I have graduated lenses - Would I be best advised to order bifocals? And, how do you incorporate Cyl and Axis measurements?
282297
Hi Todd, I did not see option to order bifocals so I can not comment. Best..
282298
I do not know what 'cyl' and 'axis' measurements are, but, here is what we did:1. when ordering Speedo goggles, we got the +/- number, from our opthomologist.2. when ordering the ProMate snorkeling mask, we selected the the color and then selected the appropriate eye-adjustment (my son is nearsighted) from the "size" pull-down menu on the ProMate scuba options.3. My 13 year-old son loves the mask and was our family underwater photographer in Cozumel.
282299
I have graduated lenses also; however, I just went with single vision lenses in my mask. Don't know about Cyl and Axis ... I didn't bother (even tho I have an astigmatism) and they worked great
282300
I wear trifocals and the single lens correction worked just fine. I wasn't close enough to need the extra correction even when I was about 3 feet away.
692445
Start with lower magnification eyepiece(20mm). During the day practice on focusing on large objects. It's also the way to align the red dot finder. I bought this scope for my grandson . He loves it
14504
I'm not sure. They come in standard "reader" strengths. I suppose you could take them to your optometrist to see if they can replace the standard lenses with your personal prescription.
1436214
A barlow is fine. I use the GSO Barlow that actually gives you two magnification choices...http://agenaastro.com/gso-1-25-2x-achromatic-barlow-lens.html
1274009
The thing to keep in mind about these is that they are compact. So the eye pieces are set wider than the view lenses. Turn them around.
1868994
Perhaps the best guide for A-mount lenses can be found on the Dyxum website: http://www.dyxum.com/LENSES/INDEX.ASP
350251
One more thing, unless you have excellent light collection, I'd be careful. Both of these lenses absorb some light, and at maximum magnification the image may be too dark.
46935
Hi Carole. After stepping off, the number stays for about 5-6 seconds. I have had no trouble reading the numbers even while standing on the scale. They are 1 1/2 " high and I doubt you'll need your bifocals. Enjoy your purchase!
273925
Amazon sells spectacles that function like binoculars. You might be able find a pair that will focus to 3' away but be careful. I ordered a pair of really cheap one and the field of view was too small to be useful. I threw them away. They make much, much better ones that cost much, much more. The issue is can you find a pair that will satisfy your needs at price you can afford.
1713858
The eye piece view is crisp and clear, had problems at first getting them to focus but playing with them I found that if I use my 2x Barlow lens the focus was great, so if you think this might be a problem I would suggest you take this advice when choosing your lenses. I ordered two 12mm lenses to go with the bino viewer and it cut it down to a 6mm because of the 2x Barlow.
49299
You just need to know what your basic prescription u s and order a lens close to that. It worked for me as nd I am very nearsighted.
1713859
Hello, I would say the images for me are the same as I have the basic eyepieces and two sets of as you need two sets for the bino viewers but what I like is the eye relief that you get when looking through them and a almost 3d effect like you get when looking through binoculars. If you can afford it I would highly recomend it, not for just yourself but for other viewers as well. I have a Celestron 8SE and looking at Saturn, Jupiter, the moon, well its pretty awesome. My plan is to do astrophotography, if I was really into eyepieces I would go with the two inch and some nice Nagler eyepieces. Hope this helps, Good luck and dark skies.
1951961
There are three lenses which can be stacked for greater magnification. Using the first lens only it's about 8-8.5 inches. Add the second lens and that drops to about 4 - 4.5 inches. Add the circular lens (for the right eye only) and it drops to about 3/4 - 1 inch. Hope this helps.
606360
A laser collimator. It'll help to make sure your mirrors are aligned. It's pretty easy to do. Look on Youtube for "Collimating your Newtonian" to see how it's done. You'll usually want to check it before each viewing as they can get out of alignment with bumps. If your mirrors are out of alignment, things will get blurry. The Orion Shorty Barlow is a good accessory too if you don't want to buy extra eyepieces. It'll effectively double your eyepieces (turns your 9mm into a 4.5mm and your 25mm into a 12.5mm). Better eyepieces will make it a better scope as well. Superplossls are much better than what's included.
1387443
My advice is to go to Nikon's website where there should be a lens compatible chart or do a Google search.
1469254
I use the 3 and higher for imaging Planets, thet 2X can be used for doubling the power at the eyepiece. The 127 eq is a great scope you should have lots of fun. I had a C5 at one time loved it.
1850538
Hi, you should check lens, there should be some printing indication about your lens size on your lens