Why is it hard to move? Is it balanced? ------------------------------ On Mon, Oct 21, 2013 1:20 PM MDT Chuck Hards wrote:
Good point, Mat, but that's pretty low with the 70", and the seeing is bound to be worse down low. I suspect this scope will get used most at mid-elevations, since it's almost impossible to move (by hand, at least), anywhere near Dobson's Hole. Only a few steps up the ladder.
On Mon, Oct 21, 2013 at 1:13 PM, Hutchings, Mat <mat.hutchings@siemens.com>wrote:
You don't have to use a ladder if it is pointed low enough, Joe. As with any alt/az telescope, there is geometry involved with how high the eyepiece height is for a given altitude that the scope is pointed.
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It is reasonably well-balanced Joe, but it weighs a ton. Takes a bit of muscle to get it going. If it wasn't balanced, it wouldn't stay where you put it. But overcoming the rest mass does take energy, and you don't have the leverage of moving it by the upper, long end of the telescope. You have to move it by the short end, a much less efficient lever. It's a bit easier at the eyepiece, where the lever is a bit longer. Things move out of the field of view FAST! On Mon, Oct 21, 2013 at 1:55 PM, Joe Bauman <josephmbauman@yahoo.com> wrote:
Why is it hard to move? Is it balanced?
How does he plan to get a ton on and off a trailer? A crane?
It is reasonably well-balanced Joe, but it weighs a ton. Takes a bit of
muscle to get it going. If it wasn't balanced, it wouldn't stay where you put it. But overcoming the rest mass does take energy, and you don't have the leverage of moving it by the upper, long end of the telescope. You have to move it by the short end, a much less efficient lever. It's a bit easier at the eyepiece, where the lever is a bit longer. Things move out of the field of view FAST!
On Mon, Oct 21, 2013 at 1:55 PM, Joe Bauman <josephmbauman@yahoo.com> wrote:
Why is it hard to move? Is it balanced?
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It's actually nearly two tons (3500 lbs.) The mirror alone is 900 lbs. Yes, Mike has in mind a type of small crane to move the telescope on and off a car transport type trailer. The scope disassembles, so the entire thing will not be moved on and off the trailer at once. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Erik Hansen Sent: Tuesday, October 22, 2013 11:39 AM To: Utah Astronomy Subject: Re: [Utah-astronomy] 2-Meter Mike
How does he plan to get a ton on and off a trailer? A crane?
It is reasonably well-balanced Joe, but it weighs a ton. Takes a bit of
muscle to get it going. If it wasn't balanced, it wouldn't stay where you put it. But overcoming the rest mass does take energy, and you don't have the leverage of moving it by the upper, long end of the telescope. You have to move it by the short end, a much less efficient lever. It's a bit easier at the eyepiece, where the lever is a bit longer. Things move out of the field of view FAST!
On Mon, Oct 21, 2013 at 1:55 PM, Joe Bauman <josephmbauman@yahoo.com> wrote:
Why is it hard to move? Is it balanced?
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The definition of a small crane may be at stake here.
It's actually nearly two tons (3500 lbs.) The mirror alone is 900 lbs.
Yes, Mike has in mind a type of small crane to move the telescope on and off a car transport type trailer.
The scope disassembles, so the entire thing will not be moved on and off the trailer at once.
Mat
-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Erik Hansen Sent: Tuesday, October 22, 2013 11:39 AM To: Utah Astronomy Subject: Re: [Utah-astronomy] 2-Meter Mike
How does he plan to get a ton on and off a trailer? A crane?
It is reasonably well-balanced Joe, but it weighs a ton. Takes a bit of
muscle to get it going. If it wasn't balanced, it wouldn't stay where you put it. But overcoming the rest mass does take energy, and you don't have the leverage of moving it by the upper, long end of the telescope. You have to move it by the short end, a much less efficient lever. It's a bit easier at the eyepiece, where the lever is a bit longer. Things move out of the field of view FAST!
On Mon, Oct 21, 2013 at 1:55 PM, Joe Bauman <josephmbauman@yahoo.com> wrote:
Why is it hard to move? Is it balanced?
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I would also think the optics should not be hauled on the trailer, should be hauled in the truck bed. Something with shock absorbers.
It's actually nearly two tons (3500 lbs.) The mirror alone is 900 lbs. Yes, Mike has in mind a type of small crane to move the telescope on and off a car transport type trailer.
The scope disassembles, so the entire thing will not be moved on and off the trailer at once.
Mat
-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Erik Hansen Sent: Tuesday, October 22, 2013 11:39 AM To: Utah Astronomy Subject: Re: [Utah-astronomy] 2-Meter Mike
How does he plan to get a ton on and off a trailer? A crane?
It is reasonably well-balanced Joe, but it weighs a ton. Takes a bit of
muscle to get it going. If it wasn't balanced, it wouldn't stay where you put it. But overcoming the rest mass does take energy, and you don't have the leverage of moving it by the upper, long end of the telescope. You have to move it by the short end, a much less efficient lever. It's a bit easier at the eyepiece, where the lever is a bit longer. Things move out of the field of view FAST!
