Preface
A very common topic we cover here is the rapidly progressing sport optics market. With enumerable new product lines and releases, its hard to keep up. One of the names that continues to pop up in this sphere is Maven Optics. I’ve had the opportunity to use at least one of their products in the past, one of their RS rifles scopes. Today we are looking at one of their CS Spotting scopes, the Maven CS 1A spotting scope. This compact spotter has a 15 to 45X zoom and a 65mm objective lens.

As an avid looker at things, I was excited to see how this little scope compares to others. The compact size made it ideal to bring along on hikes and deep woods hunting trips.
The Maven CS 1A Spotting Scope
Specifications
| Magnification Range | 15x-45x |
| Obj. lens diameter | 65mm |
| Exit pupil | 4.3mm / 1.4mm |
| Field of View (FOV) | 3.3° / 1.5° |
| Apparent FOV (FOV x Power) | 50° / 70° |
| Field of view (ft/1000 yds) | 174ft /81ft |
| Brightness | 18.5 / 2.0 |
| Twilight factor | 31 / 54 |
| Multi Position Eyecups Y/N | Yes |
| Eye relief | 16mm – 19mm |
| Eye piece construction | 5 group 8 element |
| Near focus | 12ft |
| Dimension WxHxD | 11.4×5.6×3.1 |
| Weight | 40.4 oz |
| Prisms type | Schmidt-Pechan |
| Prism reflective coating type | Fully multi-coated |
| Phase correction coating | Yes |
| Lens coating | Fully multi-coated |
| Pressure tested to what pressure | 1m for 30min. (IPX7) |
| Storage temperature | -40°~158°F |
| Functional temperature | -13°~140°F |
| Frame material | Magnesium / Aluminum |
| Internal gas purged | Nitrogen |
| Objective filter thread | No |
| Focus system | Standard |
| Lens type | ED |
| Origin | China |

Field Use with the Maven CS
My plans for this little scope were to bring it along on some of my scouting trips. It easily fits into a day pack, and is much lighter than my bigger spotting scope. After attaching a tripod foot to the scope, we hiked into the freshly stormed Rocky Mountains.

Maven’ s CS scope comes with rubber scope covers that are friction fit. As well as a cinch-closed soft cover that helps protect it. Using the two covers together is necessary, as the caps wont stay on in your backpack. But when used in conjunction with the soft case everything stays put.

After hiking into a position high into the cloudy canyons, we sat down to do some glassing. I mounted the scope to my tripod and set it up so I could do some looking. One of the first things I noticed about the scope was its convenient controls.
Focus is adjusted using the large barrel around the center of the scope body. It was smooth and easy to get a clear image while maintaining control of the scope. Also in the traditional position, the magnification is adjusted just below the eye piece.

The body of the scope also rotates on its mounting foot. There is a small thumbwheel you can loosen to release the scope, and rotate it for better spotting angles. This is very handy for those long days of spotting, where you can adjust the scope to match your posture for maximum comfort.
Spotting
Using the CS at it’s low setting of 15X made it very easy to get onto a specific target. Zooming in to 45X brought more detail to the image. I did find that like most every other optic I’ve used, higher magnification also reduces brightness. I’ve also noticed that many optics often loose some of their sharpness at max power. Maven’s CS was not immune to this phenomenon.
That said, I still found it very useful for looking at animals from a mile or two away. The strong point of this little scope for sure is its compact size. While it may not have the high magnification of other larger scopes, I feel that the 45X is plenty for field use. If I am sitting next to my truck glassing up a canyon, I might use my other spotting scope options. But if I am hiking up that canyon, I would for sure take the little Maven CS instead.

The optical clarity at 45X is good for a scope at this price point, I find it more than adequate enough for determining deer values within a thousand or two yards. I will also say that I wish there was just a touch better image at max power. But even at 30X it is significantly better than scopes and binocular options. I rarely use optics at their maximum setting when trying to get the best detail. Instead I use them at 80-95% of maximum zoom, they seem to be clearer there.
Pros and Cons
With a soft rubberized exterior, the Maven CS is easy to grab one-handed and endure the rugged use of the backcountry. The controls of the scope are easy and smooth to operate, whether looking through it or not. The small size and weight make it ideal for carrying into places where larger scopes would be a hinderance. And the price when compared to the market is more affordable than some of the big names. I also like the Uniform size of the eye-piece, which makes it very easy to use phone-scope adaptors to take photos and video through your spotter. Something that has become very popular nowadays.

On the downside, the Maven CS is built in China. Which has surprisingly upped their game in the optics production and quality. But to many it remains a negative aspect. And though the Maven CS is manufactured overseas, it does seem like some of their best work. Even if it doesn’t measure up to the Japanese and European produced competition.
My Recommendation
If you are looking for a compact spotter, to take with you into the dark and weathered country of the Rocky Mountains. And if you prefer to not spend thousands on a spotting scope to take with you there. But still want something you can rely on, and positively identify your quarry, this Maven CS spotting scope might be right up your alley.

I have used nicer spotting scope options, and far worse. This scope performs much better than the trash tier optics you find at sporting good stores who’d rather sell basketballs and tennis rackets. And its a step above the entry level scopes you’ll find elsewhere. Its just the kind of scope I’d want to haul through the rough and tumble country where I’d be too afraid to damage one of those expensive green spotting scopes.
I’ve been using the Maven CS spotter for a while now, it has been doing double time looking for summer marmots and big game. I’ll continue using it through hunting season, as it seems well up to the task. Don’t wander off, as I’ll update this article as I continue to build an opinion. If all this sounds like something you too could use, you might do yourself a favor by looking into the Maven Optics CS 1A spotting scope.










