Page 3 of 5 FirstFirst 12345 LastLast
Results 21 to 30 of 50
Like Tree112Likes

Thread: A Tasco 11TR fell into my lap..

  1. #21
    Gabby76's Avatar
    Gabby76 is offline Super Moderator
    Points: 74,993, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 99.9%
    Achievements:
    2 Posts Achievement20 Posts Achievement!Gallery Achievement!Album Achievement!50 Posts Achievement!
    Awards:
    Hyperactive Geek - Silver 2rst place for Activity!
    Join Date
    Jan 2016
    Location
    Live: Slovakia Work: Canada
    Posts
    17,439
    Points
    74,993
    Level
    100
    Thanks
    3,063
    Thanked 5,485x 4,622 Posts
    Blog Entries
    4

    Default Re: A Tasco 11TR fell into my lap..



    You may be able to cut the focuser tube a bit from looking at the picture but if you cannot get the full 30mm you may not be able to focus some eyepieces.
    There is always this if the heights are closer to stock: https://agenaastro.com/gso-1-25-refl...gle-speed.html
    Or you may find a helical focuser that would work. Good luck
    kanadalainen likes this.
    Refractors: Antares 105 f/15, Bresser 102XL f/13.2, Celestron 102 f/6.5, 2-150 f/8, Stellarvue NHNG 80 f/6.9, TAL 100RS f/10, TS 102 f/11, Vixen SD115s f/7.7
    Mounts: Manfrotto 028B/ 055PRO, Celestron SLT, Celestron CG-5/ Argo Navis, Stellarvue M2C, Vixen SXP Binoculars: Celestron Eyepieces: A-Z

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    The weakest link in the optical chain is the large nut located directly behind the eyepiece/ camera. - Gabrielle
    Ya gotta keep this Apo/Achro thing in some balance of perspective. Apos are awesome, but long focus Achros aren't that far behind them - Siriusandthepup (CN)
    Refractors kick arse precisely because they don't hide behind excuses. That is, they have no obstructions to hide behind.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

  2. The Following User Says Thank You to Gabby76 For This Useful Post:

    kanadalainen (02-04-2019)

  3. #22
    kanadalainen's Avatar
    kanadalainen is online now HYPER GIANT
    Points: 25,934, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 83.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!First 1000 Experience Points
    Join Date
    Feb 2017
    Location
    Canada
    Posts
    2,582
    Points
    25,934
    Level
    100
    Thanks
    2,579
    Thanked 2,085x 915 Posts
    Blog Entries
    1

    Default Re: A Tasco 11TR fell into my lap..

    Quote Originally Posted by Gabby76 View Post
    You may be able to cut the focuser tube a bit from looking at the picture but if you cannot get the full 30mm you may not be able to focus some eyepieces.
    There is always this if the heights are closer to stock: https://agenaastro.com/gso-1-25-refl...gle-speed.html
    Or you may find a helical focuser that would work. Good luck
    Thanks Gabby, thats a great solution. Just spitballing now, but what about simply moving the primary mirror up from the bottom of the tube? Any thoughts? 30 mm isn't too far up the tube methinks...
    Ian
    Scopes Orion XT10i f4.7 "Frosty", old Sears 6305 60mm f15 "Raquel"
    Binoculars Asahi Pentax 7x35 and 7x50, Beck Kassel 8x30 and Celestron 15x70
    Eyepieces: Leitz Periplan GF, ES68s, ES82s, TV Naglers, Meade 4000 super plossl, Nikon CFI, Olympus FK, Paracorr I, Abbe Orthos: Carl Zeiss Jena K7x (35mm), K10x (25mm)
    M110: 110 Herschel 400: 90 Comets: 2 Planets: 6

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

  4. #23
    kanadalainen's Avatar
    kanadalainen is online now HYPER GIANT
    Points: 25,934, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 83.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!First 1000 Experience Points
    Join Date
    Feb 2017
    Location
    Canada
    Posts
    2,582
    Points
    25,934
    Level
    100
    Thanks
    2,579
    Thanked 2,085x 915 Posts
    Blog Entries
    1

    Default Re: A Tasco 11TR fell into my lap..

    Prepping the Optical Tube for Paint.

