Yes, it does matter. Set it as an AP900 or AP1200. It is dependent on the number of teeth on the worm gears and the Mach1 is the same as the 900/1200. The 400/600 have fewer. Rick. and because of

Hi, found the bolt type: It is 5/16-18 with kinda coarse thread. I would need 3 of at least 60mm to fit the bill. Thanks for any help. I looked on ebay UK, but not really a success, and from the US

Hi Anthony, You do not need to uninstall either the AP or the Full version. V2 can coexist with V1. However, if you downloaded last night please download the installation again because there was a

Hi, to mount an AP900 base plate to a meade lx200 tripod I would need 3 bolts that fit the LX200 head threaded holes. I have short ones, but due to the nature of the tripod I need to make room to

Ray, Is it still the case that we must uninstall any existing version of the software prior to loading this beta version? Anthony.

I just received my new Mach1GTO(after a 6 year wait) three days ago and because of work, soccer and Little League games am just now starting to get it set up. I'll first have to say that the

Hi Ruben, You should be able to get much closer than that. Orthogonality errors should have very little effect. -Ray Gralak Author of PEMPro

Polar alignment Sounds great! 2 questions: 1. With my polar scope on my AP mounts, I can get to within 5-10 arcmin of the pole already. How much closer will PemPro get me? 2. My scopes are not

PEMPro Version 2.0 Beta is now available for download. New features include: - Polar Alignment Wizard - Backlash Adjustment Wizard - Native Webcam

Thanks Anthony, All 5 minute subs. I have to improve my polar alignment (about 5 arcmin off) and reprogram my Pempro before I try longer exposures with the 12". Ruben almost

Ruben, Beautiful result! What kind of subs did you use? Anthony.

Hello everyone, I wanted to let you know that we are aware of our email issue. We made a change to our service last night and it did not go as smoothly as one hoped. If you are getting a bounce

Very nice! I also appreciate the no-music option. Paul Gustafson

Beautiful shot Ruben! Great colour and detail! Stuart

Dear group, Last Friday night, both seeing and transparency co-operated for almost 6 hours. http://www.stardoctor.org/M106-hush without music http://www.stardoctor.org/M106 with music (may activate

Hello, I posted this question a while ago so you might want to check for those suggestions as well. I ended up getting the Parallax rings specifically for the TOA 150 and attaching them directly to

-Neils. I think the TOA150 is 179mm diamter, so 155 rings wont fit. Parallax makes rings for TOA150. You could use those with the terrific and well priced AP 15inch ribbed plate. I think

Niels, if you do have a plate made one of the most critical aspects you'll have to remember is the "exact" alignment of the holes for the attachment of both the mount and the OTA. You want to

AP makes several plates for the 900 with a variety of bolt patterns. See their website. The AP rings for my AP155 bolt directly to the plate. If you're lucky, the Tak rings might also. If they

I want to attach my Takahashi TOA-150 refractor to my 900GTO. I could purchase an appropriate dovetail and a Losmandy saddle. However, the quick release is not important as this will be a permanent