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Equipment Discussions >> ATM, Optics and DIY Forum

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BarabinoSr
Pooh-Bah
*****

Reged: 11/17/05

Loc: Slidell La
Re: Post your home made scope new [Re: dawsonian2000]
      #5853494 - 05/11/13 10:06 AM Attachment (138 downloads)

My friend and brother Mel was gracious enough to allow me to view first light through his 10-inch f/5.6 reflector on July 14,2006.The family and I visited a year after the storm . When I arrived at Mel's the scope was still in pieces, and we put the instrument togather for the first light session with me . As you can see in the image it hadn't been finished yet cosmetically and it had no clock drive . We trained the scope on M13 and M22, two of the most splendid globular clusters in the spring and summer skies.I found that the most amazing aspect of this scope is that where ever the scope was pointed, it stayed there with no image wobble or flexure issues . Mel's fork design fit the scope perfectly and it is an example of fine workmanship and quality.

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badback
member
*****

Reged: 09/09/10

Re: Post your home made scope new [Re: droid]
      #5884712 - 05/25/13 09:55 PM Attachment (120 downloads)

My friend Manny gave this 17.5" Coulter Odyssey 2 and the Optics with it were so bad that I couldn't see anything at all except a dull black area no matter where I pointed it. Manny was going to cut it up and I said whoa there Buddy. Just give it to me and I'll sort it out.
He was right as the Optics were the worse I ever saw. As usual it turned out that the primary mirror was the culprit.
Being stubborn I tried something that seemed absurd but damn if it didn't work. Check out the two photo I've loaded.
It will show you just how easy it is to improve "missing in action" Coulter Optics without the huge cost involved with re-figuring,re-coating and shipping etc!!!
It is very self-explanatory.
Enjoy
Marv


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badback
member
*****

Reged: 09/09/10

Re: Post your home made scope new [Re: badback]
      #5884758 - 05/25/13 10:26 PM Attachment (115 downloads)

Here is a picture of the New and improved Coulter.
Marv


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badback
member
*****

Reged: 09/09/10

Re: Post your home made scope new [Re: badback]
      #5884779 - 05/25/13 10:35 PM Attachment (80 downloads)

Like I said VERY self-explanatory. YES?
Marv


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mfpalmer
journeyman


Reged: 09/03/08

Loc: Colorado, USA
Re: Post your home made scope new [Re: droid]
      #5888055 - 05/27/13 10:52 PM

Here's my 10" f5 Dob that I completed last week. First light was Friday the 25th of May. I took most of the design from Tom Clark's 'Modern Dobsonian' book. My first project and I couldn't believe it worked!

Mark


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richard7Moderator
Not Quite
*****

Reged: 11/02/07

Loc: Sacramento
Re: Post your home made scope new [Re: mfpalmer]
      #5889437 - 05/28/13 05:50 PM

Nice looking project Mark and if nobody has said so yet, welcome to C.N.

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mfpalmer
journeyman


Reged: 09/03/08

Loc: Colorado, USA
Re: Post your home made scope new [Re: richard7]
      #5889497 - 05/28/13 06:26 PM

Thanks Richard. I've been lurking for a while. I saw so many beautiful projects I finally gave in. It's not the prettiest or most innovative but I'm so thrilled with how well it performs.

Mark


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StarStuff1
Post Laureate
*****

Reged: 04/01/07

Loc: South of the Mason-Dixon Line
Re: Post your home made scope new [Re: mfpalmer]
      #5891257 - 05/29/13 08:11 PM

Good lookin' scope! You are and should be proud of your efforts and craftsmanship.

Are you planning on painting the inside of the mirror box flat black? Could be already done I guess.

Also, another welcome to CN!


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Oscar56
sage


Reged: 01/25/13

Loc: Summerland, BC
Re: Post your home made scope new [Re: mfpalmer]
      #5891293 - 05/29/13 08:37 PM

Quote:

I took most of the design from Tom Clark's 'Modern Dobsonian' book.






A couple of questions:

1. where can I find that book?
2. What was the final bill for your project?

Thanks


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starman345
Wait, I'm Thinking
*****

Reged: 07/06/10

Loc: New Brunswick, Canada
Re: Post your home made scope new [Re: Oscar56]
      #5891324 - 05/29/13 08:54 PM

Mark, that is a beautiful telescope, looks like a pro built it.

