Thread: Some screenhots from today 5/24

Your DI pics of those fish are great I'm still trying to understand what I'm seeing on the SS also.

Originally Posted by zummy

Yeah I was trying to find them with side scan, but struggled and switched to downscan. Got these instead. Spotlocked over the top and it was game on.

Doug does a good job explaining side scan in this video. Doesn't matter what brand, the concept is the same.

https://www.youtube.com/watch?v=3xe6pLPdMKc

Originally Posted by minnowtime

Does the side image beam go out at 90deg. angle or at a lesser degree?

The center "Main Axis" of each SI sound pulse is emitting at 30° from horizontal....the sound pulse is strongest at this "Main Axis" ...and then the sound radiates out and away from the xducer in an "ever-decreasing" sound strength....

Below is the beam form of the right SI sound pulse....mirror this with the left SI sound pulse...(and remember...the SI sound pulse is a thin slice...so the beam form shape below is only a couple inches thick front to back....with each single ping)....



Rickie

See if this helps zummy...

I took this screenshot of yours...


-----------------------

I edited the screenshot...
*The green circles are fish (white echoes)....
*The blue circles are depressions in the lake bottom...



Rickie

Here are some from today
I see a fish just to the left of the boat in this one


I don't see much of anything here


These two are obvious

Here's your 2nd shot again...



Rickie

IMO turn your contrast down some.

Rickie,on 800 khz,what do first null mean?