Celestron 93435 31 mm Luminos Eyepiece, Silver/Black

Really a fantastic eyepiece. Going from the stock, 1.25" EPs to this was very cool. This thing is as big as -- and solid as -- a grenade! Make sure you balance your OTA with it on before you use it. Best with a quality diagonal, of course. (I use a Celestron, Dielectric Star 2" on a C9.25 SCT.) Very minor, but still a bit disappointed that Celestron still prints on the box that the 19mm is a "1.25" Eyepiece." (Come on guys! It is definitely a 2" EP.) Ugh. Oh well, definitely worth it! Clear skies!

My go to eyepiece.

The 19mm came in a box listing the dimension of 1.25".I opened and checked, and it was a 2" eyepiece inside.

Just got my new 8'' SCT Celestron in and put this eyepiece in to look at the moon and wow very nice. I had no trouble seeing the craters.

I recently added a 2" Dielectric star diagonal to my C8, after seeing a gorgeous view through a neighbor's scope. When I looked in his 2" eyepiece, it was like looking through a spaceship window instead of the pinhole view I was used to with my 1.25" EP. Your eyes will thank you for it. I chose the Celestron line of 2" eyepieces due to their affordability, good reviews, and my overall comfort with the brand as a novice astronomer. I couldn't be happier. The 23mm EP, in conjunction with the new diagonal, provided a wonderful view the Orion Nebula on my first viewing. Although Jupiter was bright and sharp, as well, I found that my Celestron 8-24mm 1.25" EP offered a similarly good image. The retractable eyepiece is a nice touch, although I find it harder to get a full view with it fully raise. In most dark environments, I probably will not use it. The build quality of the eyepiece is impressive. It's stunning to look at in person. What surprised me most was its size and weight, Sure, the specs listed the weight before purchase, but I didn't realize what it would feel or look like in my hand. Overall, I feel like I made a great choice for my first 2" eyepiece, and I have already begun adding more.

31mm is bright, just like the name says. Planets are also bright. The wide angle allows you to observe objects longer, if you don't have a tracking computer.The 31mm, In my opinion, allows you to find an area if interest, before switching lenses. Use the luminos 2.5 barlow, and you're using a 12.5 lens with 27mm eye relief.As with all science and observation, questions should start forming in your mind. Why are some craters very bright? How high are those crater ridges? What are the bright lines extending from the crater?Keep in mind my picture is from a newtonian telescope, and is not how it appears in the night sky.I highly recommend the 31mm and 2.5 barlow luminos lenses

I have an 1.25" telescope with a 1.25" star diagonal and a 1.25" to 2" adapter. It appeared that the FOV was somewhat reduced with this setup. I recently purchased a 2" star diagonal but have not yet used it. I am hoping to regain some of the lost FOV with this setup. Overall, I am very impressed/satisfied with this eyepiece, even if my reconfiguration does not pan out.

The wide field of view, crisp optics and comfortable viewing (exit pupil) make this eyepiece a please to use. Good value.