    - Sand with 220 grit
    - wipe down with isopropanol
    - tape the Tasco sticker



    - Prime
    - sand
    - paint with white Rustoleum

    (to be continued)...
    Ian
    Scopes Orion XT10i f4.7 "Frosty", old Sears 6305 60mm f15 "Raquel"
    Binoculars Asahi Pentax 7x35 and 7x50, Beck Kassel 8x30 and Celestron 15x70
    Eyepieces: Leitz Periplan GF, ES68s, ES82s, TV Naglers, Meade 4000 super plossl, Nikon CFI, Olympus FK, Paracorr I, Abbe Orthos: Carl Zeiss Jena K7x (35mm), K10x (25mm)
    M110: 110 Herschel 400: 90 Comets: 2 Planets: 6

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

  5. #24
    Gabby76's Avatar
    Gabby76 is offline Super Moderator
    Points: 74,993, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 99.9%
    Achievements:
    2 Posts Achievement20 Posts Achievement!Gallery Achievement!Album Achievement!50 Posts Achievement!
    Awards:
    Hyperactive Geek - Silver 2rst place for Activity!
    Join Date
    Jan 2016
    Location
    Live: Slovakia Work: Canada
    Posts
    17,439
    Points
    74,993
    Level
    100
    Thanks
    3,063
    Thanked 5,485x 4,622 Posts
    Blog Entries
    4

    Default Re: A Tasco 11TR fell into my lap..

    Quote Originally Posted by kanadalainen View Post
    Thanks Gabby, thats a great solution. Just spitballing now, but what about simply moving the primary mirror up from the bottom of the tube? Any thoughts? 30 mm isn't too far up the tube methinks...
    Moving the mirror is another option to get the low focuser height into the proper position

    No original colour? White can be so plain at times. Candy Apple Red would look really good
    kanadalainen likes this.
    Refractors: Antares 105 f/15, Bresser 102XL f/13.2, Celestron 102 f/6.5, 2-150 f/8, Stellarvue NHNG 80 f/6.9, TAL 100RS f/10, TS 102 f/11, Vixen SD115s f/7.7
    Mounts: Manfrotto 028B/ 055PRO, Celestron SLT, Celestron CG-5/ Argo Navis, Stellarvue M2C, Vixen SXP Binoculars: Celestron Eyepieces: A-Z

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    The weakest link in the optical chain is the large nut located directly behind the eyepiece/ camera. - Gabrielle
    Ya gotta keep this Apo/Achro thing in some balance of perspective. Apos are awesome, but long focus Achros aren't that far behind them - Siriusandthepup (CN)
    Refractors kick arse precisely because they don't hide behind excuses. That is, they have no obstructions to hide behind.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

  6. #25
    kanadalainen's Avatar
    kanadalainen is online now HYPER GIANT
    Points: 25,934, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 83.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!First 1000 Experience Points
    Join Date
    Feb 2017
    Location
    Canada
    Posts
    2,582
    Points
    25,934
    Level
    100
    Thanks
    2,579
    Thanked 2,085x 915 Posts
    Blog Entries
    1

    Default Re: A Tasco 11TR fell into my lap..

    Quote Originally Posted by Gabby76 View Post
    Moving the mirror is another option to get the low focuser height into the proper position

    No original colour? White can be so plain at times. Candy Apple Red would look really good
    Thanks Gabby, I know, right? I am torn on either white or red. I've never owned a white scope, and white reflectors have a classic vibe; red/candy apple red would be much closer to the original colour of this reflector. Decisions, decisions...
    TheFatKitty and Gabby76 like this.
    Ian
    Scopes Orion XT10i f4.7 "Frosty", old Sears 6305 60mm f15 "Raquel"
    Binoculars Asahi Pentax 7x35 and 7x50, Beck Kassel 8x30 and Celestron 15x70
    Eyepieces: Leitz Periplan GF, ES68s, ES82s, TV Naglers, Meade 4000 super plossl, Nikon CFI, Olympus FK, Paracorr I, Abbe Orthos: Carl Zeiss Jena K7x (35mm), K10x (25mm)
    M110: 110 Herschel 400: 90 Comets: 2 Planets: 6

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

  7. #26
    Gabby76's Avatar
    Gabby76 is offline Super Moderator
    Points: 74,993, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 99.9%
    Achievements:
    2 Posts Achievement20 Posts Achievement!Gallery Achievement!Album Achievement!50 Posts Achievement!
    Awards:
    Hyperactive Geek - Silver 2rst place for Activity!
    Join Date
    Jan 2016
    Location
    Live: Slovakia Work: Canada
    Posts
    17,439
    Points
    74,993
    Level
    100
    Thanks
    3,063
    Thanked 5,485x 4,622 Posts
    Blog Entries
    4

    Default Re: A Tasco 11TR fell into my lap..

