Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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Hello all, I have a telescope given to me by a friend. It was his father's before he passed away awhile ago, who was doing a refurbish on it. It doesn't have any tags on it so I don't know what make it is, but I am told it is from the 60's. It came with a wood tripod, eyepieces, complete mount, and it all is in a wooden box. The father has refurbished the tube and mount but looks like along the way the objective got damaged. It looks like the back lens has been fractured all around the outside like it was damaged when someone took it apart. I would hate to see this end up in the trash just because of this damage. Can anyone tell me where I could find another one? The outer edge of the objective housing is labeled '90mm X 1200mm' so I assume this is what I need. Any help would be greatly appreciated.
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Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
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strdst
scholastic sledgehammer
Reged: 03/23/08
Posts: 834
Loc: Oregon USA
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Welcome Ham, to the classics ward of cloudy nights institution. I saw 90mm, refractor, and 1960's and immediately thought this was going to turn out to be another fabulous Sears 90 X 1400 (f/15.5) unearthed before our eyes, but I see yours has a focal length of 1200mm (f/13.3). Now I'm thinking yours is a fabulous different scope from the '60's. Is the tube white or another color, and will you post some photos of it? Someone here may recognize your scope.
Clamshell chips around the objective element may not be fatal. Before you buy a new objective you might want to try masking the edges or take a sharpie pen to the chips. Depending on how deeply they encroach toward the center of the glass, you may find this telescope can produce fine images even with the damage. Maybe better than new glass. Before you remove the objective, make sure you know what you're doing (keeping the lenses oriented, cleaning w/o scratching the glass).
Winding up in the trash!?! !! No No No!
Could it read 80 X 1200?
Sheesh! Wind up in the trash! Nurse, I need something to help me sleep! 
other Keith
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Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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I wouldn't really trash it, but I do know people that probably would.. Anyway here is a picture in the box.
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Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
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Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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And here is a picture of the objective lens..
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Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
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mikey cee
Post Laureate
Reged: 01/18/07
Posts: 3531
Loc: bellevue ne.
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Well that looks like a Selsi. Anyways that objective is beyond hope. I couldn't do a job that good on purpose. Even if I loosened up the retaining ring and kept dropping it over and over on a carpeted floor from a sitting position about a couple dozen times.   Mike
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7x35 and 10x50 sears tower binocs, 3" f/10 edmunds reflector, 2.4" f/11.7 manon refractor, 6" f/8 jaegers refractor, "The 8 Ball" 8" f/13.3 brandt refractor, 3" f/15.8 sans&streiffe refractor, 3.1" f/15 selsi refractor(towa 339), 2.4" f/15 sears refractor, selsi 30x30mm spyglass, criterion 5-draw 25x45x75x spyglass(1957), 4.25" f/14.8 tasco 20te.
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JamesE
Pooh-Bah
Reged: 10/22/07
Posts: 1117
Loc: Westbank, BC, Canada
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That lens wasn't in Prestons hands was it?
You know he's been known to do that on occasion. Preston Cleaning Glass
I would have to agree with Keith, does the label possibly read 80x1200. The 90X1200 would be a rare focal length.
Post some more pics.
Cheers,
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James
(Thanks to Attilla for the Clear Sky charts)
Current Projects : Tasco 15TEA - 3 inch pier mounted planetary scope
Priorities : Wife, Kids
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Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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Well I am glad someone around here can read whats on the objective. You folks are correct and it is 80X1200. Hopefully that will make it easier to find a replacement..Also knowing the person I doubt he was the one to cause the problem. He probably got it that way and didn't get that far on the restoration. 
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Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
Edited by Ham Radio (09/19/09 12:27 PM)
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strdst
scholastic sledgehammer
Reged: 03/23/08
Posts: 834
Loc: Oregon USA
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Wow, MEGA clamshell chips!!! Forget the sharpie. It's not so bad though, there is a clear edge at 2:00 and another at 5:00. I agree with James that this looks like Preston's Silver Hammer has been at play again! 
I agree with Mike that this scope appears to be like the 80 X 1200 SELSI or 80 X 1200 ATCO recently displayed here in the classics forum. I believe your formerly fantastic objective was made by HOC (Hino Optical). The build of the rest of the telescope if Hino, is excellent. Can you describe or photograph the shape of the wood leg that slides? A photo straight down shows the shape best.
other Keith
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JamesE
Pooh-Bah
Reged: 10/22/07
Posts: 1117
Loc: Westbank, BC, Canada
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Quote:
I agree with James that this looks like Preston's Silver Hammer has been at play again!
Oh that's funny.........
"Bang, Bang, Pres-tons Silver Hammer came down.....upon the lens. Ba-dump-bump-bump....Bang, Bang, Pres-tons Silver Hammer made sure, the lens was dead"
Sorry HamRadio. Just went a bit off topic.
Is there writing on the other side of the lens cell. Does the dew shield slide on or is it threaded on. Maybe set it up as is and take a few more pics. Keith might be right that it is an HOC objective. That is a shame.
Cheers,
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James
(Thanks to Attilla for the Clear Sky charts)
Current Projects : Tasco 15TEA - 3 inch pier mounted planetary scope
Priorities : Wife, Kids
Edited by JamesE (09/19/09 01:03 PM)
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Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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The part with the objective screws on the tube and there is no dew shield extending beyond what you see.. I will try and get more pictures later.. Now all I have to do is figure out how to replace it!
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Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
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actionhac
professor emeritus
Reged: 08/09/08
Posts: 735
Loc: WA
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If it were mine I would carefully clean and try it out. But that's me, I loved kaliedoscopes when they were popular in the 60's and this objective could provide some very stimulating views.