On Mon, Oct 21, 2013 at 1:55 PM, Joe Bauman <josephmbauman@yahoo.com> wrote:
Why is it hard to move? Is it balanced?
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I'm glad Mike is the one who wants to campaign this telescope! A 70-inch telescope is incredible, but to make it transportable simply boggles the mind. If the technical hurdles of transportation can be overcome, Mike is the guy to figure it out. If not, he'll have one heckuva home observatory down in Delta. On Tue, Oct 22, 2013 at 11:37 AM, Erik Hansen <erikhansen@thebluezone.net>wrote:
I would also think the optics should not be hauled on the trailer, should be hauled in the truck bed. Something with shock absorbers.
I think you hit the nail on the head. He is going to have an incredible home observatory.
I'm glad Mike is the one who wants to campaign this telescope! A 70-inch telescope is incredible, but to make it transportable simply boggles the mind.
If the technical hurdles of transportation can be overcome, Mike is the guy to figure it out.
If not, he'll have one heckuva home observatory down in Delta.
On Tue, Oct 22, 2013 at 11:37 AM, Erik Hansen <erikhansen@thebluezone.net>wrote:
I would also think the optics should not be hauled on the trailer, should be hauled in the truck bed. Something with shock absorbers.
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I hear it is surprisingly easy to move.
Why is it hard to move? Is it balanced?
------------------------------ On Mon, Oct 21, 2013 1:20 PM MDT Chuck Hards wrote:
Good point, Mat, but that's pretty low with the 70", and the seeing is bound to be worse down low. I suspect this scope will get used most at mid-elevations, since it's almost impossible to move (by hand, at least), anywhere near Dobson's Hole. Only a few steps up the ladder.
On Mon, Oct 21, 2013 at 1:13 PM, Hutchings, Mat <mat.hutchings@siemens.com>wrote:
You don't have to use a ladder if it is pointed low enough, Joe. As with any alt/az telescope, there is geometry involved with how high the eyepiece height is for a given altitude that the scope is pointed.
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"Surprisingly easy" is relative. It does move "easily" for a ton of rest mass. It takes more than a little bit of effort to center objects in the eyepiece. On Tue, Oct 22, 2013 at 9:38 AM, Erik Hansen <erikhansen@thebluezone.net>wrote:
I hear it is surprisingly easy to move.
Why is it hard to move? Is it balanced?
Hmmm. My gmail in box isn't updated quickly as it normally does. I'm not seeing Mat's replies until after I have duplicated his answers.
No worries. Exactly the same thing has happened to me. Repeat information is not necessarily a bad thing. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Chuck Hards Sent: Tuesday, October 22, 2013 12:18 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] 2-Meter Mike Hmmm. My gmail in box isn't updated quickly as it normally does. I'm not seeing Mat's replies until after I have duplicated his answers. _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Send messages to the list to Utah-Astronomy@mailman.xmission.com The Utah-Astronomy mailing list is not affiliated with any astronomy club. To unsubscribe go to: http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Then enter your email address in the space provided and click on "Unsubscribe or edit options". This message and any attachments are solely for the use of intended recipients. The information contained herein may include trade secrets, protected health or personal information, privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you are not an intended recipient, you are hereby notified that you received this email in error, and that any review, dissemination, distribution or copying of this email and any attachment is strictly prohibited. If you have received this email in error, please contact the sender and delete the message and any attachment from your system. Thank you for your cooperation
You're more comprehensive in your replies. I tend to be as terse as the questioner at times, especially if I'm at the office. On Tue, Oct 22, 2013 at 10:25 AM, Hutchings, Mat <mat.hutchings@siemens.com>wrote:
No worries. Exactly the same thing has happened to me. Repeat information is not necessarily a bad thing.
Yeah, Chuck, you are probably on the list of the boys down by Camp Williams.....terse is good. 73 Sent from my iPad
On Oct 22, 2013, at 10:17 AM, Chuck Hards <chuck.hards@gmail.com> wrote:
Hmmm. My gmail in box isn't updated quickly as it normally does. I'm not seeing Mat's replies until after I have duplicated his answers. _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy
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I remember being circle by Cobra Helicopters out at pit and pole, trying to see what the cyndrical objects were we had set up.
They'd really be all over this if Mike had an Arabic-sounding name...
On Tue, Oct 22, 2013 at 11:27 AM, Larry Holmes <larry@kijoda.com> wrote:
Yeah, Chuck, you are probably on the list of the boys down by Camp Williams.....terse is good. 73
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My back hurts already.
"Surprisingly easy" is relative. It does move "easily" for a ton of rest
mass. It takes more than a little bit of effort to center objects in the eyepiece.
On Tue, Oct 22, 2013 at 9:38 AM, Erik Hansen <erikhansen@thebluezone.net>wrote:
I hear it is surprisingly easy to move.
Why is it hard to move? Is it balanced?
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participants (5)
-
Chuck Hards -
Erik Hansen -
Hutchings, Mat -
Joe Bauman -
Larry Holmes