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SHOW US YOUR DOBSONIAN! ****

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#1001 Eliserpens

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Posted 27 October 2020 - 04:06 AM

I was going to guess it was yours, but didn't. Saw a pic of it on a GEM, the last time.

 

Clear Skies,

Jeffrey

Montana

Good catch!  Nothing like a custom scope - it has character!



#1002 youngbill

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Posted 14 November 2020 - 07:51 PM

This is a scope I picked up a month ago for $600.  I did have to have the mirror recoated at majestic coatings.  Scope came with the scope buggy and shroud.  Don't think I got a bad deal.

Attached Thumbnails

  • DSC01361 (2).JPG

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#1003 BlueTrane2028

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Posted 24 November 2020 - 12:21 PM

I tried posting this before but it was taken down, hopefully this image is the proper size...

A boy, a telescope and Mars.  This parking lot isn't the best but the camera made it appear WAY brighter than it was.

50626316988_315eba4d68_b.jpg


Edited by BlueTrane2028, 24 November 2020 - 12:25 PM.

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#1004 wpostma

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Posted 27 November 2020 - 11:07 PM

Just posted mine over in its own thread but I'll post the image here. Glad to join the party.

 

12" Explore Scientific Truss Rod Dob 

explore-scientific-12-inch-truss-rod-dob

 

Have not yet had first light with it.  Waiting for a clear night!

 

I cut a plywood cover to go over the primary mirror because we have cats.


Edited by wpostma, 27 November 2020 - 11:08 PM.

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#1005 Chucky

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Posted 28 November 2020 - 08:54 AM

Great looking scope that Explore 12.  Wishing you many great observing sessions.



#1006 Gregrox

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Posted 30 November 2020 - 07:20 PM

j3Pf3vY.jpg

My new 10" SkyWatcher FlexTube 250P has arrived! Seen here with my Apertura DT6 and the baby, the Celestron FirstScope 76.

 

I have experience working with the 8" version of the FlexTube at the Cline Observatory, but 8" was not enough of an upgrade from the 6" (which I got as an early birthday gift once the pandemic started and I couldn't visit the observatory anymore) and the 12" would have been too big and expensive, so I got the 10" FlexTube. I wasn't expecting it to ship until at least mid December, maybe as late as Christmas, but it came earlier today and I excitedly assembled it. Sorry for the cloudy skies in North Carolina y'all. Hopefully it'll clear a bit later and I can give it a First Light.

 

from 6 to 10 inches: 1.67x the resolution. 2.78x the light gathering. 2.38x the cost. 1.58x the weight. same focal length.

 

I had forgotten how big the 8x50 RACI finder was. It is a welcome change from the 6x30 on the DT6. Need to get a 6x30 RACI for the DT6 some time.


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#1007 Sheol

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Posted 01 December 2020 - 07:06 PM

            So you have also triggered the curse. Today started out cold, but clear with a gentle breeze. I got my mirror installed in my new 12 inch Truss Dob, & the clouds have returned & gusty winds are blowing. Oh, and the rain chances are going up. I cannot take credit for bad weather in the Carolinas however. That is on you! LOL

 

      Clear Skies,

         Matt.


Edited by Sheol, 02 December 2020 - 02:20 PM.


#1008 BlueTrane2028

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Posted 02 December 2020 - 01:29 PM

j3Pf3vY.jpg

My new 10" SkyWatcher FlexTube 250P has arrived! Seen here with my Apertura DT6 and the baby, the Celestron FirstScope 76.

 

I have experience working with the 8" version of the FlexTube at the Cline Observatory, but 8" was not enough of an upgrade from the 6" (which I got as an early birthday gift once the pandemic started and I couldn't visit the observatory anymore) and the 12" would have been too big and expensive, so I got the 10" FlexTube. I wasn't expecting it to ship until at least mid December, maybe as late as Christmas, but it came earlier today and I excitedly assembled it. Sorry for the cloudy skies in North Carolina y'all. Hopefully it'll clear a bit later and I can give it a First Light.

