Focuser height increased by 4 inches to move the focuser further from the tube | Starlight

If you have to extend the extension tube or use a separate extension tube to get a sharper image, your setup will become less stable. With this 4-inch focus extender from Starlight Instruments, also known as a riser, you move the focus tube further away from the base of the lens. You place it between the focus base and the lens, which shifts the focus range outward.

Risers come in different sizes and for different focusers, so check beforehand whether it fits your focus lens and base. With a Newton, and therefore with many other telescopes as well. Dobson telescopes, A higher-positioned focus lens has an influence on how well the viewfinder illuminates the field of view.

Set your sights on your current setup and measure how much range you’re missing, because everything you gain from outside goes into your interior. You can find other replacement parts here our telescope parts.

There is also an increase in the size to 3.35 inches. See which one fits your focus lens.