|
Optics, Mounts, Rails and Sights If it aims your firearm, post about it here. |
|
Thread Tools | Display Modes |
#1
|
||||
|
||||
I've got astigmatism. Why does looking through my RDS thru BUIS help with the starbu
I noticed that if I have the rear MBUIS for lower 1/3 cowitness flipped up, the red dot through the aperture looks crystal clear while outside of the aperture it looks starry.
What is the scientific explanation for that? Just curious. Thanks in advance for your answer! Sent from my SM-G970U using Tapatalk
__________________
Quote:
Last edited by PogoJack; 02-15-2020 at 2:14 AM.. |
#5
|
||||
|
||||
My High School English teacher used pinhole glasses.
She said it was to exercise her eye muscles. Tried them on but had eagle vision back then so no help. Maybe will revisit the idea and start a new look. |
#12
|
||||
|
||||
The same thing happens when you put a magnifier behind your red dot.
__________________
Quote:
|
#14
|
||||
|
||||
If you're far sighted make a tight circle with your pointer finger and look through the center you'll be able to read without glasses. You look stupid at the store trying to read labels etc. You can also use your cell phone to take a pic of what you need to read.
__________________
Can DI AR's run dirty? Palmetto State Armory Suppliers revealed "If it ain't stock, it don't belong on your Glock" |
#15
|
|||
|
|||
Mostly guesswork: apertures reduce the amount of light coming through, in a tighter 'pencil' of light. Less light against a smaller cross section of cornea, then less light is coming in through the astigmatic part to throw off the laser and give that 'starburst' pattern.
|
#16
|
|||
|
|||
I still remember well being at a CMP shoot thinking my Aimpoint was broken. Looked up trouble shooting online and stumbled upon the curse of the astigmatism...was i denial till I had my kid look through the optic.
Wonder if we could figure out some kind of filter? Would a polarizing filter work? |
#19
|
||||
|
||||
Interesting OP I was looking to go award from my red dot due to the starburst effect but now gonna have to try running a rear sight behind it.
__________________
5.1.11 "Tonight we are a country awakened to danger and called to defend freedom. Our grief has turned to anger, and anger to resolution. Whether we bring our enemies to justice, or bring justice to our enemies, justice will be done. We will not tire, we will not falter, and we will not fail." George W. Bush 43rd President (2001-2009) |
Thread Tools | |
Display Modes | |
|
|