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

The 4" A Jaegers Hybrid Fork Mount Refractor Build

This topic has been archived. This means that you cannot reply to this topic.
127 replies to this topic

#1 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 18 June 2010 - 06:25 PM

Hi Guys!! :jump: Got a couple of parcels delivered by UPS today.One was sent by Mel and the other from the company that I bought the tube from.I'm putting togather the components for my 4" Jaegers refractor.It will be a different scope from those on the Carton 100mm thread.I'm also ordering the focuser so that when it comes I can begin the build.I'll begin building it once all of the parts are in hand. :) Gary G :cool:

#2 Vesper818

Vesper818

    Astronomess

  • *****
  • Posts: 10016
  • Joined: 21 Nov 2005

Posted 18 June 2010 - 06:38 PM

Yippy! Another project to watch. Gary, where did you get your 4" Jaegers lens from?

#3 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 18 June 2010 - 07:55 PM

Hi Carol ! I won it off of ebay almost two months ago.Looking forward to getting started! :jump: G :cool:

#4 akman1955

akman1955

    Soyuz

  • *****
  • Posts: 3947
  • Joined: 07 Sep 2009

Posted 18 June 2010 - 09:44 PM

:jump:Alright Gary, looking forward too this thread. We will be waiting for updates :jump:john e.

#5 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 19 June 2010 - 07:31 PM

Hello Guys. The packages have been opened, thus the beginning stage of the A. Jaegers telescope project so that everyone can be informed .Here again is a photo of the 4"(100mm dia.) objective. Gary G :cool:

Attached Thumbnails

  • 3874595-A%20jaegers%20Telescope%20001.jpg


#6 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 19 June 2010 - 07:54 PM

The Tubes-The telescope tube,which was purchased from a firm called Race Part Solutions ,is 4" outside diameter, 4 feet in length , and has a wall thickness of .065" aluminum,very firm and heavy. The smaller, larger tube is 18 inches long,5" in diameter , and has a wall thickness of .073" .Gary G :cool:

Attached Thumbnails

  • 3874647-A%20jaegers%20Telescope%20002.jpg


#7 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 19 June 2010 - 08:00 PM

Objective mounted on tube for fit.The cell fits perfectly on to the new tube.

Attached Thumbnails

  • 3874656-A%20jaegers%20Telescope%20006.jpg


#8 dawsonian2000

dawsonian2000

    Surveyor 1

  • *****
  • Posts: 1784
  • Joined: 26 Jul 2006

Posted 19 June 2010 - 08:10 PM

Hey Bam!

Congratulation on the acquisition of the A. Jaeger's 4" f/8.6 refractor objective and tubes. I am sure everyone visiting this thread will be anxious to see the end results of such a fine assemblage of parts. May Lord Klutz remain far from your efforts during its construction. As we both know, your next move is to procure a focuser for this bad boy. As I recommended and I am sure you would love to have, a crayford would be the ticket. I just hope a reasonably priced one will become available in the near future. It would be a sweet addition to such an optically sound instrument as this one is slated to be. :bow: :bow: :bow:

Wishing you much success, and look forward to watching as you progress in this calling.


Mel

#9 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 19 June 2010 - 08:15 PM

The next step will be the obtaining of a focuser for this instrument. I've already begun looking for the right unit for this scope and want to find one that has 2" I.D. with at least 3 to 4 inches of travel,to fit this tube inside diameter. No construction will begin until everything has been obtained, at least as far as the OTA is concerned. This will be a nice grab and go scope,one that is easy to asemble and use ,as my location presently is treed up .I will keep everyone informed as this telescope takes shape. Gary G :cool:

#10 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 31 August 2010 - 11:58 PM

Hello Everyone !I have resumed work on this project .I settled on a nice 2" focuser obtained from Meridian .It has almost 6" of travel which is essential for the varying eyepieces among my equipment and comes with the 1.25" adapter.
Has very smooth focal movement,and should serve me well once this scope is completed. I tried mounting it atop the 4" tube and it fits well. A picture of the focuser : G( :cool:)

Attached Thumbnails

  • 4019015-focuser 4 inch scope.jpg


#11 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 01 September 2010 - 12:07 AM

I made sure that the focuser fits inside the tube itself .

Attached Thumbnails

  • 4019022-focuser & tube.jpg


#12 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 01 September 2010 - 12:11 AM

The 50mm straight thru finderscope shown here attached to the focuser was sent to Mel in Riverview in exchange for the 50mm elbow model which will work great with this medium length scope.

