Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the bigdob group. File :...
17003
bigdob@yahoogroups.com
Jun 7, 2007 9:20 pm
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the bigdob group. File : /Collimation...
17002
John Mahony
jmmahony
Jun 7, 2007 7:07 pm
Yes, and that's the worst misspelling of "collimation" ("columniation" ?!?) in the left column of the mirror cell page I've ever seen. And three typos in one ...
17001
Michelle Stone
plettstone
Jun 7, 2007 5:46 pm
He needs to flesh out his website! Tell him that. It would be swell if he could put up some pricing as well. Michelle ... [Non-text portions of this message...
17000
Howard Banich
hbanich
Jun 7, 2007 4:58 pm
Hi Michelle, That's right, Nate has an option for remote collimation: http://www.aurorap.com/remcol.html I've seen it in action and it works really well, plus...
16999
albireo13
Jun 7, 2007 8:16 am
I talked with the folks at Astrosystems recently about their Telekits. They look very nice! I was always concerned about their weight, looking at them in the...
16998
Michelle Stone
plettstone
Jun 7, 2007 5:21 am
Howard, Can't you set up his cells to collimate while at the eyepiece? I think I saw him up at OSP last year. He can put motors on the cell and you can make ...
16997
Howard Banich
hbanich
Jun 7, 2007 4:39 am
Hi Rob, Nate Currier of Aurora Precision makes fabulous mirror cells: http://www.aurorap.com/index.html Howard Portland, Oregon ... [Non-text portions of this...
16996
Michelle Stone
plettstone
Jun 7, 2007 12:40 am
Another option is to get a conical mirror from RF Royce. These are the simplest mountable mirrors I've seen. The thing that's cool about the conical mirror...
16995
C. Starks
cstarsnc
Jun 6, 2007 9:42 pm
Hi Rob, Do you have Dave Kriege's book? He describes the construction of a mirror cell in it. I made mine for a 12.5" truss Dob using his information. ...
16994
Gordon & Sherri Berry
ghb959
Jun 6, 2007 9:17 pm
Hi Rob; Once you figure out what size mirror you are going to have. I can make you a 9 or 18 point cell. You can contact me at ghberry@ earthlink.net Gordon ...
16993
Michelle Stone
plettstone
Jun 6, 2007 9:06 pm
Yes, your optics are exposed. But unless you eat peanut butter sandwiches at the eyepiece, it shouldn't be a problem. Take a look at all of the pioneering...
16992
albireo13
Jun 6, 2007 5:22 pm
I'm getting lazy in my old age and am building a truss dob from components mostly. I'm curiosu as to what is a favorite commercial mirror cell that folks like?...
16991
jhdoyle2002
Jun 6, 2007 4:31 pm
I recently rebuilt my 12.5 F/6 into an Albert Highe 3 pole design and it came out very nice. You can see a picture of it on page 2 of the new ProtoStar...
16990
Wayne Bizzaca
waynebizzaca
Jun 6, 2007 12:24 pm
Mark, In regard to your concern about the optics being exposed, the mirror surface in my scope is about 30mm from the top of the mirror box. At my place in...
16989
paleosonic
Jun 6, 2007 2:04 am
Tim, Thats the Burgess Optical (BO)/TMB Planetary eyepiece. The TMB monocentric does indeed have a very narrow AFOV, though this is of little consequence with...
16988
tsulmer1
Jun 6, 2007 1:12 am
Awesome. Thanks so much! I'm a bit confused on the TMB - is that the monocentric TMB EP of www.tmboptical.com (sold by OPT and others under "APM Telescopes"...
16987
paleosonic
Jun 6, 2007 12:48 am
Tim, The BO/TMB Planetaries and Radians have the SAME specified AFOV (60*) and both are sharp essentially edge to edge. Also, both have generous eye relief...
16986
tsulmer1
Jun 5, 2007 10:49 pm
Hi Bob, Thanks for the response! I have a 9 mm Plossl with a measured field of approx. 16'. I don't find that too bad for drifting time. Barlowed, tracking...
16985
Alan Scott
alanne1956
Jun 5, 2007 8:05 pm
Simple question to a compiex problem. And, the answer isn't black and white, in my humble opinion. The "Albert Highe" design really has two attributes: 3 tube...
16984
Mark Buxbaum
markbuxbaum
Jun 5, 2007 7:52 pm
My friend posted this question in another forum. I am reposting it for him here. Any replies appreciated, Mark Does anyone have experience or factual...
16983
paleosonic
Jun 5, 2007 5:54 pm
Hi Tim, It sounds like you have recently made a major telescope upgrade and are now looking for appropriate eyepieces, especially in the high power (planetary)...
16982
albireo13
Jun 5, 2007 3:52 pm
HI Guys, Well I went both ways to cover my bases ... I ordered a 2" Blackcat cheshire, mirror template, and spotting triangles from Jim Fly. Then, I chatted...
16981
astronomer_c
Jun 4, 2007 3:08 am
... I did a lot of observing through a 317mm f/5 Dob. I had pretty good planetary results with these three: Pentax 7mm XW Pentax 5mm XW Takahashi 5mm LE My...
16980
Nils Olof Carlin
nilsolofcarlin
Jun 2, 2007 4:40 pm
... tools I have are a 1.25" Glatter holographic laser collimator and a homemade 1.25" cheshire. The Glatter has been a great tool for diagnosing alignment...
16979
pensack1
Jun 2, 2007 4:21 am
Rob, You'll need a TeleCat or TeleTube in order to properly position the secondary relative to the focuser. (You'll need a BlackCat cheshire only if you don't...
16978
szsherm
Jun 2, 2007 2:44 am
Yes, you could win a fabulous astro-prize at Shingletown Star Party 2007, which takes place from July 9-16, 30 miles east of Redding, California! You could win...
16977
buck8one2
Jun 1, 2007 10:34 pm
Rob If you have a single beam attachment to replace the holographic attachment you would only need the Blug, but I don't see why you can't use another brand of...
16976
albireo13
Jun 1, 2007 3:57 pm
I have 6" f/6 newt and a 10" f/6.4 newt in the works. The only tools I have are a 1.25" Glatter holographic laser collimator and a homemade 1.25" cheshire....
16975
Tim Nott
notttimothy
May 30, 2007 9:46 pm
Thanks Don, Your explanation is a lot more illuminating and knowledgeable than mine. I was just trying to give Jan (based on my limited knowledge) an idea why...
