Most helpful positive review
4 of 4 people found the following review helpful
Good eyepiece for the money
on 12 March 2013
I have a 4mm Orbinar eyepiece. I like the 4mm version much better than the 4mm Astro eyepiece that came with my budget Celestron Firstscope. So, I decided to buy the 6.5mm version too. I have to say, I like the 6.5mm eyepiece better with the Firstscope. The image is brighter than the Orbinar 4mm eyepiece, eye relief and the field of view are better too. I think the Orion Nebula looks better with the 6.5mm eyepiece than with the 4mm version. I could see Jupiter and it's moons with both eyepieces, but Jupiter looked better through the 4mm eyepiece. Both eyepieces had a slight halo around Jupiter, but the halo wasn't as noticable with the 6.5mm eyepiece. I would give it 5 stars if it wasn't for the slight halo around Jupiter. I don't see the halo looking at the moon or stars though. By the way, the Celestron Firstscope has a 76mm mirror with a 300mm focal length. This eyepiece gives me about 46x magnification, compared to 75x with the 4mm eyepiece. I really wanted to get a 5mm eyepiece, but the price was too high. I got both the 4mm and 6.5mm Orbinar eyepieces for half what a 5mm eyepiece would have cost. I didn't want to spend big bucks on eyepieces for my low budget Firstscope and these did the trick!
Update to my review: I mentioned the 'halo' around Jupiter. I don't think this was caused by the eyepiece. I think it was due to the weather conditions and air pollution in my area. I looked at Saturn tonight and it looked just fine. I could see it clearly with both the 6.5 and 4mm eyepieces. It wasn't very big with the 6.5mm eyepiece at 46x. It was a bit bigger at 75x with the 4mm eyepiece. With both eyepieces, the ring looked like one big ring. I couldn't see any lines in the ring, but I could see a slight gap between the ring and the planet. I'm changing my review to 5 stars instead of 4, since this eyepiece can make my cheepo Firstscope look pretty darn good.