 

from 6 to 10 inches: 1.67x the resolution. 2.78x the light gathering. 2.38x the cost. 1.58x the weight. same focal length.

 

I had forgotten how big the 8x50 RACI finder was. It is a welcome change from the 6x30 on the DT6. Need to get a 6x30 RACI for the DT6 some time.

6 and 10 is a great one-two punch.  I opted for 8 and 12, but I didn't pay 2020 money for my 12.

Finders, I've never really enjoyed a RACI by itself.  In conjuction with a Telrad? Yes.  Otherwise, if only running one finder, it's gotta be straight.  Everyone is different though.  Congrats on the new scope.

I got a new to me ST80 clone yesterday, and somehow the skies at my "dark site" (yeah the Moon kind of kills that) are set to be clear all night.  Thanks for diverting the clouds farther South.



#1009 Sheol

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Posted 02 December 2020 - 02:20 PM

             Your welcome. I think, since the Moon is full or just past. Of course, 3 great planets in the sky. Another backyard aggravation has popped up. With Christmas approaching, some houses here have strung X-mas lights around their entire houses. I may have to use a towel or jacket, maybe even a cape, just to do my First Light test. Then I guess its going to be the park behind my subdivision.

 

     Clear Skies,

      Matt.



#1010 Augustus

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Posted 06 December 2020 - 01:21 PM

My homemade 24" f/3.5

 

posingw24.jpg


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#1011 BlueTrane2028

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Posted 06 December 2020 - 02:33 PM

My homemade 24" f/3.5

 

attachicon.gifposingw24.jpg

I've seen yours on Reddit before, very cool.

Son just saw it for the first time in this thread (the kid in #1003) and exclaimed something to the effect of "how the heck do you even transport that?" in his six year old way.

So now our 12" is tiny to the kid.  Aperture fever, reignited?


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#1012 MariusR

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Posted 07 December 2020 - 03:31 AM

I recently sold my Orion XT8 and replaced it with an Orion XT 12. I have added dobsonian carry straps to save my back and will be adding a cooling fan this week. 

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  • XT12.jpg

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#1013 Oberon

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Posted 07 December 2020 - 06:12 AM

So now our 12" is tiny to the kid.  Aperture fever, reignited?

liftup.sml.gif 

You know what your mission is now Dad!



#1014 stefang

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Posted 07 December 2020 - 07:43 AM

Peter Read from SDM Telescopes has finally delivered my new mistress - AEON 25" f/2.8, and as expected, she is a stunner!

 

part-0_20201121_094643_copy_600x800.jpg part-0_20201121_102238_copy_600x800.jpg

 

4 years ago I ordered her, as Peter has a 3 year waiting list for builds. Peter Read truely is a artisan. Couldn't be happier. First light friday night was nothing short of #amazeballs.

 

Aeon is configured for both Binotron and single EP viewing.

 

#wouldntbedeadforquids. sG

 

Full gallery can be seen here including the build.

 


Edited by stefang, 07 December 2020 - 06:35 PM.

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#1015 Mike G.

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Posted 07 December 2020 - 09:00 AM

Peter Read from SDM Telescopes has finally delivered my new mistress - AEON 25" f/2.8, and as expected, she is a stunner!

 

attachicon.gifpart-0_20201121_094643_copy_600x800.jpgattachicon.gifpart-0_20201121_102238_copy_600x800.jpg

 

4 years ago I ordered her, as Peter has a 3 year waiting list for builds. Peter Read truely is a artisan. Couldn't be happier. First light friday night was nothing short of #amazeballs.

 

Aeon is configured for both Binotron and single EP viewing.

 

#wouldntbedeadforquids. sG

besides being very beautiful, the primary cell design is quite interesting.  is it using support rings rather than individual support points?


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#1016 jtsenghas

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Posted 07 December 2020 - 09:06 AM

besides being very beautiful, the primary cell design is quite interesting.  is it using support rings rather than individual support points?

Those rings appear to be just flexible rings to keep the triangles at the correct rotation angles to maintain position of mirror contact points.

