is one of the most popular long focal length / Low-Power eyepieces we
make. The 72mm 2 inch Super-Plossl eyepiece is a superb Low-Power
eyepiece with fantastic edge to edge sharpness and contrast !
72mm Plossl eyepiece was designed because of continual customer request
for a super-low power Plossl for scanning in scopes that were just a
bit to short on focal length for our super popular 85mm. When a scope
has a central obstruction ( like a secondary mirror ) you start to lose
contrast and sharpness below 35x. In a refractor you can go as low as
Here is an classic 4-element Plossl design eyepiece that will absolutely amaze you with excellent sharpness and superb contrast and performance at a fraction of what you would expect to pay.
Power Astro-Scanning is one of the most impressive and enjoyable things
you can do, and viewing from 35x to 55x with a wide-field Plossl it is
like looking at millions of diamonds lying on a bed of black velvet
Russell Optics makes this 2
inch , 72mm Plossl with high quality multi-coated low-dispersion lenses originally
made for the military. Bought as "spare or replacement " lenses used in targeting systems, periscopes, and other optical equipment that was phased out with newer digital technology. They are new/old stock that were sold as surplus to make room for new equipment. 30mm eye relief and is threaded for standard 2
Russell Optics is Now the ONLY manufacturer that we know of that makes the Long focal length eyepieces !!
you ask ?? It is simple really.... The demand from astronomers that
want eyepieces over 40mm in focal length is not as big of a market place
for the "Big-Guys" to invest their time and money.
note.....on Telescopes with a central obstruction ( Like SCT's,
Maksutov's, or Newtonians ) a basic rule of thumb is to keep the
magnification above about 35x. Once you go below 30x you stand a chance
of losing contrast. If your obstruction is larger than 20% of the
primary you could also get a "ghost" image of that secondary mirror.
S&H in the 48 states is $7.88 for US Mail. Outlying areas $8.50.
I ship ONLY within the USA, No foreign bids , PLEASE !!
Paypal payments are preferred , for other
options please contact us through "ME" link next to our name and
feedback at the top of the page. I will gladly clarify any questions,
and help you decide what eyepiece will serve you best .
Thanks for looking,
Filed under: Eyepieces & Accessories