Unconfigured Ad Widget

Collapse

Spotting Scope Recommendation to Reduce Mirage

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • cz74
    Senior Member
    • May 2020
    • 912

    Spotting Scope Recommendation to Reduce Mirage

    Was at Sac Valley several weeks ago the 300 yard range, with afternoon heat the mirage makes it very difficult to spot even 30 caliber holes on splatter targets at 300 yards. Tried my friend's Leupold HD 20-60x60 could not get through the mirage. Any helpful tips appreciated, maybe try with an astronomy scope next?
  • #2
    squeeze
    Senior Member
    • Jul 2011
    • 1322

    Originally posted by cz74
    Was at Sac Valley several weeks ago the 300 yard range, with afternoon heat the mirage makes it very difficult to spot even 30 caliber holes on splatter targets at 300 yards. Tried my friend's Leupold HD 20-60x60 could not get through the mirage. Any helpful tips appreciated, maybe try with an astronomy scope next?
    results will be upside down.
    No matter what scope you use the distortion will be there.
    the image is a result of uneven densities of the heat waves NOT your scope. Shoot earlier.

    Comment

    • #3
      Teachu2
      Senior Member
      • Mar 2012
      • 835



      An example of a remote target camera. Might be the best answer to mirage.

      And another:


      And for 300 yds or less
      Last edited by Teachu2; 06-09-2023, 10:17 PM.

      Comment

      • #4
        G-forceJunkie
        Calguns Addict
        • Jul 2010
        • 6306

        Now you know why astronomy telescopes are at the top of mountains or in space: the more air you look through, the more distortion you will have.

        Comment

        • #5
          Tripplet918
          Senior Member
          • Mar 2022
          • 900

          When shooting long range, I can tune out mirages by backing out the magnification as much as I can and adjusting the focus. Obviously, if the heat source right up to your target, you cant really focus it out.

          Comment

          • #6
            middleofnowhere
            Senior Member
            • Aug 2010
            • 579

            I’ve looked through some of the best optics, nothing can defeat heat mirage.

            When hunting or observing wildlife, I try to get up high and look down. If you are shooting prone and have your spotter mounted low, the mirage will be worse than if you mount it higher, say at standing elevation. Sometimes just a 5’ elevation difference can make enough difference to see.

            Comment

            • #7
              Ki6vsm
              Senior Member
              • Sep 2013
              • 2354

              I was under the impression that the better the glass, the better you will see everything---including the heat waves/mirage. I think ELD shooters want to see it to some extent to help them read the wind out at distance?

              But if the target is just swimming, like you're looking at it through boiling water, I don't think there are any lenses that'll let you see "through" and correct for the distortion.

              Comment

              • #8
                Ki6vsm
                Senior Member
                • Sep 2013
                • 2354

                Originally posted by middleofnowhere
                I?ve looked through some of the best optics, nothing can defeat heat mirage.

                When hunting or observing wildlife, I try to get up high and look down. If you are shooting prone and have your spotter mounted low, the mirage will be worse than if you mount it higher, say at standing elevation. Sometimes just a 5? elevation difference can make enough difference to see.
                Reminds me, when I shoot out in the desert, later in the day when the ground heats up. If I'm shooting/spotting prone at targets just 100 yds away, my line of sight is only a foot or two off the ground, the bullseyes start to dance. My $1200 rifle or spotting scope, I might as well have left it at home. LOL

                Just started shooting off a folding tabletop last spring. It's not as stable as prone, but I can sure see a little better in the heat. That couple of extra feet elevation can make a difference.

                Comment

                • #9
                  ocabj
                  Calguns Addict
                  • Oct 2005
                  • 7924

                  You can't see through mirage. If different optics look better than another in heavy mirage conditions, what you're likely seeing is the effect of depth of field (or depth of focus). If you have an optic with deeper depth of field, you're able to see more fore and aft of a given point of focus. So when you try to focus on an object at distance, you're able to get the mirage and target more in focus at the same time, so it appears better to your eye.

                  When you have an optic with a very thin depth of field, more often than not what is happening is that you're trying to focus on target, but you can't see the target well because the mirage is blocking it. So you end up focusing either on the mirage or at some other point that isn't the target and you get a very unpleasant appearing image.

                  In either case in such conditions, spotting scopes are better used to watch the mirage itself (to call wind) or to watch the trace of the bullet in flight, rather than trying to watch the target itself.

                  Distinguished Rifleman #1924
                  NRA Certified Instructor (Rifle and Metallic Cartridge Reloading) and RSO
                  NRL22 Match Director at WEGC

                  https://www.ocabj.net

                  Comment

                  • #10
                    sigstroker
                    I need a LIFE!!
                    • Jan 2009
                    • 19586

                    Now I'm glad I only spent $70 on mine.

                    Comment

                    • #11
                      CSACANNONEER
                      CGN/CGSSA Contributor - Lifetime
                      CGN Contributor - Lifetime
                      • Dec 2006
                      • 44093

                      Learning to read mirage will make you a better shooter. That said, depending on the exact conditions, less magnification and better glass can help a lot when trying to view something at distance.
                      NRA Certified Pistol, Rifle, Shotgun and Metallic Cartridge Reloading Instructor
                      California DOJ Certified Fingerprint Roller
                      Ventura County approved CCW Instructor
                      Utah CCW Instructor


                      Offering low cost multi state CCW, private basic shooting and reloading classes for calgunners.

                      sigpic
                      CCW SAFE MEMBERSHIPS HERE

                      KM6WLV

                      Comment

                      • #12
                        gixxnrocket
                        Member
                        • Jan 2011
                        • 407

                        Yes, the idea of lens compression (same as a camera telephoto zoom) is that the increased magnification compresses space. Although your target will appear bigger, all the air and thermal layers within that view are going to be compressed into one flat image. This should not be confused with glass clarity, objective size, or eye relief benefits.

                        I assume you are spotting small groups. A remote camera is probably your best solution vs walking back and fourth. Electronic target systems are pricy.

                        Comment

                        • #13
                          cz74
                          Senior Member
                          • May 2020
                          • 912

                          Using a big black circular splatter target I was able to spot my hits at 300 yards, the heat mirage distorts the grid line splatter targets. Not many public ranges allow setting up target cameras for liability reasons I guess. Flying a small drone camera might be a good alternative, like gunblue490 in his videos.

                          Comment

                          Working...
                          UA-8071174-1