cameras are very sensitive across the visual spectrum, as well as in infrared. Some telescopes may correct for chromatic aberration, but are not designed to correct for IR light, which can often look defocused in astroimages. Blocking infrared (IR) light provides the greatest color balance and sharpness in your astroimages. This filter blocks IR while passing more than 94% of the entire visual spectrum, maintaining color fidelity.
This is a high-quality Antares 1.25 25mm Plossl eyepiece with focusable crosshairs (single), perfect for alignment and tracking. To obtain razor-sharp focusing of the crosshairs, merely turn the upper part of the eyepiece.
Brand new saddle bar by William Optics. This handy bar will attach on top of your William Optics rings with 120mm distance, then allow you to either use it as a handle, or a quick release guidescope system. The rings are available separately.