Question about Nikon 6430 Buckmasters 3-9 X 50Mm Matte Nikoplex Riflescope

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Scope goes out of focus at 7 to 9 power - Nikon 6430 Buckmasters 3-9 X 50Mm Matte Nikoplex Riflescope

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This may indicate that you have exceed the scopes ability to focus in the near distance. You don't mention the distance you are trying to shoot, but most scopes are optimized for 100 yards. At shorter distances you may be encountering parallax problems.

If these do not seem to fit your situation, I would recommend you call Nikon and get a return authorization so they can check it out for you.

Posted on Oct 14, 2010

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Posted on Jan 02, 2017

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I have a Simmons Model ATV 4515 rifle scope. other


Your scope has 5 adjustments:
1. Eye piece focus - used to focus on the reticle.
2. windage adjustment - should be on the R side of the scope, adjusts lateral impact point.
3. Vertical adjustment - the top turret. Adjusts vertical point of impact.
4. Power ring - adjusts the magnification of the scope.
5. AO ring - Parralax adjustment - used to focus the scope at specific distances. Most markings are not exact, you should set it at the range you are shooting and fine tune focus when you look through the scope.

Sep 06, 2013 | Optics

1 Answer

Science tech 262 manual


Can't find a manual. This is a 76mm reflector on a Alt/AZ mount.
1. During the day, put in the 20mm eyepiece and point to a object around 100 yards away.
2. Focus on the object
3. Align the finder to the object in the eyepiece
4, Set up at night, give the scope time to reach outside temperature
5. Point scope with finder at the moon. (More than half full will be too bright)
6 Use the lowest power eyepiece (highest number) and focus on the moon.
7. You may now use higher power eyepieces to observe.
8. Pointing the scope usually involves loosing 2 knobs to move the scope in up/down and side to side motion. There may be slow motion controls to adjust the scope as objects in the sky move.

Nov 27, 2011 | Optics

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I have a Jason 400x telescope 306 s that won't focus


You are using too much magnification. I am sorry but that scope will NEVER reach 400 power. This is a complete LIE--- meant to sell the scope. Even in my LX90 8 inch scope we rarely go above 200 power.and then ONLY on perfect nights wityh perfect sky conditions.

The maximum magnification of any telescope is no more than 50 times the aperture of the scope. For example a 3 inch scope is no more than 150 power.

Put the eyepiece with the largest number written on it into the focuser. Do not use the 2x barlow if you have one. Practice focusing with JUST the eyepiece on a distant object during the day time.



www.telescopeman.org
www.telescopeman.us
www.telescopeman.info

Aug 17, 2011 | Optics

1 Answer

See nothing through my brand new telescope


I suggest that you try the telescope first in daylight (NOT pointed at or near the Sun), using the least powerful eyepiece (the one with the largest number). Try it on objects on the horizon, remembering that they will appear upside down. This is a good time to get the accessory viewfinder scope lined up with the main scope, too. It is unlikely that the finder scope will be much use in pointing the telescope until you adjust it to precisely line up with the main scope.

When you have become familiar with the low power eyepiece, try a higher power, which will focus at a different point (and be harder to find objects with). Then try it out at night, on a bright, easily found object like the moon.

The higher the power of eyepiece on a telescope, the dimmer the image, the more difficult to aim it at any chosen object, and the more difficult to focus. Do not use the Barlow lens if one came with the scope. There is a very wide range of movement in the focus mechanism, because different eyepieces focus at different points, but the actual focus range for any eyepiece will be a small part of the overall range afforded by the focusing mount. You will also find the the object you are looking at swims out of the viewing field, and you must continually move the scope to follow it. This will be more pronounced at higher magnifications.

Jan 02, 2011 | Bushnell 3" Reflector Telescope w/Talking...