#13 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 01 September 2010 - 12:20 AM

In the interim since I ordered Protostar flocking material to be placed inside the tube .To determine how long the tube should be to obtain a correct focus I ray traced the 4" lens which has a focal length of 34 ",and built this crude "box scope" from the packaging that the tube arrived in to give me an approximate length needed to cut the aluminum tube.

Attached Thumbnails

  • 4019033-box tube.jpg


#14 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 01 September 2010 - 12:26 AM

On 8/29/10 I proceeded to cut the tube and dewcap for this instrument . Mel sent me a great template which allowed me to make a great line around it that was very straight, just using an ordinary hacksaw . The cut went rather smoothly.

Attached Thumbnails

  • 4019039-telescope tube cut.jpg


#15 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 01 September 2010 - 12:40 AM

On 8/30/10 the cutting of both tubes was completetd an about 32 minutes .The scope tube 26 3/4 " and dew cap 6 1/2".

Attached Thumbnails

  • 4019047-refractor%20Tube%20007.jpg


#16 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 01 September 2010 - 12:44 AM

Dew Cap .

Attached Thumbnails

  • 4019050-refractor%20Tube%20005.jpg


#17 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 01 September 2010 - 12:55 AM

This evening I decided to put the not yet finished scope togather for a test run .I dont have the mount or pedestal base completed yet,that's another phase of the project. I hand held this instrument up at our finally clear skies and things are looking good .Got a great view of jupiter !!! :jump: :jump: G :cool:

Attached Thumbnails

  • 4019055-telescope.jpg


#18 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 01 September 2010 - 12:58 AM

Another pic:

Attached Thumbnails

  • 4019060-refractor.jpg


#19 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 01 September 2010 - 01:00 AM

Added the finder recieved from Mel:

Attached Thumbnails

  • 4019064-scope & Finder.jpg


#20 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 01 September 2010 - 05:48 PM

After further tests I will remove another 2.5" off the main tube to get the focal length where I wanted .The next step will be to file the tube edges after the cuts , prior to applying the flat black paint to the inside of tube . G :cool:

#21 dawsonian2000

dawsonian2000

    Surveyor 1

  • *****
  • Posts: 1784
  • Joined: 26 Jul 2006

Posted 04 September 2010 - 12:17 AM

Hey Bam!

Sorry I am just now getting to your thread, but I want to tell you how happy I am for you that you got this refractor project off the ground. Congratulations on your efforts thus far! :bow: :bow: :bow: It is looking good my friend!

Okay. ...Have you cut the tube to final length?


Mel

#22 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 04 September 2010 - 05:53 AM

Not yet,my friend,but I had totally dismantled the Edmund Mount on Wednesday removed the clock drive, scrubbed dirt from the main drive gear and worm and spread the parts out on my work table.Also the ground wire on the clock needs to be reconnected,fortunately all minor work ! Runnin'errands most of Friday plus I still need to pick up the superlube and Googone as you suggested .I can then proceed with the removal of the old goo and to clean and relubricate the Right Ascension and Declination Shafts of the Edmund mount that I may use to carry this instrument.This mount is definitely in keeping with the classic look for this telescope as opposed to the Celestar fork and the Edmund clock drive works .Will post pictures later !! Stay tuned G :cool:

Attached Thumbnails

  • 4025600-Edmund%20Mount%20001.jpg


#23 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 04 September 2010 - 08:07 PM

The picture above shows the Edmund mount dismantled for repair.Should be back up and running soon,after lubrication and painting.G :cool:

#24 BarabinoSr

BarabinoSr

    Surveyor 1

  • *****
  • topic starter
  • Posts: 1913
  • Joined: 17 Nov 2005

Posted 12 September 2010 - 06:48 AM

I still need to cut about 2.5 inches from the tube hopefully today ,so that the screw holes for the objective holder and focuser can be drilled. I bought some drill bits for that task . Also since the last post I've recieved the plastic backed sheet flocking for the tube from Protostar on 9/9/10 . :jump: Gary

#25 dawsonian2000

dawsonian2000

    Surveyor 1

  • *****
  • Posts: 1784
  • Joined: 26 Jul 2006

Posted 14 September 2010 - 12:30 AM

Hey G:cool:!

Did you get your main tube cut to size yet?


Mel


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