Smartphone Telescope Adapter Camera Mount, Universal Phone Mount, Work with Telescope Spotting Scope Microscope Monocular Binocular - Fits iPhone, Samsung, HTC, LG and Smartphone

This is great. No need for an expensive camera for your scope when phone quality is as good as it is now. The product is cheap but its worked for a while and hasn't broke so its quality enough for me.

This inexpensive little adapter did manage to hold my iPhone 8 Plus against the eyepiece of a monocular mounted on a tripod for a few birdwatching photos. It fit the monocular only once I removed one of the "V" braces. It's very finicky to set up, requiring fine adjustments to get to the exact center of the monocular's eyepiece, and the adapter has no provision for fine adjustment, just a wingnut to tighten onc everything's lined up. The location of the iPhone's camera lens also allowed some light to bleed through even once it was adjusted to best view. The spring-loaded clamp to hold the phone is very secure, very strong, but makes repositioning the phone in the clamp a two-handed job.Certainly a good value and an inexpensive accessory, but one that requires patience to set up and use. It did clamp to my tripod easily enough, and produced some reasonably good pictures.

it works but I just didn't trust it. pretty flimsy and low end. but it does do what they say. but for how long.

Top tip: Use the SkySafari Plus app for this. As far as I know it is the only smartphone app that provides a reticle, which makes using this setup MUCH more precise and effective.Tip: A zoom eyepiece that goes down to a relatively low magnification and has a good wide angle view should also work very well with this device, and save you from constantly switching eyepieces.In my opinion this is one of the most exciting recent developments for budget amateur astronomy! This is an absolutely ingenious idea that allows you to use your smartphone with astronomy app as a guide scope. I live in one of the worst light pollution zones on the entire planet and have always had great difficulty navigating to celestial objects manually. It doesn’t help that my neighbors have their house lit up like a prison yard. I just can’t see enough stars to navigate my telescope by. I had actually made a DIY smartphone bracket years ago with the same exact idea that was not as adjustable and did not work as expected. I was absolutely amazed when I saw this product and immediately had to try it!Despite the innovative idea, however, this product is not perfect and it took me a little effort to get it working — but hopefully I can save you some of that trouble for this simple but remarkable device. First and foremost, the fit is very exact and your telescope tube must be PRECISELY between 72mm-74mm (2.8” - 2.9”) for this bracket to fit. Possibly a strap design with a lot more flexibility would have been much better and more widely compatible. However, I was able to fit this onto my slightly oversize telescope by removing a plastic screw cap (see photo) and then using a nylon tie wrap (see photo); the foam padding on the rings is nonslip enough to keep this in place. Second, the ball-and-socket connector for the phone bracket could be sturdier and smoother. However, once I had this all set up and working I was hopping from star to star with incredible ease. It simply blew me away. I could even move my telescope around the yard for better views of specific objects with no need to “recalibrate” this setup as I relocated repeatedly — something other auto guiding systems can’t do. This is an astounding idea for anyone who cannot find enough bright stars for navigating their telescope manually, or just wants to do so as easily as possible.But before listing my instructions below I will tell you right up front that there is definitely a “fudge factor” to using this setup. You will need to use a low power eyepiece for the widest field of view (I used a 38mm wide angle eyepiece). This device (actually, your smartphone app) is not precise enough to put a 5mm eyepiece on target! Even while using this, I could watch the celestial object displayed on the app wandering around the screen a little as the app struggled to maintain an accurate location. A couple times I couldn’t see the target in my eyepiece, but then just a little exploring of the immediate area by panning my telescope around would find it. Also, I found the biggest “off target” effect when switching entirely from one side of the sky to the other (east to west for example). And lastly, the navigation of the app would “wander” sometimes and I had to readjust my “zero” slightly. However, what this setup did for me with very good consistency was put the targeted object within my low power eyepiece field of view, and I could then center it and swap in a higher power eyepiece or a Barlow. I simply could not believe how easily I was spotting stars and planets at will as I swiveled my telescope across the sky.Simple Instructions:Note: This list may seem detailed and cumbersome, but once you’ve actually done this just a couple times you will be able to repeat it very quickly and easily. I hope my experience helps make this easier for you!1. Launch your astronomy app and place your smartphone in the bracket. You might need to do this after Step 2 if the smartphone blocks your telescope’s regular finder scope.2. Using a low power eyepiece (I used 38mm) navigate your telescope to an easy-to-spot celestial object like Jupiter or Vega and center it in the eyepiece. Tighten your tripod panhead snugly in place so the telescope won’t move.3. This is the most important step! Now adjust the smartphone in the bracket until the astronomy object your telescope is focused on is centered in the app (or the app reticle if you are using SkySafari Plus which I recommend — see screenshot). Be very careful not to move the telescope as you adjust the phone position! Also don’t take too long or the rotation of the earth will move the celestial object out of alignment. You might “Search” for your test object in the app before you start this process so that you can quickly align the phone using the app pointer or arrow.4. You are now ready to use your app to search for your next celestial object and use its pointer to physically move your telescope in alignment with the object. This will work best with a low power eyepiece until you have actually spotted the new target object in your eyepiece, then it’s business as usual for swapping in a higher magnification eyepiece or Barlow lens. Unfortunately you will probably need to repeat this process each time you place your smartphone in the bracket, but it’s definitely faster after you’ve done it a few times. Hope this helps!Bottom Line: This device, while it could use some improvements, makes astronomical navigation amazingly easy once you’ve got this set up. Absolutely nothing I’ve purchased in the last five years has made stargazing so easy and convenient.

Does not fit/work on binoculars with soft rubbery eye pieces.

i needed to find the right adaptor and it fit! and i found it! The build quality isn’t amazing but it works for sure!It functions as needed and for the price id consider it a steal great value !!Very easy to use.Optics are pretty average but for the price it’s perfect!

Very flemsy plastic. Not stable at all and won't hold onto larger phones. Also won't open wide enough for a spotting scope.

excellent product