Re: [ap-gto] 900 GTO3


Feb 28 3:36 AM

 


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#51303 Feb 28 3:36 AM

Hi Vince,



I do not know how much experience you have so this might be toosimplistic.



To get started only controlling the mount:



.. 1.. Laptop with a LOT of memory..... You will wish you had thememory when your system gets more sophisticated.



.. 2.. Load your astronomy software:

........ a.. A planetarium program to see where the mount ispointing and to command the mount to Go To a selected object.

................... 1. "Cartes du Ciel" Freeware. But not asintuitive as others.. See:. "www.ap-i.net/skychart/en/start".

............. or. 2. "The Sky X". Expensive but it will doeverything; control mount, camera, filter wheel, focuser, autoguide,etc.

................................. You will need the PRO version forit to be able to talk to your other astronomy programs.

. . . . . . . . . . . . . . . . . . . . See:."www.bisque.com/sc/pages/TheSkyX-Editions.aspx"

............. or. 3.. Look on the web for "astronomy planetariumprogram. "

......... WHEN ENTERING WHICH TELESCOPE YOU WANT TO CONTROL IN YOURPLANETARIUM PROGRAM CHOOSE "ASCOM"



. . . .. b.. "ASCOM PLATFORM" So your programs do not need to havebuilt in drivers for the myriad devices they could control.

........................................ See:."ascom-standards.org/". Download Platform and any DOT NETfiles required.



........ c.. "AP V2 ASCOM Driver". See:"www.astro-physics.com/".. Click on "AP V2 ASCOM Driver" onlist on left side.

......................................... On the Driver page thatappears, click on link near top "Ray Gralak's ASCOM driver page".

. . . . . . . . . . . . . . . . . . . . . Under Quick Links, clickon link "AstroPhysics V2 Setup v5.07.02" to download.



.. 3.. Get a USB to Serial Converter.. Be sure it has a FTDI chipinside.. Cheap Chinese converters are nothing but trouble.



.. 4.. Get a Straight-through Serial Cable.. Read about thedifferent types of Serial Cables on the Astro-Physics web site.

. . . . . . . ........... Products > Serial / USB Mount toComputer Connectivity Products

........ If there is going to be less than 15 feet between yourmount and your laptop, buy the one on that page.

........ If you want your laptop to be up to 100 feet away from yourmount, ask Astro-Physics where to find a long one.



.. 5.. Connect. one end of the Serial Cable to your USB Converterand the other end to the top DB-9 connector on your

. . . . . .. CP3 Control Box.t



.. 6.. Plug the USB Connector of your USB to Serial Converter into aUSB Oort on your laptop.



GOOD LUCK



Richard



On 2/27/2016 01:24, salfranc@... [ap-gto] wrote: .Hi, Uwww.astro-physics.com/

I. have just manage to get a second hand AP 900gto3 and I know absolutely nothing about. this mount.I would like to connect it to a laptop and i amwondering what bits of equipment I need to do it.Thank you.molunt to

Vince



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#51304 Feb 28 6:20 AM

Hi Richard,Many thanks for the information. I am used to work with ASCOM so I think I will be OK with the information you gave me.Vince



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#51305 Feb 28 1:46 PM

Hi Vince,



You are welcome.

I forgot to mention that you can download the 900 GTO User Manualfrom the Astro-Physics website.



Richard



On 2/28/2016 06:20, salfranc@...[ap-gto] wrote:

.Hi Richard,Many thanks for the information. I am used to work withASCOM so I think I will be OK with the information yougave me.Vince



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#51318 Feb 29 8:18 AM

One word concerning USB to serial adapters :��

There are mainly 2 available brands on the mass market:

- FTDI as mentionned : the FTDI create a single COM port instance for the adapter. i.e. if you change the adapter from an USB socket from another, the COM port number remains unchanged. If you have 2 adapters in the system, each of them will have its own COM port number, whatever the USB socket is used.

- Prolific : the prolific driver will create an COM port instance for each of the USB socket you will use -> use always the same USB socket, otherwise you would have to change the COM number in the AP/ascom driver

-> so the FTDI is a little bit more friendly for non fixed setup at least. (You don't need to remember which USB socket should be used)



Unfortunately, there are some cheap copies of thoses chips also, I got one prolific copy and it was unstable.



Olivier



Le Dimanche 28 f.vrier 2016 22h47, "Richard Moore moorerh2@... [ap-gto]" ap-gto@yahoogroups.com> a .crit :



��

Hi Vince,



You are welcome.

I forgot to mention that you can download the 900 GTO User Manualfrom the Astro-Physics website.



Richard





On 2/28/2016 06:20, salfranc@...[ap-gto] wrote:

��Hi Richard,Many thanks for the information. I am used to work withASCOM so I think I will be OK with the information yougave me.Vince



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#51319 Feb 29 8:20 AM

p.s. ��you will also need a straight male-female DB9 cable. ��(=a serial link exterder cable)



Le Lundi 29 f.vrier 2016 17h18, OlivDeso olivdeso@...> a .crit :





One word concerning USB to serial adapters :��

There are mainly 2 available brands on the mass market:

- FTDI as mentionned : the FTDI create a single COM port instance for the adapter. i.e. if you change the adapter from an USB socket from another, the COM port number remains unchanged. If you have 2 adapters in the system, each of them will have its own COM port number, whatever the USB socket is used.

