William Optics 61 Guidescope Guide Star Apo Blue

William Optics 61 Guidescope Guide Star Blue: apo guides in blue

The William Optics GuideStar 61 is an apochromatic guidescope featuring a 61 mm (2.4 inch) objective lens with FPL-53 glass. This glass delivers sharp, color-pure star points, and this very sharpness makes guiding more accurate: guiding software can determine the center of gravity of a sharp star more precisely than a blob. Made for guiding refractors with focal lengths from 700 to 1200 mm.

The helical focus works via the dewcap: twist off the ribbed counterring, slide the cap until the star is sharp, then reattach it. At the rear is a extendable extension for extra focusing range. This version is blue, supplied with Vixen-style swastika and a carrying bag.

Also a mini-astrograph

With the readily available Flat61R flattener, the GuideStar 61 becomes a flattened photography lens for small sensors: a complete travel astrograph in addition to its work as a guider.

Included

• GuideStar 61 guidescope
• Vixen-style dovetail
• Transport bag

Featured accessories

Expand with the William Optics Flat61R flattener to also use the GuideStar 61 as a compact astrograph.

For whom yes and for whom no

• ✓ Astrophotographers with a 700 to 1200mm focal length refractor
• ✓ Looking for a guide who can also serve as a travel astrophotographer
• If you're only guiding a short refractor, a UniGuide 32 or 50 is sufficient and lighter.

Specifications

You can find more accessories for this brand at the William Optics brand page.