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Posts Made By: Harold Sarber

October 1, 2003 10:45 AM Forum: Equipment Talk

Auotstar on G11

Posted By Harold Sarber
I haven't seen it done, but I just picked up a dual drive kit with Autostar and I'm going to try it on my G-11. I'll have to machine an adapter for it, but that sounds like the easy part to me. Not sure it's going to have enough torque to drive the G-11, but we'll see.

Harry

October 30, 2003 10:31 PM Forum: Telescope Making

Let's try this again....

Posted By Harold Sarber
Hi Bill,

Send me an email at hfsarber 'youknowwhat' myeastern.com. I have some pieces left over from a previous project that you might be able to use.

Harry

February 15, 2004 01:21 AM Forum: Equipment Talk

Mundane Question.

Posted By Harold Sarber
McMaster Carr (www.mcmaster.com)

Harry

May 16, 2004 10:25 PM Forum: Equipment Talk

Cobble an Autostar??

Posted By Harold Sarber
Hi Robert,

You can use a 497 with DS-motors in Alt/Az mode or Polar mode. I have only used them in Alt/Az mode so far. See http://homepage.myeastern.com/~hfs/ for details.

Your best bet is to join the Yahoo Roboscope newsgroup. Great bunch of people that will be able to answer all your questions.

What do you plan to use them on?

Thanks,
Harry

September 2, 2004 01:31 PM Forum: Equipment Talk

ETX90RA mod

Posted By Harold Sarber
Hi Don,

Here's my conversion:

http://homepage.myeastern.com/~hfs/Projects/ETX70/ETX70.html

As mentioned before, there are two versions of the ETX70. I had both at one time. The one I'm using has a wider opening between the forks. The 90mm Konus just fits (barely).

Harry
p.s. The mount and scope will be on Astromart soon (probably this weekend). Too many scopes. This one has to go. So if you're looking for a base (w/497 Autostar) let me know. I'll make you an offer you can't refuse .


June 9, 2007 11:00 PM Forum: Telescope Making

14" Roboscope

Posted By Harold Sarber
Oh, I forgot to mention, because of the large gear reduction the thing is slower than molassis in winter, but the Goto is SCARY accurate. The second time I had it out I went through 19 Messier objects in 12 minutes. 8O

Harry

January 12, 2008 10:08 PM Forum: Equipment Talk

Hand Controlled Dual Axis for a Dob?

Posted By Harold Sarber
I've tried Mel Bartel's system, but it required a lot of tweaking and you also needed a laptop. I retrofitted a Meade DS mount onto my 14" truss. All the brains are in the Autostar controller. Total cost for parts was about $200. Here's a link to it:

http://homepage.ct.metrocast.net/~hfs/Projects/Robo14/robo14.htm

I bought some new 1.25" tubes a few weeks ago so that I can redo my 14" into a more lightweight scope. I'm also going to redo the GOTO setup. The altitude speed is fine, but the azymuth speed is excruciatingly slow. However, the GOTO's are extremely accurate!

I used DS motors, but motors from an LXD55 or LXD75 mount could also be used.

Harry

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