Too cold for the CGE?
Posted 01 March 2009 - 12:11 AM
It would NOT stop in "Switch Position." It would just keep going in circles.
During alignment, it would be WAY OFF for the first star. For the second star it might just lean over and point to the ground.
Some attempts it WOULDN'T even stop on the second star... it would just keep rotating.
All my time settings were correct. It was well balanced. My Lat/Long was correct.
It's always been pretty far off on the first star but usually tight for the second star.
It was under 10 degrees tonight so that was probably the problem.
Even my DSUSB was not registering!
Can anyone help me?
Posted 01 March 2009 - 01:52 AM
Under cold conditions most of the cables become rigid. Moreover, there is a very known issue about the cables as Celestron used the shield to send signal through the ground contact ot shielded RJ45.
I have preparate several cables. For the early versions I used an extra wire that I twisted around the original cable and solder the tips to the ground terminal of RJ45.
Later I use directly a 9 wire Serial cable, very flexible, taken from a DB9-DB9 serial cable. 8 of the wire were attached as usual in RJ45, and I solder the extra one to the ground terminal. The thing is working better, but i will use some adhesive clamps to retain the cable preventing the eventual mevement of the terminal.
Most probably I will change the RJ45 terminal for a multipin DIN.
I have not here the reference but other people change the round cable for a flat one with very good results. Search in the forum.
Posted 01 March 2009 - 09:09 AM
I'm the second owner of this CGE and with the combination of the 7degreesF and the well-used cables... No wonder I was having problems. I was in a panic that I had a bum mount.
I picked up a couple of flexible/shielded cables here.
I also liked the advice from one of the threads about moving the Dec cable to the other side of the column.
Thanks again and Carpe Noctem(unless it's too damn cold!)
Posted 01 March 2009 - 03:26 PM
I used my CGE down to -20F on several occasions without issue. I did get the flexible cables which I am certain made a difference. One cold night I pulled out the stock set and they were as rigid as metal bars.
Dan in NY
Posted 01 March 2009 - 06:42 PM
Here are some links:
Adjustable Cable Clamp, Link 1
Adjustable Cable Clamp, Link 2
Adjustable Cable Clamp, Link 3
Adjustable Cable Clamp, Link 4