    Candy apple red with Wimbleton white accents
    TheFatKitty and kanadalainen like this.
    Refractors: Antares 105 f/15, Bresser 102XL f/13.2, Celestron 102 f/6.5, 2-150 f/8, Stellarvue NHNG 80 f/6.9, TAL 100RS f/10, TS 102 f/11, Vixen SD115s f/7.7
    Mounts: Manfrotto 028B/ 055PRO, Celestron SLT, Celestron CG-5/ Argo Navis, Stellarvue M2C, Vixen SXP Binoculars: Celestron Eyepieces: A-Z

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    The weakest link in the optical chain is the large nut located directly behind the eyepiece/ camera. - Gabrielle
    Ya gotta keep this Apo/Achro thing in some balance of perspective. Apos are awesome, but long focus Achros aren't that far behind them - Siriusandthepup (CN)
    Refractors kick arse precisely because they don't hide behind excuses. That is, they have no obstructions to hide behind.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

  8. #27
    TheFatKitty's Avatar
    TheFatKitty is offline HYPER GIANT
    Points: 35,421, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 16.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!365 Days+ Registered Achievement!5 Threads Achievement!50 Posts Achievement!
    Join Date
    May 2015
    Location
    TO, Canada
    Posts
    2,840
    Points
    35,421
    Level
    100
    Thanks
    1,954
    Thanked 1,770x 1,048 Posts

    Default Re: A Tasco 11TR fell into my lap..

    Hey Ian, hope all's well

    Nice to see you're getting this together! Gabrielle has a good idea for the paint; Candy Apple Red with white accents...

    Hate to say it, but you will run into focus problems with the Meade focuser. The focuser I used has the same body length as the original one. I mostly use KK Plossls in it (parfocal) and I have 1.2 centimeters of inward travel left. With my ES 68* 16mm, there's a centimeter left, and the 20mm has 1.3cm's.
    You could move the mirror upwards, but it might be easier to get another focuser, or cut down the one you have.

    Hope this helps,
    kanadalainen likes this.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    Mark
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.


    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    10" Dob, SLT102, C80-HD, Vixen-made C80
    Towa Glass: Sears 6331, 'Towatron' 60mm f/7, Jason 80mm f/15
    1961 Tasco 12TE 60mm, 1969 11TE-5 4.5". And a Canon T3 (1100D)

    TheFatKitty.Com
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    NCC-1701.Ca


  9. The Following User Says Thank You to TheFatKitty For This Useful Post:

    kanadalainen (02-10-2019)

  10. #28
    kanadalainen's Avatar
    kanadalainen is online now HYPER GIANT
    Points: 25,934, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 83.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!First 1000 Experience Points
    Join Date
    Feb 2017
    Location
    Canada
    Posts
    2,582
    Points
    25,934
    Level
    100
    Thanks
    2,579
    Thanked 2,085x 915 Posts
    Blog Entries
    1

    Default Re: A Tasco 11TR fell into my lap..

    Moving the Primary Mirror to accommodate the 1.25" focuser.

    In lieu of hacking up my Meade focuser, I decided to move the primary mirror up into the OTA. This meant cutting the bottom of the tube by 39 mm.
    I used a technique with painter's tape that my buddy employed while "chopping" the roof of his old Ford model A. Time-honoured and its works. I felt a little bad cutting this tube, for about 5 minutes.







    I shortened the tube by 39 mm, and then drilled the appropriate holes into the wall to mount the primary cell.
    Ian
    Scopes Orion XT10i f4.7 "Frosty", old Sears 6305 60mm f15 "Raquel"
    Binoculars Asahi Pentax 7x35 and 7x50, Beck Kassel 8x30 and Celestron 15x70
    Eyepieces: Leitz Periplan GF, ES68s, ES82s, TV Naglers, Meade 4000 super plossl, Nikon CFI, Olympus FK, Paracorr I, Abbe Orthos: Carl Zeiss Jena K7x (35mm), K10x (25mm)
    M110: 110 Herschel 400: 90 Comets: 2 Planets: 6

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

  11. #29
    kanadalainen's Avatar
    kanadalainen is online now HYPER GIANT
    Points: 25,934, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 83.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!First 1000 Experience Points
    Join Date
    Feb 2017
    Location
    Canada
    Posts
    2,582
    Points
    25,934
    Level
    100
    Thanks
    2,579
    Thanked 2,085x 915 Posts
    Blog Entries
    1

    Default Re: A Tasco 11TR fell into my lap..