Robert
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Chuck Faranda
super member
Reged: 03/31/07
Posts: 146
Loc: Florida
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You can try http://www.astronomy-mall.com/astro.parts.outlet/ you never know what Don has hidden away. While you are hunting for a replacement build a mask and use the sweet spot in the center, you may have 50-60mm left there.....
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Regards,
Chuck Faranda
See my vintage scopes at http://ccdastro.com/vintage.html
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dawsonian2000
professor emeritus
Reged: 07/26/06
Posts: 573
Loc: Riverview, FL, USA
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Hey Ham Radio,
The Island Eyepiece and Telescope Ltd. 83mm x 1200mm objective on the following links should work. I purchased a 93mm x 1000mm of the same type for my 90mm Konus refractor and it works quite well. It is a Vixen-Spec achromat that should fit your scope. Hope this helps.
http://www.islandeyepiece.com/shopdisplayproducts.asp?page=2
http://www.islandeyepiece.com/shopexd.asp?id=231
Mel
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Clear Skies, Forever!
The Vega Sky Center
10" (254mm) F/5.65 Home Built Fork Mounted Newtonian Reflector
5" (127mm) F/9.4 Home Built Refractor (under construction)
3.5" (90mm) F/11.1 "Vixen-Spec Modified" Konus Refractor
3.1" (80mm) F/6 Scopos ED APO Refractor
4.5" (114mm) F/8 Tasco 11te-5 Newtonian (under restoration)
2.4" (60mm) F/16.7 Tasco 7te-5 Refractor
2.4" (60mm) F/15 Jason Discoverer 313 Refractor
http://www.vega-sky-center.com
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dawsonian2000
professor emeritus
Reged: 07/26/06
Posts: 573
Loc: Riverview, FL, USA
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BTW Ham Radio,
The price of the 83mm x 1200mm objective is $159.95. Though it states 83mm in diameter, it should fit. They allow for the thickness of the retainer ring, which has a clear aperture inside diameter of 80mm in most cases. Therefore the retainer ring takes up the additional 3mm. The cell is not included though. Not a problem since you will be using the one you already have.
The objective on Island Eyepiece and Telescope Ltd. is listed as being research-grade. The 90mm lens I have is also listed the same and can be pushed to 227x power with good results! Now get that awesome scope back in business!
Mel
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Clear Skies, Forever!
The Vega Sky Center
10" (254mm) F/5.65 Home Built Fork Mounted Newtonian Reflector
5" (127mm) F/9.4 Home Built Refractor (under construction)
3.5" (90mm) F/11.1 "Vixen-Spec Modified" Konus Refractor
3.1" (80mm) F/6 Scopos ED APO Refractor
4.5" (114mm) F/8 Tasco 11te-5 Newtonian (under restoration)
2.4" (60mm) F/16.7 Tasco 7te-5 Refractor
2.4" (60mm) F/15 Jason Discoverer 313 Refractor
http://www.vega-sky-center.com
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Doug76
Postmaster
Reged: 12/05/07
Posts: 5574
Loc: SE Louisiana, future Texan
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Sheldon Faworski, a member here, has 80mm/1200mm Carton objectives that will fix that right up.
I don't give out people's email addresses, but he has a store listing here in our Classifieds
http://www.cloudynights.com/classifieds/showcat.php?cat=500&ppuser=25634
and you can contact him through it.
Just so you know, me and him built me an 80mm/1200mm using the lens I referred to, and it is mega-sweet! You'll love it.
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Doug
Truckstop Astronomer
The Universe, the light of God, in all it's majesty
6 achro refractors, 50mm-150mm
1 apo refractor, 90mm
1 SCT, 8 inch
UO Abbe Volcano Tops
Faworski Ortho's
Panoptic 24mm
Carton 100mm f/13 under construction 
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dawsonian2000
professor emeritus
Reged: 07/26/06
Posts: 573
Loc: Riverview, FL, USA
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Hey Doug76,
That is a great suggestion. Sheldon Faworski should have crossed my mind as well as IE&T Ltd. I have purchased several items from him. Hope he has an objective Ham Radio could use. The Carlton lens are definitely well praised. If not, IE&T is an alternate; and they should have them in stock.
Mel
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Clear Skies, Forever!
The Vega Sky Center
10" (254mm) F/5.65 Home Built Fork Mounted Newtonian Reflector
5" (127mm) F/9.4 Home Built Refractor (under construction)
3.5" (90mm) F/11.1 "Vixen-Spec Modified" Konus Refractor
3.1" (80mm) F/6 Scopos ED APO Refractor
4.5" (114mm) F/8 Tasco 11te-5 Newtonian (under restoration)
2.4" (60mm) F/16.7 Tasco 7te-5 Refractor
2.4" (60mm) F/15 Jason Discoverer 313 Refractor
http://www.vega-sky-center.com
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strdst
scholastic sledgehammer
Reged: 03/23/08
Posts: 834
Loc: Oregon USA
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Quote:
If it were mine I would carefully clean and try it out. But that's me, I loved kaliedoscopes when they were popular in the 60's and this objective could provide some very stimulating views.
Robert
This is for you Robert..
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strdst
scholastic sledgehammer
Reged: 03/23/08
Posts: 834
Loc: Oregon USA
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And looking into the eyepiece...
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refractory
Pooh-Bah
Reged: 02/05/05
Posts: 1234
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If civilization (such as it is) ever falls you can use that objective as a hide scraper and shaving razor.
