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Messages 116576 - 116605 of 136643   Oldest  |  < Older  |  Newer >  |  Newest
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116576
... Dumping product below wholesale cost may help a few people in the short run, but it really hurts the majority. I was forced to sell my 12" GS Dob for...
Geoff Gaherty
gahertyg
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Sep 1, 2005
11:25 am
116577
Morning, I had the pleasure last night of observing with a friend who had recently purchased a Burgess Binoviewer. Having never looked through a Bino-viewer I...
William Dunn
nuandromedae
Offline Send Email
Sep 1, 2005
1:54 pm
116578
... There has been lots of discussion in this forum about binoviewers over the years. A search with the SkyInSight search tool on our home page will turn up ...
Geoff Gaherty
gahertyg
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Sep 1, 2005
2:20 pm
116579
TT Policy Statement (Revised September 14, 2004) As a reminder of this group's desire to encourage all of its members to participate in a friendly and informed...
telescopes@yahoogroup...
Send Email
Sep 1, 2005
2:23 pm
116580
... i.e. you ... of focus as ... Barlow lens ... magnification. ... Geoff's answer (a small part of which is quoted above) is 100% correct. Some additional...
Gene Baraff
g2baraff
Offline Send Email
Sep 1, 2005
3:24 pm
116581
... by Celestron ... version a few ... are a smaller ... the eyepieces in ... Hi, Geoff. William Optics is also now marketing a version of this unit. The ...
John
jrcrilly
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Sep 1, 2005
4:16 pm
116582
... The little instruction sheet which comes with the Celestron version makes absolutely no mention of the need for a transfer lens in most scopes! My friend ...
Geoff Gaherty
gahertyg
Offline Send Email
Sep 1, 2005
4:22 pm
116583
http://www.cloudynights.com/item.php?item_id=1184 Enjoy, Ron B[ee]...
ronbee
ronbee77
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Sep 1, 2005
7:03 pm
116584
Folks, I have this idea but I don't know if it would really work: I really like the Orion Intelliscopes, especially the digital setting circles they come with....
David Stein
stein4444
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Sep 1, 2005
7:55 pm
116585
... Sure, although you might run into some minor issues because of small differences in focal lengths. Alternatively, you could simply send your Orion 8"...
Robert Bruce Thompson
ttgnet
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Sep 1, 2005
8:08 pm
116586
David, A couple of thoughts... 8" might not be 8". If the replacement mirror is oversize and the original a bit undersize, you may have problems. This can...
Bruce MacDonald
vorpalswordsman
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Sep 1, 2005
8:14 pm
116587
... It possibly would work. The main problem might be in the physical dimensions of the mirrors. The Orion scope, coming from "the rest of the world" has a...
Geoff Gaherty
gahertyg
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Sep 1, 2005
9:14 pm
116588
... So maybe the secondary wouldn't be in the right place? Or are there other issues? ... That sounds perfect! I had no idea he was offering such a service. ...
David Stein
stein4444
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Sep 1, 2005
9:17 pm
116589
Bruce, It's still a hypothetical 8" telescope, I haven't bought it yet. I'm just trying to figure out how to get a great telescope at a good price. I do have...
David Stein
stein4444
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Sep 1, 2005
9:29 pm
116590
Geoff, It didn't occur to me to think about metric vs english units. I can measure the Orion cell before I buy it to see if it has 3.2mm of extra room. Of...
David Stein
stein4444
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Sep 1, 2005
9:37 pm
116591
... The Guan Sheng models are metric, but Orion lists the Synta XT-8 as having a 203mm primary. -- Robert Bruce Thompson thompson@... ...
Robert Bruce Thompson
ttgnet
Offline Send Email
Sep 1, 2005
9:42 pm
116592
... I believe it was Steve who was asked by someone to refigure his GS mirror. Steve tested it and sent it back to him, saying it was really good as is! Geoff ...
Geoff Gaherty
gahertyg
Offline Send Email
Sep 1, 2005
9:44 pm
116593
[Moderators' note: This post is in violation of our non-commercial policy, but contains helpful information directly responding to several posts by our...
anttler
Online Now Send Email
Sep 1, 2005
9:50 pm
116594
... It depends where you look: I'm sure I've seen both sizes in Orion's information. Currently their web site describes the XT6i as 150mm, for example. Geoff ...
Geoff Gaherty
gahertyg
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Sep 1, 2005
9:58 pm
116595
... Just curious... The XT8i, unlike its bigger brothers, has a plate glass mirror. Is it really practical to spend a considerable sum to have a plate glass...
John Alsobrook
also_nc
Offline Send Email
Sep 1, 2005
10:04 pm
116596
... as having ... Orion's information. ... example. ... The Intelliscope instruction manual shows the XT6i as 150mm, the XT8i as 203mm and the XT10i as 254mm. ...
eddiegeer2001
Offline Send Email
Sep 1, 2005
10:05 pm
116597
... I'm pretty sure that was Gene Baraff, our SkyQuest moderator, that sent his mirror off to Swayze for testing and possible refiguring (wasn't required). ...
Jim
jim_rapideye
Offline Send Email
Sep 1, 2005
10:46 pm
116598
... would ... the ... Hi David, Welcome to the group. If I was going to go to the expense of buying a "new" premium mirror like a Royce, Swayze, Hardin (not...
John Bambury
ausastronomer
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Sep 1, 2005
10:54 pm
116599
... Steve ... less ... to ... it ... John, If you were starting from scratch you would invariably have a new premium mirror made from pyrex not plate glass,...
John Bambury
ausastronomer
Offline Send Email
Sep 1, 2005
11:04 pm
116600
For the kind of money you're prepared to spend, you can get a good ten or twelve inch Dobsonian with good optics. I got a used Discovery 10- inch F/4.5...
Taras
nuscorpii223
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Sep 1, 2005
11:15 pm
116601
i have been reading and following the thread about someone wanting to install a big mirror inthe scope, etc i was looking at my scope and it looks fairly...
briansommers777
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Sep 1, 2005
11:56 pm
116602
... Telescope mirrors are figured to incredibly fine tolerances. Cutting a figured mirror will very likely release strains in the glass and destroy the...
Geoff Gaherty
gahertyg
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Sep 2, 2005
12:05 am
116603
Please give me some advice about selecting a telescope and the best combination of eyepieces and Barlow lenses for it. This will not quite be our first...
nuttyastronomer
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Sep 2, 2005
12:09 am
116604
... Actually, the tube _is_ too heavy for the EQ-2 mount, especially if you intend to do any photography. Up here in Canada this scope is available with an...
Geoff Gaherty
gahertyg
Offline Send Email
Sep 2, 2005
12:28 am
116605
Can't speak for the eyepieces, but I have a Skywatcher 6" f/5. Skywatcher is made by Synta, as I believe are the Orions. They certainly are very close in...
Bruce MacDonald
vorpalswordsman
Offline Send Email
Sep 2, 2005
1:05 am
Messages 116576 - 116605 of 136643   Oldest  |  < Older  |  Newer >  |  Newest
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