In a message dated 11/1/2007 9:59:36 AM Central Daylight Time, J.Zeglinski@... writes: Does any other monthly magazine publish months in advance? For me, it's more annoying than supposedly

The Nov issue of S&T has just arrived and the "next month's contents" does not mention it. Likewise the contents list for the Dec issue of Sky &Telescope, vol 114, No 6 on the "www.skypub.com"

Hi Dean, I have the 48" port. pier that I use when I go to my ranch. My imaging scope is either my TOA 130 or the FSQ. Check out my web site. www.astrodave.com/oharra Tom O'Harra about the

Hi Joe, I come from the school of thought in astrophotography that there is no substitude for stiffness, like in auto racing there's no substitute for cubic inches. A lot of ideas for astro

Hi Don, My engineering background reminds me of these pitfalls as well, and it is a concern at the back of my mind, but I still wonder how much stiffness in this application, is really enough.

Hi Joe, I really don't think PVC pipe buried in the soil is going to be a very good pier. The ringing that you mention is a high frequency tone, that the PVC pipe wouldn't have compared to a metal

Hi All, While waiting for my new mount to get finished, I am thinking about the portable pier height. Currently mine is about 38" and the 1200 mount is 2" taller, so if I had a 36" tall AP pier it

Hi, The other benefit, I was considering, is that it can be sawn to length, with some work. However, you can do a deal with a contractor doing road work, and he will cut one evenly, to your

I went with a portable pier from Particle Wave Technologies for my Mach1GTO/TEC-140 combo, the Monolith LT with 12" extension. The LT heritage from the flagship Monolith pier is unmistakable, as is

The bending can be captured using strain guages (gages for US speakers) Would anyone be prepared to give all of this a go ? I liked the idea of the 10" concrete drain pipe - I cannot see that

You are trying to measure the motion of the pier. Use an accelerometer, not a microphone. a mic to port.

Can anyone tell me if version 4.12 of the GTO Keypad firmware is still shipping with the current Mach1GTO mount or has there been an update released? I read somewhere that it is to be updated soon.

Todd, See my answer on the ap-ug site. Larry power to

I'll be listening closely to this one as my Mach1 mount will be delivered shortly too. I just dont have the scope or camera you have so I may opt for the aluminum tripod. Todd

Larry, What are you putting you mount on? What tripod? Todd wrote: volts DC supply be

I'm trying to decide what is the best solution for portable imaging with my upcoming Mach1GTO mount. My primary imaging scope is an SV 130 F/6 refractor with STL11K. The imaging train gets rather

I question the "Petri method" as I don't think it for sure can discriminate between the bell like oscillations (which we don't care about) and the bending oscillations. (Or can it? The frequency of

Jeff: Of course Don is right, when he argues for as low mass as possible at the top of the pier. That is also the part of the pier where I would expect almost no bending to take place. For that

Joseph Zeglinski wrote: Joe, No thanks .... There are too many variables that would skew the results using a microphone not the least of which is the frequency response and how are you going to

Hi all, Just thought I'd chime in and clarify our voltage recommendations. The electronics are designed to withstand voltage supplies up to 22-24 volts as stated. However, that high a voltage