Jess Tauber
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Chuck Faranda
super member
Reged: 03/31/07
Posts: 146
Loc: Florida
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CF
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Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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Thanks for the ideas folks. I have sent Sheldon an email and we will see what happens.. Now I have to work on the slow motion control on one of the axis which seems to have a little slop in it..
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Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
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actionhac
professor emeritus
Reged: 08/09/08
Posts: 735
Loc: WA
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Keith, wild, simply wild. What is that? You don't want to grab that finder by mistake if your doing some serious observing.
If sheldon dosn't have an objective another possibility is a circle T 80x1200. These are very good lenses and very common. TOWA 339 and MEADE 300 scopes come to mind. I've had 2 and performance is very nice. I paid $100.00 for the first one and $175.00 for the second in a years span, and this was for the whole complete scope.
I know it's a shame to take parts from a nice classic, but given your scopes rarity I think it's worth considering and less money spent, and a objective of known high quality.
Robert
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strdst
scholastic sledgehammer
Reged: 03/23/08
Posts: 834
Loc: Oregon USA
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Quote:
Keith, wild, simply wild. What is that? You don't want to grab that finder by mistake if your doing some serious observing.
Robert
Well maybe, if you're doing some serious pot I work in a city park and find lots of interesting things. Last week an alert park patron described a suspicious item she thought might be a pipe bomb in the women's room. I was more like thinking it was  something else. Turns out we were both wrong. After shaking it I realized it was just a kaleidoscope, you know for kids!
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actionhac
professor emeritus
Reged: 08/09/08
Posts: 735
Loc: WA
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Amazing find Keith, I'd like a really big one.
A TOWA 80x1200 just appeared over on Astromart for $95.00, good chance to replace that lens and help others out by parting out the rest of the scope. I'll take the tripod legs!
Robert
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Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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Figures but I got an email from Sheldon that he has what I need for $110 and he will put it in my cell for me.. I want to thanks all you for the help.. Now all I have to do is figure out if I can get rid of the small amount of slop in the RA axis slow motion gear..
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Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
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Doug76
Postmaster
Reged: 12/05/07
Posts: 5574
Loc: SE Louisiana, future Texan
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You'll love the lens, I guarantee.
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Doug
Truckstop Astronomer
The Universe, the light of God, in all it's majesty
6 achro refractors, 50mm-150mm
1 apo refractor, 90mm
1 SCT, 8 inch
UO Abbe Volcano Tops
Faworski Ortho's
Panoptic 24mm
Carton 100mm f/13 under construction
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Bonco
Carpal Tunnel
Reged: 04/17/06
Posts: 2297
Loc: Florida
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What am I missing. I went to the link for Sheldon and didn't find anything that referred to him. I'd like to contact him for an 80/1200 lens.
Thanks, Bill
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RV6
Meade 2045
6 inch f/4 RFT R. Fagin Optics
TV Genesis
2.4 inch Lafayette Equitorial
3 inch Polarex/Unitron Equitorial
10 inch Zhumell
PST 40mm Solar scope
4 inch F/15 Antares
2.4 inch Unitron Equitorial
Tasco 10K 80mm/1200mm
Towa 339 Restored
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Doug76
Postmaster
Reged: 12/05/07
Posts: 5574
Loc: SE Louisiana, future Texan
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http://www.cloudynights.com/ubbthreads/showprofile.php?Cat=&User=25634
Go to the bottom of the page, and click on "send a private message"
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Doug
Truckstop Astronomer
The Universe, the light of God, in all it's majesty
6 achro refractors, 50mm-150mm
1 apo refractor, 90mm
1 SCT, 8 inch
UO Abbe Volcano Tops
Faworski Ortho's
Panoptic 24mm
Carton 100mm f/13 under construction
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Doug76
Postmaster
Reged: 12/05/07
Posts: 5574
Loc: SE Louisiana, future Texan
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Did you manage to contact him, Bill?
I know for a fact that lens is sweet. I really love the scope I have built around that lens. A super keeper, for sure.
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Doug
Truckstop Astronomer
The Universe, the light of God, in all it's majesty
6 achro refractors, 50mm-150mm
1 apo refractor, 90mm
1 SCT, 8 inch
UO Abbe Volcano Tops
Faworski Ortho's
Panoptic 24mm
Carton 100mm f/13 under construction
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Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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Well I sent the cell out to Sheldon yesterday morning, and already am wishing it was back!
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Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
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Doug76
Postmaster
Reged: 12/05/07
Posts: 5574
Loc: SE Louisiana, future Texan
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It will return fast. He is very good about that.
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Doug
Truckstop Astronomer
The Universe, the light of God, in all it's majesty
6 achro refractors, 50mm-150mm
1 apo refractor, 90mm
1 SCT, 8 inch
UO Abbe Volcano Tops
Faworski Ortho's
Panoptic 24mm
Carton 100mm f/13 under construction
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Bonco
Carpal Tunnel
Reged: 04/17/06
Posts: 2297
Loc: Florida
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Quote:
Did you manage to contact him, Bill?
I know for a fact that lens is sweet. I really love the scope I have built around that lens. A super keeper, for sure.
Thanks, I just sent him a private email.
Bill
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RV6
Meade 2045
6 inch f/4 RFT R. Fagin Optics
TV Genesis
2.4 inch Lafayette Equitorial
3 inch Polarex/Unitron Equitorial
10 inch Zhumell
PST 40mm Solar scope
4 inch F/15 Antares
2.4 inch Unitron Equitorial
Tasco 10K 80mm/1200mm
Towa 339 Restored
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Doug76
Postmaster
Reged: 12/05/07
Posts: 5574
Loc: SE Louisiana, future Texan
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Cool. He's A-1 to deal with.
