Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

stargazine_ep24_banner.thumb.jpg.56e65b9c9549c15ed3f06e146fc5f5f1.jpg

cabby

Using long USB cables

Recommended Posts

I've just recieved my Phillips web cam and need some advice on an a usb extension lead.

I know most people use their laptop's outside next to their scope but our laptop is quite old and slowwwwww! so I might use our main desktop computer for imaging. They say the longer the usb lead the less quality you will get. Most are 5m which seems to be the max optimum length, but I would need one of 10m. I have found one a 10M USB ACTIVE REPEATER EXTENSION CABLE LEAD USB2.0 which is supposed to solve the length problem. What do other people use?

Share this post


Link to post
Share on other sites

I use the 10M USB ACTIVE REPEATER EXTENSION CABLE LEAD USB2.0 its ok

I run the mount +camera from it.But I do use a power usb box before it go to the computer.

Edited by Starlight 1

Share this post


Link to post
Share on other sites

I use a 10m active repeater plugged into a 7 port unpowered hub. From this I run the mount via EQMOD, a QHY5 for autoguiding and either a DLSR,Atik CCD or a SPC900.

Never had a problem with connection or data rate, it's a bit slow with the CCD but that's only because it's USB 1.1 and won't store the images locally.

Share this post


Link to post
Share on other sites

Just one thought - unless you have a remote way of focusing the scope, you're going to be back and forth, back and forth checking the focus against the image on the screen.

Will probably keep you fit and warm, but will take up a lot of time! Could you not move one closer to the other?

Share this post


Link to post
Share on other sites
I know most people use their laptop's outside next to their scope but our laptop is quite old and slowwwwww! use?
May not be a problem. I've often used my old, slow (300MHz) lappy with a webcam - it seems to work pretty well.

So far as long USB cables goes, my experience is that they either work or they don't. I've never experienced the (image) quality dropping, the longer the cable is.

Share this post


Link to post
Share on other sites
Just one thought - unless you have a remote way of focusing the scope, you're going to be back and forth, back and forth checking the focus against the image on the screen.

Will probably keep you fit and warm, but will take up a lot of time! Could you not move one closer to the other?

I tried using my main PC and a 5m extension but never managed to get the focus right. Results were poor to say the least!

Share this post


Link to post
Share on other sites

thanks for the replies, I forgot about having to focus it so I would be in and out all the time.

I'll try the old laptop first with only the basics on and see if it works. I don't hold out much hope though as it judders just using Stellarium!!

Share this post


Link to post
Share on other sites
I forgot about having to focus it so I would be in and out all the time.

It's definitely a pain, I can vouch for that. With all the nipping in and out to make micro-adjustments to the focus I usually forget which way I need to turn the focuser knob! :) Hopefully one day I'll be able to afford an Ascom motorised focuser. That'd be really cool! That's next on my list after an obsy. But when that'll be, I have no idea ... :)

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.