Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

SHOW US YOUR DOBSONIAN! ****

  • Please log in to reply
1000 replies to this topic

#976 Augustus

Augustus

    Fly Me To The Moon

  • *****
  • Posts: 10,045
  • Joined: 26 Dec 2015
  • Loc: Stamford, Connecticut

Posted 01 August 2020 - 12:00 AM

Wow, that’s about as compact as it gets!  What are the views like?

As good as any 14-incher I've ever seen. Galileo Regio on Ganymede is visible, Io transit tonight was amazing, NEOWISE was amazing. Super wide field (1.7 degrees w/21mm Ethos) is great too


  • Lewis Cason, jim kuhns, Hugh Peck and 1 other like this

#977 Sketcher

Sketcher

    Apollo

  • *****
  • Posts: 1,480
  • Joined: 29 Jun 2017
  • Loc: Under Earth's Sky

Posted 12 August 2020 - 09:15 AM

Yesterday I must have gotten somewhat bored.  I decided to take out a telescope that's been safely stored for a number of years.

 

"Splinter" is an old 10-inch Newtonian that's been built and re-built a few times.  Its last re-build was for comet-hunting (before the automated programs took over).

 

Splinter is designed to perform (and balance) with or without a 5-inch refractor mounted on it.  The idea was to sweep for comets at 30x with the 5-inch.  Then, when a suspect was encountered, I would take a quick look in the 10-inch at 100x, and more often than not, it was possible to instantly tell whether the suspect was a comet or not.  This arrangement largely eliminated the need to access charts while comet-hunting.  It also eliminated the need to swap in and out different eyepieces.

 

Splinter's altitude trunnions are off-set toward the refrator's mounting rings to better accommodate balance issues.  Note also the two racks at each end of the OTA -- for the addition of small lead weights -- for better balance in certain configurations and altitudes.

 

Note how far the solid tube extends forward of the Newtonian's eyepiece.  Splinter was designed to remain operational under rather severe dew or (more often for my area) frost conditions .  Splinter has been used even when the entire OTA was covered with a thick layer of frost.  Speaking of which -- note also the home-made (but very effective) dew-shield on the Telrad.

 

Not shown is the 50mm RACI finder that use to be mounted on the side of the OTA, between the Telrad and the Newtonian eyepiece.  That finder and its ring mount were removed for use on a different telescope.  Splinter has not been used in several years.  It went out yesterday for a photo session before being returned to it's protective storage environment.

 

Splinter August 10 2020 Sketcher
 
Splinter And Excalibur August 10 2020 Sketcher
 
So, there you have it.  Sketcher, who tends to focus almost exclusively on what can be accomplished with small refractors -- actually does have larger telescopes!  They just don't come out to play very often smile.gif

  • paul, cuzimthedad, ctcables and 17 others like this

#978 cuzimthedad

cuzimthedad

    Just Be Cuz

  • *****
  • Moderators
  • Posts: 7,313
  • Joined: 09 Apr 2006
  • Loc: Nampa, ID

Posted 12 August 2020 - 11:55 AM

 

Yesterday I must have gotten somewhat bored.  I decided to take out a telescope that's been safely stored for a number of years.

 

"Splinter" is an old 10-inch Newtonian that's been built and re-built a few times.  Its last re-build was for comet-hunting (before the automated programs took over).

 

Splinter is designed to perform (and balance) with or without a 5-inch refractor mounted on it.  The idea was to sweep for comets at 30x with the 5-inch.  Then, when a suspect was encountered, I would take a quick look in the 10-inch at 100x, and more often than not, it was possible to instantly tell whether the suspect was a comet or not.  This arrangement largely eliminated the need to access charts while comet-hunting.  It also eliminated the need to swap in and out different eyepieces.

 

Splinter's altitude trunnions are off-set toward the refrator's mounting rings to better accommodate balance issues.  Note also the two racks at each end of the OTA -- for the addition of small lead weights -- for better balance in certain configurations and altitudes.

 

Note how far the solid tube extends forward of the Newtonian's eyepiece.  Splinter was designed to remain operational under rather severe dew or (more often for my area) frost conditions .  Splinter has been used even when the entire OTA was covered with a thick layer of frost.  Speaking of which -- note also the home-made (but very effective) dew-shield on the Telrad.

 

Not shown is the 50mm RACI finder that use to be mounted on the side of the OTA, between the Telrad and the Newtonian eyepiece.  That finder and its ring mount were removed for use on a different telescope.  Splinter has not been used in several years.  It went out yesterday for a photo session before being returned to it's protective storage environment.