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Doug
Truckstop Astronomer
The Universe, the light of God, in all it's majesty
6 achro refractors, 50mm-150mm
1 apo refractor, 90mm
1 SCT, 8 inch
UO Abbe Volcano Tops
Faworski Ortho's
Panoptic 24mm
Carton 100mm f/13 under construction
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Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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I got an email from Sheldon yesterday and he had to do some machining to get the new lens to fit my cell. Seems all the new lens are .02 inches bigger.. Definitely a good person to work with! Now anyone want the old lens to show what you don't want to happen??
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Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
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grendel
sage
Reged: 04/12/09
Posts: 250
Loc: Canterbury, Kent, UK
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maybe donate it to preston!
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Bonco
Carpal Tunnel
Reged: 04/17/06
Posts: 2297
Loc: Florida
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I contacted Sheldon concerning 80mm achromats. He's got them. Likely I'll spring for one. Hey I'm gonna end up with a really good 80mm Tasco when I'm finished spending all this money...hehehe.
Bill
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RV6
Meade 2045
6 inch f/4 RFT R. Fagin Optics
TV Genesis
2.4 inch Lafayette Equitorial
3 inch Polarex/Unitron Equitorial
10 inch Zhumell
PST 40mm Solar scope
4 inch F/15 Antares
2.4 inch Unitron Equitorial
Tasco 10K 80mm/1200mm
Towa 339 Restored
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dawsonian2000
professor emeritus
Reged: 07/26/06
Posts: 573
Loc: Riverview, FL, USA
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Let's turn it into a kaleidoscope, then give it to Preston!
Mel
--------------------
Clear Skies, Forever!
The Vega Sky Center
10" (254mm) F/5.65 Home Built Fork Mounted Newtonian Reflector
5" (127mm) F/9.4 Home Built Refractor (under construction)
3.5" (90mm) F/11.1 "Vixen-Spec Modified" Konus Refractor
3.1" (80mm) F/6 Scopos ED APO Refractor
4.5" (114mm) F/8 Tasco 11te-5 Newtonian (under restoration)
2.4" (60mm) F/16.7 Tasco 7te-5 Refractor
2.4" (60mm) F/15 Jason Discoverer 313 Refractor
http://www.vega-sky-center.com
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Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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A slight off topic question, approx how much does it cost now days to get a mirror resurfaced? I have a chance to pick up an 8 in Criterion with a surface flaw on the mirror..I am getting the 4.25 in Celestron reflector he has tho..
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Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
Edited by Ham Radio (09/25/09 08:55 AM)
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dawsonian2000
professor emeritus
Reged: 07/26/06
Posts: 573
Loc: Riverview, FL, USA
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Hi Ham Radio,
There are a number of companies out there that will refigure an under or over corrected mirror. But, if the mirror's figure is good, I would recommend Spectrum Coatings. Depending on the type of coating you would like (standard, or enhanced) the price range would be between $70.00 and $125.00 plus return shipping. The price includes the secondary if under 3.1" minor axis. But, they currently have a 10% off September Sale going on now. They are currently re-aluminizing my 4.5" Tasco 11te-5 mirror and secondary. You can check them out here: Spectrum Coatings - Recoating prices or Spectrum Coatings Home. Check out Paul Zacharias' videos while you are on his site. They are very informative.
Now, if you need refiguring work performed, you can check out O.W.L. at: Optical Wave Labs
For more companies to consider, please go to my website shown below and click on the "Resource Links" button near the top of the page, then click the "ATM, Parts, Supplies, & Manufacturers" drop-down menu. There are a host of other vendors you may want to contact.
Mel
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wfj
sage
Reged: 01/10/08
Posts: 260
Loc: California, Santa Cruz County
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Quote:
A slight off topic question, approx how much does it cost now days to get a mirror resurfaced? I have a chance to pick up an 8 in Criterion with a surface flaw on the mirror..I am getting the 4.25 in Celestron reflector he has tho..
Also check out http://www.alcoat.net
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Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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Well I got the new objective from Sheldon yesterday and took the scope out last night... All is very good.. I have been looking into the slop on the RA axis and it is like the worm gear and the gear on the shaft have play between them. Like the worm gear is worn or something. I did notice also that the worm gear shaft is bent on one side, could that be the issue??
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Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
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dawsonian2000
professor emeritus
Reged: 07/26/06
Posts: 573
Loc: Riverview, FL, USA
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Ham Radio,
Could you provide a photo? Even inexpensive equatorial mount slewing systems have adjustable components. The bent shaft on the worm gear may have something to do with it since undue force was applied to its shaft to cause the bend. A photo(s) is worth a thousand words, so post when you can.
Mel
--------------------
Clear Skies, Forever!
The Vega Sky Center
10" (254mm) F/5.65 Home Built Fork Mounted Newtonian Reflector
5" (127mm) F/9.4 Home Built Refractor (under construction)
3.5" (90mm) F/11.1 "Vixen-Spec Modified" Konus Refractor
3.1" (80mm) F/6 Scopos ED APO Refractor
4.5" (114mm) F/8 Tasco 11te-5 Newtonian (under restoration)
2.4" (60mm) F/16.7 Tasco 7te-5 Refractor
2.4" (60mm) F/15 Jason Discoverer 313 Refractor
http://www.vega-sky-center.com
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Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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Here are a couple of photos. Hopefully they will give someone an idea.
