ScopeTronix Parfocalising Rings.

These extremely useful rings have always been difficult or impossible to find, now we have
them in stock! Parfocalizing rings are used for several purposes. If you would like to make
your non-parfocal eyepiece set parfocal you can put one of these rings on each eyepiece and
adjust the height so that all eyepieces are at the same focus point, now when you swap
eyepieces you won't need to refocus every time! They are also extremely useful when used
with a flip mirror (like the one built into the ETX) for photography. To use a parfocalizing ring
with a flip mirror you would first use the telescope focus knob to put your attached camera in
perfect focus, now slide a ring over the eyepiece of choice and raise and lower the eyepiece
in
the holder until it is perfectly in focus. Once you find the focus point that is perfectly matched
to the camera slip the ring down and lock it in place using the included wrench. Now you can
focus using the eyepiece (much easier than a dim focus screen) and just flip the mirror and
take a picture! Leave the ring in place on the eyepiece and you can always quickly and easily
pop it back in for photography.
Minimum order 2 rings.

Prices - 2" - £6.99 each

The Astronomy Shop

1 Tone Hill. Wellington

Somerset TA21 0AU

United Kingdom

Telephone: +44 (0)1823 665510