Just been fooling around with some 4mm corrugated plastic sign board. It occurred to me that if this stuff was cut across the grain into ~10mm thick strips...
Ed Jones, of Cincinnati Ohio, USA designed a 6" f/10 catadipotric Herschelian a couple of decades back. It used a diagonal right against the tube and a wedged...
WOW! Just received notification that today we have 15 NEW members! I think that's the biggest increase in one day since the early days and I attribute it to...
Just got a Yaesu VX-7. Microsoft Windows is easier to get going. ... From: Ken Hunter To: atm_free@yahoogroups.com Sent: Tuesday, December 03, 2002 3:33 PM ...
Ken and the List, Thanks for the warm welcome to the list. Yes, I came here from the ATM-List 'cause I wanted more information on the "observing side" of the...
can somone smarter than me,,,most of you,,,grin, tell me what size threads are on the 1.25 filters you buy at celestron or meade, im pritty shure there all...
Here is the url for filter threads: http://24.237.160.4/files/astronomy/ATM%20stuff/Threads.PDF Don Clement Running Springs, California Owner: Clement Focuser...
if i was to start another scope project, and i wanted to make an 6inch F-5 scope for imaging with my ccd camera, what type of glass can one use in the front of...
John, Regular "float glass" is sometimes good enough for a window for a scope. You would need to "TEST" the glass before you used it though. The test is...
sorry for the double post ,, i brain-farted and forgot to do a new header :( if i was to start another scope project, and i wanted to make an 6inch F-5 scope...
John, I too, would be interested in where to get the glass coated? I'm currently working on the design particulars for my next scope. I was thinking 10" f/5, ...
Hello All finally got some obseving weather, and what a treat(for me). First target was Saturn, looked great as always, then Jupiter, also wonderful, but i...
Hi Rick, Congrats, you found M42 the Great Orion Nebula. Punch "trapezium images" in your favorite search engine and you'll see pics of the "basket of eggs"...
That was the orion nebula M42. David ... _________________________________________________________________ MSN 8 helps eliminate e-mail viruses. Get 2 months...
I am in the fine grinding stages now. I am almost done with 25 micron as far as I can tell. The pits are getting to be few and far between, and I think I am...
For finer grits, mix one part grit to five parts water and put them in a palmolive antibacterial hand soap bottle. Shake well before squirting the slurring...
Tom, Don't re-invent the wheel, look here instead. http://www.swmanufacturing.com/sub/level_it.asp Ken Hunter ... mirror cell ... of page) ... two ... together...
Hi Dan, With regards to grit usage, check out Link 3 on my site (http://lerch.no-ip.com/atm) on this page you will see how much grit I had left over after...
So, if I make my pitch lap now, how am I supposed to finish fine grinding when the pitch covers my tool? Only kidding. I have some dental stone on order now....
Ok, I feel much better now. After examining the tests that Richard has on his site and the fact that there can be a lot of extra grit makes me very happy. now...
Dan, One more idea to throw at you. While I haven't actually fully tested this idea, I hope it will work as well as early test appear. The idea is in regards...
Have a look at www.boothman.net at the M42 picture in the images section. I think that is what you saw. The trapezium is viewed quite nicely at the higher...
It looks like there is an negative correlation between member numbers and post numbers, the more members we get, the more silent we have become! Dan...
Yes, I can see this working as well but I'd use something other than BB's in the design... some small precision balls from bearings would be smoother. I'm...