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Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
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Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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Here is another
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Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
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Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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And last but not least...
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Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
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dawsonian2000
professor emeritus
Reged: 07/26/06
Posts: 573
Loc: Riverview, FL, USA
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Hi Ham Radio,
Thanks for posting the images! From the looks of your EQ mount, it is very reminicent of the Tasco 7te-5 EQ. If there is play between the worm and main gears you should be able to loosen the nuts on the pivot arms attached to the worm gear and tilt the worm a little closer to the main gear then tighten them down. Just don't force the gears together too much. You just want them to make soft contact so that the mount will still run smoothly with little to no slop. Hope the attached diagram will help also. There are other adjustments that can be made to the slow motion control shafts too.
Mel
--------------------
Clear Skies, Forever!
The Vega Sky Center
10" (254mm) F/5.65 Home Built Fork Mounted Newtonian Reflector
5" (127mm) F/9.4 Home Built Refractor (under construction)
3.5" (90mm) F/11.1 "Vixen-Spec Modified" Konus Refractor
3.1" (80mm) F/6 Scopos ED APO Refractor
4.5" (114mm) F/8 Tasco 11te-5 Newtonian (under restoration)
2.4" (60mm) F/16.7 Tasco 7te-5 Refractor
2.4" (60mm) F/15 Jason Discoverer 313 Refractor
http://www.vega-sky-center.com
|
Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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I took a look at the adjustment and set it so the two are meshed together about a firmly as I can get it. The movement works OK, but I can still move the RA very slightly, like maybe less than 1/16". Maybe that's not slop at all? I haven't ever had a scope with slow motion control on it so I am not to sure. There is absolutely no movement in the Dec. shaft though. I will play with it some more, but I am beginning it will be something just to live with.
--------------------
Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
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dawsonian2000
professor emeritus
Reged: 07/26/06
Posts: 573
Loc: Riverview, FL, USA
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Hi Ham Radio,
Happy to see CN is back online!
Going further with your mount situation, there are also adjustment components on the worm shaft that spins the RA Axis. It is comprised of an outer hex nut with an inner slotted ring nut with the small shaft sticking out of for the slow motion cable. You can loosen the hex nut which will allow you to adjust the inner ring nut in or out until you cleanup the play. Once you hit the sweet spot, lock down the hex nut. You will have to play with adjustments a bit, but I think it should improve the play issue. I had a similar situation with an EQ-2, which was solved making the adjustments to this RA Axis in this manner.
Mel
--------------------
Clear Skies, Forever!
The Vega Sky Center
10" (254mm) F/5.65 Home Built Fork Mounted Newtonian Reflector
5" (127mm) F/9.4 Home Built Refractor (under construction)
3.5" (90mm) F/11.1 "Vixen-Spec Modified" Konus Refractor
3.1" (80mm) F/6 Scopos ED APO Refractor
4.5" (114mm) F/8 Tasco 11te-5 Newtonian (under restoration)
2.4" (60mm) F/16.7 Tasco 7te-5 Refractor
2.4" (60mm) F/15 Jason Discoverer 313 Refractor
http://www.vega-sky-center.com
|
Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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Ahhhh I will have to look into that.. Thanks..
--------------------
Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
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Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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Finally had time to try dawsonian2000's advise and looks like the play is all gone! Now to track down another 6X30 finder that has cross hairs since mine doesn't.. Thanks to all for the help..
--------------------
Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
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dawsonian2000
professor emeritus
Reged: 07/26/06
Posts: 573
Loc: Riverview, FL, USA
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Glad it all worked out for you Ham Radio! It was a pleasure to help.
Now for your finder crosshair issue. If you already have a 6x30 finder without the crosshairs, I may be able to help you with that also if it is possible to remove its eyepiece. If you can, post a photo of the finder and eyepiece. I had to replace crosshairs on a 6x30 finder I had some time ago. I wish I still had it to give to you. Nevertheless, I believe there is a chance we can resolve this issue too.
Mel
--------------------
Clear Skies, Forever!
The Vega Sky Center
10" (254mm) F/5.65 Home Built Fork Mounted Newtonian Reflector
5" (127mm) F/9.4 Home Built Refractor (under construction)
3.5" (90mm) F/11.1 "Vixen-Spec Modified" Konus Refractor
3.1" (80mm) F/6 Scopos ED APO Refractor
4.5" (114mm) F/8 Tasco 11te-5 Newtonian (under restoration)
2.4" (60mm) F/16.7 Tasco 7te-5 Refractor
2.4" (60mm) F/15 Jason Discoverer 313 Refractor
http://www.vega-sky-center.com
|
Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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|
Here is a pic of the finder.. There isn't even place inside the finder that looks like it had crosshairs..
--------------------
Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
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dawsonian2000
professor emeritus
Reged: 07/26/06
Posts: 573
Loc: Riverview, FL, USA
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|
Hey Ham Radio,
Can you remove the eyepiece on the finder and take a picture of the inside end of it? If you can, I would like for you try an experiment, but I would need to see what it looks like.
Mel
--------------------
Clear Skies, Forever!
