Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

stargazine_ep14_banner.thumb.jpg.27eb9b06c9c8a1fe5ac3bae21c92743b.jpg

Alan64

Members
  • Content Count

    1,647
  • Joined

  • Last visited

Everything posted by Alan64

  1. "Dust" of steel, to bolster the J-B Weld, and thereby the extensions to the tube...
  2. I had forgotten that recesses into the cell had to be made, and for each mounting-hole extension. Those are now done... Now I may J-B Weld the extensions onto the tube...
  3. A home-repair/replacement project reared its ugly head... ...hence a delay, but not for long. I decided to go with a two-handle for the kitchen this time round. Plumbing is yet another of my specialties. The optical-tube was masked off... ...then glossed for the flocking... I may now J-B Weld the primary-cell's mounting-hole extensions onto the tube...
  4. I had no trouble with this 70mm f/13 achromat's tube... ...nor with this focusser's drawtube... Come again?
  5. I wouldn't say better; easier, rather. Unless of course there'd be a pressing need to remove it in future.
  6. I finally got round to removing the bulk of that sooty black paint lining the optical-tube. It was a right good finish, wonderfully flat and of a deepest black, but the interior must be glossed, then flocked...
  7. The lamination of the extensions with bronze, and with J-B Weld steel-reinforced epoxy(made in Texas)... A clamp of oak, hard-felt and wax-paper... Double- and single-sided clear-tapes were also utilised, and to prevent shifting of the components... <tick-tock, tick-tock, tick-tock>
  8. The tube's substrates for the extensions were stripped of paint, roughened in the process, and to be scored... From my humble sheet of phosphor-bronze, three sheetlets... ...which were then sanded with 80-grit paper and scored on one side...
  9. This is only a test-fitting, and to illustrate precisely what I'm after...
  10. The mounting-hole extensions were given a final shaping, sanding with 80-grit paper, and were then scored on both sides; one side for epoxying to the optical-tube, and the other for the epoxying of the phosphor-bronze sheet thereto...
  11. Why, they appear as soda- or beer-can pop-tabs; splendid. In the end, those will be overlaid with a "veneer" of phosphor-bronze.
  12. The point of no return... I only need this much of an adjustment for each. Unfortunately the tube doesn't extend out quite far enough... Just three wee pieces, 1/2" wide, 7/8" in length... Incidentally, throughout the spring and summer: wet, wet, wet. However, within the last three weeks to a month, a drought, and nary an advantage have I taken of it. I had begun working on this telescope just before the drought began. There's no rhyme nor reason where there's an obsession, and a magnificent one at that.
  13. It's only about 130mm in diameter, but I only need three small pieces from it for this telescope.
  14. Before I secure the mirror into its cell, I need to sort out what I'm going to do to effect a tilting solution for the cell. I have to cut those stainless-steel mounting screws to just the right length, so as not to touch the mirror's edge when battened down. That's going to hinge upon what I do about the mounting holes... This is the steel-plate that I removed from the primary-cell of my 127mm "Bird Jones", and in favour of a far better solution... It's of hot-rolled steel, and rather thin. I will be using it for the tilting solution of this one's primary-cell...
  15. The mirror is safely nestled under and within a canopy of gift-tissue, and until the paint cures... Isn't it absolutely and utterly precious?
  16. I do hope you find the new, different one satisfactory. Incidentally, that image I posted is the objective of my Meade "Polaris" 90/900.
  17. There should be only two reflective surfaces within the optical-tube of a Newtonian: the aluminised surfaces of the primary and secondary mirrors. If you want to see glory. Otherwise, carry on...
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.