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Weldon
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« on: December 28, 2009, 11:45:01 PM » |
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Parallax problems result from the image from the objective not being coincident with the reticle. If the image is not coplanar with the reticle (that is the image of the objective is either in front of or behind the reticle), then putting your eye at different points behind the ocular causes the reticle crosshairs to appear to be at different points on the target. This optical effect causes parallax induced aiming errors that can make a telescopic sight user miss a small target at a distance for which the telescopic sight was not parallax adjusted.
To eliminate parallax induced aiming errors, telescopic sights can be equipped with a parallax compensation mechanism which basically consists of a movable optical element that enables the optical system to project the picture of objects at varying distances and the reticle crosshairs pictures together in exactly the same optical plane. There are two main methods to achieve this.
By making the objective lens of the telescopic sight adjustable so the telescopic sight can compensate parallax errors. These models are often called AO or A/O models, for adjustable objective.
By making an internal lens in the internal optical groups mounted somewhere in front of the reticle plane adjustable so the telescopic sight can compensate parallax errors. This method is technically more complicated to build, but generally more liked by parallax adjustable telescopic sight users—unlike AO models, which are read from the top, the sidewheel's setting can be read with minimal movement of the head. These models are often called side focus or sidewheel models.
Most telescopic sights lack parallax compensation because they can perform very acceptably without this refinement. Telescopic sights manufacturers adjust these scopes at a distance that best suits their intended usage. Typical standard factory parallax adjustment distances for hunting telescopic sights are 100 yd or 100 m to make them suited for hunting shots that rarely exceed 300 yd/m. Some target and military style telescopic sights without parallax compensation may be adjusted to be parallax free at ranges up to 300 yd/m to make them better suited for aiming at longer ranges. Scopes for rimfires, shotguns, and muzzleloaders will have shorter parallax settings, commonly 50 yd/m for rimfire scopes and 100 yd/m for shotguns and muzzleloaders. Scopes for airguns are very often found with adjustable parallax, usually in the form of an adjustable objective, or AO. These may adjust down as far as 3 yards (2.74 m).
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Reminton 581 Bushnell .22 rimfire 3-9x32 Ruger 10/22 Leupold Rifleman 3-9x40 Sig 522 Red dot Reminton 597 .22Mag Simmons 4-12x40 www.varminthuntersnorthwest.com |
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Striker
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« Reply #1 on: December 30, 2009, 05:57:00 PM » |
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This was obviously a cut and paste job!!!!!! I don't think weldon can type that many words all at one time!!!!!!!! Let alone BE THAT smart, after all he's a carpenter!!!!! LOLOLOLOLOL
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A Veteran- Whether active duty, Retired, National Guard or Reserve- is someone who at one point in his/her life, wrote a Blank check made payable to "the USA", for the amount of "up to and including his/her life". That is honor and there are too many people who no longer understand it!!
USN RET
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marlin vs
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« Reply #2 on: December 30, 2009, 07:48:36 PM » |
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This was obviously a cut and paste job!!!!!! I don't think weldon can type that many words all at one time!!!!!!!! Let alone BE THAT smart, after all he's a carpenter!!!!! LOLOLOLOLOL
Dave it didn't take you long to get back into the swing of thing's, and Weldon really loves you.  |
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Marlin .17 vs.Tasco 6x24x50 AOE. Sak moderator Born to hunt,forced to work. urbs intacta manet waterfordia.  |
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Key
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« Reply #3 on: December 31, 2009, 06:17:54 AM » |
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"A man breaks into your house and you don't have a gun........HOW are you gonna shoot him" Dale Gribble
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Weldon
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« Reply #4 on: December 31, 2009, 08:19:23 PM » |
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This was obviously a cut and paste job!!!!!! I don't think weldon can type that many words all at one time!!!!!!!! Let alone BE THAT smart, after all he's a carpenter!!!!! LOLOLOLOLOL
Dave it didn't take you long to get back into the swing of thing's, and Weldon really loves you. Words hurt, Striker!!!  Boo Hoo!!! Boo hoo hoo!! But that's o.k.!! Bob's right!!  |
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Reminton 581 Bushnell .22 rimfire 3-9x32 Ruger 10/22 Leupold Rifleman 3-9x40 Sig 522 Red dot Reminton 597 .22Mag Simmons 4-12x40 www.varminthuntersnorthwest.com |
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hagfan72
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« Reply #5 on: February 28, 2010, 09:15:56 PM » |
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OOHHHH, I thought A/O was what Belafonte was saying in his song about counting bananas. A/O. AAAAA/O. Daylight comes and me want to go home.  |
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digitalsteve
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« Reply #6 on: March 01, 2010, 04:37:27 PM » |
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OOHHHH, I thought A/O was what Belafonte was saying in his song about counting bananas. A/O. AAAAA/O. Daylight comes and me want to go home. LOL! |
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.17HMR - Ruger 77/17-VMBBZ, Tasco 2.5-10x42 AO Mil-Dot
.22LR - Henry H001, Skinner Peep Sight
.357, H&R Synthetic Handi-Rifle - SB1-S35, Nikko Stirling 4x40
.22LR, Beretta 87 Target
9mm, H&K USP, Variant 1, Trijicon Night Sights
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epitome
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« Reply #7 on: March 02, 2010, 04:25:19 AM » |
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OOHHHH, I thought A/O was what Belafonte was saying in his song about counting bananas. A/O. AAAAA/O. Daylight comes and me want to go home. LOL! +1 LOL |
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Ruger M77 22 KE-Hornet, 3-9X40 Winchester 37A 12G Stirling ST1700N 17HMR, 3-12x44E Henry 001 22LR, Skinner Peep Sight Anschutz 1451 22LR, 3-9x40AO Hunting is bush walking with a purpose. |
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marlin vs
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« Reply #8 on: March 02, 2010, 04:51:53 AM » |
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+2 |
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Marlin .17 vs.Tasco 6x24x50 AOE. Sak moderator Born to hunt,forced to work. urbs intacta manet waterfordia. |
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WaltherP99
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« Reply #9 on: April 04, 2010, 10:31:27 AM » |
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OOHHHH, I thought A/O was what Belafonte was saying in his song about counting bananas. A/O. AAAAA/O. Daylight comes and me want to go home. little late on the draw here, but, ROFLMMFAO!!!!! |
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Savage 12FV .223 Project COMPLETE !!!!!
.204 Ruger...'NUFF SAID!!!!!
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