Ostara 6.5mm eyepiece review. OS330618


As the Ostara Plossl 6.5mm eyepiece is classed as a low-mid priced eyepiece, it seemed only fair to test on a Celestron Astromaster 70mm refractor. This gave a magnification of 138x. For a standard 70mm telescope this would be a good test for both telescope and eyepiece.

The Ostara PL 6,5mm was one of the later additions to the HR range. Fully coated optics and a sturdy metal body

Turning to Jupiter, I got very clear views of the 2 main cloud belts. But with a little patience some extra dark areas briefly appeared in the belts. The 4 main Moons were very clear points of light and fitted well in the field of view. The 6.5mm plossl does not come with a rubber eye cup , but without glasses I found this not an issue, and made for a very comfortable viewing experience. I would say the eyepiece is not for spectacle wearers.

But then by far the most rewarding and surprising view was when I turned to the lovely double star Algieba in Leo. I thought this pair of 2.4 and 3.6 magnitude stars with a small separation of 4.6 arc seconds would be a challenge. But was greeted by a beautiful sight with a  clear gap between the two, with a sharp diffraction ring around each star making a stunning sight to see. One more nice surprise was the lack of chromatic aberration.

Summing up this is a great eyepiece for small – medium priced scopes. It may not have the high contrast of the fully multi-coated eyepieces, but is a great way to enjoy high magnification without breaking the bank

The Ostara PL 6.5mm eyepiece can be bought HERE from Northern Optics in Lincolnshire UK

This entry was posted in Hawke Binocular Reviews and tagged , . Bookmark the permalink.

Comments are closed.