 

 
 
 
 
So, there you have it.  Sketcher, who tends to focus almost exclusively on what can be accomplished with small refractors -- actually does have larger telescopes!  They just don't come out to play very often smile.gif

 

Very "rustic" looking and seems to fit your location quite well!



#979 stargazer32864

stargazer32864

    Messenger

  • *****
  • Posts: 413
  • Joined: 02 Jan 2006
  • Loc: Owensboro, KY

Posted 12 August 2020 - 12:17 PM

<p>This is Betty Lou...</p>

Attached Thumbnails

  • 20200812_121652.jpg


#980 Chris Westland

Chris Westland

    Sputnik

  • -----
  • Posts: 29
  • Joined: 12 Sep 2014

Posted 21 August 2020 - 08:38 PM

HubbleOptics UL/14 f4.6.  SkyHub DSC with Bluetooth link to SkySafari 6 Pro on Samsung S4 tablet.  Bearing mods to gain control, smoothness and 'sticktion'.  In it's current form, structure performance is comparable to my Obsession Classic 20" at about 1/3rd the weight.  Optically, the mirror is great; but it's a 14".  Breaks down for easy transport in a sub-compact car.  Structure holds collimation between assemblies, and I have no complaints.

 

 

ts1a.jpg


  • cuzimthedad, mattyfatz, jim kuhns and 9 others like this

#981 cuzimthedad

cuzimthedad

    Just Be Cuz

  • *****
  • Moderators
  • Posts: 7,313
  • Joined: 09 Apr 2006
  • Loc: Nampa, ID

Posted 22 August 2020 - 06:47 PM

Hi everyone. This thread has gone through a clean up to remove posts with expired links to sites or pictures, and comments related to same so that it will be more pleasurable to scan through.


  • paul, osbourne one-nil, mattyfatz and 5 others like this

#982 TareqPhoto

TareqPhoto

    Fly Me to the Moon

  • -----
  • Posts: 5,996
  • Joined: 20 Feb 2017
  • Loc: Ajman - UAE

Posted 23 August 2020 - 11:36 AM

HubbleOptics UL/14 f4.6.  SkyHub DSC with Bluetooth link to SkySafari 6 Pro on Samsung S4 tablet.  Bearing mods to gain control, smoothness and 'sticktion'.  In it's current form, structure performance is comparable to my Obsession Classic 20" at about 1/3rd the weight.  Optically, the mirror is great; but it's a 14".  Breaks down for easy transport in a sub-compact car.  Structure holds collimation between assemblies, and I have no complaints.

 

 

ts1a.jpg

I was thinking about HO dobs before but some people have complains about it, here in this site, so i avoided, now your post sounds like a positive feedback/review about it, and i want to get also 14" exactly, the one i am planning is Skywatcher Flextube, but i can think again about this Hubble Optics if i will really have no issues for overall of the scope.


  • mattyfatz, Neptune and Chris Westland like this

#983 Darren

Darren

    Viking 1

  • -----
  • Posts: 922
  • Joined: 17 Jul 2003
  • Loc: 44N, 79W (Newmarket, Ont., Canada)

Posted 24 August 2020 - 01:18 PM

My stock 10" F/4.7 Orion XTi, Micawber.

Successor to Heep, 'umble 4.5" F/9 reflector on rickety EQ-1 mount.

Much respect to John Dobson, who opened the skies to so many.

 

Attached Thumbnails

  • Scope.PNG

  • B. Hebert, mattyfatz, Lewis Cason and 4 others like this

#984 timothystraub

timothystraub

    Lift Off

  • -----
  • Posts: 14
  • Joined: 30 Apr 2020
  • Loc: Prosser, Washington USA

Posted 30 August 2020 - 12:31 AM

I had my Orion 14" rebuilt by Dennis Steele (DobStuff) late 2018.  I did the Easy Transport Telescope Option, and Sky Commander.  

 

I could not be happier!!

