Re: [RCX400] Re: self/auto guiding cable
- The ST-8 should also have an 6-pin RJ11 connector.
At least, the older "parallel" model ST-8 I am using, has one (on the
connector that goes to the CFW-8).
So the connector between the two is an "RJ11-6/6 cable".
But... last night I ran into serious trouble with this autoguider port:
- as soon as I plugged in the autoguidercable from the ST8,
the scope started to move North.It didn't do that when I was working
with a Starlight Xpress SXV camera.
It stopped when a entered a value in "% Guiding Rate" (which was blank
for some strange reason).
-after some time, the Autostar software started to react strange: some
menus got lost, it wouldn't finalize a slew, ...
As soon as the autoguidercable was disconnected, the software/scope
was working fine again.
-I solved the issue by "guiding" the scope through the standard LX200
connection between the scope and PC.
This gave very good results: best I've ever seen on my scope.
Anyone else has similar experiences ?
One other thing: after an upload of new firmware into the Autostar, the
standard "%Guiding Rate" is left blank.
If left blank, does this mean the scope will not move upon a "guide" input ?
>--- In RCX400@yahoogroups.com, "marcelo_emilio" <marcelo_emilio@...>
>> Anyone knows how to make a self/auto guiding cable for the RCX400?
>>I have a SBIG ST-8XMEI CCD and would like to self guiding my RCX 400
>>16¨. What kind of connector is need? It looks like that neither RJ11
>>nor Ethernet connector works. Thanks in advance.
>It uses a 6-position, 6-pin RJ11 connector at the RCX end.
>The pinout of the RCX -socket- (you have to picture the plug
>from the rear, where the wires enter it) is shown here:
>(half-way down the page, as "Appendix B")
>and here (the first socket on the page: the "APM CCD Port"
>You should -not- have to connect the +5v lead, since the signals
>are pulled to ground to assert them.
>I have no idea what the SBIG end looks like.
>Like most computer equipment, you should not be plugging/unplugging
>But... last night I ran into serious trouble with this autoguider port:
>- as soon as I plugged in the autoguidercable from the ST8,
>the scope started to move North.It didn't do that when I was working
>with a Starlight Xpress SXV camera.
>It stopped when a entered a value in "% Guiding Rate" (which was blank
>for some strange reason).
things while they are turned on. This produces all kinds of transient
signals through the electronics. You should first turn the telescope
off before either plugging something into a port or unplugging
something. I have had similar strange behavior when a cable has come
loose during imaging runs.
Dr. D. T. Durig
Chair of the Physics Department
Director of The Cordell-Lorenz Observatory ( OBS CODE 850 )
The University Of The South
Sewanee TN 37383-1000
New area code !!! 931-598-1570
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