Question about Meopta Riflescopes Meostar R1 Rifle scopes 312x56 Model 706590

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I have a Japan Optics 8x34x56 that doesn't focus at all ranges at all magnifications. Does anyone know where I can get help getting that problem solved please?

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There is a guy on ebay advertising scope repair, I talked to him, he sounds like he knows what he is doing. But as far as your scope goes, I don't think I have ever seen a scope go through the entire range and stay sharp unless it cost $1,000, Mine fuzzes out instantly, I just keep it on the clearest setting and leave it there, How many chances or how many times do you shoot it at game and have time to do anything with the scope. I barely have time to aim. Anyway, you might check him out. He might not be advertising all the time. Hope this helps.

Posted on Aug 04, 2010


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I just purchased a Venture RX-7 reflector telescope at the thrift store. Got home and it's missing the eye piece lenses. Anyone know where I can order these? Any help would be appreciated! Thanks!

With an aperture of 110 mm or so, the absolute largest useful magnification with this scope is about x 220 (certainly not 375 like thay say). However at this limit the image is dim, difficult to focus, and jumps around with any vibration. A more practical limit is about x 150 or so, which is attained with about a 4mm eyepiece.

I'd suggest 3 EPs in the range 5 - 30 mm. Alternatively buy 2 EPS and a x 2 Barlow Lens (This is a magnification multiplier, placed between the scope and EP, to double the magnification of that EP). A 10 mm Plossl EP and a 30-32 mm will give a good spread with the 2 x Barlow.

Even tho the scope is a budget model, a better lens will get the most out of it. . You will soon want a better one.

Mar 31, 2015 | Optics

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My barlow lense is making it hard to focus

Only answer is depends on your optics. Maximum practical magnification is 50x per inch of aperture on very good conditions.
If you have a store brand telescope, the optics are poor (both the scope and the optics) it can't handle the magnification.
High magnification requires a good , clear night.
Allow your scope to reach thermal equilibrium before viewing.

Feb 22, 2013 | Optics

1 Answer

At what magnification is the focus ring distances correct on a Nikko Stirling NSTT52050MD

None of them as it is to low a magnification to get a precise range from
the only way to check is to measure out distances to targets at the ranges on the side wheel and decide

Dec 03, 2012 | Nikko Optics

1 Answer

I have a 4.5 inch reflector 500mm focal length. I know it is basic but a planetary eyepiece should give a reasonable yet small image of saturn. I have bought a 4mm Celestron plossl for this. The eyepiece...

If you pull the eyepiece slightly out of the focuser can you then come to focus? If you can just lock down the eyepiece at that point -- or buy this:

Apr 06, 2011 | Bushnell Optics

1 Answer

I am able to see with the 20m Lens but once i insert the 5mm Lens it looses focus and i cannot see anything, i tried adjusting the focus again with no success. The worst thing that even at day light i...

That's because the 5 mm is too much magnification for your small telescope. Maximum magnification is a function of APERTURE. Which is how big is the front lens or the mirror.

Your scope has about a 2 inch aperture, so the maximum posiible magnification is about 100 power (if it is like the one in the picture above)

50 times aperture (2 inches)-- 100 power

It will only achieve 50 times if the optics are perfect and the sky is very transparent and stable. Usually only 30-40 times is all you normally get.

Nov 21, 2010 | Bushnell Deep Space 78-9512 (120 x 60mm)...

1 Answer

Lens SR6

That's because it is TOO MUCH magnification for that small aperture telescope. This is one of the most common problems for beginners. They believe that you need a lot of magnification to see objects in the night sky. In my 8 inch telescope I rarely go over 120 power -- magnification is the least important property of a telescope. Aperture and good optics are much more important.

Watch the video and audio podcasts on these web sites.

Aug 08, 2008 | C-Star Optics TT-150 Telescope

1 Answer

I cant see clearly in my telescope not matter how much i adjust the focus lines

If it is a focused image but hazy or foggy, you have to clean the optics in your telescope. If you have a focus problem but a clean image, then you are having travel limitations of your focus equipment usually rack and pinion. Wearing eyeglasses can also effect that mechanical problem and so does other added components like "Barlow Lenses" that are used to double or triple eyepiece magnifications. You might also have the lenses in the optical system not in the right order or direction when it was taken apart.

Apr 17, 2008 | Optics

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8x magnification

The RX series of range finders are not of the optic quality that other Leupold optics are. I have used my RX IV in place of my binoculars, but it is not adequate for glassing for game full time. The rangefinding abilities left a lot to be desired for me. As long a the object was under 450 yards, it worked fine. Past that was somewhat difficult to get a range at times. Hope this helps.

Nov 17, 2007 | Leupold RX-III Rangefinder

1 Answer

What is the distance at Macro mode?

In wide-angle macro mode, the minimum focus range is as close as 30cm from CCD (21cm from the lens front.) At this point, the magnification is 0.03x (equivalent to 0.12x in 35mm format).(Focal length is 7.2mm. At maximum magnification 283mm x 213mm of the subject can be captured.) In telephoto macro mode, the minimum focus range is 25cm from CCD (13 cm from the lens front) and the magnification is 0.18x (equivalent to 0.7x in 35mm format). (Focal length is 42.7mm to 50.8mm. At maximum magnification 52mm x 39mm of the subject can be captured.)

Sep 15, 2005 | Konica Minolta DiMAGE A200 Digital Camera

1 Answer

What is the distance at Macro mode?

In wide-angle macro mode, the minimum focus range is as close as 30cm from CCD(21cm from the lens front.) At this point, the magnification is 0.03x (equivalent to 0.12x in 35mm format). (Focal length is7.2mm. At maximum magnification 283mmx213mm of the subject can be captured.) In telephoto macro mode, the minimum focus range is 25cm from CCD(13cm from the lens front )and the magnification is 0.177x (equivalent to 0.7x in 35mm format). (Focal length is42.7mm to 50.8mm. At maximum magnification 50mmx37mm of the subject can be captured.)

Sep 15, 2005 | Konica Minolta DiMAGE A1 Digital Camera

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