 

 

 

 

Attached Thumbnails

  • IMG_0478.jpeg
  • IMG_6270.jpeg

  • cuzimthedad, ctcables, mattyfatz and 8 others like this

#985 Augustus

Augustus

    Fly Me To The Moon

  • *****
  • Posts: 10,045
  • Joined: 26 Dec 2015
  • Loc: Stamford, Connecticut

Posted 30 August 2020 - 10:35 PM

13.1" Coulter Odyssey, my new outreach scope (and soon to be only third-largest)

 

IMG_6603s.jpg


  • paul, cuzimthedad, izar187 and 11 others like this

#986 StilettosNSpace

StilettosNSpace

    Lift Off

  • **---
  • Posts: 15
  • Joined: 21 Jan 2013
  • Loc: San Diego, CA

Posted 31 August 2020 - 02:33 AM

Me and my 28 inch f/5, trademarked SkyClops. I also have a 12 inch f/5 Meade lightbridge.

http://www.stellarex...nomy-equipment/
  • mattyfatz, jim kuhns, junomike and 8 others like this

#987 Voyager 3

Voyager 3

    Messenger

  • -----
  • Posts: 437
  • Joined: 20 Jul 2020
  • Loc: Near Bangalore, India

Posted 08 September 2020 - 07:07 AM

Ohh I drool over all these BIG GUNS ... Hoping (dreaming if u won't) to get one of these AND a wide field fractor

#988 BlueTrane2028

BlueTrane2028

    Ranger 4

  • -----
  • Posts: 317
  • Joined: 25 Aug 2017
  • Loc: Bala Cynwyd, PA, USA

Posted 16 September 2020 - 10:06 AM

An homage to good telescopes gone or soon to be, and an introduction of a new arrival.
 

Celestron Starhopper 6" f/8, for sale currently.
50348923446_27f364f618_k.jpg

 

50349083032_87e4f7350b_k.jpg

 

Son checking out Jupiter
 

50348923571_21e8e5647a_h.jpg

 

 

 

Orion XT8, sold recently

50349083177_0d7d6ce61a_k.jpg

 

50348227468_4b54df75e0_k.jpg

 

 

Why sell? Well... I was planning to find a nicer 8", so the Orion left, and now that I have a nicer 8" I have ruled the 6" redundant.  It always kind of was, but I'm in a consolidation mood.  Now both of my full size dobs that I plan to keep can take 2" EPs, The set of Orion Expanse eyepieces in the pics can be kept full time with my Starblast 6 and XT4.5, or used for outreach when the virus subsides.  I will probably sell off one of the table tops too, but that's not in stone.

Speaking of the nicer 8", I haven't taken any pics since I got it home and cleaned off the external dust (always had a cap on everything so it's clean in the tube/mirror), but here's one from the ad.  I'm using my Celestron Starpointer Pro I had on the 6" on the 8".  The win of this deal is it kind of completed the set of eyepieces I wanted, as it included a 82* Explore Scientific 6.7mm and a $50 gift cert to a local astronomy store.  Pretty happy with it on all levels.  The new to me Skywatcher did well on Mars last night even with the California wildfire smoke blocking out a lot of the light.

50349082677_03929a6ff9_h.jpg

And of course, hard to not include your favorite Dob in a picture post.  Here's my son looking at Neowise if memory serves me.  I know, flash photography while doing astronomy... there were passing cars or street lights in all of these situations, so not much worse to grab a pic for the family album.

50348945816_9d47f375cb_h.jpg


Edited by BlueTrane2028, 16 September 2020 - 10:09 AM.

  • mattyfatz, Lewis Cason, sopticals and 3 others like this

#989 ALman

ALman

    Sputnik

  • -----
  • Posts: 25
  • Joined: 16 Oct 2019
  • Loc: Christchurch NZ

Posted 20 September 2020 - 11:58 PM

6 inch standing Dob. I did not build this. However I did restore it after the previous owner had left it in his shed for 20 years. New primary mirror, new focuser, laser sight. New paint. Great for outreach and easy viewing from the yard.

 

Attached Thumbnails

  • 20200921_165741.jpg

  • mattyfatz, Lewis Cason, jim kuhns and 2 others like this

#990 mfoose

mfoose

    Viking 1

  • *****
  • Posts: 750
  • Joined: 18 May 2013
  • Loc: Lancaster, PA

Posted 24 September 2020 - 10:48 AM

My ATM 10" f/6 Dob out the other night. It was a joy to build and is a joy to use. During the lockdown I was able to focus my time on the fan system. Works well, but I am still tweaking things. Currently using 3 80mm, 1 on the rear side and 2 as boundary layer scrubs. I may need a larger fan on the rear or multiple. Just hoping for some good seeing as the Mars opposition approaches. The EP in the focuser is an ES30mm 82*. 

Attached Thumbnails

  • 120063427_328253675175042_4399499064112404849_n.jpg

  • RobTeeter, cuzimthedad, mattyfatz and 11 others like this

#991 Darren Drake

Darren Drake

    Skylab

  • *****
  • Posts: 4,122
  • Joined: 09 Oct 2002
  • Loc: Chicagoland

Posted 25 September 2020 - 09:38 AM

Its not mine but my good friend John Pratte's 32 inch f.3.66 dob.  We recently spent nearly a week observing through it at a dark sky site.  It was a substitute for not having Okie Tex this year..