Grant, you can order the book here


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dawsonian2000
Carpal Tunnel
*****

Reged: 07/26/06

Loc: Riverview, FL, USA
Re: Post your home made scope new [Re: BarabinoSr]
      #5894088 - 05/31/13 11:32 AM

Quote:

My friend and brother Mel was gracious enough to allow me to view first light through his 10-inch f/5.6 reflector on July 14,2006.The family and I visited a year after the storm . When I arrived at Mel's the scope was still in pieces, and we put the instrument togather for the first light session with me . As you can see in the image it hadn't been finished yet cosmetically and it had no clock drive . We trained the scope on M13 and M22, two of the most splendid globular clusters in the spring and summer skies.I found that the most amazing aspect of this scope is that where ever the scope was pointed, it stayed there with no image wobble or flexure issues . Mel's fork design fit the scope perfectly and it is an example of fine workmanship and quality.




What Gary failed to tell everyone is that upon completion I named it in his honor. Gary introduced me to astronomy back in 1970 and has been an inspiration to me ever since. The scope is a wonder to behold as is Gary's passion for astronomy and helping others in this great pastime.

Thanks, my brother...

Mel


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dawsonian2000
Carpal Tunnel
*****

Reged: 07/26/06

Loc: Riverview, FL, USA
Re: Post your home made scope new [Re: mfpalmer]
      #5894098 - 05/31/13 11:36 AM

Quote:

Here's my 10" f5 Dob that I completed last week. First light was Friday the 25th of May. I took most of the design from Tom Clark's 'Modern Dobsonian' book. My first project and I couldn't believe it worked!

Mark




Truly awesome craftsmanship and beauty, Mark! Well done... well done!!! I am a worker of wood at heart also. I love what you have done with your build. Congratulations!!!

Mel


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Pinbout
Postmaster
*****

Reged: 02/22/10

Loc: nj
Re: Post your home made scope new [Re: mfpalmer]
      #5894445 - 05/31/13 02:44 PM

Quote:

Here's my 10" f5 Dob




Looks like a great scope to have and very transportable.

Did you take it for a spin in the car?


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Husbyggarn
super member


Reged: 12/12/08

Loc: Sweden
Re: Post your home made scope new [Re: badback]
      #5908372 - 06/07/13 05:01 PM

Quote:

Like I said VERY self-explanatory. YES?
Marv




So that's how you convert a scope for binoviewing!


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Dale Eason
member


Reged: 11/24/09

Loc: Roseville,Mn.
Re: Post your home made scope new [Re: Pinbout]
      #5917961 - 06/12/13 11:11 PM Attachment (90 downloads)

16 x 1 inch thick plate glass mirror I ground and figured. Light weight scope. UTA weighs about 35 lbs. Argo Navis and Servo Cat controlled. Collimation is from the front.

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Ravenous
sage


Reged: 11/14/09

Loc: UK
Re: Post your home made scope new [Re: Dale Eason]
      #5918332 - 06/13/13 08:27 AM

That's an interesting truss configuration - is it just two triangles with an additional pole going to near the focuser, or do I see part of a third triangle hidden behind the others?

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Pinbout
Postmaster
*****

Reged: 02/22/10

Loc: nj
Re: Post your home made scope new [Re: Dale Eason]
      #5918396 - 06/13/13 09:16 AM

Quote:

Collimation is from the front.






that makes all the difference in the world.


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Dale Eason
member


Reged: 11/24/09

Loc: Roseville,Mn.
Re: Post your home made scope new [Re: Ravenous]
      #5918523 - 06/13/13 10:54 AM

Quote:

That's an interesting truss configuration - is it just two triangles with an additional pole going to near the focuser, or do I see part of a third triangle hidden behind the others?




There is a third truss hiding behind the other.
Dale


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mtb54703
professor emeritus
*****

Reged: 11/12/08

Loc: Eau Claire, WI
Re: Post your home made scope new [Re: droid]
      #5918939 - 06/13/13 02:46 PM Attachment (62 downloads)

I posted this in it's own thread a couple of weeks ago so I'm sure most of you have seen it. Just thought I'd add it to the 'photo book' here.

Original thread here: 24" f/3.3

http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/5895048


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cpr1
professor emeritus
*****

Reged: 03/24/12

Loc: Louisiana
Re: Post your home made scope new [Re: mtb54703]
      #5919483 - 06/13/13 08:22 PM

Nice work Dale and Mike. Those are two scopes to be very proud of thx for posting them.

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