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Messages 19570 - 19599 of 19599   Oldest  |  < Older  |  Newer >  |  Newest
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19570
Leaning-tilting the good supported backwards is the reason we did use the flat (and the distance) Peter...
pdebaan
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Sep 28, 2009
3:21 am
19571
Well once again our host has our site down. I've not even been able to call them this time nor does THEIR website come up! Spooky stuff... so we're initiating...
garyk9rx
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Sep 29, 2009
6:24 pm
19572
Hi, I finished my article about the 14.5" F/2.55 at Okie-Tex: http://www.loptics.com/fast14p5.html Mike Lockwood Lockwood Custom Optics...
parabola30
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Sep 29, 2009
7:42 pm
19573
Awesome Mike! I can only imagine what it was like cruising the MW star clouds and dark nebulae with your scope! Did you find figuring the f/2.55 mirror to be...
Howard Banich
hbanich
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Sep 29, 2009
8:10 pm
19574
Howard, ... It was very rewarding - the thought of those views inspired me to build the telescope. I did not get as much time as I had wanted to do this, so I...
parabola30
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Sep 30, 2009
5:10 am
19575
The speaker schedule for the star party has been posted on the Chiefland Star Party Group website: www.chieflandstarpartygroup.com www.fallstarparty.com In...
Brian
bpjabber
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Sep 30, 2009
10:05 pm
19576
http://darkerview.com/darkview/index.php?/archives/1286-Segment-Exchange.html...
sbrdude86
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Oct 2, 2009
12:29 am
19577
Hello All, Unfortunately, email sent to "cs@..." is not getting through to me. In the meantime, would you please send your inquires to me ...
C. Starks
cstarsnc
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Oct 2, 2009
1:31 am
19578
Dear All, thank you to all that answered to my earlier posts. I'm now designing the cell for the 80 cm 4 cm thick f/4 mirror. I'll use a 27 points variable...
Fabio Falchi
fabio_falchi
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Oct 13, 2009
7:26 am
19579
Hi Group; I got to use a remarkable telescope last night. It was first-light test of an ultra light 20 inch telescope There is nothing exotic in its...
star-guy@...
jameyn1951
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Oct 19, 2009
2:15 pm
19580
Any idea what type of mirror cell he will use, and how many points it will have? Best, John...
john
m51john
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Oct 19, 2009
8:35 pm
19581
The mirror cell is an 18 point, plop-figured cell. The one oddity in the cell is the sheet metal sling to hold the thin edge of the mirror. Bob was going to...
star-guy@...
jameyn1951
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Oct 19, 2009
9:13 pm
19582
... And the CG is noticeably displaced (in the direction parallel to the mirror axis) from the midpoint of the mirror edge. There was an extensive thread here...
John Mahony
jmmahony
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Oct 20, 2009
4:17 pm
19583
The actual thickness of this mirror is .93 inches. Still radically thin, but not the .75 inches I said originally. Jamey ... From: star-guy@... To:...
star-guy@...
jameyn1951
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Oct 20, 2009
7:24 pm
19584
Shane et al: As per previous messages, I now have a new setup but still need help. I took the advice of a few of you and bought Carinasoft Voyager 4.5.5 with...
Roger Greenwood
astrocrumb
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Oct 24, 2009
3:22 pm
19585
Tim: I tried it real quick before I headed out to work aligning my scope with a rough esitmate for the 2 star alignment. It seems to have worked. Yea!!! Thanks...
Roger Greenwood
astrocrumb
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Oct 26, 2009
5:37 pm
19586
Greetings Big Dob group, it has been awhile since I've been here. I wonder if anyone has had an experience on mounting a Newt on a quality GEM. I have a...
gnowellsct
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Oct 26, 2009
8:54 pm
19587
Pinched mirror in cell? Rotate 90* and recheck. Bad or pinched diagonal? Replace. Chipped mirror back? Stress induced or relieved by damage, needs regrind...
starryskyn
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Oct 26, 2009
10:11 pm
19588
It seems to me from you long ramble that first you want to know if the mirror is any good. You can see that something is wrong and want to sort out if it is...
atmpob
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Oct 27, 2009
1:13 am
19589
Hi group found this link trough a Keck Engineer. http://www.repairfaq.org/sam/laserdio.htm There is some good info on green lasers here. Dave...
sbrdude86
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Oct 29, 2009
2:37 pm
19590
Green lasers make excellent teaching tools, but watch the brightness. Most lasers I've owned were "less than or equal to 5mW, the maximum legal limit not...
pensack1
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Oct 31, 2009
5:54 pm
19591
Green lasers are a great tool to expose sky conditions. Remember, you will only see the beam if there are particulates, or water vapor for the light to...
Panoscanner
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Nov 1, 2009
1:31 pm
19592
That should be true, but I can see the beam quite well in the desert in near-zero humidity. Of course, there the dust may be the reflecting medium. But I could...
pensack1
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Nov 2, 2009
1:17 am
19593
http://tinyurl.com/ylepl9p As a follow on to my post regarding a ten inch f/6 Optical Craftsmen, I'm posting this link to a "classic telescopes" thread which...
gnowellsct
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Nov 4, 2009
4:00 am
19594
Hi all. I thought you'd be interested in seeing a 23" telescope I built some components for. Turned out quite nice. Check out my webpage at: ...
Dennis
densteele
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Nov 4, 2009
8:15 pm
19595
Nice looking scope. What an odd size for a primary.... What's the assembled, ready-to-observe weight? Gordon ... From: bigdob@yahoogroups.com...
Gordon Pegue
gtpdeepsky
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Nov 4, 2009
8:41 pm
19596
Nice job! Dennis ... From: Dennis <densteele@...> Subject: [bigdob] 23" Ultra Light To: bigdob@yahoogroups.com Date: Wednesday, November 4, 2009, 3:15 PM...
Dennis Wilde
dgwilde
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Nov 5, 2009
12:06 am
19597
I'll ask the owner of the scope to weigh the components and let me know. More later.. Dennis...
Dennis
densteele
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Nov 5, 2009
7:03 pm
19598
The very thick mirror (3.85") seems to contradict your subject line. Any reason it's so thick? -John...
John
jmmahony
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Nov 6, 2009
12:07 am
19599
Yeah!! Good point. How can an "ultra light" and 60# mirror have anything in common?? <lol> My customer, Don, tells me it was a mirror from some sort of...
Dennis
densteele
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Nov 6, 2009
1:50 pm
Messages 19570 - 19599 of 19599   Oldest  |  < Older  |  Newer >  |  Newest
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