Attached Thumbnails

  • IMG_20200925_15407.jpg

  • RobTeeter, jouster, stargazer32864 and 18 others like this

#992 BlueTrane2028

BlueTrane2028

    Ranger 4

  • -----
  • Posts: 317
  • Joined: 25 Aug 2017
  • Loc: Bala Cynwyd, PA, USA

Posted 07 October 2020 - 12:32 AM

Mars opposition.

 

50430159836_6ffce8d0bf_o.jpg


Edited by BlueTrane2028, 07 October 2020 - 12:34 AM.

  • osbourne one-nil, mattyfatz, Lewis Cason and 3 others like this

#993 stargazer32864

stargazer32864

    Messenger

  • *****
  • Posts: 413
  • Joined: 02 Jan 2006
  • Loc: Owensboro, KY

Posted 14 October 2020 - 11:59 PM

8 inch F6
Novak mirror cell
ProtoStar secondary

It took 3 months to grind the mirror at the National Capital Astronomers mirror making workshop in DC.

 

Greg

Wow!! That is NICE!!!
 



#994 thesungazer

thesungazer

    Sungazer

  • *****
  • Posts: 1,453
  • Joined: 06 May 2003
  • Loc: 1AU

Posted 15 October 2020 - 06:11 AM

Wow!! That is NICE!!!
 

Thank you! Amazing this post is still getting replies 5 years later.

 

The scope has held up well over the years. I've done dozens of outreach events with it. Only modification has been to add a set of springs from the scope to the base to keep it stable in use.

Attached Thumbnails

  • post-560-0-61335100-1442970046.jpg
  • spring.jpg

  • cuzimthedad, jim kuhns, HellsKitchen and 7 others like this

#995 HellsKitchen

HellsKitchen

    Vanguard

  • -----
  • Posts: 2,043
  • Joined: 05 Sep 2008
  • Loc: Renmark, Australia

Posted 15 October 2020 - 06:39 AM

I'm normally a purist but that tube is so freakin cool!


Edited by HellsKitchen, 15 October 2020 - 06:42 AM.

  • thesungazer likes this

#996 TheGerman

TheGerman

    Lift Off

  • -----
  • Posts: 1
  • Joined: 02 May 2020

Posted 18 October 2020 - 09:31 AM

Hello,  i own a 12“ GSO Dobsonian with the silver tube  and this 16“ Taurus Telescopes Dobsonian f/4.5. Very nice scopes . In former times i had a green 8“ Dobsonian from Telescope Service Ransburg.

Taurus T400
 
greetings from Germany 
 
Stefan

 


  • paul, denis0007dl, Kunama and 6 others like this

#997 Eliserpens

Eliserpens

    Viking 1

  • -----
  • Posts: 516
  • Joined: 30 Jan 2020
  • Loc: Near Guelph Ontario

Posted Yesterday, 12:46 PM

Hi all - my little baby: Lockwood 12.5", Teeter Serrurier, Dob-stuff base Dob.   I bought it in the current configuration with a mounting dovetail for optional photography (of course you would have to buy one big EQ mount) but doubt it will ever go that route.  Also has 10K encoders for a push-to system but that will be years down the line.

 

Does anyone else have a Serrurier Dob?  I don't think there are many around...

 

 

Attached Thumbnails

  • Lockwood Serrurier dobE. .jpg

  • RobTeeter, cuzimthedad, jim kuhns and 7 others like this

#998 icomet

icomet

    Mariner 2

  • *****
  • Posts: 281
  • Joined: 09 Apr 2010
  • Loc: Montana

Posted Yesterday, 04:58 PM

I believe an administrator on CN has a scope OTA design like that.

 

He's from Canada.

 

Clear Skies.


  • Eliserpens likes this

#999 Eliserpens

Eliserpens

    Viking 1

  • -----
  • Posts: 516
  • Joined: 30 Jan 2020
  • Loc: Near Guelph Ontario

Posted Yesterday, 05:21 PM

I believe an administrator on CN has a scope OTA design like that.

 

He's from Canada.

 

Clear Skies.

Not anymore I would guess... ;)



#1000 icomet

icomet

    Mariner 2

  • *****
  • Posts: 281
  • Joined: 09 Apr 2010
  • Loc: Montana

Posted Yesterday, 10:23 PM

Not anymore I would guess... wink.gif

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


  • Eliserpens likes this


CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics