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Messages 16976 - 17005 of 19605   Oldest  |  < Older  |  Newer >  |  Newest
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16976
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....
albireo13
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Jun 1, 2007
3:57 pm
16977
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...
buck8one2
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Jun 1, 2007
10:34 pm
16978
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...
szsherm
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Jun 2, 2007
2:44 am
16979
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...
pensack1
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Jun 2, 2007
4:21 am
16980
... 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...
Nils Olof Carlin
nilsolofcarlin
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Jun 2, 2007
4:40 pm
16981
... 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...
astronomer_c
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Jun 4, 2007
3:08 am
16982
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...
albireo13
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Jun 5, 2007
3:52 pm
16983
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)...
paleosonic
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Jun 5, 2007
5:54 pm
16984
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...
Mark Buxbaum
markbuxbaum
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Jun 5, 2007
7:52 pm
16985
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...
Alan Scott
alanne1956
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Jun 5, 2007
8:05 pm
16986
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...
tsulmer1
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Jun 5, 2007
10:49 pm
16987
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...
paleosonic
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Jun 6, 2007
12:48 am
16988
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"...
tsulmer1
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Jun 6, 2007
1:12 am
16989
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...
paleosonic
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Jun 6, 2007
2:04 am
16990
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...
Wayne Bizzaca
waynebizzaca
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Jun 6, 2007
12:24 pm
16991
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...
jhdoyle2002
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Jun 6, 2007
4:31 pm
16992
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?...
albireo13
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Jun 6, 2007
5:22 pm
16993
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...
Michelle Stone
plettstone
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Jun 6, 2007
9:06 pm
16994
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 ...
Gordon & Sherri Berry
ghb959
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Jun 6, 2007
9:17 pm
16995
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. ...
C. Starks
cstarsnc
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Jun 6, 2007
9:42 pm
16996
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...
Michelle Stone
plettstone
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Jun 7, 2007
12:40 am
16997
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...
Howard Banich
hbanich
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Jun 7, 2007
4:39 am
16998
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 ...
Michelle Stone
plettstone
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Jun 7, 2007
5:21 am
16999
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...
albireo13
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Jun 7, 2007
8:16 am
17000
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...
Howard Banich
hbanich
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Jun 7, 2007
4:58 pm
17001
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...
Michelle Stone
plettstone
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Jun 7, 2007
5:46 pm
17002
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 ...
John Mahony
jmmahony
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Jun 7, 2007
7:07 pm
17003
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...
bigdob@yahoogroups.com
Send Email
Jun 7, 2007
9:20 pm
17004
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 :...
bigdob@yahoogroups.com
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Jun 7, 2007
10:25 pm
17005
Well John I'm merciless on sloppy composition when grading papers but in the "great wide world" I'm very lenient. I guess the reason is that I know a lot of...
gnowellsct
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Jun 8, 2007
2:11 am
Messages 16976 - 17005 of 19605   Oldest  |  < Older  |  Newer >  |  Newest
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