I have had some very clear viewing with these Binoculars, they pick out more than I expected, made a stary night magical. Jupiter shows as a disc with some moons as dots., All that you expect with 10 x 50.
The locking focus was a plus.

The only downside is that the eye protector pieces that are too big and fall off.

Having read numerous reviews on ‘good’ binoculars for astronomy, I chose these Pentax 10 x 50’s as a good blend of optics, handling and build quality, but most of all for the good eye relief. Having used them to view the Pleiades and the recent partial eclipse of the moon I’ve not been disappointed. The loose objective lens dust caps and eyepiece covers were a known issue but have been easily rectified with appropriate third party covers. Nevertheless, I believe they still represent good value for money, especially when backed up by First Light Optics excellent service.

I really liked these binos , easy to hold , gave very good images with almost no chromatic aberrations . Coma was not very obtrusive and didn't start to be noticeable until about 15% from the field edge during night views . Day views you really had to look carefully to find coma . Great for Astronomy and birding .

Excellent binoculars in my opinion because the quality is very good, and the price is very reasonable. If you pay more yes, you can probably get better optics! But these bins are fairly light but very powerful so excellent for stargazing which is my purpose for them. Also, if you wear glasses, as I do, these binoculars will help you enormously.

I bought these for my wife, and we're both very pleased with them. They are a little heavier than my own Olympus 10x50s, but feel nicely built., and they give a very clear and crisp image. My only slight criticism of the binoculars themselves would be the somewhat stiff focusing, but this would be very picky. More annoying is the very loose dust caps, and I would have expected a carrying strap on the case.
The major thing that makes these a total winner for us is the inter-ocular distance. My wife's eyes are a little closer together than mine, and she cannot get along with my bins. Also, the very good eye relief makes them a pleasure to use.

After having the Pentax 8x40 version of the these for astro and birding I decided to give the 12x50 shot. Naturally they're a little more heavy to hold and steady the image but they are a pleasure to use all the same and give that little bit more reach you just can't get with the 8's. I easily picked out the moons of Jupiter the other night and whilst resting on a post had very nice views of Mars and the Moon. really happy with the purchase and FLO delivered practically next day. Excellent service, excellent Binoculars!

Excellent service from First Light Optics. Have ordered from them before, and our second purchase was once again a first class experience. Website easy to use, and delivery was prompt.

Already have the 20x60 which are great for zooming in on specific areas with the small fov which I find ok but also just purchased the 12x 50 which i always carry in rucksack when out n about and really love these for the bright sharp views I get and I can hand hold them no problem I find ,the bins feel very robust and nice in the hand and I especially love the large eye relief as I have astigmatism and combined with the smaller exit pupils the sp series I think are just brilliant

These Pentax binoculars have excellent eye relief for glass wearers and those without. They feel very solid in the hand and are simple to adjust. The only negative point is that the lens caps cannot be attached to the binoculars or strap so could easily be lost if not placed somewhere securely.

Excellent customer service and fast delivery from First Light Optics.

Parfait, le jumelle sont de tres bonne qualité et l'envoi tres rapide, merci a First Light Optics.
Perfect, the binoculars are of very good quality and sending very fast, thanks to First Light Optics.