Re: [Utah-astronomy] 2-Meter Mike
Why do folks have to climb a ladder to use it? Couldn't he direct the light cone to ground level? Just trying to understand. ------------------------------ On Mon, Oct 21, 2013 12:50 PM MDT Hutchings, Mat wrote:
It's simply a folded Newtonian. The secondary (flat) is 29" in diameter. That secondary is tilted so that the light cone is diverted just to the side of the telescope where a "normal" sized star diagonal then sends the light cone out at a usual angle for viewing.
Mat
-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Dion Davidson Sent: Monday, October 21, 2013 2:40 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] 2-Meter Mike
Maybe a dumb question - but what is the optical design of the scope? I have never seen a reflector with the eyepiece back down near the mirror, pointed toward the sky. ref images: http://www.ksl.com/?sid=27301024&nid=460#1 Dion
On Friday, October 18, 2013 5:21 PM, Rodger C. Fry <rcfry@comcast.net> wrote:
2-meter mike and his telescope will be featured on Channel 5 10:00 PM news tonight.
You might want to catch this.
Thanks
Rodger C. Fry
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The secondary is already 29" in diameter. To get focus closer to the ground would require an even larger secondary. It's already on the large side. It's not a magnifying secondary like a SCT, it's simply a flat. The light cone isn't altered from the primary's native f-ratio. On Mon, Oct 21, 2013 at 12:56 PM, Joe Bauman <josephmbauman@yahoo.com>wrote:
Why do folks have to climb a ladder to use it? Couldn't he direct the light cone to ground level? Just trying to understand.
Jay and Mat and some others already know about it, but I have a thread on Cloudy Nights about Mike's scope. There are several close-up shots of details if you page through the thread. http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/6146228/pag...
Chuck - Just wanted to say thanks for the CN link and pictures. Super cool I would love to go with a small group next time you're going out to see the scope. I'm in Sandy, so not too far away. Let me know. Dion On Monday, October 21, 2013 1:11 PM, Chuck Hards <chuck.hards@gmail.com> wrote: Jay and Mat and some others already know about it, but I have a thread on Cloudy Nights about Mike's scope. There are several close-up shots of details if you page through the thread. http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/6146228/pag... _______________________________________________ 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".
Chuck, as rest says, dildos. Honest, that was what the voice dictation on my iPad wrote. I meant to say, as Rush says, "dittos". (Include me in.). 73 Sent from my iPad
On Oct 22, 2013, at 11:16 AM, Dion Davidson <diondavidson@yahoo.com> wrote:
Chuck - Just wanted to say thanks for the CN link and pictures. Super cool I would love to go with a small group next time you're going out to see the scope. I'm in Sandy, so not too far away. Let me know. Dion
On Monday, October 21, 2013 1:11 PM, Chuck Hards <chuck.hards@gmail.com> wrote:
Jay and Mat and some others already know about it, but I have a thread on Cloudy Nights about Mike's scope. There are several close-up shots of details if you page through the thread.
http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/6146228/pag...
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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. You'll have to ask Mike why he didn't design the scope with a lower eyepiece. Perhaps because he didn't want to be on his knees when observing low. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Monday, October 21, 2013 2:57 PM To: utah-astronomy@mailman.xmission.com Subject: Re: [Utah-astronomy] 2-Meter Mike Why do folks have to climb a ladder to use it? Couldn't he direct the light cone to ground level? Just trying to understand. ------------------------------ On Mon, Oct 21, 2013 12:50 PM MDT Hutchings, Mat wrote:
It's simply a folded Newtonian. The secondary (flat) is 29" in diameter. That secondary is tilted so that the light cone is diverted just to the side of the telescope where a "normal" sized star diagonal then sends the light cone out at a usual angle for viewing.
Mat
-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Dion Davidson Sent: Monday, October 21, 2013 2:40 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] 2-Meter Mike
Maybe a dumb question - but what is the optical design of the scope? I have never seen a reflector with the eyepiece back down near the mirror, pointed toward the sky. ref images: http://www.ksl.com/?sid=27301024&nid=460#1 Dion
On Friday, October 18, 2013 5:21 PM, Rodger C. Fry <rcfry@comcast.net> wrote:
2-meter mike and his telescope will be featured on Channel 5 10:00 PM news tonight.
You might want to catch this.
Thanks
Rodger C. Fry
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_______________________________________________ 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
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.
Pointing it low you gain a lot of atmospheric turbulence. With the 20 inch dob, at Star Parties, I always point it low enough so you did not need a ladder, mainly because I constantly had to center the object.
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.
You'll have to ask Mike why he didn't design the scope with a lower eyepiece. Perhaps because he didn't want to be on his knees when observing low.
Mat
-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Monday, October 21, 2013 2:57 PM To: utah-astronomy@mailman.xmission.com Subject: Re: [Utah-astronomy] 2-Meter Mike
Why do folks have to climb a ladder to use it? Couldn't he direct the light cone to ground level? Just trying to understand.
------------------------------ On Mon, Oct 21, 2013 12:50 PM MDT Hutchings, Mat wrote:
It's simply a folded Newtonian. The secondary (flat) is 29" in diameter. That secondary is tilted so that the light cone is diverted just to the side of the telescope where a "normal" sized star diagonal then sends the light cone out at a usual angle for viewing.
Mat
-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Dion Davidson Sent: Monday, October 21, 2013 2:40 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] 2-Meter Mike
Maybe a dumb question - but what is the optical design of the scope? I have never seen a reflector with the eyepiece back down near the mirror, pointed toward the sky. ref images: http://www.ksl.com/?sid=27301024&nid=460#1 Dion
On Friday, October 18, 2013 5:21 PM, Rodger C. Fry <rcfry@comcast.net> wrote:
2-meter mike and his telescope will be featured on Channel 5 10:00 PM news tonight.
You might want to catch this.
Thanks
Rodger C. Fry
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participants (6)
-
Chuck Hards -
Dion Davidson -
Erik Hansen -
Hutchings, Mat -
Joe Bauman -
Larry Holmes