Pier Tech pier question
Posted 28 June 2013 - 09:34 AM
Posted 30 June 2013 - 11:20 AM
I have never measured the Polar alignment error is causes, because it isn't enough to cause me problems shooting at f/2 with hyperstar.
Posted 30 June 2013 - 03:22 PM
I used a newer PT2 with my cge-pro, in a side by side setup with an HD11, and NP127is. 4 22-lb counterweights. Never appeared to have an issue.
I also have a single column PT3. These were known to have flex issues near the base on some PT3's. (See AP yahoo group) This is why Vito (pier-tech) went with a dual column. I will be using this single column PT3 with my AP1600.
Pier-tech piers are simple moving columns (google search). I won't get into the cost difference between the two (pier-tech or google. You can even get them on ebay) but I have found pier-tech's customer service to be one of the worst in the astronomy community.
Posted 30 June 2013 - 04:25 PM
. . . I have found pier-tech's customer service to be one of the worst in the astronomy community.
Yep. I'm still waiting for completion of an order for a 2 column Pier-Tech 3 that I placed in August 2012. My order included a PT3 with mounting plate, a bracket to mount the electronics to the pier, and the automated hardware and software for remote operation. My credit card was charged (overcharged, actually) for the full amount of the purchase at the time, and I was led to believe everything would ship within 6 to 8 weeks. The PT3 arrived in November, but the mounting plate that's needed to connect the PT3 to a concrete pier was accidentally left out of the box, and I had to wait several more weeks and hound Vito to send that to me separately. What's worse is I'm still waiting to receive the remote operation hardware and software, the bracket for mounting the electronics box to the pier (it's currently just lying on the floor next to the pier), and a refund on the overcharge. After much follow-up hounding by me, Vito now says the remaining items will ship this month. To the OP: if you go this route, in my experience, the Pier-Tech adjustable piers are stable and stiff, and vibrations damp out quickly. But order yours well before you expect you'll need it, try to pin them down on firm shipping dates, insist on an itemized order confirmation or other sales receipt (I've still never received one), expect shipping and communication delays and indifferent customer service, be sure to watch your credit card bill like a hawk to make sure you don't get overcharged, and be prepared to hound the owner until everything finally arrives. Wish me luck, and I'll wish you the same.
Posted 30 June 2013 - 06:53 PM
Posted 30 June 2013 - 11:26 PM
Posted 01 July 2013 - 09:08 AM
Posted 01 July 2013 - 01:20 PM
I was perm mounted so once I set the PA, that was it. I still guided though.