I posted about this monocular on a recent thread about monocular but I felt it is worth having its own thread. A few months back I purchased the new Orion 8x25ED monocular and the Orion 10x42 monocular. I won’t say much about the 10x42. It is ok and I have a use for it. But it falls off quite a bit in the outer field and does not have any of the advantages of the 8x25ED monocular.
So I’ve never had a monocular before but I wanted to try one because binoculars are too much bulk for my walks and my right eye has enough astigmatism that I never feel like I am getting a sharp view when I use my 8x42 Nikon binoculars at night.
So the Orion 8x25ED monocular is a really nice optic. It is sharp to the edge. It is clean and clear across the field. It reminds me very much of looking in one of my APOs with a DeLite in the star diagonal.
A few nice features:
1. The soft rubber caps are both very secure and easy to remove. The caps are both exactly the same size so when you remove them it does not matter which end you put them back on. That has been very convenient when I am out for a walk. No fumbling around I get done with what I was looking at and can put the caps on while walking.
2. It is a nice slender and light size. It is completely unobtrusive to have in the pocket of my jeans or shorts when out for a walk. Compared to the bulky 10x42 it is a big difference. It is basically the same size as a small flashlight.
3. Eye relief is perfect for glasses. I can take in the entire field with my glasses on with no contact between the monocular and my glasses. Now if you do not wear glasses it has a nice, smooth twist eyecup that will not fall back in unless you choose to twist it.
4. Focus on this thing is very smooth. There is a fine rubber grip ring for helping with focus. The internal mechanism is smooth. I liked the first one so much I bought a second. The second is actually looser on the internal movement than the first. That makes it a little trickier to tune focus because it is easier to slip past the tightest focus. But it is not a problem. I’m just noting there will be some variation.
5. If you want it does come with a case and wrist strap. I don’t use either when out on my walks. I have it in my pocket.
The optical performance of this zoom is outstanding both in daytime and night. I am a picky about the aesthetics of he view. The 10x42 is fine for daytime. There are certain situations where I would use it. But the 10x42 is too poor to use at night IMO. Now the 8x25ED is exceptional for both. The biggest thing to me is it presents that same high quality view as looking through an APO with a sharp from center to edge eyepiece such as a TV DeLite.
So in daytime the 8x25 monocular is clean and clear across the field. I have noticed that it has a nice depth of field. I can scan distant hills and the foreground trees, bushes, horses etc are also focused.
At night has been a real shocker. Once you get sharpest focus of stars dialed in at night the views are pretty stunning. Last night in between swapping around which scope was on my mount I pulled out the monocular and scanned around for about 20 minutes taking in a bunch of targets. Large open clusters such as the Alpha Perseus group, double cluster, NGC 7789, NGC 6633, IC4756, M6, M7 are quite incredible. The M24 starcloud is impressive. Then the emission nebula in Sagittarius are amazing.
One change in the design that would be doable would be for Orion to put filter threads on the front of the monocular. The tube is the perfect diameter and I think if you could thread a UHC filter on the front with that almost 7 deg field you could have a lot of fun studying large emission nebula. This monocular is so sharp that would be quite enjoyable.
I can’t emphasize enough that looking through this monocular at that night sky is like looking through a quality telescope.
Anyway, I’ve never had a monocular before but I’m loving this one. It would be kind of neat if they cam out with a 10x32 version of this.