The Vega Sky Center
10" (254mm) F/5.65 Home Built Fork Mounted Newtonian Reflector
5" (127mm) F/9.4 Home Built Refractor (under construction)
3.5" (90mm) F/11.1 "Vixen-Spec Modified" Konus Refractor
3.1" (80mm) F/6 Scopos ED APO Refractor
4.5" (114mm) F/8 Tasco 11te-5 Newtonian (under restoration)
2.4" (60mm) F/16.7 Tasco 7te-5 Refractor
2.4" (60mm) F/15 Jason Discoverer 313 Refractor
http://www.vega-sky-center.com
|
dawsonian2000
professor emeritus
Reged: 07/26/06
Posts: 573
Loc: Riverview, FL, USA
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|
Ham Radio
Oh, I nearly forgot! I am not sure if the gray portion of the eyepiece can be unscrewed from the chrome barrel without the eyepieces elements coming loose, so please be careful. I am hoping that the gray unit is a self-contained eyepiece that is screwed onto the chrome barrel.
Mel
--------------------
Clear Skies, Forever!
The Vega Sky Center
10" (254mm) F/5.65 Home Built Fork Mounted Newtonian Reflector
5" (127mm) F/9.4 Home Built Refractor (under construction)
3.5" (90mm) F/11.1 "Vixen-Spec Modified" Konus Refractor
3.1" (80mm) F/6 Scopos ED APO Refractor
4.5" (114mm) F/8 Tasco 11te-5 Newtonian (under restoration)
2.4" (60mm) F/16.7 Tasco 7te-5 Refractor
2.4" (60mm) F/15 Jason Discoverer 313 Refractor
http://www.vega-sky-center.com
|
Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
|
|
OK finally got around to getting the pics of the eyepiece.. Hope these help out...
--------------------
Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
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dawsonian2000
professor emeritus
Reged: 07/26/06
Posts: 573
Loc: Riverview, FL, USA
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|
Thanks for providing the photo of the inside end of the eyepiece, Ham Radio! It appears that the eyepiece may have never had a cross hair. Nevertheless, you may still be able to install one. It all depends on where the focal point of the eyepiece is located. It could be outside of the field lens, or between the eye lens and field lens (inside of the eyepiece). Now, the next step is to find out which is the case.
Try this experiment... With the eyepiece removed as you have it, take a short length of thread and stretch it over the inside retainer end of the eyepiece in front of the field lens and hold it in place with your thumb and index finger. Then look into the eyepiece and make note whether the thread is in focus within the field of view. If the thread appears sharp, you are in good shape and could proceed in making some cross hair strands of copper wire. Before I go forward with addition steps, please let me know the results of this experiment and I will elaborate further. Look forward to your reply. I will clarify any questions if needed.
Mel
--------------------
Clear Skies, Forever!
The Vega Sky Center
10" (254mm) F/5.65 Home Built Fork Mounted Newtonian Reflector
5" (127mm) F/9.4 Home Built Refractor (under construction)
3.5" (90mm) F/11.1 "Vixen-Spec Modified" Konus Refractor
3.1" (80mm) F/6 Scopos ED APO Refractor
4.5" (114mm) F/8 Tasco 11te-5 Newtonian (under restoration)
2.4" (60mm) F/16.7 Tasco 7te-5 Refractor
2.4" (60mm) F/15 Jason Discoverer 313 Refractor
http://www.vega-sky-center.com
|
Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
|
|
I have found another finder that is from Sheldon that is the same manufacturer as the scope. Thanks to all for the help. I think this will just about complete the repairs on the scope. Now all I have to do is get clear skies again..
--------------------
Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
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dawsonian2000
professor emeritus
Reged: 07/26/06
Posts: 573
Loc: Riverview, FL, USA
|
|
Ham Radio,
That's awesome! Once you have the entire scope setup, please provide us a picture. It appears to be a really great classic telescope.
Mel
--------------------
Clear Skies, Forever!
The Vega Sky Center
10" (254mm) F/5.65 Home Built Fork Mounted Newtonian Reflector
5" (127mm) F/9.4 Home Built Refractor (under construction)
3.5" (90mm) F/11.1 "Vixen-Spec Modified" Konus Refractor
3.1" (80mm) F/6 Scopos ED APO Refractor
4.5" (114mm) F/8 Tasco 11te-5 Newtonian (under restoration)
2.4" (60mm) F/16.7 Tasco 7te-5 Refractor
2.4" (60mm) F/15 Jason Discoverer 313 Refractor
http://www.vega-sky-center.com
|
Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
|
|
Hi folks.. I finally got around to taking a couple of pictures now that I am all done. The only thing I would like to do yet is paint the actual objective holder, but I can't think of a way to keep the white writing that shows the objective size and focal length which is in white..How would one go about making a dew shield instead of painting? Outside of that all seems to be well with the scope.
--------------------
Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
Edited by Ham Radio (10/25/09 05:47 PM)
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Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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|
Here is another... Also I know I shouldn't have left the legs short, but its kind of chilly outside..
--------------------
Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
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mikey cee
Post Laureate
Reged: 01/18/07
Posts: 3531
Loc: bellevue ne.
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Ham.....I'd take and dab the entire area with vaseline. Then lay it face down on clean card board and spray away. When the paint dries simply wipe the vaseline off along with any overspray or leakage of paint underneath. Or spray it right side up.Mike
--------------------
7x35 and 10x50 sears tower binocs, 3" f/10 edmunds reflector, 2.4" f/11.7 manon refractor, 6" f/8 jaegers refractor, "The 8 Ball" 8" f/13.3 brandt refractor, 3" f/15.8 sans&streiffe refractor, 3.1" f/15 selsi refractor(towa 339), 2.4" f/15 sears refractor, selsi 30x30mm spyglass, criterion 5-draw 25x45x75x spyglass(1957), 4.25" f/14.8 tasco 20te.
