Return to the Cloudy Nights Telescope Reviews home pageAstronomics discounts for Cloudy Nights members
· Get a Cloudy Nights T-Shirt · Submit a Review / Article

Click here if you are having trouble logging into the forums

Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu… uh, User

Equipment Discussions >> ATM, Optics and DIY Forum

Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | (show all)
bremms
Carpal Tunnel
*****

Reged: 08/31/12

Loc: SC
Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: mikey cee]
      #5792249 - 04/11/13 12:18 PM

I feel left out. None of mine have handles. I just finished a 5" F5 refractor Originally designed with a Jaegers lens. I had a cemented 130mm dia Melles Griot Achro with about the same FL. Writing on the side indicated it was 10/20 scratch dig and better than 1/3 wavefront P-V. It has slightly better images than the Jaegers. The image is also brighter since it has 97.5% transmission 500-700nm and The Jaegers is uncoated and air spaced. So it ends up about 82%. Both lenses are good for an F5.
My 6" F10 is next!
Here is a link to a picture of my 5" F5 "The Stump"
http://www.cloudynights.com/ubbthreads/attachments/5789322-stump.jpg


Post Extras: Print Post   Remind Me!   Notify Moderator  
dawsonian2000
Carpal Tunnel
*****

Reged: 07/26/06

Loc: Riverview, FL, USA
Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: martym]
      #5793595 - 04/12/13 12:05 AM

Quote:

Yes, I like the idea of grab handles on a refractor. I also put one on my 6" f/15 folded refractor and my 5" f/8 refract.

marty




Grab handles are !!! When I thought about having to maneuver the GJD, it came to mind that the tube (being 7" inches in diameter) would be difficult to grasp with one hand. I think I will add some to my 4" f/13 and 5" f/9.4 too.

Mel


Post Extras: Print Post   Remind Me!   Notify Moderator  
dawsonian2000
Carpal Tunnel
*****

Reged: 07/26/06

Loc: Riverview, FL, USA
Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: neo]
      #5793601 - 04/12/13 12:08 AM

Quote:

Looking good Mel!

I almost forgot about a handle on my baby Jaegers . I have to do something about it while I still can




Get those handles, neo! You'll be glad you did!

Mel


Post Extras: Print Post   Remind Me!   Notify Moderator  
dawsonian2000
Carpal Tunnel
*****

Reged: 07/26/06

Loc: Riverview, FL, USA
Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: mikey cee]
      #5793603 - 04/12/13 12:10 AM

Quote:

Yeah Mel you gotta' have grab handles on a refractor. It's the law of the land! Mike




Hey Mikey! I even thought about a steering wheel!

Mel


Post Extras: Print Post   Remind Me!   Notify Moderator  
dawsonian2000
Carpal Tunnel
*****

Reged: 07/26/06

Loc: Riverview, FL, USA
Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: bremms]
      #5793693 - 04/12/13 01:35 AM

Quote:

I feel left out. None of mine have handles. I just finished a 5" F5 refractor Originally designed with a Jaegers lens. I had a cemented 130mm dia Melles Griot Achro with about the same FL. Writing on the side indicated it was 10/20 scratch dig and better than 1/3 wavefront P-V. It has slightly better images than the Jaegers. The image is also brighter since it has 97.5% transmission 500-700nm and The Jaegers is uncoated and air spaced. So it ends up about 82%. Both lenses are good for an F5.
My 6" F10 is next!
Here is a link to a picture of my 5" F5 "The Stump"
http://www.cloudynights.com/ubbthreads/attachments/5789322-stump.jpg




Hey Marc!

With scratch-dig and wavefront specs like those for your 130mm, handles would be the last thing I would be worried about being left out on. Do you still have this achro?

BTW - My next refractor is going to be a 6" f/5, but it is not a Jaegers achro (as far as I can tell). It is going to look much like "The Stump" in that it will also utilize the same model Astro-Physics R&P focuser. But, I am not sure as to when I am going to start the project, because I have a unique pillow-block EQ project that I will be doing after the 6" f/10 GJD refractor is done.

