WILLIAM OPTICS REDCAT 51-III WIFD f/4.9 REFRACTOR BF25 the SCT’s secondary mirror can

the SCT’s secondary mirror can be removed and replaced with a field-flattening lens assembly (sold separately by third party manufacturers) so that a camera can be used in the front of the telescope at the f/2 focus of the instrument’s primary mirror

On the telescope side you can find an M48 female thread with 2" barrel while on the camera side is an M54 male thread

5 5mm T2 extension + T2 spacer 1mm + T2  spacer 0

We will have to point to various locations in the sky

tracking or pointing objects

WILLIAM OPTICS REDCAT 51-III WIFD f/4.9 REFRACTOR BF25 the SCT’s secondary mirror canThe William Optics RedCat 51 III WIFD brings the new internal focusing mechanism to one of the most popular telescopes ever. This makes it simple to install autofocusers such as the ZWO EAF without the need for clumsy belt driven add ons. The RedCat 51 III features the same excellent Petzval optics as its predecessor, but the addition of the WIFD focusing mechanism makes the whole package more stable, precise and far easier to use. Unlike the previous