- Prolific : the prolific driver will create an COM port instance for each of the USB socket you will use -> use always the same USB socket, otherwise you would have to change the COM number in the AP/ascom driver

-> so the FTDI is a little bit more friendly for non fixed setup at least. (You don't need to remember which USB socket should be used)



Unfortunately, there are some cheap copies of thoses chips also, I got one prolific copy and it was unstable.



Olivier



Le Dimanche 28 f.vrier 2016 22h47, "Richard Moore moorerh2@... [ap-gto]" ap-gto@yahoogroups.com> a .crit :



��

Hi Vince,



You are welcome.

I forgot to mention that you can download the 900 GTO User Manualfrom the Astro-Physics website.



Richard





On 2/28/2016 06:20, salfranc@...[ap-gto] wrote:

��Hi Richard,Many thanks for the information. I am used to work withASCOM so I think I will be OK with the information yougave me.Vince







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#51321 Feb 29 9:54 AM

Olivier,�������� I would add one warning to your P.S. comment. You willfind .different. (inconsistent) cable attachment hardware.�������� I have a Startech 2-port FTDI USB-Serial and the DB-9has .nuts.�� to attach a serial�� extender cable,�� while another(SARGANT) single-port version, has attachment .thumb screws. which plugsdirectly into the CP3 with a 4 foot cord. The former (pair) of DB-9.s require adifferent kind of serial extender cable,�� That one won.t plug directly intothe CP3,�� even if instead, you decided to use a USB extender cable at thePC end.�������� I just don.t understand why adapter makers can.tstandardize on the DB-9 attachment hardware . I don.t know which one should bethe communications industry standard, (screws or nuts). So, have a close look atthe lock down hardware, before buying your serial extender cable.��Joe Z.��From: mailto:ap-gto@yahoogroups.comSent: Monday, February 29, 2016 11:20 AMTo: ap-gto@yahoogroups.comSubject: Re: [ap-gto] 900 GTO3



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#51322 Feb 29 10:31 AM

The type of connector on a serial cable goes way back to the early days of serial interfaces and modems. ��A serial interface can be of two types: ��DTE and DCE. �� In general, the DTE is the computer end of the cable and the DCE is the modem end of the cable. ��A computer with a serial interface has a male DB25 and the modem has a female DB25. ��So a serial cable needs to have the matching male / female connectors. ��This prevents the cable from being connected backwards. ��Short story -- the CP3 / CP4 functions as the modem end of the cable so it has a female connector. ��The matching USB to serial cable must have a male connector.

Charlie



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#51323 Feb 29 10:46 AM

Charlie,�������� Yes, I knew that. However, the .mounting hardware.(screws or nuts), that are attached to the DB-9 (male or female) cable endshell, doesn.t seem to have a standard. Thus I have adapters with differentmounting hardware.�������� I think the problem is that the coms standard assumedpanel to device cable connection . extension cables were not considered, orperhaps the modern day adapter makers, didn.t follow the logic, so beware.��Joe



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#51324 Feb 29 1:38 PM

Amazon.com: Valley Enterprises USB to RS232 Serial DB9 Cable Adapter FTDI Chipset (10 Feet): Computers & Accessories

Amazon.com: Valley Enterprises USB to RS232... USB to standard 9-pin Male / DB9 serial port with screws Supports RS232 Serial DB9 devices Supports remote wake up and power management FTDI USB chi...



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#51325 Feb 29 1:57 PM

Nice one,�� Floyd.�������� That.s a generous 10 feet, very rare.������ Too bad they don.t have a Dual serial adapter withscrews, like this single one has, even a 6-footer. I was thinking a dual serialcable would be handy if you have a USB hub attached somewhere right ON the OTA,to serve multiple serial devices, without all the extra cabling to tie up, andstill lose just one USB hub port, for two serial devices.��Joe



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#51326 Feb 29 2:39 PM

On Mon 29 Feb , at 13:57, 'Joseph Zeglinski' J.Zeglinski@... [ap-gto] ap-gto@yahoogroups.com> wrote:

>

>

>

> Nice one, Floyd.

>

> That.s a generous 10 feet, very rare.

> Too bad they don.t have a Dual serial adapter with screws, like this single one has, even a 6-footer. I was thinking a dual serial cable would be handy if you have a USB hub attached somewhere right ON the OTA, to serve multiple serial devices, without all the extra cabling to tie up, and still lose just one USB hub port, for two serial devices.

>

> Joe

>



i use this one which has 2 serial port and I have a small 4 port usb hub (same brand) on the mount :



usb to serial adapter (uses FTDI chipset, works on Windows, OS X and Linux) : www.amazon.com/gp/product/B007UR2M48

powered usb hub : www.amazon.com/gp/product/B001H7AFO6



How it looks : www.rti-zone.org/astro/equipment/power.png



Regards, Rodolphe



--



| Rodolphe Pineau RTI-Zone |

| www.rti-zone.org/ |

| Robotics / Unix / Mac OS X / Astronomy |



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