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aurora
An aurora (plural: auroras or aurorae), sometimes referred to as polar lights (aurora polaris), northern lights (aurora borealis), or southern lights (aurora australis), is a natural light display in the Earth's sky, predominantly seen in high-latitude regions (around the Arctic and Antarctic).
Auroras are the result of disturbances in the magnetosphere caused by solar wind. These disturbances are sometimes strong enough to alter the trajectories of charged particles in both solar wind and magnetospheric plasma. These particles, mainly electrons and protons, precipitate into the upper atmosphere (thermosphere/exosphere).
The resulting ionization and excitation of atmospheric constituents emit light of varying color and complexity. The form of the aurora, occurring within bands around both polar regions, is also dependent on the amount of acceleration imparted to the precipitating particles. Precipitating protons generally produce optical emissions as incident hydrogen atoms after gaining electrons from the atmosphere. Proton auroras are usually observed at lower latitudes.
For sale is a Primary Arms 5x ACSS Prism with the Aurora reticle and green/red illumination. Very clear glass, bomb proof, comes with top mounted picatinny rail, and all original packaging. Throwing in a kill flash front cover.
Asking $225 Shipped
Call/Text Ryan Five-Oh-Three-403-8347
Posting for a buddy. He’s had it for a couple years and doesn’t really use it. In excellent shape and works well. Comes with 1913 mount, spare batteries, ir illuminator, and a nice hard case. Asking $800 no trades. Meet in the Portland/Vancouver area or can ship on buyers dime. Thanks!
sold
Portland/Vancouver
$450-
Up for sale is a Sionyx Aurora night vision device. This is the gold standard for budget night vision. First intended as a low light video camera, this unit has been used as a low light head mounted nvg device. This is a fun and easy way to dip your toe in the night...
For sale is a brand new never shot Primary Arms Gen IV 1-6x24 scope. Has a built in throw lever and the reticle is calibrated for 5.56 and 308. Including a Primary Arms Deluxe Mount.
Asking $245 shipped.
Call/Text Ryan Five-Oh-Three-403-8347
I thought I'd already posted an intro thread but apparently I haven't My apologies. New/Not New member in Aurora Oregon. 15 year (and counting) Army Veteran, love the forums and have had nothing but great experiences. Glad to be a part of it all.
Dual Sionyx Aurora Sport color night vision cameras.
Includes 2 cameras, bridge, wilcox wedge, 2 charging cables and an anker dual feed remote battery pack. (not pictured because I forgot to take a pic, but you know it's just a battery pack.) I put this together for fun, back when the big...
For sale is a brand new Primary Arms Silver Line 1-6x Second Focal Plane Scope with the new ACSS Aurora Reticle. The same reticle they are using on the new ACOGS. Has built in ranging for height and width, drops, and holds. Very clear glass, illuminated, waterproof, shockproof. Comes with all...