    Centre - dotting the 11TR primary mirror

    I simply followed the method published by Gary Seronik:

    https://garyseronik.com/centre-dotti...rimary-mirror/

    I used a reinforcing circle for putting looseleaf in a binder, after locating the centre of the mirror by making a paper mockup and folding twice.



    Then I did a test fit of the cell to the rear of the scope's now-primed and shortened OTA.

    Seems to fit nicely!



    Note the overspray of white paint inside the OTA. I will fix this when I am sure the mock up is working properly.

    Stay tuned, I'm going to mock up the scope and test for function and back-focus. If I need to, I will adjust by cutting the OTA even more.
    Ian
    Scopes Orion XT10i f4.7 "Frosty", old Sears 6305 60mm f15 "Raquel"
    Binoculars Asahi Pentax 7x35 and 7x50, Beck Kassel 8x30 and Celestron 15x70
    Eyepieces: Leitz Periplan GF, ES68s, ES82s, TV Naglers, Meade 4000 super plossl, Nikon CFI, Olympus FK, Paracorr I, Abbe Orthos: Carl Zeiss Jena K7x (35mm), K10x (25mm)
    M110: 110 Herschel 400: 90 Comets: 2 Planets: 6

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

  12. #30
    kanadalainen's Avatar
    kanadalainen is online now HYPER GIANT
    Points: 25,934, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 83.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!First 1000 Experience Points
    Join Date
    Feb 2017
    Location
    Canada
    Posts
    2,582
    Points
    25,934
    Level
    100
    Thanks
    2,579
    Thanked 2,085x 915 Posts
    Blog Entries
    1

    Default Re: A Tasco 11TR fell into my lap..

    Installing the OTA's front cast iron ring and the secondary.

    Now I dug through my pile of parts (of course, set aside with assiduous care ) and found the screws to anchor the front ring. This has a marvellous effect of stiffening the entire OTA.

    Here is an image of the OTA ready to accept the Secondary mirror assembly.



    Installation of the secondary is easy-peasy.. just a couple of screws et voila.



    The beauty of the single vane secondary mount is minimization of diffraction when focused on a bright object. Planets, anyone??
    Ian
    Scopes Orion XT10i f4.7 "Frosty", old Sears 6305 60mm f15 "Raquel"
    Binoculars Asahi Pentax 7x35 and 7x50, Beck Kassel 8x30 and Celestron 15x70
    Eyepieces: Leitz Periplan GF, ES68s, ES82s, TV Naglers, Meade 4000 super plossl, Nikon CFI, Olympus FK, Paracorr I, Abbe Orthos: Carl Zeiss Jena K7x (35mm), K10x (25mm)
    M110: 110 Herschel 400: 90 Comets: 2 Planets: 6

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

 

 
Page 3 of 5 FirstFirst 12345 LastLast

Similar Threads

  1. Help! Eyepiece fell apart!
    By jbrandt in forum ETX Telescope Forum
    Replies: 4
    Last Post: 11-30-2015, 08:22 PM
  2. Laser fell apart
    By Dragonsfire in forum Telescope Accessories Forum
    Replies: 18
    Last Post: 05-18-2015, 03:46 AM
  3. Telescope Fell Over!
    By zaoxfriedy in forum Astronomy Beginners Forum
    Replies: 14
    Last Post: 02-06-2015, 01:51 PM
  4. ^%$##%$#%#$!!!!! Something fell on my mirror!
    By aatt in forum Reflector Telescope Forum
    Replies: 40
    Last Post: 03-12-2013, 01:11 AM
  5. Tasco 11TR EQ Mount
    By Matt666 in forum Australian Astronomy Forum
    Replies: 0
    Last Post: 05-02-2010, 10:17 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Powered by vBulletin® Version 4.2.0
Powered by vBulletin®
All times are GMT. The time now is 05:13 AM.