Educational Articles » humminbird side imaging

Side Imaging training Posted on July 15, 2018

Side imaging training

Above the black is smeared because I was turning the boat.

The green arrows shows patches of weeds in boulders and yes this is a good place to fish!

side imaging interpretation

Understanding unusual side imaging images Posted on May 08, 2018

Warren Parson captured some great video of flooded structure on Devils Lake with his Aqua-Vu HD camera

Watch tutorial

Devils Lake side imaging

Crappies on different sonar brands Posted on August 27, 2017

Learn how crappies display on different sonar brands.

Crappies are a much sought after fish and I get a lot of questions about what they look like on sonar. Crappies often suspend over open water, making  them  difficult to target. In this session I will show what they look like on different sonar brands.

Image #1 shows crappies on a 2D Garmin sonar using High Chirp.

Image #2 shows the same school with a Humminbird using the MEGA transducer on High Chirp.

Image #3 is the same school using a Lowrance TM150 transducer set at 105 kHz frequency.

Lowrance Crappie

Image #4 shows the same school with the Humminbird side imaging

Humminbird side imaging crappie

Next are 2 videos showing the Panoptix with 2 different transducers. The PS 30 looks down and to the side and the PS 21 looks to the side.

I use side imaging or the PS 21 to find the school when it moves since they see to the side and I use Minn Kota Spot Lock to sit on the school and vertically jig for supper.

PS 21 video

PS 30 video

Autochart Pro side imaging mosaics Posted on May 01, 2017

You can make mosaics with Humminbird Helix models using Autochart Pro which is a computer app. You record the sonar data to a blank card and use Autochart Pro to make the mosaic and export it as a mosaic to your Helix. You will use it as the chart with your boat cursor on this map. If you find tech easy this is a good way to use Spot Lock on your favorite reef spot.

AutoChart side imaging mosaic

Side Imaging, Aqua-Vu and Boulders Posted on December 13, 2016

Side imaging produces nice images of how boulders really look like and I use it to find key spots that I miss with 2D and down imaging sonar.

This image is a boulder reef. On this image the biggest boulders are next to smooth bottom. this also means there is probably a dropoff next to the boulders. Walleyes like transitions, big boulders and dropoffs so I have 3 key ingredients to start my hunt for groceries for my famous fish tacos. I don't see any fish but fish are difficult to see in boulders since they also show up as white.

Humminbird side imaging boulders

 This link will show an Aqua-Vu video of the transition. watching it confirms it is a good spot and helps understand the side imaging

 Aqua-Vu video

Lost Fish, How To Find Them With Sonar Posted on December 13, 2016

Ever wonder what to do when you are slowly moving jig or rig fishing and lose the fish on sonar?

I had these fish near weeds located with down sonar (2D and down imaging).

If they disappear I look at the side imaging on a different screen to see if they are left or right. Like this image.

I place the cursor on the fish on the side imaging and create a waypoint and then move the boat to the fish before they move too far. It is easy, once you catch a few fish this way you add it to your fishing tools.

Side Scan Fish Posted on August 02, 2016

Finding fish with side imaging is difficult for most anglers since we don’t have enough screens on the boat. We tend to select map, sonar and Down Imaging and forget about the side imaging, but finding fish is easy if you have the right conditions. One of the problems we run into is that a rocky bottom reflects so much of the sonar it’s bright and fish show up as bright areas which means there is little contrast and they are easily hidden, while softer bottoms show up darker so fish really show up in this image.

Notice all the fish on the right on the first image.

I usually leave my unit on 455 kHz since you get much more range than with 800 kHz.

The next image shows larger fish in the red circle and smaller fish in the green circles. Notice the depth is 3.7 ft.

But don’t be fooled by logs on the bottom left over from the timber logging industry.

Yellow arrows are pointing out the logs.

The red circles are around fish which show up as white dots.

Lowrance StructureScan

The next image has more fish that are longer.  Here we need to remember the length of the fish is dependent on boat speed.  The faster the boat travels the fewer sonar pings that are going to cover the fish so their length will show up shorter.

Another good way for identifying fish is the shadow the fish cast, the farther away the shadow is from the fish the higher in the water column the fish is located.

The red and black circles show fish and shadows. The fish nearer the center are harder to see since the bottom is brighter nearer the center so the shadow becomes helpful in identifying the fish.

Lowrance Structurescan

Learn Sonar Session 16 Posted on July 27, 2016

Interpreting sonar, down imaging and side imaging is very difficult. I have 3 great images to use as examples for teaching interpretation of sonar.

The left side imaging is showing the drop-off as dark (yellow arrows point to the drop-off on the map and side image). Bright is the strongest return and black is none. Since sound goes in a straight line the drop-off is dark.

The red circle is showing fish on the shallow side and I think they are about where the red arrow is pointing on the map. I would mark a waypoint on the side image and cast to the fish since they are shallow. Notice the boat is in 2.9 feet.

The next image shows the drop-off as dark (red circle) and fish are suspended near the drop (yellow arrow). Fish show up well on side imaging since they show up as bright on the dark background. Hard bottom is also bright which makes fish difficult to see on bright background.

This is an amazingly clear image of boulders (green arrow) next to trees (yellow arrow) that slid from the bank into the river.

The red arrow shows a fish in the trees and the white arrow shows a small drop-off.

 

Humminbird ONIX amazing Side imaging Posted on May 23, 2016

I was out casting for shallow walleyes today and my ONIX side imaging was amazing.

I was in 2.8 feet of water and took this screenshot. Notice the range of 119 on each side and  the screen is loaded with fish.

The fish are in the green circles and some rock in the black circle.

I was able to identify some of the fish since we caught sheephead and catfish plus I saw a school of carp swim by and a 5 foot sturgeon also swam by. No walleyes but we had an amazing experience.

 

Understanding DownScan/Down Imaging 2/25/2105 Posted on February 25, 2015

DownScan Interpretation


This explanation is to help explain what you see with down imaging, it is pertinent to all brand’s down imaging.
Down imaging has a wider cone and will show targets off the side better than the 2D sonar (traditional sonar 200 kHz).
Notice the man-made structure plus the rocks.
Sonar tells us the distance to the target. The man-made structure pointed out with the white arrow is 8 feet from the transducer. How about the red arrow? It is pointing at rocks and long strips of something man-made. You can’t tell which side it is on since the left and right edge of the cone is combined, something 12 feet from the transducer on the left with be superimposed on something 12 feet from the transducer on the right side.


If you have side scan you can see which side of the boat a target is.
Notice the rocks are opposite the man-made structure but on the DownScan they are overlapped.

The next example shows fish by a tree on DownScan and the side scan shows the same fish to the left side. The problem is we don’t have enough screens to show all we want. I like to see the map, 2D sonar, down imaging and side scan and that is a lot of dash space to be used. I like one model with splitscreen sonar and DownScan and one splitscreen map and side scan with the side scan using 2/3 of the screen since wide screens are best for side scan like I used 2/3 for sides can in the image.