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deSitter
Carpal Tunnel
Reged: 12/09/04
Posts: 2928
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Quote:
Hi folks.. I finally got around to taking a couple of pictures now that I am all done. The only thing I would like to do yet is paint the actual objective holder, but I can't think of a way to keep the white writing that shows the objective size and focal length which is in white..How would one go about making a dew shield instead of painting? Outside of that all seems to be well with the scope.
Painting recessed lettering is very easy if you use good quality smooth black paint as the base and let it dry a long time - use white Latex applied with a damp cloth - it goes right into the lettering and you just wipe off the excess.
It's a pretty little scope, very Japanese looking, like an early Tak or Vixen.
-drl
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deSitter
Carpal Tunnel
Reged: 12/09/04
Posts: 2928
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The dew shield can be made from a length of aluminum tubing with self-adhesive felt bumpers of sufficient thickness to grab the outer rim of the objective cell. Check with Hastings to start.
-drl
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dawsonian2000
professor emeritus
Reged: 07/26/06
Posts: 573
Loc: Riverview, FL, USA
|
|
Hi Ham Radio,
Your 80mm looks fantastic!  As for painting the objective cell without covering the white lens specs lettering, you could apply Painter's Tape over the entire flat surface where the lens specs are locate, then trimming the access with a sharp utensil. Doe the surface with the specs need painting as well? If parts of this surface needs painting, you could just mask the objective specs and any other surface area with the painter's tape before painting; this includes the threads. Please post a photo of the lens cell so I/ we can make a better determination.
As for a dew shield, you can use a section of PVC or aluminum tubing. Was the original dew shield of the screw-on, slide-on type?
Mel
--------------------
Clear Skies, Forever!
The Vega Sky Center
10" (254mm) F/5.65 Home Built Fork Mounted Newtonian Reflector
5" (127mm) F/9.4 Home Built Refractor (under construction)
3.5" (90mm) F/11.1 "Vixen-Spec Modified" Konus Refractor
3.1" (80mm) F/6 Scopos ED APO Refractor
4.5" (114mm) F/8 Tasco 11te-5 Newtonian (under restoration)
2.4" (60mm) F/16.7 Tasco 7te-5 Refractor
2.4" (60mm) F/15 Jason Discoverer 313 Refractor
http://www.vega-sky-center.com
Edited by dawsonian2000 (10/26/09 09:49 AM)
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Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
|
|
The only reason I was thinking of painting it is the fact that the gray color is slightly darker than the rest of the gray paint. I am beginning to think maybe a dew shield might be a better way to go. It didn't have one when I got it. It would be a slide on type.
--------------------
Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
|
Bonco
Carpal Tunnel
Reged: 04/17/06
Posts: 2297
Loc: Florida
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Following advice on this thread I sent My Towa model 339 lens cell and damaged lens to Sheldon for replacement. If the Carton lens lives up to its reputaion, I'll have a fine 80mm f/15.
Bill
--------------------
RV6
Meade 2045
6 inch f/4 RFT R. Fagin Optics
TV Genesis
2.4 inch Lafayette Equitorial
3 inch Polarex/Unitron Equitorial
10 inch Zhumell
PST 40mm Solar scope
4 inch F/15 Antares
2.4 inch Unitron Equitorial
Tasco 10K 80mm/1200mm
Towa 339 Restored
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dawsonian2000
professor emeritus
Reged: 07/26/06
Posts: 573
Loc: Riverview, FL, USA
|
|
I understand, Ham Radio. A dew shield is a must. Just make certain to flock it well with flocking material (such as adhesive felt, or Protostar flocking paper), or with flat black enamel.
Mel
--------------------
Clear Skies, Forever!
The Vega Sky Center
10" (254mm) F/5.65 Home Built Fork Mounted Newtonian Reflector
5" (127mm) F/9.4 Home Built Refractor (under construction)
3.5" (90mm) F/11.1 "Vixen-Spec Modified" Konus Refractor
3.1" (80mm) F/6 Scopos ED APO Refractor
4.5" (114mm) F/8 Tasco 11te-5 Newtonian (under restoration)
2.4" (60mm) F/16.7 Tasco 7te-5 Refractor
2.4" (60mm) F/15 Jason Discoverer 313 Refractor
http://www.vega-sky-center.com
|
Bonco
Carpal Tunnel
Reged: 04/17/06
Posts: 2297
Loc: Florida
|
|
Sent my Towa 80mm cell to Sheldon to have him install a Carton lens. I'll post results once I test it.
Cheers, Bill
--------------------
RV6
Meade 2045
6 inch f/4 RFT R. Fagin Optics
TV Genesis
2.4 inch Lafayette Equitorial
3 inch Polarex/Unitron Equitorial
10 inch Zhumell
PST 40mm Solar scope
4 inch F/15 Antares
2.4 inch Unitron Equitorial
Tasco 10K 80mm/1200mm
Towa 339 Restored
|
Doug76
Postmaster
Reged: 12/05/07
Posts: 5574
Loc: SE Louisiana, future Texan
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Quote:
Following advice on this thread I sent My Towa model 339 lens cell and damaged lens to Sheldon for replacement. If the Carton lens lives up to its reputation, I'll have a fine 80mm f/15.
Bill
It will, trust me.
I recently changed out my Towa 60mm f/11.7 lens for a Carton equivalent (supplied by Sheldon), and find a subtle but noticeable improvement in the view. Stars are more pinpoint, and the background seems darker.