I look forward to seeing your 6" f/10 build! How soon will you be starting?

Mel


Post Extras: Print Post   Remind Me!   Notify Moderator  
BarabinoSr
Pooh-Bah
*****

Reged: 11/17/05

Loc: Slidell La
Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: dawsonian2000]
      #5793798 - 04/12/13 04:43 AM

Looking professional as usual Mel! Now ya got me wantin' to stick handles on my 4.5 f/10 Jaegers. I also cant wait to follow progress on the mount. Superb! Bambina

Post Extras: Print Post   Remind Me!   Notify Moderator  
dawsonian2000
Carpal Tunnel
*****

Reged: 07/26/06

Loc: Riverview, FL, USA
Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: BarabinoSr]
      #5794023 - 04/12/13 09:35 AM

Thanks G !

Speaking of Gary's EQ build, here is a link to it everyone can enjoy: Gary's Pillow-Block EQ Build Another great project indeed! Awesome job G !

Mel


Post Extras: Print Post   Remind Me!   Notify Moderator  
bremms
Carpal Tunnel
*****

Reged: 08/31/12

Loc: SC
Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: dawsonian2000]
      #5794179 - 04/12/13 10:59 AM

The Melles Griot Achro has permanent place in the stump. I do still have the Jaegers which is pretty good and has better zone correction. I'm going to sell the Jaegers lens as I seem to have collected a bunch of Achros from 80mm to 150mm. I did get a 150mm 1000mm FL with the 130mm. The 150mm is a cemented Melles Griot as well but has no specs written on the side of the lens other than FL diameter and part#. It was a lens( both were) as the largest one in the catalogs is 101mm in diameter. I may have a pic of the 150mm on my phone

Post Extras: Print Post   Remind Me!   Notify Moderator  
bremms
Carpal Tunnel
*****

Reged: 08/31/12

Loc: SC
Re: Jaegers objective [Re: roscoe]
      #5794186 - 04/12/13 11:03 AM Attachment (38 downloads)

Pic of the 150mm

Post Extras: Print Post   Remind Me!   Notify Moderator  
dawsonian2000
Carpal Tunnel
*****

Reged: 07/26/06

Loc: Riverview, FL, USA
Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: dawsonian2000]
      #5794658 - 04/12/13 02:33 PM Attachment (26 downloads)

Quote:

Once I have sanded the oak supports and seal them with marine-grade spar varnish.




I have changed my mind about painting the oak supports for the bar handles with spar varnish and decided to go with the same finish I used on the focuser back-plate and lens cell; Rustoleum's black hammered finish.

Mel


Post Extras: Print Post   Remind Me!   Notify Moderator  
martym
member
*****

Reged: 02/15/10

Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: dawsonian2000]
      #5795182 - 04/12/13 06:32 PM Attachment (33 downloads)

Hi Mel,
Speaking of pillow block EQ mounts here's a pic of one I built, but now I'm considering selling because I'm just not using it much now that I've gone to Diskmount type Alt/Az.

marty


Post Extras: Print Post   Remind Me!   Notify Moderator  
martym
member
*****

Reged: 02/15/10

Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: martym]
      #5795195 - 04/12/13 06:45 PM

I think that your decision to paint the wood handle blocks with the same black paint that matches the other OTA componets will present a nice appearance.

marty


Post Extras: Print Post   Remind Me!   Notify Moderator  
mikey cee
Postmaster
*****

Reged: 01/18/07

Loc: bellevue ne.
Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: dawsonian2000]
      #5795492 - 04/12/13 10:15 PM Attachment (22 downloads)

Quote:

Quote:

Yeah Mel you gotta' have grab handles on a refractor. It's the law of the land! Mike




Hey Mikey! I even thought about a steering wheel!

