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Thread: Powered USB hub for guide camera and imaging camera

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    Default Powered USB hub for guide camera and imaging camera



    I'm still working on getting everything set up for guiding. After more consideration and reading, instead of using the ST4 "On Camera" connection like I originally planned, I installed the latest ASCOM platform and the Celestron ASCOM drivers. I tested this set up with my AVX, PHD2 and Nexremote with the RS232 connected to the HC via a USB connection on the laptop. Seems everything is working (this is daytime testing inside since clouds have me blocked).

    I would like to eliminate some of the cabling going to and from the laptop. I have a couple of powered USB hubs lying around, could I use that to connect the guide camera and imaging camera to the hub then only one cable to the laptop? Will the 2 cameras connected via the one cable to the laptop cause a conflict or throttling?

    If that is possible, could I also connect the USB/RS232 to the hub then to the mount from there?

    One thing I did learn is that I can't use Nexremote, Stellarium and PHD2 at the same time, Duh, two programs trying to control the mount at one time. No issues though, if I want to use Stellarium via Nexremote I can just stop the guide camera connection and connect to the mount via Stellarium temporarily, then switch back.
    Dennis. ~ 45 years of astronomy and not giving up anytime soon!
    Explore Scientific 16" truss DOB; Explore Scientific 152mm carbon fiber triplet w/3" Feathertouch; ES 80mm triplet; Apertura 10" DOB w/tweeker's; Celestron 9.25" Edge; Celestron Edge 14" with Feathertouch; Celestron CGE Pro mount; Celestron AVX mount with ADM "D" saddle; QHY Polemaster; and my first, a Sears 60mm F/11 doublet; ZWO ASI294MC-Cool; ES field flattener; ES 3" flattener/FR; Televue 0.8 field flattener/FR; lots of TV and ES eyepieces; Lunt solar wedge with Celestron XLT 102

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    Default Re: Powered USB hub for guide camera and imaging camera

    Hi, couple of things dont use cheap USB hubs or cheap USB cables its a false economy. Check each cable from PC to device first then stick it in the HUB. For USB to Serial I would suggest anything witha PL2303 chip these work I use them, again dont use cheap ones they are more trouble than they are worth.

    Hope this helps
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    Default Re: Powered USB hub for guide camera and imaging camera

    I had issues using a powered HUB with my guide camera, zwo 120, but not using the power it works great. If I was running it as a web camera for high frame rate I would want more power but the un powered hub does enough to connect my ZWO, QSI, and mount to a hub and then a 15 ft cable to the laptop.
    Yes the mount hub with connect well.
    I haven't used Nexremote but Cartes De ceil, PHD2, and SGP all work well together for celestron I just leave the hand control plugged in and align first then CDC to control fromt here.
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    Default Re: Powered USB hub for guide camera and imaging camera

    Dennis - I have been running the configuration you are looking for, imaging camera, guide camera, and Hand Controller connection into a hub. The hub is velcroed to the accessory tray, and a single cable runs from the hub to the PC. I have a powered hub - a Belkin UltraSlim 7 port USB2 version - and I don't have to power it to get connectivity. I have been using it without problem since last summer.

    I use BYEOS, PHD2, and AstroTortilla as my control software for the various components.

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    Default Re: Powered USB hub for guide camera and imaging camera

    Huh I routinely use SGP, PHD, and sometimes Starry night all at the same time with no connection issues

    I use the powered USB hub linked below which also deals with the imaging camera, the guide camera, the filter wheel, and autofocuser. It is quite busy

    I do however use a quality USB cable from the usb connection on the hand controller to the pc directly for the ASCOM control of the CGX mount. I found if I tried to run it through the hub it was a little flakey. I like this cable because it has a rugged braided outer jacket.

    https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

    But when I was using a direct pc control with EQmod that too was plugged into the hub.

    https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

    I mainly picked that hub because the input dc power was 12 volts and it was a simple matter to make a power plug to use my battery. I did have to put electrical tape over the bright blue led's along the sides to cover them up.
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    Default Re: Powered USB hub for guide camera and imaging camera

    Thanks guys, I'll give it a shot. I though it should work, just wanted more informed input. I do have nice braded USB cables that I use for everything. I'm just trying to avoid having so many wires running back and forth. I use a table that sits about 6 feet away from the mount and the less cables to step over the better. I especially like the idea of a 12V power hub.
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    Dennis. ~ 45 years of astronomy and not giving up anytime soon!
    Explore Scientific 16" truss DOB; Explore Scientific 152mm carbon fiber triplet w/3" Feathertouch; ES 80mm triplet; Apertura 10" DOB w/tweeker's; Celestron 9.25" Edge; Celestron Edge 14" with Feathertouch; Celestron CGE Pro mount; Celestron AVX mount with ADM "D" saddle; QHY Polemaster; and my first, a Sears 60mm F/11 doublet; ZWO ASI294MC-Cool; ES field flattener; ES 3" flattener/FR; Televue 0.8 field flattener/FR; lots of TV and ES eyepieces; Lunt solar wedge with Celestron XLT 102

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    Default Re: Powered USB hub for guide camera and imaging camera

    I have my table setting right next to the mount. The connection cable that comes with that hub is about 30 inches long. I have learned it is best to walk all the way around the mount instead of 'stepping over' cables.
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    Default Re: Powered USB hub for guide camera and imaging camera

    I'm just in the habit of having the table sitting in that spot because when doing visual, I need access 360 degrees around the mount. I have my deep cycle battery sitting under the mount, a power converter cable from the battery to my laptop and the RS232/USB cable for Nexremote operation run under a cable protector that is intended to be used on carpet. That keeps the cables low and the tapered edges of the protector keeps me from tripping on the cables. So far anyway...

    I even thought about using a masonry blade and cutting a small "V" shaped trench in the concrete patio to lay the cables into so they would be below grade.
    Dennis. ~ 45 years of astronomy and not giving up anytime soon!
    Explore Scientific 16" truss DOB; Explore Scientific 152mm carbon fiber triplet w/3" Feathertouch; ES 80mm triplet; Apertura 10" DOB w/tweeker's; Celestron 9.25" Edge; Celestron Edge 14" with Feathertouch; Celestron CGE Pro mount; Celestron AVX mount with ADM "D" saddle; QHY Polemaster; and my first, a Sears 60mm F/11 doublet; ZWO ASI294MC-Cool; ES field flattener; ES 3" flattener/FR; Televue 0.8 field flattener/FR; lots of TV and ES eyepieces; Lunt solar wedge with Celestron XLT 102

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    Default Re: Powered USB hub for guide camera and imaging camera

    Well like I said the cable that comes with that particular powered hub is an odd affair never seen one like it and it is only about 30" long. Just a heads up.
    Scopes: Orion 130mm APO Triplet, Orion 8" f4 astrograph, 10" RC Mount: Celestron CGX-L Guiding: Orion 60mm f4 scope, Starlight Loadstar, PHD2 software - Cams: Planetary: ASI120mc, DSO:Atik 383L+, SGPsoftware Processing : Regisax, Deep Sky Stacker, Star Tools, Pixinsight Assistant: One very large cat
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    Default Re: Powered USB hub for guide camera and imaging camera

    Get a powered USB Ethernet extension hub if you want reliable and super fast. I'm running over 125 ft right now and can upload a 5 minute RAW file in about 2 seconds. USB 2 versions are very affordable right now. Iogear makes and excellent one. USB 3 versions are still a bit pricey though.

    https://www.iogear.com/product/GUCE64
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