Posted 03 March 2009 - 08:37 PM
I have downloaded and installed ASCOM 4.1 and rebooted the PC. I have downloaded the updated pulse guide drivers for LX200/Autostar and replaced the ones that came with the default ASCOM drivers.
Here's my problem, after starting up PHD, clicking on the telescope icon, selecting Meade LX200 and Autostar, selecting COM5 (which is where my adapter shows up at) and clicking the pulse guide button then clicking OK, PHD thinks for a second then goes to 'Program Not Responding'.
I tried to use the Pictor Guiding in Autostar Suite and when trying to connect it says device not found.
Posted 03 March 2009 - 09:32 PM
A standard 6-pin to 6-pin cable will not interface the LXD75 - more accurately the AutoStar controller attached to it - to your PC serial port. The Meade #505 Connector Cable Set includes the necessary parts to do this.
But there's nothing all that special about it. Only TXD, RXD and GND are required; you just have to get the right wires in the right pins.
Rather than test the TOS I'll recommend you use a search engine to look for "LXD75 serial cable" and build one.
Posted 03 March 2009 - 10:35 PM
Posted 04 March 2009 - 11:35 AM
Posted 04 March 2009 - 12:29 PM
Posted 04 March 2009 - 02:08 PM
--> Connect the RJ-11 (6-pin) end of the #505 cable to the serial port DB-9 adapter and to the PC
--> Connect the RJ-6 end (4-pin) to the AutoStar and the AutoStar into the scope
--> Boot the scope and get past the initial screens
--> Open Hyperterminal (or equivalent) on the PC and connect to the scope using 9600,N,8,1 on the COM port.
--> In HyperTerminal, type :GL#
AutoStar should respond with the local time.
If you get garbage, check the protocol settings.
If you see responses but not what you type, tyrn on local echo.
If you get no reply, not even garbacge, check your cabling.
If you still get no reply, the USB-serial connection may be bad, although it should work with at least HyperTerminal.
Let me know,
Posted 04 March 2009 - 03:28 PM
I'm using a Prolific adapter, guess I'll have to start the Windows/Drivers dance and see who wins. Someone suggested that I try a Keyspan adapter, which I have on my Mac. So I downloaded the Keyspan drivers and Windows wont recognize them as the appropriate drivers. Man I wish PHD/Autostar worked with Macs.
Posted 04 March 2009 - 03:49 PM
also i think i have a prolific driver file that i can post on my website for you to download if you need (later today.) i know how frustrating this part can be - you will be up and imaging before long. i'll pm you
Posted 06 March 2009 - 07:31 AM
Thanks all for your fantastic help.
Posted 06 March 2009 - 11:00 AM
As far as the DEC calibration failing is concerned. I've had that. From what I have been able to dig up, it's due to backlash and/or poor polar alignment. I don't have enough experience to say, but there is a document (guiding.pdf)over on the 'LXD75telescopes' Yahoo group that has a strategy for good guiding with an LXD75 mount & PHD. I haven't been able to try it yet, but I can't wait!