[PSUBS-MAILIST] (no subject)

Mon Apr 23 13:08:12 EDT 2018

 Brian,  I think the visibility issue may have been my lighting (-;  also I made two trips to the lake back to back and the protection dome was super dirty.  I removed and cleaned the dome and have also moved the light.  I also discovered that putting the light in the clear tube makes it so the light broadcasts strait up and strait down.  I am making a light shroud that I can adjust and hopefully all will be good in Gamma world.Hank
    On Monday, April 23, 2018, 7:45:25 AM MDT, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

 Hank,    A friend of mine has a cabin up in the high Sierras ,  his cabin is below the reservoir ( very large lake)  anyway one year the stream coming out of the reservoir was running all muddy. We figured that they were doing some work on the dam or something, but that was not the case.  We hiked up to the lake and it looked crystal clear .  Found out later that there was a slide on the other side of the lake and the silt was traveling on the bottom of the lake all the way to the outlet of the dam.  The slide happened about a week before the muddy water started showing up in the stream.  maybe something weird like that could be going on with your lake.  Brian  

--- personal_submersibles at psubs.org wrote:

From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
To: personal_submersibles at psubs.org
Subject: Re: [PSUBS-MAILIST] (no subject)
Date: Sun, 22 Apr 2018 17:21:50 +0000 (UTC)

 Thanks Sean,  that is Premier Lake.   I lie your idea to move the light so it is not inline with the viewing angle.  It would then be more like a street light.My camera is just a cheap thing, and I think I had my light angled down too much because the inside of the sub was lit up lol.  Neat trick with the white object in the gripper! Do you think the wind and waves can make the lake loose clarity in one day?Hank
    On Sunday, April 22, 2018, 9:25:44 AM MDT, Sean T. Stevenson via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

 Good video Hank. What lake were you in?

Also wondering what camera you were using inside the sub to film this? If it supports white balancing using a reference, one trick I have seen done is to hold a white tablet in the manipulator jaws with the arm extended, and then zoom in on that through the viewport / dome to perform a camera white balance and better restore true colour on video.

As far as lighting goes, one possible thing you could do to improve apparent clarity is to physically move your light sources outboard, so that they aim towards centre front at an angle, instead of being right in line with your viewing direction. This tends to minimize backscatter from suspended particles in the water.

Sean

-------- Original Message --------
On Apr 22, 2018, 08:30, hank pronk via Personal_Submersibles < personal_submersibles at psubs.org> wrote:

 Cliff, sorry I managed to have it on the private setting, it should work now.  Ignore the dirty protection dome.  The travelling on gravel roads makes it super dirty.  I need to address that.  I am thinking also that I need to lower my light.  I have been blaming a storm for bad visibility, but I am not sure if waves and wind can effect the clarity that much?  Maybe my light is not sufficient?Hank
    On Sunday, April 22, 2018, 7:07:38 AM MDT, Cliff Redus via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

 Hank, when I try and run this video, YouTube comes back with a "Video not available" message.  Can you reload?  
Cliff
On Sun, Apr 22, 2018 at 4:37 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 New video from Premier Lake, shows the arm working with some depth.Hank
   ----- Forwarded Message ----- From: xxx xxxxx <mp13 at live.ca>To: hanker_20032000 at yahoo.ca <hanker_20032000 at yahoo.ca>Sent: Sunday, April 22, 2018, 3:32:29 AM MDTSubject: 
  https://www.youtube.com/watch? v=-JV-dQ8AWiw

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