You're welcome. Actually it was fun guessing which features your lunar images contained. Four of the five were pretty easy to identify. One of them took me...
Hi All, Any idea why the AP GTO mounts use Aluminum gears with brass worms? The last time I built a mount I used the proper material combination which is...
In a message dated 2/1/2004 6:32:32 PM Central Standard Time, ... I have several books here on the design and theory of worm gears. Not one of them touches on...
I forgot one thing that Marj mentioned, the combo that we use is not subject to rusting. Have you ever seen what a telescope looks like that uses cast iron ...
There are books or papers available to the hardness of different metals but I would think they would not be that informative for the use of a mount.In heavy...
In a message dated 2/2/2004 11:39:05 AM Central Standard Time, ... Spur gears are not suitable for precision drives. periodic error is gone, but replaced by...
Darrell; That being said, why don't mount manufacturers use friction roller drives like Astro Works on their Centurin-18? A neighbor has one and it works...
In a message dated 2/3/2004 9:06:04 AM Central Standard Time, jmize@... ... Large friction rollers are practical. Small ones for compact mountings have ...
I am selling my 1200RP15 plate. I can't remember if it worked with with my C14 & Parallax Rings or not. I don't have the C14 or the Rings or the mount. I just...
Since gear accuracy is most important on the list, do you know of ... range that ... Also, is this gear ... the teeth? ... I'd have to think about the material...
Rowland, Where do you feel additional precision in gear sets could come from? Is the limiting factor in the machinery cutting the gears, which I presume are...
In a message dated 2/3/2004 4:38:45 PM Central Standard Time, ... Well, if I told you I would have to ... We are currently involved with a program to make more...
... I guess you could then take me off the waiting list <g> ... gears. I ... this is still ... 24 micron ... seonds is hit or ... That is a great acheivement!...
... Both PulseGuide and UltraTrack (with ACP3/Pinpoint) address this. PulseGuide works in the immediate area of the sky after measuring the drift. UltraTrack ...
I ... Wow - that would be impressive! I know what we have had to do to achieve levels of accuracy in that neighborhood (although a much larger scale - and for...
In a message dated 2/3/2004 6:47:55 PM Central Standard Time, ... I hope so too, but I certainly cannot guarantee this right now. 5 arc sec is our standard...
... arc sec is ... To tell the truth.....given my current skill level, the average seeing around home, and imaging at 2.2 arcsec/pixal (just waiting for a...
This is actually my first mosaic. Still working on technique... The s/n ratio on the bottom half wasn't even close to that recorded for the top at Bobfest....
... to ... feat - ... new ... arc sec is ... I wonder how the periodic error of a quality amateur mount, like the AP900, compares to a large equatorially...
In a message dated 2/4/2004 8:34:49 PM Central Standard Time, ... ??? Donno. However, there is a generally accepted rule that the larger the worm wheel, the...
... I read ("The Perfect Machine") that the Hale 200" scope on Palomar had a PE of 0.5 arc-seconds P2P when it was installed. It's since had plenty of run-in...
I recently completed Backlash Test 1 from the Pulse Guide Software on my 600E GTO. While the lines were perpendicular to each other, the line with the dots at...
In a message dated 2/7/2004 11:43:07 AM Central Standard Time, ... Which side was short? In order to do any interpretation you will need to identify whichj...
Dear Rolland: It is the left side. Hard to say which side depending on the orientation of the camera. May I Email the photos for test 1 and 2? Sincerely, Don...
In a message dated 2/7/2004 1:32:50 PM Central Standard Time, ... That does not help at all. What is the left side? RA, Dec? Roland Christen [Non-text portions...
Hello Guys, This is my first try with Jupiter. Any suggestions would be very welcome. http://www.christone.net/astro/jupiter/index.htm Regards, Chris ...
Thanks so much Bobby! BTW, where can we get this software? Regards, Chris ... Christopher and Vicky Go Christone Industries Manufacturer and Exporter of...
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