I purchased a Rokinon Refractor 900mm x 90mm and even the included eyepieces (1.25" Super 25 and 10) are not much better than my binoculars. this is my 1st telescope so I'm a bit of a rookie. What can i do to boost the magnifying power? I cannot seem to find a manufacturer website. Is there an option to buy better lenses or eyepieces to help?

Your Rokinon 90mm F10 refractor looks identical to the Tasco 45090286, the Orion Astroview 90 and the Sky-watcher 90 refractors. They are made by Synta Optical in China. Look for for instruction manual of the Orion Astroview 90 for reference. I don't know if yours came with and equatorial mount or an Alt-Az. That could be a major difference in viewing pleasure. With the Eq mount and with the help of a clock drive motor you can use higher power eyepieces and still keep looking for long period of time the same space object. With the Alt -Az you'll need to keep adjusting the telescope orientation to compensate for Earth rotation.

For improved viewing power I recommend to throw away the eyepieces that came with it and replace them with quality ones from Meade, Celestron, Orion, etc. I use Meade Super Ploss with my Tasco 45090286 (they came with my ETX-125) and the difference in viewing quality is astronomical!

They came with a decent fully coated achromat doublet optical lens. An sturdy Eq mount same as Orion EQ-2m and Celestron CG-3 (if yours came with an Eq mount of course) and a aluminum tripod.

Give it a try. Take it to your local stargazing party and try it with some quality eyepieces from fellow astronomers there. This way you'll see the big difference without spending a dime.

There no perfect telescope. Just excellent telescopes for specific types of viewing! Your Rokinon 90mm F10 refractor looks identical to the Tasco 45090286, the Orion Astroview 90 and the Sky-watcher 90 refractors. They are made by Synta Optical in China. Look for for instruction manual of the Orion Astroview 90 for reference. I don't know if yours came with and equatorial mount or an Alt-Az. That could be a major difference in viewing pleasure. With the Eq mount and with the help of a clock drive motor you can use higher power eyepieces and still keep looking for long period of time the same space object. With the Alt -Az you'll need to keep adjusting the telescope orientation to compensate for Earth rotation. For improved viewing power I recommend to throw away the eyepieces that came with it and replace them with quality ones from Meade, Celestron, Orion, etc. I use Meade Super Ploss with my Tasco 45090286 (they came with my ETX-125) and the difference in viewing quality is astronomical! They came with a decent fully coated achromat doublet optical lens. An sturdy Eq mount same as Orion EQ-2m and Celestron CG-3 (if yours came with an Eq mount of course) and a aluminum tripod. Give it a try. Take it to your local stargazing party and try it with some quality eyepieces from fellow astronomers there. This way you'll see the big difference without spending a dime. There no perfect telescope. Just excellent telescopes for specific types of viewing!