Great video. I especially liked the tip about using a couple of extra washers to center the spider. My telescope is sporting two extra washers. Great tip. Thank you!
Close but I think you're a decade off. The proof is at 5:24. In 1977 if you bought a TV it didn't have a square screen like a monitor. That's 1980s I think. Just an opinion. Could be wrong.
Thanks for the upload... I don't have a laser collimator yet so this was very useful. Also well explained and when you understand the concept you can collimator better.
What he failed to mention or make very clear after dropping the secondary mirror assembly down the 'OTA' or 'Optical Tube Assembly', was; "This will likely lead to primary mirror damage!", "Do not let this happen.", "Do this step in a horizontal or front/downward angle." Yes he does mention a caution warning.
I think those crosshairs are from the spider. That cross section at the top of the optical tube. This is normal for Newtonian telescopes. You'll see them if the image is out of focus, but they will go away once you focus the image.
In 1977 a digital lcd watch cost around $2k. Now they're a buck or two. That was when a dollar actually had some value still too. Crazy expensive technology. Laser collimator...oh God. Just yesterday I called a guy about a used orion 6 inch reflector telescope that's around 20 yrs old. Asked about a collimator and he said, "you do it manually there's a procedure in the instructions". That was all I had to hear...click.
Well technically that area is not going to be used. But yeah, razor blade and telescope mirror are two words that should never be in the same sentence 😂