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I dontknow how to look through it andfocus on a star,or moon


Hi Joe, I'm Mark.
The small scope on top of your big scope is called the "finder" scope. Probably 2X or 4X. It should have cross hairs in the view. Find the moon with it. It will also require focusing but since the moon is bright, you can get an idea where it is in the lens by that.
Next. Find the LOWEST power eyepiece to insert into the lens holder. And rotate the focus knob.
Hopefully, you will see some bright blurry thing and then you can focus on it.
After you get it in focus, put on a more powerful lens and look at the craters on the moon.
Note: You will need to adjust your telescope to the earth's rotation. Your scope should have
instructions for accomplishing this.
Hope this helps,
Best, Mark

Dec 28, 2010 | Tasco 200x50mm Refractor Telescope

1 Answer

Very blury above 10 x no mater how i ajust it and hard to veiw target nikon 8426 6- 24x50 bdc brand new


If you are trying to focus at a relatively close distance, you may be overpowering the scopes ability to focus at that distance. Most rifle scopes are set to parralax free at 100 yards.You can see this effect by putting the scope on its lowest power, focusing at 25-50 yards, and then increasing the power setting. You will see the image go out of focus as the power increases. This simply means that you must shoot at longer distances in order to use the scope to its full potential.

The other problem may be your parallax adjustment, but you may have already tried that solution.If not, make sure that the adjustment dial is set at the distance you are trying to shoot (minor adjustment from the indicated setting may be required to fine tune the image).

Oct 22, 2010 | Nikon 8426 6-24x50 Monarch Side Focus...

1 Answer

Can not focus telescope lens pieces do not fit


What Tasco do you own is it a refractor or reflector? Does it have a lens in front -- then it's a refractor; or mirrors, then it's a reflector.

On a refractor the eyepieces go in the back of the tube, sometimes you also have a diagonal which goes into the scope first and then the eyepiece goes into the diagonal. The diagonal is simply an L shaped device with a mirror inside that makes it easier to look through the scope when it is pointed UP at an angle.

On a reflector the focuser is on the FRONT side of the tube, and the eyepiece goes into the focuser.

Take the scope outside during the day time and practice focusing on a distant object. Put the eyepiece with the largest number written on it into the focuser or into the diagonal. This is your LOWEST magnification.

Practice focusing --- until you get used to how it is done. Turn the focuser knob to the left slowly-- if nothing comes to focus then try turning it to the right. It may take several full turns to come to focus.

At night the moon should be your first target.

Read my TIPS on my profile page.

ABOUT NOT FITTING: eyepieces come in 3 sizes, .975, 1.25, and 2 inch sizes. Measure the hole and then measure the eyepiece-- it may be that you have the wrong size eyepieces for that scope. The correct size can be purchased on line from many retailers. Here is one telescope retailer that sells eyepieces and other accessories:

http://www.agenaastro.com/

Jul 29, 2010 | Tasco Optics

1 Answer

Swift microscope no 634008 having problem staying in focus when switching magnification


First, a scope of this grade will not be completely in focus as you move from one magnification to the next. But it should be close enough that you do not loose your point of interest.
Be sure you are not pressing down on the stage specimen platform as you change magnifications. It is very sensitive to pressure. Also, be sure that the coarse focus tension is tight enough that the platform is not drifting down imperceptibly as switch magnifications. Look through the scope and watch if the image goes out of focus while you are watching it. If so, you have what is called "stage drift". This is corrected by tightening the tension on the coarse focus knob.
The tension adjustment is on the coase focus shaft. It looks like a chrome ring with about 3 holes in it. There should have been a strange looking tool that came with your scope. It is used to adjust the tension. If your specimen is "drifting" out of focus, simply tighten the tension ring a little bit at a time until the specimen no longer goes out of focus. Do not get it so tight that it is not easy to operate the coarse focus knob.

May 22, 2010 | Swift M2251C Monocular Microscope

1 Answer

8x32 swat scope


It's not a high end scope. Most times you're better off buying a lower power scope of better quality and you'll still be able to see more clearly than with a higher power yet lower quality scope.

Consider that 6x, and lower power, scopes were pretty much standard for WWII snipers, and that fixed 10x is still an accepted power level for snipers these days.

Nov 04, 2008 | Barska Optics Barska 10-40x50 Ir Swat...

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