Humminbird Side Imaging Forums
Images, Snapshots and Videos => General Pictures and Screen Captures => Topic started by: ckbrown on June 22, 2012, 10:36:12 AM
-
Hey Guys,
I am in the same boat as einsteins in that I can not make any sense out of the following images.
The stills were captured from a recording my boss made with his new installation if a 898c SI with both stern and trolling motor transducers. Both are HDSI and are all new. We are now aware that the boat was moving too slow for good recording resolution and he will make another trip this weekend for another shot at recording thr views.
I have applied markers at points of intrest. I did not mark the images labeled 03-04m_47s.jpg, 03-11m_17s.jpg, 03-11m_17s-b.jpg, 03-18m_21s.jpg 06-00m_51s.jpg, 11m_01s and 30m_33s.jpg. Of these I have no experiance.
Please give us your interpertation of these images.
-
the boat needs to be moving....chuck
-
Yes sir Mr. Chuck.
We are aware of that.
But is there no information that can be gathered from the images or the data stream? I know that less than .2mph is very slow but ice fishers sit still and use these units or am I incorrect in my understanding of the technology? I would think having the raw data stream in the Humviewer display would show something.
I am not doubting you, I am trying to learn and understand.
Thanks for your assistance.
ckbrown
-
ckbrown....unless a fish swims thru the beam (he might show up)....but other wise you wont see any thing obvious...
try having the boat moving about 1mph for starters.
you will see more detail...this is for si.
if you are using 2d then you can tell the bottom makeup without moving...
chuck
-
chuck,
Thanks for your reply. My boss says that he is going to try again this weekend at a higher speed. I also posted a message here with some images that might contain fish. There is a 2D in a image. See what you think of those.
Thanks in advance.
ckbrown
-
OK good deal. Have him try about 1.5 to 2 mph and see how the recording look...
On another note if you are sitting still and a fish comes by the beam it will look like a line.
I will also look at your 2d in the other post..
Chuck
-
There is a learning curve to understand how SI works and how to interpret what you see. I think you need to do some serious study to understand the differences between SI and conventional 2D sonar (like ice fishermen typically use.) There are some creative ice fishermen that use their SI to scan under the ice, but they have their transducer mounted on a motorized mount to get the necessary movement.
It is all a little overwhelming when you start with this technology, but keep studying and it will grow on you....not trying to "talk down" to you......we have all gone through the learning curve. Some of it is not intuitive.
SI has a very thin narrow beam while traditional 2D is a cone shaped beam with the angle being determined by the frequency of the sonar....typicallty 83khz, 200khz, and sometimes 455khz. The smaller the number, the wider the cone angle.
Start studying this thread http://www.bbcboards.net/humminbird-sonar-gps/172968-all-sonar-information-resource.html (http://www.bbcboards.net/humminbird-sonar-gps/172968-all-sonar-information-resource.html) and you will have a pretty good understanding by the time you finish.
-
Bob, that is very good advice. I dont see it as talking down to any one. A lot of folks could benefit from your words.
Sonar is a science and as such needs education.
Learning hands on often produces the least learning and some bad habits due to not knowing the basics.
Forums such as this one and the folks who have created video learning are the backbone to becoming a good operator.
While these devices will power on out of the box there are a lot of settings to make it produce and then the experience of understanding what the screen is displaying thru usage.
The amount of information sharing on this forum is amazing and certainly helps the new user.
Thanks to all for helping and making the learning curve a bit shorter and not quite so steep..
Chuck