Not sure, but this article may shed some light. https://www.webmd.com/infertility-a...*-to-scrotum-length-predicts-poor-sperm-count
Be more honest Epson but the possibilities are mind-blowing.
- Thread starter John Gowland
- Start date
Not sure, but this article may shed some light. https://www.webmd.com/infertility-a...*-to-scrotum-length-predicts-poor-sperm-count
There is not a problem seeing objects in the dark. As I mentioned I saw my MP 2.5 km away with a very cheap torch attached bought fro a local hardware store.
Flying in the dark can be fun but the challenge is to see it in daylight. All drone flyers have the same problem, they fly at a distance look at their r/c and they lose the craft. Then you have to bring it back a bit and start again. This is the only time I use the RTH. I suspect a lot of us do. This is because we don't know where it is.
The issue is much improved with the BT glasses because your time/distance from looking at the r/c display is a few mm away not many cm. Yes in ideal conditions you can see through the glasses, never at a distance though.
So we need a short term solution to see our craft at a distance and quickly find it every time if we blink or look away.
The long term solution, as I mentioned, is an augmented construction of the craft generated by multiple sources of data.
Drone developers really need to start adopting the approach manned aircraft designers/constructers use.
Follow the same conventions of bright visible lights and the same colour orientation codes.
No one has a problem seeing the smallest manned aircraft in the sky. And I am sure they have thought about it but the power needed is a serious challenge to battery energy.
However this is not now a real issue. It is not an excuse to say it takes too much power from the flight time.
At first I thought it all a matter of the amount of lumens. This is not true. Its how you use the lumens, the kind of material the direction of the light the kind/colour of light.
I can see a very cheap torch at 200 lumens better than a relatively expensive cube at 1,500 lumens. And the torch lasts for 4 hours via a usb charge, as is the Cube. The Cube lost power after less than 20 minutes. There are ten levels with the cube. Oh its also a lot heavier and very ugly standing high while I tape the low lying cheap torch, about the size of a quiet small lighter.
Its not about muscle its about intelligence.
lannes makes an excellent point about red being easy to see in the day and pointed to a bike rear lights. That is a good place to start, as others have pointed out. After all bike light technology has had a lot more time and money dedicated to it than drone lights.
But so have manned aircraft.
We should not be having this discussion its so simple. Its a shame we have to sus it out companies like DJI should have sorted this out years ago.
So I bought a bright, red, cheap rear bike light and am going out now to try it out. I doubt it will work particularly well but plan b is to go to a local sports/camping store that I know sell quality bike lights. lannes bike example says it can be seen 2 km away. So we know its doable.
Plan c is to follow up on a quick search I did with the words "best visible red bike lights"
Interesting search.
Flying in the dark can be fun but the challenge is to see it in daylight. All drone flyers have the same problem, they fly at a distance look at their r/c and they lose the craft. Then you have to bring it back a bit and start again. This is the only time I use the RTH. I suspect a lot of us do. This is because we don't know where it is.
The issue is much improved with the BT glasses because your time/distance from looking at the r/c display is a few mm away not many cm. Yes in ideal conditions you can see through the glasses, never at a distance though.
So we need a short term solution to see our craft at a distance and quickly find it every time if we blink or look away.
The long term solution, as I mentioned, is an augmented construction of the craft generated by multiple sources of data.
Drone developers really need to start adopting the approach manned aircraft designers/constructers use.
Follow the same conventions of bright visible lights and the same colour orientation codes.
No one has a problem seeing the smallest manned aircraft in the sky. And I am sure they have thought about it but the power needed is a serious challenge to battery energy.
However this is not now a real issue. It is not an excuse to say it takes too much power from the flight time.
At first I thought it all a matter of the amount of lumens. This is not true. Its how you use the lumens, the kind of material the direction of the light the kind/colour of light.
I can see a very cheap torch at 200 lumens better than a relatively expensive cube at 1,500 lumens. And the torch lasts for 4 hours via a usb charge, as is the Cube. The Cube lost power after less than 20 minutes. There are ten levels with the cube. Oh its also a lot heavier and very ugly standing high while I tape the low lying cheap torch, about the size of a quiet small lighter.
Its not about muscle its about intelligence.
lannes makes an excellent point about red being easy to see in the day and pointed to a bike rear lights. That is a good place to start, as others have pointed out. After all bike light technology has had a lot more time and money dedicated to it than drone lights.
But so have manned aircraft.
We should not be having this discussion its so simple. Its a shame we have to sus it out companies like DJI should have sorted this out years ago.
So I bought a bright, red, cheap rear bike light and am going out now to try it out. I doubt it will work particularly well but plan b is to go to a local sports/camping store that I know sell quality bike lights. lannes bike example says it can be seen 2 km away. So we know its doable.
Plan c is to follow up on a quick search I did with the words "best visible red bike lights"
Interesting search.
