The Graveyard

The Graveyard

screen shot taken from a video of the Graveyard. BIG trout down there and lots of them.


crasny1's picture

Posts: 6985

Date Joined: 16/10/08

Damn!!

Wed, 2011-08-03 08:29

Cant see the GPS Coords! Not a bad show off fish.

If someone one day can enlighten me on A-scope. Looks like pinging for a sub, and cant make heads or tails about it.

Neels

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"I would like to die on Mars. Just not on impact!!" _ Elon Musk

hlokk's picture

Posts: 4290

Date Joined: 04/04/08

As the sounder pings it gets

Wed, 2011-08-03 09:42

As the sounder pings it gets back the sound over a period of time. So at a time corresponding to 30m, it gets no signal at 38m it gets a weak signal and at 40m it gets a strong signal. The sounder then assigns red for high, and greens for lower then puts it on the screen. The next sounder pinging it adds the next column so you build up your picture that you're used to seeing on the sounder.

The A-scope is just the latest of the columns on your sounder, so its what the sounders seeing at this very instant. Instead of having a single pixel to the very right of your display, you can make this latest column a lot larger. What it does, is as well as displaying the colour, it also displays the width. Strong returns are wider and redder, while a weak return is blue/green and smaller. Imagine if you cut the A-scope thing in half (down the line), you'd be looking at a graph of signal intensity over time (which equals distance).

In the above shot, you can see three blips corresponding to the fish school, then the gap, then the hardish bottom, then the 'thickness' of the bottom (well, really just how dense it is). Not that on the right of the standard sounder output its not clear that there is another fish school right under the boat, right now. You have to wait a few seconds to see clearly, while the A-scope is instant. Whether its useful depends on the conditions, angler, spot, etc, but thats what it does.

Lucky Tim's picture

Posts: 2536

Date Joined: 28/11/07

 like Matt said, everything

Wed, 2011-08-03 10:59

 like Matt said, everything on your sounder screen is history. A scope is live, what is happening right there so you can see things coming a bit earlier and react. I find it useful

crasny1's picture

Posts: 6985

Date Joined: 16/10/08

Cheers Guys

Wed, 2011-08-03 12:08

Summed up nicely. Might have more off a look at that one, especially on drift or anchored up.

Neels

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"I would like to die on Mars. Just not on impact!!" _ Elon Musk

Posts: 9358

Date Joined: 21/02/08

Hmm its completely useless

Wed, 2011-08-03 12:18

Hmm its completely useless anchored, you have already drifted the ground ;)

We don't seem to use it much out deep either, but I guess that is because the drifts are so long.

Seems to be really good for finding the moment gound changes.

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crasny1's picture

Posts: 6985

Date Joined: 16/10/08

Have to admit

Wed, 2011-08-03 13:09

When you think about it, It doesnt realy help with fishing much. Mostly at anchor up here, or on the drift your lines arent below the boat anyway.

Almost always on Anchor up here in Dampier the current drifts bait and plakies out the back anyway. Have been playing with the side sonar and slowly getting to grips with that, so why add more complexity to the screen by adding A-scope. Would be bloody cluttered with side sonar, bottom lock, sounder and A-scope.

My simple scientific non techno brain just wont cope!!!

Neels

____________________________________________________________________________

"I would like to die on Mars. Just not on impact!!" _ Elon Musk

grayzeee's picture

Posts: 2283

Date Joined: 09/07/09

wouldn't be without a scope

Wed, 2011-08-03 13:07

wouldn't be without a scope after using it for a while

like a 3rd dimension to your sounding

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If I spent half as long fishing , as I do reading this bloody forum , I'd be twice the fisherman I am.