Mel


I heard someone's cage rattling when I was in the neighborhood awhile ago. Turns out it was you Mel ribbin' me about my "steering wheel". You try setting a scope of this size to your RA circle setting without it....can't be done 'cause you can't get a hold of the scope to reach the desired settings on the circle. They didn't put those things on there for looks....although it does look rather uptown if I do say so myself. I used stock pot handles for my grab handles. Got 'em at a restaurant supply house. Cheaper ones can be found in the grocery aisles too. Mike

Post Extras: Print Post   Remind Me!   Notify Moderator  
dawsonian2000
Carpal Tunnel
*****

Reged: 07/26/06

Loc: Riverview, FL, USA
Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: martym]
      #5795639 - 04/12/13 11:39 PM

Glad you approve of the black hammered finish, marty! I don't know why I didn't think of doing it in the first place. But, better late than too late.

Your pillow-block EQ is outstanding! I would give it some serious thought before selling. I bet you would truly miss it if you did. Are those Optic-Craft Machining drives on your EQ?

Mel


Post Extras: Print Post   Remind Me!   Notify Moderator  
dawsonian2000
Carpal Tunnel
*****

Reged: 07/26/06

Loc: Riverview, FL, USA
Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: mikey cee]
      #5795688 - 04/13/13 12:10 AM

Quote:

I heard someone's cage rattling when I was in the neighborhood awhile ago. Turns out it was you Mel ribbin' me about my "steering wheel".




Far be it from me to rib anyone about a steering wheel on his or her scope, Mikey! Back in the 70's the University of New Orleans had a 6" f/15 Jaegers refractor with a cool steering wheel. Gary Barabino can attest to that. But, your pot handles are quite the innovation my friend. It just so happens that my stainless steel bar handles were salvaged from an old Raytheon rack mounted computer system back in the 80's. The things we ATMs do to build our scopes.

Mel


Post Extras: Print Post   Remind Me!   Notify Moderator  
bremms
Carpal Tunnel
*****

Reged: 08/31/12

Loc: SC
Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: dawsonian2000]
      #5796068 - 04/13/13 07:15 AM

Mike, That is a nice job on your scope! Stock pot handles.... Very ingenious. Are those modded Jaegers focusers?

Post Extras: Print Post   Remind Me!   Notify Moderator  
martym
member
*****

Reged: 02/15/10

Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: bremms]
      #5796170 - 04/13/13 09:01 AM

There is a beautiful brass restored Brashear 6" refract displayed at the Smithsonian on the orginal EQ pier mount that has a circular grab handle very similar to a steering wheel. The whole instrument is a mechanical art work.

marty


Post Extras: Print Post   Remind Me!   Notify Moderator  
mikey cee
Postmaster
*****

Reged: 01/18/07

Loc: bellevue ne.
Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: bremms]
      #5796406 - 04/13/13 11:06 AM

Quote:

Mike, That is a nice job on your scope! Stock pot handles.... Very ingenious. Are those modded Jaegers focusers?


Yes they are Marc. The bigger focuser was just revamped lately to rotate at 12 click stops too. Makes it handier than undoing set screws also. Mike

Post Extras: Print Post   Remind Me!   Notify Moderator  
bremms
Carpal Tunnel
*****

Reged: 08/31/12

Loc: SC
Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: mikey cee]
      #5796713 - 04/13/13 02:29 PM

We had a nice 6" Brashear at my university that had a wheel. It was really nice to control th long tube.

Post Extras: Print Post   Remind Me!   Notify Moderator  
dawsonian2000
Carpal Tunnel
*****

Reged: 07/26/06

Loc: Riverview, FL, USA
Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: bremms]
      #5799388 - 04/14/13 08:41 PM

Quote:

... I seem to have collected a bunch of Achros from 80mm to 150mm ...




Welcome to the club. I, too, have a vast collection of Acros and APOs ranging from 50mm to 152mm. The cream of the crop being an old school 152mm f/15 Fecker APO prototype.

Mel


Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | (show all)


Extra information
4 registered and 15 anonymous users are browsing this forum.

Moderator:  ausastronomer, richard7, Starman81 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 27168

Jump to

CN Forums Home


Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics