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Equipment Discussions >> Refractors

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Ed D
Carpal Tunnel
*****

Reged: 04/30/10

Loc: Sunny South Florida
Re: Post a picture of your refractors (PART 6) new [Re: clintwhitman]
      #5885214 - 05/26/13 08:02 AM Attachment (99 downloads)

AT72ED on home-brew Alt-Az mount.

Ed D



Edited by Ed D (05/26/13 08:04 AM)


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Scott BeithAdministrator
SRF
*****

Reged: 11/26/03

Loc: Frederick, MD
Re: Post a picture of your refractors (PART 6) new [Re: Ed D]
      #5885224 - 05/26/13 08:15 AM

Nice work!

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Paul G
Post Laureate
*****

Reged: 05/08/03

Loc: Freedonia
Re: Post a picture of your refractors (PART 6) new [Re: stevew]
      #5885308 - 05/26/13 10:08 AM

Quote:

So I gotta ask, why two 130mm AP scopes?
Is one better than the other?




I've been comparing the two mono and binoviewing on the moon, planets, and deep sky, so far I've not found any difference in visual use. Not surprising I guess, given the superb interferometer reports Roland posted on the 130 EDF. My final choice is likely to come down to ergonomics. I have a very soft spot for the 130 EDF, the perfect balance between aperture and portability, and it's a little faster than the GT. The GT's ability to break down into three subunits for airline travel isn't a benefit for me, just an opportunity to get dust inside the ota, but I do like its rotatable focuser. Still haven't decided which to keep.


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NHRob
Post Laureate
*****

Reged: 08/27/04

Loc: New Hampshire
Re: Post a picture of your refractors (PART 6) new [Re: Paul G]
      #5885335 - 05/26/13 10:27 AM

Paul,

Which 130 is heavier ... the EDF or the GT?


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Paul G
Post Laureate
*****

Reged: 05/08/03

Loc: Freedonia
Re: Post a picture of your refractors (PART 6) new [Re: NHRob]
      #5885343 - 05/26/13 10:35 AM

Rob,

The GT is nearly two pounds heavier, EDF is 15 lbs, GT is a few ounces under 17 lbs.


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Mentor
professor emeritus


Reged: 09/30/10

Loc: Ontario, Canada
Re: Post a picture of your refractors (PART 6) new [Re: Ed D]
      #5885378 - 05/26/13 10:58 AM

"Home brew alt-az mount" does not do that mount justice Ed! That is superb craftsmanship, and it looks great. How smooth is the panning, and do you have any issues balancing the AT72 on it?

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ryderc1
sage
*****

Reged: 04/15/06

Re: Post a picture of your refractors (PART 6) new [Re: Paul G]
      #5885449 - 05/26/13 11:41 AM

I went through the same EDF vs. GT decision making process. I don't do any astrophotography and could find no difference in visual performance between the two scopes other than that I very slightly preferred the EDF on the Moon for some reason. I also preferred the looks and more classic styling of the EDF as well as its lighter weight. I have no need for the modular design of the GT and use an alt/az mount so the rotating focuser wasn't a factor. I sold the more pricey GT and have had absolutely no regrets.

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Mike Clemens
Frozen to Eyepiece
*****

Reged: 11/26/05

Loc: Alaska, USA
Re: Post a picture of your refractors (PART 6) new [Re: ryderc1]
      #5885684 - 05/26/13 02:17 PM

charlie... the classic CNC tubed EDF 130 and 155 are probably the smartest tube designs of all time

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ryderc1
sage
*****

Reged: 04/15/06

Re: Post a picture of your refractors (PART 6) new [Re: Mike Clemens]
      #5885724 - 05/26/13 02:52 PM

Quote:

charlie... the classic CNC tubed EDF 130 and 155 are probably the smartest tube designs of all time



I agree, Mike.


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dbowlin
sage
*****

Reged: 09/03/09

Loc: Littleton, Colorado
Re: Post a picture of your refractors (PART 6) new [Re: ryderc1]
      #5885804 - 05/26/13 03:47 PM Attachment (76 downloads)

My newest addition, WO-GTF-81, first light was last night. Thanks to Manish at Agena for getting it here as promised, great job. It was cloudy, windy etc. but I had to start sometime
Dale.


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Agatha
Pooh-Bah


Reged: 06/04/12

Loc: Coulee Region, Wisconsin
Re: Post a picture of your refractors (PART 6) new [Re: dbowlin]
      #5885825 - 05/26/13 04:09 PM

Beautiful WO scope.

And I must say that ALL of the photos of refractors are gorgeous...literally all of them.

