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Show us your non- dob Newtonian

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#126 NC Startrekker

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Posted 17 August 2020 - 04:07 PM

What mount is that??

Look like a Stellarvue M2.



#127 Lucky 777

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Posted 18 August 2020 - 09:23 AM

My Celestron Omni XLT-150 and CG-4 mount was a Facebook marketplace find.  The guy had received it as a gift several years ago and had no clue as to what to do with it. It was in his garage with the open end facing up, with no cover.  The reflective qualities looking in reminded me of an empty Pringles can!  It was a good winter project totally disassembling and cleaning everything plus a great way to learn about how a newt works and the art of collimation.  I've added an Orion EQ motor drive which works very well.

 

150 XLT.jpg


Edited by Lucky 777, 18 August 2020 - 09:25 AM.

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#128 mikeDnight

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Posted 20 August 2020 - 05:51 PM

I bought this 8" F6 yesterday for only £150, which is probably close to the same in $. I managed first light this evening on a few stars that were peeping through the clouds, and the rings are perfectly concentric both sides of focus. The mirrors look brand new despite the scope being quite old. Can't wait to really see what it can do. I'm not really a Dob fan as I much prefer equatorially mounted scopes, so I'll probably use this scope much more than the 10" Dob. It was made by Orion Optics UK of which I'm not really a fan, but optically it seems a very nice scope so far.

 

IMG_7311.JPG


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#129 cuzimthedad

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Posted 20 August 2020 - 07:03 PM

The moderating team has decided to pin this topic for the purpose of posting pictures of your non-Dobsonian Newtonians. We cleaned the thread of expired links so if you don't see a picture of your Newtonian it was because it's link had expired. If you want to post a pic of your dob, you can do so here. Thank you and enjoy! The Reflector Forum moderating team.


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#130 cmooney91

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Posted 21 August 2020 - 02:37 PM

Here is my second hand Bresser 208m F3.9 Newt, on a diy GoTo Onstep converted Super Polaris.

gallery_280529_10874_21226.jpg
 

 

I use an ASI294 in place of an eyepiece to do real-time camera assisted observing(EAA). The camera and mount connect to a mini PC with it's own WiFi router.  I use a tablet to wirelessly view the live camera feed in comfort(no eyepiece yoga).  If the conditions get too cold or buggy I can also view and control it from my indoor desktop.

The short 2-8s exposures are very forgiving to tracking, (25lb scope on a 15lb rated mount) even an alt-az would work .  To see fainter objects live-stacking software can align and combine these short exposures on the spot to accumulate signal over time. 1-5 minutes is plenty for most things, but the view just gets better and better as you watch.  It is tons of fun, and extremely powerful. (horsehead and mag14 gx become easy to observe)

 

It's hard to beat the economic light gathering power of a fast newt.


Edited by cmooney91, 21 August 2020 - 02:55 PM.

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#131 Woj2007

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Posted 21 August 2020 - 05:18 PM

Hello everyone,

A very nice thread, thank you Moderators for pinning smile.gif

For curiosity reasons, please take a look at my first real Newts: two "yellow submarines", made in Poland back in 1993 and 1995: a 6 inch f/6 (L/13 p-v surface; reconstructed, revisited, renewed, recoated and working till now)  as well as a 10 inch f/18, advertised back then as Classical Cassegrain, but it was rather Dall-Kirkham, I think. I sold it in 2005 as it was too heavy, too slow/dark, and shaky, and never heard of it again. The mirrors were figured and polished manually though. 

 

33429DEE-DDC7-4327-97B7-F984FE56FFE8.jpeg

0AADD21C-5FA3-43CF-B30A-F4D254AB560D.jpeg


Edited by Woj2007, 21 August 2020 - 05:20 PM.

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#132 icomet

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Posted 21 August 2020 - 08:53 PM

Here is my second hand Bresser 208m F3.9 Newt, on a diy GoTo Onstep converted Super Polaris.

gallery_280529_10874_21226.jpg
 

 

I use an ASI294 in place of an eyepiece to do real-time camera assisted observing(EAA). The camera and mount connect to a mini PC with it's own WiFi router.  I use a tablet to wirelessly view the live camera feed in comfort(no eyepiece yoga).  If the conditions get too cold or buggy I can also view and control it from my indoor desktop.

The short 2-8s exposures are very forgiving to tracking, (25lb scope on a 15lb rated mount) even an alt-az would work .  To see fainter objects live-stacking software can align and combine these short exposures on the spot to accumulate signal over time. 1-5 minutes is plenty for most things, but the view just gets better and better as you watch.  It is tons of fun, and extremely powerful. (horsehead and mag14 gx become easy to observe)

 

It's hard to beat the economic light gathering power of a fast newt.

Nice choice in counter weight.

 

Clear Skies.

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  • Cave plates.jpg

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#133 CCD-Freak

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Posted 23 August 2020 - 05:37 PM

Last week I finally made it out to one of my favorite dark sites for some imaging fun so here is my prototype of the Explore Scientific 8" carbon fiber imaging Newt.  Mine is F3.8 so it is a real light bucket.  It is quite at home on the AP900GTO mount.

 

IMG_8410.JPG

 

John Love

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#134 cildarith

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Posted 30 August 2020 - 01:09 AM

Sky-Watcher 10" f4.7 Newtonian.  A recovering Dob.

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#135 Mikefp

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Posted 30 August 2020 - 09:02 AM

Re-post of my 12.5" f5 Cave.   1980 vintage.

 

 

DSC01025.JPG


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#136 RogerRZ

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Posted 30 August 2020 - 02:09 PM

Here is my very ordinary 8" F/5 newt. I use it when my excellent refractor just doesn't go deep enough.

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#137 CCD-Freak

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Posted 30 August 2020 - 03:40 PM

Here is my very ordinary 8" F/5 newt. I use it when my excellent refractor just doesn't go deep enough.

I used to have one of those Antares 8" F5 newts and I have since come to regret selling it.  If I ever happen onto another I will probably buy it.

 

8F5-Imaging Newt.JPG

 

John

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Edited by CCD-Freak, 30 August 2020 - 03:41 PM.

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#138 junomike

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Posted 30 August 2020 - 04:14 PM

SN10 w/Wilcox Rings on SW EQ5P

SN10 EQ.jpg


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#139 Ehanc

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Posted 01 September 2020 - 06:32 PM

Vixen R200SS on fork mount

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#140 osbourne one-nil

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Posted 02 September 2020 - 01:48 AM

Is there another dovetail on the opposite side of the tube and is the width of the fork arms adjustable?



#141 Ehanc

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Posted 02 September 2020 - 07:22 AM

Hi Osbourne,

 

Yes there is another dovetail on the other side - the mount is symmetrical.  The width of the fork arms are fixed but they can be set a various angles relative to horizontal .  There are simple screw type tension adjustments in both alt and az and the movements are smooth.  Balancing is accomplished by slacking off the rings and sliding the tube forward or backward as needed and rotating to achieve the desired eyepiece angle. 

 

Ed


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#142 Sporocyte

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Posted 10 September 2020 - 08:10 PM

here's my 130f5, I had to fix the primary.

130f5.jpg


That’s a survey tripod? Tell me how you did that.
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#143 CCD-Freak

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Posted 23 September 2020 - 08:18 PM

Just got this Sharp Star 150mm F2.8 Hyper Newt imaging scope.

 

Hypergraph AP900-1.JPG

 

John

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#144 Pinbout

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Posted 28 September 2020 - 06:01 PM

That’s a survey tripod? Tell me how you did that.

https://www.tigersup...I4aAtJVEALw_wcB

 

and a desert sky dsv-1 head and some v-clamp.



#145 curious_onlooker

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Posted 30 September 2020 - 09:25 AM

Sky-Watcher 10" f4.7 Newtonian.  A recovering Dob.

That's a beautiful mount, would it still be considered an equatorial platform? Or just a non-adjustable GEM? :) Is it motor-driven?


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#146 cildarith

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Posted 30 September 2020 - 11:28 AM

That's a beautiful mount, would it still be considered an equatorial platform? Or just a non-adjustable GEM? smile.gif Is it motor-driven?

Thank you!

 

That is an equatorial fork mount.  It is not an equatorial platform or German equatorial mount.  It is not currently motor-driven.

 

The design was inspired in part by the original (as far as I know) fork mount designed by Leon Foucault in the 1800's

 

https://www.research..._fig1_228660965

 

http://www.hasi.gr/s..._section_10.pdf

 

The advantages of the design include full equatorial capabilities without the need for counterweights and complete control of the zenith.  There is no "Dobson hole" making the best part of the sky difficult to maneuver through and no issues with the OTA bumping into the tripod or pier that occur when using a GEM near the zenith.

 

Cheers!


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#147 bavaricus

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Posted 02 October 2020 - 04:50 AM

This is my (now sold) equipment, Bresser NT-203/1200 on Orion Skyview Pro:

 

Bildschirmfoto_2020-10-02_11-53-01.png

It'll be replaced soon by some smaller Newton on a stronger mount ...


Edited by bavaricus, 02 October 2020 - 04:57 AM.

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#148 Jan_Fremerey

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Posted 19 October 2020 - 01:21 PM

170131_Schuessel_DSCF9254_070_g150_s_050

 

I just celebrated the 10th aniversary of my Bob Royce 10" f/5 conical mirror, see gallery.


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#149 MellonLake

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Posted 19 October 2020 - 01:56 PM

How about a Dob based non-Dob Newtonian.  I have now mounted my XT10 tube on my EQ6 (non-goto) for visual.  I also added Wilcox Rings and low friction tape to allow for tube rotation. I can also easily swap it back to the Dob mount.  I am quite happy with how stable it is.   It has worked well in the back yard on Mars and the Pleaides.  I have not had it to dark skies yet but am looking forward to getting it to my Bortle 1 and 2 sites.  I am surprised by how stable the mount is but the eyepiece does end up very high.  I will be using this for extended observations of DSOs (mostly bright galaxies) and planets. 

 

10" f/4.7 Newtonian - EQ6 (non-goto)    

 

XT10 EQ6.jpg

 


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#150 connywithay

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Posted 24 October 2020 - 11:19 AM

64C15AFA-41DC-412E-8DA8-C5F15526ACB2.jpeg

 

Just acquired this HOC 6-5 (6”, F5). I am totally new to astronomy. My kids got me a small refractor (70mm, F10) for my birthday in August and I got totally hooked. Purchased this on craigslist as the third owner. No manual, have to figure out everything myself, since Hardin Optical no longer makes telescopes. Very difficult to find anything about it on the internet. I love the challenge of figuring things out on my own and I love this scope. Learned how to find things by star hopping. Having two finderscopes (6x30 and a Telrad) is very helpful. Andromeda Galaxy was my first DSO and I squealed when I first found it lol.gif


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