--------------------
Doug
Truckstop Astronomer
The Universe, the light of God, in all it's majesty
6 achro refractors, 50mm-150mm
1 apo refractor, 90mm
1 SCT, 8 inch
UO Abbe Volcano Tops
Faworski Ortho's
Panoptic 24mm
Carton 100mm f/13 under construction
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Ham Radio
member
Reged: 09/18/09
Posts: 66
Loc: Hampton, Mn
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I want to thank everyone who has helped me out with this scope. I have just acquired a Tasco 15TE and the CFO of the household says something will have to go. If anyone is interested in this scope please get with me. I am only looking to get back what I have into the scope.
--------------------
Tasco 15TE
Mizar 80mmX1200mm
8 Inch reflector awaiting for me to figure out what to do with it..
|
Bonco
Carpal Tunnel
Reged: 04/17/06
Posts: 2297
Loc: Florida
|
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Quote:
Sent my Towa 80mm cell to Sheldon to have him install a Carton lens. I'll post results once I test it.
Cheers, Bill
Installed the lens on my Tasco tube as I'm refurbishing the Towa tube. All I can say is the Carton lens is impressive. Great color control, contrast, and sharpness. It's exceeded my expectations and I plan to get many years of enjoyment using it. I think it on par and maybe better than the outstanding Polarex 76mm that I own. I'm looking forward to doing a comparo. Thanks for the advice to buy this lens.
Bill
--------------------
RV6
Meade 2045
6 inch f/4 RFT R. Fagin Optics
TV Genesis
2.4 inch Lafayette Equitorial
3 inch Polarex/Unitron Equitorial
10 inch Zhumell
PST 40mm Solar scope
4 inch F/15 Antares
2.4 inch Unitron Equitorial
Tasco 10K 80mm/1200mm
Towa 339 Restored
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dawsonian2000
professor emeritus
Reged: 07/26/06
Posts: 573
Loc: Riverview, FL, USA
|
|
Congrats, Bill! As I continue to read the merits of the Carton objective, everyone's comments makes me want to build one myself. I look forward to reading your comparison on your Carton versus the Polarex.
Mel
--------------------
Clear Skies, Forever!
The Vega Sky Center
10" (254mm) F/5.65 Home Built Fork Mounted Newtonian Reflector
5" (127mm) F/9.4 Home Built Refractor (under construction)
3.5" (90mm) F/11.1 "Vixen-Spec Modified" Konus Refractor
3.1" (80mm) F/6 Scopos ED APO Refractor
4.5" (114mm) F/8 Tasco 11te-5 Newtonian (under restoration)
2.4" (60mm) F/16.7 Tasco 7te-5 Refractor
2.4" (60mm) F/15 Jason Discoverer 313 Refractor
http://www.vega-sky-center.com
|
Bonco
Carpal Tunnel
Reged: 04/17/06
Posts: 2297
Loc: Florida
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|
Well, Just sent my Tasco lens and cell to Sheldon for replacement. The Tasco lens is ok but not in the same class of the Carton lens he recently sent me. This could be for several reasons and I've asked Sheldon to comment on it. 1) Could be assembled improperly 2)Might need foil spacers. 3) might not be original which is probably impossible to say.
Anyway once I'm done with this project I'll have two 80mm/F15's that optically will likely stand up to any comparo of similar Achro's. If they perform the same I'll toss a coin and offer one of them for sale at a good price.
Cheers, Bill
--------------------
RV6
Meade 2045
6 inch f/4 RFT R. Fagin Optics
TV Genesis
2.4 inch Lafayette Equitorial
3 inch Polarex/Unitron Equitorial
10 inch Zhumell
PST 40mm Solar scope
4 inch F/15 Antares
2.4 inch Unitron Equitorial
Tasco 10K 80mm/1200mm
Towa 339 Restored
|
dawsonian2000
professor emeritus
Reged: 07/26/06
Posts: 573
Loc: Riverview, FL, USA
|
|
Hey Bill,
Have you had the opportunity to compare the Tasco and Carton objectives?
Mel
--------------------
Clear Skies, Forever!
The Vega Sky Center
10" (254mm) F/5.65 Home Built Fork Mounted Newtonian Reflector
5" (127mm) F/9.4 Home Built Refractor (under construction)
3.5" (90mm) F/11.1 "Vixen-Spec Modified" Konus Refractor
3.1" (80mm) F/6 Scopos ED APO Refractor
4.5" (114mm) F/8 Tasco 11te-5 Newtonian (under restoration)
2.4" (60mm) F/16.7 Tasco 7te-5 Refractor
2.4" (60mm) F/15 Jason Discoverer 313 Refractor
http://www.vega-sky-center.com
|
Bonco
Carpal Tunnel
Reged: 04/17/06
Posts: 2297
Loc: Florida
|
|
Quote:
Hey Bill,
Have you had the opportunity to compare the Tasco and Carton objectives?
Yes I have compared them and the Carton is way superior in contrast, sharpness and dark field when viewing Jupiter. Very noticable difference. So I'm replacing the Tasco lens with another Carton. However, it's possible that the Tasco lens could be tweeked into better performance. Also it's possible the lens in the Tasco is not original. Based on many reports I've read the Tasco and Towa lenses can be excellent.
I've asked Sheldon to help me evaluate the Tasco lens, hey maybe all it needs is spacers. We'll see.
Mel
--------------------
RV6
Meade 2045
6 inch f/4 RFT R. Fagin Optics
TV Genesis
2.4 inch Lafayette Equitorial
3 inch Polarex/Unitron Equitorial
10 inch Zhumell
PST 40mm Solar scope
4 inch F/15 Antares
2.4 inch Unitron Equitorial
Tasco 10K 80mm/1200mm
Towa 339 Restored
|
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