I have to say that I am really partial to the TMB 130SS with the original focuser. I wish I had one. Hang on to that one Steve.

Best,


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BarrySimon615
Pa Bear
*****

Reged: 03/01/04

Loc: New Orleans, LA
Re: Post a picture of your refractors (PART 6) new [Re: Agatha]
      #5886691 - 05/27/13 09:02 AM Attachment (91 downloads)

Here are two of mine from 8 years ago. The larger scope is the Vernonscope Brandon 94 mm, approx. f/7 featuring an AP triplet cemented objective and Unitron tube components (objective cell and focuser). The smaller scope is a University Optics "kit" 80 mm f/6.25 achromat. It is painted with Rustoleum "Harbor Blue" which is close in color to "Brandon Blue". Note that the University Optics focuser uses identical focuser knobs to the Unitron focuser on the Brandon.

I no longer have the Brandon, but the University Optics scope is my dedicated solar scope with a Coronado 60 h-alpha filter. It is also now fitted with a FeatherTouch focuser.

Barry Simon


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clintwhitman
Caveman
*****

Reged: 01/01/07

Loc: CALI SoEasyACavemanCanSlewIt
Re: Post a picture of your refractors (PART 6) new [Re: BarrySimon615]
      #5886700 - 05/27/13 09:08 AM

Barry I never get enough of these beauties. It always makes me want to do a secret search (don't let debbie know) for brandon when you post photos of them. Kudos my friend.
(aveman


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BarrySimon615
Pa Bear
*****

Reged: 03/01/04

Loc: New Orleans, LA
Re: Post a picture of your refractors (PART 6) new [Re: BarrySimon615]
      #5886704 - 05/27/13 09:10 AM Attachment (74 downloads)

Here is the University Optics 80 as I currently use it. Set up for solar work with a Coronado 60 plus FeatherTouch focuser.

Barry Simon


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BarrySimon615
Pa Bear
*****

Reged: 03/01/04

Loc: New Orleans, LA
Re: Post a picture of your refractors (PART 6) [Re: clintwhitman]
      #5886712 - 05/27/13 09:15 AM

Quote:

Barry I never get enough of these beauties. It always makes me want to do a secret search (don't let debbie know) for brandon when you post photos of them. Kudos my friend.
(aveman




Up early on the west coast this morning, aren't you? Happy Memorial Day!

Barry


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steve-in-kville
sage


Reged: 12/24/07

Loc: Pennsylvania, USA
Re: Post a picture of your refractors (PART 6) [Re: BarrySimon615]
      #5886770 - 05/27/13 10:12 AM

Gotta love the refractor porn!! I have spent hours looking through all the older picture threads.

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Ed D
Carpal Tunnel
*****

Reged: 04/30/10

Loc: Sunny South Florida
Re: Post a picture of your refractors (PART 6) [Re: steve-in-kville]
      #5887203 - 05/27/13 02:14 PM

Scott, Ian, thanks for the compliments. The mount is garbage - I made it all from salvaged wood and hardware. I use milk jug material for the bearing/moving surfaces and designed a mechanism for the elevation that has adjustable pre-load, and the aluminum knob is a clutch mechanism to lock it in place. I have four mounting positions to balance the scope fore and aft. It works smoothly and does a nice job with either my binoviewer or single eyepieces.

Ed D


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piaras
scholastic sledgehammer


Reged: 01/26/09

Loc: Niagara Region
Re: Post a picture of your refractors (PART 6) [Re: Ed D]
      #5887334 - 05/27/13 03:40 PM Attachment (76 downloads)

My new to me Sky Watcher Black Diamond/Pro 120ED. I hope the clouds will forgive the purchase and allow me to use it tonight.
Pierre


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mlanglois
member


Reged: 12/04/09

Loc: Newton, MA
Re: Post a picture of your refractors (PART 6) [Re: piaras]
      #5887543 - 05/27/13 05:37 PM

Barry,

Did you make that solar shield on your scope or is it a commercial product?

Michael


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BarrySimon615
Pa Bear
*****

Reged: 03/01/04

Loc: New Orleans, LA
Re: Post a picture of your refractors (PART 6) [Re: mlanglois]
      #5887684 - 05/27/13 07:09 PM

Quote:

Barry,

Did you make that solar shield on your scope or is it a commercial product?

Michael




The solar shield is just a sheet of white Evergreen modeling sheet available in different thicknesses from most good hobby shops. Attached via a binocular holder mounted to a Unitron Uniclamp with camera bracket.

Here is a link:

http://www.hobbylinc.com/evergreen_model_scratch_building_plastic_supplies

Barry Simon


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