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Re: [C14] Carbin Fiber tube
开云体育My understanding is not that the carbon fiber will
cool more quickly but that once it reaches equilibrium, it stays there.? In
contrast, the aluminum continues to cool throughout the night as the temperature
continues to drop.
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Re: New Images
Hi Wayne. I was using a G11. When I bought that mount for the C14 I
thought I would use the scope visual only, but then got bit by the CCD bug. The G11 worked only satisfactory and at f2.1. I did get a few shots at slighly longer focal ratios, but it was very difficult to get results since the scope is used portable with no protection from the breezes. Of course f11 was out of the question...Ken --- In C14@y..., "W. Gondella" <gondella@s...> wrote: Ken,seemed to degrade the images on the other two. You mention the AP1200 reallyimproved performance, but didn't say over what?new madeones are M13, M51, and M57. These were some quick exposures I shotwith my new AP1200 mount. Really improved performance. The M57 M51is at f11. Did it just to see how well the mount would track. and M13 are with a 3.3 reducer that gives about f4 with the C14. |
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Re: Antw: [C14] Tasco Going Under!!! What does this mean for Celestron?
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Re: [C14] Carbin Fiber tube
Kevin,
Perhaps that is it. ?I am no expert so I am speculating with my thoughts. ?However, I do not understand how the aluminum would continue to cool and the carbon fiber not? ?Won't each type of material cool to the ambient temperature of the air? ?That means both scopes should equalize at the same temp, shouldn't they? ?I don't think one (the aluminum) could become cooler than the actual temp of the air, could it? ?? Paul Atkinson |
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wheeley bar
Hi everybody !!!! I am thinking of getting a wheeley bar ( wheels for my ci 700 ); For the same reason the attachment bar also comes with a screw on leveler.? So you can balance your telescope. I know that the Ci 700 dose'nt come with leveler on each leg of the tri-pod.? I found a website with many modifications items for your Ci 700, which I saw the wheeley bar attachment for 229.99. My question to all you is which modification can i do on leveling my tri-pod.? I need help on this ! thank you all for your time and patients, GOD BLESS Here is the website Do You Yahoo!? - Official partner of 2002 FIFA World Cup |
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Re: [C14] Locking down mirror for Optec TCF-S
开云体育Hi Jim,
I don?t own the Optec TFC-S but I ordered one and I
am still waiting to receive the Optec.
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But I think you don?t need to fix the mirror with
screws. I never heard this before. I think you
have to set the rude focus with the mirror of the C14 and than set the fine
focus with the TFC. But I don?t know it for sure.
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I know many observer in the sbig usergroup own a
TFC. Perhaps you can ask your question there.
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Johannes
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Re: [C14] Locking down mirror for Optec TCF-S
Sorry to bother the C14 list again with this request, but I really, really,
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really need help on this subject. If anyone has any suggestions or recommendations. Jim -----Original Message-----
From: Jim Anderson [mailto:jim.a@...] Sent: Thursday, May 30, 2002 8:43 AM To: C14@... Subject: [C14] Locking down mirror for Optec TCF-S I have received the Optec TCF-S and as indicated in the documentation, the process for setting the focus range is to move the mirror to a get fairly good focus on the subject, lock down the mirror and then use the Optec to fine tune the subject. The screws received with the C14 are just long enough to lock down the mirror when it has been set as far back as possible (hope thats the right term to use). Has anyone had to deal with replacing the screws and what did you do/use. This is a new enterprise for me as the scope is only a couple weeks old and the focuser arrived yesterday, so I appologize if my question has not been stated correctly. Thank you Jim Anderson To unsubscribe from this group, send an email to: C14-unsubscribe@... Your use of Yahoo! Groups is subject to |
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Antw: [C14] Tasco Going Under!!! What does this mean for Celestron?
Dipl.-Ing. Johannes Huwe
Hi Paul,
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I am interested in more information. Can you send me some links about that? Thank you, Johannes. Hanover, Germany EMail: look@... Web: Am Donnerstag, 30. Mai 2002 schrieb paulatkinson22@...: Maybe this is old news to many, but Tasco is going down.? There are |
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Re: [C14] Locking down mirror for Optec TCF-S
I would not see the need to lock the mirror down. ?Why do you think you need to lock the mirror down? ?You should only have to do a rough focus with the manual knob and then fine focus with the TCF. ?By the time you get to this point mirror shift (if there is any at all) should be a mute issue as the scope is pointed at object, focused, and everything should be settled.
Paul Atkinson |
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Re: Carbin Fiber tube
apoman60612
Hi all, I myself am very sceptical that the Carbon Fiber tube will have benefits vs an Aluminum Tube on an SCT, or MCT.
If so, why hasn't someone like Roland Christen used this on his AP 10" MAK? Or Yuri from TEC? Aluminum seems to transfer heat quite well. I've been told by a few that it will not be better. Was this perhaps a marketing ploy by Celestron? Or perhaps a cost cutting measure? Mark |
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Re: [C14] New Images
W. Gondella
Ken,
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I really liked the M57 shot at f/11. Tack sharp! The 3.3 reducer seemed to degrade the images on the other two. You mention the AP1200 really improved performance, but didn't say over what? What was your previous mount you used? Wayne E. Gondella, CGA South Hills Coordinator Amateur Astronomers Association of Pittsburgh AFA Engineering Company Pittsburgh, Pennsylvania Date: Wed, 29 May 2002 20:12:54 -0000 |
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Re: [C14] Carbin Fiber tube
开云体育I
pester my dealer repeatedly to see if Celestron could deliver the my C14 in
carbon fiber (or is carbon fibre) and he indicated no such animal existed
patiently and profusely and that the aluminum would cool just a quickly or
quicker.?
?
Jim
? ----Original Message-----
From: paulatkinson22@... [mailto:paulatkinson22@...] Sent: Thursday, May 30, 2002 7:11 PM To: C14@... Subject: Re: [C14] Carbin Fiber tube Although I am sure that there are others that can expound upon "carbon fiber" ?better than I, I will venture what I have heard. ?Supposedly, the carbon fiber is lighter than aluminum and is suppose to have a better thermal quality allowing the scope to cool more quickly. ?However, what I have heard is that this really wouldn't make a difference unless you were flying your telescope at mach 3 where friction would be heating the tube to VERY high temperatures. ?Otherwise, the tube will cool off maybe a little quicker but not signifcantly faster. ?I can verify that lbs per inch it is not lighter than the Meade aluminum OTA's. ?I forget exactly and don't have the numbers right in front of me, but comparing my 12" Meade to the 11" Celestron on a per inch basis it wasn't lighter. ?I don't even know if they make the 14 in Carbon. ?Mine came in aluminum and I was never given an option. |
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Re: Tasco Going Under!!! What does this mean for Celestron?
garynburk
Hi Paul,
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If we're lucky, the senior management of Celesron will buy the Celstron assets, including the name from Tasco and succeed in running the company. This will be difficult because the high-end amateur telescope business has been very depressed for a year or so and Meade is a strong competitor. We can expect Meade to attempt to prove that the market is not strong enough to support the two companies and that if they are enjoined from buying the Celestron assets, both will go down, leaving no domestic major player. That will probably be tough to do. The fact is that Celestron and Meade are both rather small companies on their own and have little in the way of collaterial. I think that Celestron did about $110 million last year, a bit small for the FTC to fuss with but important to us. This all revolves around SCTs, since those are the only two suppliers. The refractors and Mak-Cass designs don't really count in this legal battle since there are other suppliers. If we're really unlucky, both companies will fail. Gary --- In C14@y..., "paulatkinson22" <paulatkinson22@a...> wrote:
Maybe this is old news to many, but Tasco is going down. There are |
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Carbin Fiber tube
what is carbin fiber optical tube.? Can someone tell?me?or explain how carbin fiber works on a telescope. And also have you heard anything about the CM 1400 GT, How good is this telescope. Will The CM 1400 GT have carbin fiber technology. PS / Celestron dont join the DARKSIDE( MEADE) use the forceoptics, dont sale out like tasco!!!!!!!! Do You Yahoo!? - Official partner of 2002 FIFA World Cup |
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Re: [C14] Carbin Fiber tube
Although I am sure that there are others that can expound upon "carbon fiber" ?better than I, I will venture what I have heard. ?Supposedly, the carbon fiber is lighter than aluminum and is suppose to have a better thermal quality allowing the scope to cool more quickly. ?However, what I have heard is that this really wouldn't make a difference unless you were flying your telescope at mach 3 where friction would be heating the tube to VERY high temperatures. ?Otherwise, the tube will cool off maybe a little quicker but not signifcantly faster. ?I can verify that lbs per inch it is not lighter than the Meade aluminum OTA's. ?I forget exactly and don't have the numbers right in front of me, but comparing my 12" Meade to the 11" Celestron on a per inch basis it wasn't lighter. ?I don't even know if they make the 14 in Carbon. ?Mine came in aluminum and I was never given an option.
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Tasco Going Under!!! What does this mean for Celestron?
Maybe this is old news to many, but Tasco is going down. There are
several articles, I can provide links to people, where they are done. What impact is this going to have on Celestron? In fact, in another article the FTC is stopping Meade from aquiring Celestrons assets for monopoly reasons. This isn't the same old song and dance. This is for real. Paul Atkinson |
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