![]() |
| Every now and then I get a small project to help an ATMer. Here's Alan's JMI "Even Horizon" focuser on a 1/4" thick aluminum focuser bracket. Plenty sturdy for any application. |
![]() |
| Alan lives in Chicago, Illinois. One of my favorite cities. |
This blog contains photos, descriptions and comments about our telescopes. Please take a minute to make comments. Make suggestions and feel free to email me at densteele@dobstuff.com any time -- Dennis K6KRV (densteele@dobstuff.com)
![]() |
| I always assemble my telescopes completely so as to check for fit, finish and motion. In this case -- it's right on!! |
![]() |
| The partially assembled OTA and ready to place in the rocker box. |
![]() |
| It's easy to grab the top ring of the mirror box and lift the assembly into the rocker. A little leverage makes the job a snap. |
![]() |
| Add the "intermediate" ring. Note the washers are "up: This keeps the top-half of the struts from digging into the wood ring. |
![]() |
| Add the top half of the struts, strings, sliding counterweight and finder(s). |
![]() |
| Finally, add the top ring. I make the struts a bit "off center". this puts stress on the assembly as it lines up and creates a more rigid OTA. Note the strings as well. |
![]() |
| The mirror box, strings and mirror cover. I like to use Lemon Oil Pledge on the bearings surfaces to clean and lubricate the Ebonystar and Teflon. |