This is the best result I have had so far. The white 200 lumen torch is designed to use on your head for DIY work. It cost $30 AU from a local hardware store near me. It blew away the $120 Lume Cube which although a 1,500 lumen is a very diffused light. You can only see the Lumen Cube strapped on to a MP a few hundred meters away. It is designed for photography and studio video work.
The red light was on of a few I tried, some strobe some not. Again they could only be seen strapped to the MP a few hundred meters away.
I now have enough lights to light up a town of Christmas trees.
I am sure I could have gone further and still see the light clearly. The wind was very high and I had to return home. With a more high powered narrowly focused directed light you can see, I guess 2 or 3 Kl. I am sure others have achieved better distance than this but I thought I would share if you are having the same problems as I am at finding my bird if I look away for a second. Even with the BT 300 glasses a few mm to look at the control panel stops me finding the MP seconds after.
The blue tack is just to position the torch while I sellotape it. It also raises the back end so when the craft is tilting forward especially in sports mode the light can be visible. The sellotape is amazingly strong, you can not rip it off, you would have to damage the MP to do so. The only way to remove it to change batteries is to cut, peal off and reapply fresh tape.
Its just for testing of course.
Hope it helps someone.
You can imagine how easy it would be for a MP to have inbuilt to it such a light. It could even have intelligent self aligning to you via the r/c and give you a few seconds of powerful strobe to let it be identified in the sky. There is loads of room inside that MP. And there are loads of options that DJI could utilise to make seeing the MP in any conditions apart from the augmented idea I outlined earlier.
The red light was on of a few I tried, some strobe some not. Again they could only be seen strapped to the MP a few hundred meters away.
I now have enough lights to light up a town of Christmas trees.
I am sure I could have gone further and still see the light clearly. The wind was very high and I had to return home. With a more high powered narrowly focused directed light you can see, I guess 2 or 3 Kl. I am sure others have achieved better distance than this but I thought I would share if you are having the same problems as I am at finding my bird if I look away for a second. Even with the BT 300 glasses a few mm to look at the control panel stops me finding the MP seconds after.
The blue tack is just to position the torch while I sellotape it. It also raises the back end so when the craft is tilting forward especially in sports mode the light can be visible. The sellotape is amazingly strong, you can not rip it off, you would have to damage the MP to do so. The only way to remove it to change batteries is to cut, peal off and reapply fresh tape.
Its just for testing of course.
Hope it helps someone.
You can imagine how easy it would be for a MP to have inbuilt to it such a light. It could even have intelligent self aligning to you via the r/c and give you a few seconds of powerful strobe to let it be identified in the sky. There is loads of room inside that MP. And there are loads of options that DJI could utilise to make seeing the MP in any conditions apart from the augmented idea I outlined earlier.
Now I can find my MP at any time in any position up to 900 meters away. For me than is very important, I can fly with much more freedom.
At 1200 and 1000 meters I could see the Mavic after the strobe light found it for me but not very well. At 900 meters after moving the craft to the side so I could not see the beam I could clearly and easily find the drone time after time.
So, with a simple, cheap torch you can identify your drone and then see it without a light with the naked eye and do it every time.
But the main point is it gives me great freedom to fly a few hundred meters away if it’s in front of dark objects such as tree lines. I no longer have to raise it into the sky to see exactly where it is. It means you may need to fly sideways to see it all the time or fly the way you do then stop reposition the craft to see the light and then continue.
I am going to use this torch just about every time I fly.
I hope it helps others if you are finding it difficult to find your drone in the sky after blinking or looking away for a second.
I don’t think I could have done this without the BT glasses but to install any cheap similar torch you can find your drone with a phone tablet or anything ells you use.
At 1200 and 1000 meters I could see the Mavic after the strobe light found it for me but not very well. At 900 meters after moving the craft to the side so I could not see the beam I could clearly and easily find the drone time after time.
So, with a simple, cheap torch you can identify your drone and then see it without a light with the naked eye and do it every time.
But the main point is it gives me great freedom to fly a few hundred meters away if it’s in front of dark objects such as tree lines. I no longer have to raise it into the sky to see exactly where it is. It means you may need to fly sideways to see it all the time or fly the way you do then stop reposition the craft to see the light and then continue.
I am going to use this torch just about every time I fly.
I hope it helps others if you are finding it difficult to find your drone in the sky after blinking or looking away for a second.
I don’t think I could have done this without the BT glasses but to install any cheap similar torch you can find your drone with a phone tablet or anything ells you use.
lannes
Well-Known Member
Would using a telephoto lens be considered allowable VLOS ?
You could use a AF telephoto lens with live view on a Apsc Canon DSLR to view the drone
You could use a AF telephoto lens with live view on a Apsc Canon DSLR to view the drone
I don't think so because you have to see it with your naked eye shame though because otherwise I would have got a Borg ocular implant must be one on eBay or amazon somewhere
However I am very happy with the result means I can fly my drone a lot more happily seeing it at any time I want.
However I am very happy with the result means I can fly my drone a lot more happily seeing it at any time I want.
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