help with side imaging

[bowhunterhall]

Just purchased and installed the humminbird 899 unit have a few screen shots to post and would like to ask that some of you folks with more experience on these things than I have would break down the pics and tell me if theres anything that i missed

[bowhunterhall]

Just not sure exactly what I'm looking at yet I know some of these images on these things can be tricky to decipher

[rnvinc]

Do you need interpretation of the structure showing in the images ...??

Or interpreting how the SI image showing on the display actually lies under the boat...??

Your cursor positions and zoom box indicate that you already can pick out structure and fish schools....

Here's info to start with....
http://www.crappie.com/crappie/showt...preting-Images

Then tell me how we can help you "see" what you are "seeing"...

Rickie

[bowhunterhall]

yes.....im not sure whats a fish and whats not. I'm assuming the specks and bars shown in the water column are fish but what about the stuff on the lake bottom? Theres also some grainy stuff as well

[bowhunterhall]

rnvinc....if you could break down a couple of those shots for me it would help a bunch because all I know for sure is the structure. The other stuff that Im zoomed on i wasn't quite sure what was happening there.

[rnvinc]

You are correct that the white specks and "Bars" are most likely fish...

Fish show up fairly well against a soft bottom like in your images...fish over a hard bottom are more difficult to pick out...

Generally if the all the fish echoes in the SI image are "elongated" about the same length ...this is an indication that the "Chart Speed" is a little fast for that specific boat speed...(the faster chart speed is basically taking the "white speck" fish echo and "stretching" the white echo down the screen)...the faster the "Chart Speed" - the longer the fish echo will be stretched...

Sometimes "stretching" the fish echoes is a good thing...it can help you see that the "white dots" you are suspecting as fish ...do indeed get stretched into longer fish echoes making them easier to see...

Generally "Chart Speed" should be matched to boat speed for image ratio correctness in height and width of targets...(unless you want to stretch the fish echoes for picking them out easier as I described above)..

Ask more questions....

I'll work on editing 1 of your shots and circle a bunch of fish echoes while we work on other questions also...

Rickie

[bowhunterhall]

for example that last photo where i zoomed in.....is that a ball of bait fish or.....?

[bowhunterhall]

whats a good way to gauge chart speed to boat speed? usually I'm cruising around 3-3.5 mph however I'm pretty much stopped in these shots cause I'm playing with the si unit lol. I know people are looking at me driving around in circles thinking what the hell is this guy up to

[rnvinc]

for example that last photo where i zoomed in.....is that a ball of bait fish or.....?

I'm guessing fish because there is another small school of fish just to the bottom right corner of the zoom box and another school of fish at the very bottom of the SI image in the dark water column just to the right of the center line...

Rickie

[rnvinc]

whats a good way to gauge chart speed to boat speed? usually I'm cruising around 3-3.5 mph however I'm pretty much stopped in these shots cause I'm playing with the si unit lol. I know people are looking at me driving around in circles thinking what the hell is this guy up to

Just watch your speed readout when you are scanning and try to adjust the "Chart Speed" similar...1mph=1 Chart Speed....2mph=2Chart Speed....3mph=3Chart Speed...etc

Rickie