 

That looks stunningly executed with timing belts for tweaking collimation.  At sub f/3, collimation is EVERYTHING.


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#1017 Mike G.

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Posted 07 December 2020 - 09:21 AM

Those rings appear to be just flexible rings to keep the triangles at the correct rotation angles to maintain position of mirror contact points.

 

That looks stunningly executed with timing belts for tweaking collimation.  At sub f/3, collimation is EVERYTHING.

thanks JT. makes sense now - they did look pretty thin.  but you are correct, stunningly executed!  whoever designed that scope is one helluva engineer!


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#1018 Eliserpens

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Posted 07 December 2020 - 09:34 AM

My homemade 24" f/3.5

 

attachicon.gifposingw24.jpg

How home made is home made?  Did you buy the parts and assemble or did you actually make the rocker box etc?  Just interested...



#1019 Eliserpens

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Posted 07 December 2020 - 09:41 AM

Peter Read from SDM Telescopes has finally delivered my new mistress - AEON 25" f/2.8, and as expected, she is a stunner!

 

attachicon.gifpart-0_20201121_094643_copy_600x800.jpgattachicon.gifpart-0_20201121_102238_copy_600x800.jpg

 

4 years ago I ordered her, as Peter has a 3 year waiting list for builds. Peter Read truely is a artisan. Couldn't be happier. First light friday night was nothing short of #amazeballs.

 

Aeon is configured for both Binotron and single EP viewing.

 

#wouldntbedeadforquids. sG

Do you have a set of EPs for this already - or a plan? Looks like you are going to require some diamond-class bling!



#1020 Augustus

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Posted 07 December 2020 - 10:44 AM

How home made is home made? Did you buy the parts and assemble or did you actually make the rocker box etc? Just interested...


There’s an entire thread in my signature. I welded the mirror cell myself, built the mirror box and rocker, and did the structural design among other things
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#1021 Augustus

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Posted 07 December 2020 - 11:36 AM

Peter Read from SDM Telescopes has finally delivered my new mistress - AEON 25" f/2.8, and as expected, she is a stunner!

 

attachicon.gifpart-0_20201121_094643_copy_600x800.jpgattachicon.gifpart-0_20201121_102238_copy_600x800.jpg

 

4 years ago I ordered her, as Peter has a 3 year waiting list for builds. Peter Read truely is a artisan. Couldn't be happier. First light friday night was nothing short of #amazeballs.

 

Aeon is configured for both Binotron and single EP viewing.

 

#wouldntbedeadforquids. sG

Who made the mirror? Hubble Optics?


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#1022 stefang

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Posted 07 December 2020 - 03:30 PM

Peter hand-makes the entire scope. You can see his handiwork here.

 

From the mirror cell, rockerbox, electronics the works.

 

www.sdmtelescopes.com.au/


Edited by stefang, 07 December 2020 - 03:30 PM.

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#1023 stefang

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Posted 07 December 2020 - 03:31 PM

Do you have a set of EPs for this already - or a plan? Looks like you are going to require some diamond-class bling!

I have a full set of Ethos's, and for binoviewing I have pairs of 

14mm Dokters

24mm panoptics and with the earthwin filterslide / power slide I can halve or double my magnification on each.

 

I don't think I can fit 2 X 41mm panoptics in my Denk bino though. Sadface.

 

 

 

 

 


Edited by stefang, 07 December 2020 - 09:47 PM.

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#1024 a__l

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Posted 08 December 2020 - 12:55 AM

Curious finder mount. This is something new in SDM. Very similar to mine, which I posted a few years ago.



#1025 Kunama

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Posted 08 December 2020 - 01:04 AM

 

Peter Read from SDM Telescopes has finally delivered my new mistress - AEON 25" f/2.8, and as expected, she is a stunner!

 

...

 

Beautiful result Stefan,  not only is Pete a master of his craft but a gentleman as well !!  I have been lucky to view through many of his creations, they are simply superbly crafted scopes !!!


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