ATM

ATM: varnish – lessons learned

Tagged Leave a Comment on ATM: varnish – lessons learned

The spot/notch in the wood shown in the image is a reference index precision marker….. isn’t it? I can live with it. I had to run the router in 3 passes per […]

READ MORE

Astro knowledge / ATM

ATM dreams

Tagged , Leave a Comment on ATM dreams

I also collected all of the ATM photos into one place. I need to crop and resize, but I’ll have a decent record of the process. I’ve really enjoyed it. It makes […]

READ MORE

ATM

Trixie – dovetail mounting holes

Tagged Leave a Comment on Trixie – dovetail mounting holes

I need to do final balance measurements, but I think that I’m going to need 2 DP plates (I don’t need radius blocks) that are 17.5” long. Need to figure out how […]

READ MORE

ATM

Trixie – really coming together

Tagged Leave a Comment on Trixie – really coming together

I got a small amount of ATM time this weekend. It was enough to round off the edges of some of the wood pieces that I need to handle, make a much-needed […]

READ MORE

ATM

Trixie Construction photos

Tagged Leave a Comment on Trixie Construction photos

Now that the woodcutting is done, I moved on to varnish. Varnish turns out to be a bit tricky to work with. Bugs and bubbles are two enemies that I did not […]

READ MORE

ATM

Trixie – woodcutting complete and hardware test-fit

Tagged Leave a Comment on Trixie – woodcutting complete and hardware test-fit

I was so close to being finished with the hardware installation that I made sure I didn’t skip a week this time, despite 2 birthdays this week (Happy Birthday to me and […]

READ MORE

ATM / Observing Reports

Trixie – all coming together

Tagged Leave a Comment on Trixie – all coming together

The tube inserts arrived yesterday, so I now have all the parts I need to put the scope together. My only fear is that I’ll mis-attach the focuser board. Everything else will […]

READ MORE

ATM

Trixie – more cutting and splicing over the weekend

Tagged Leave a Comment on Trixie – more cutting and splicing over the weekend

The spider and secondary holder turned up on Friday. It’s a *big* secondary holder. All of my previous ones have been “glue to the back” style, this is a “mirror goes inside” […]

READ MORE

ATM

Trixie – cutting the vents and test-fitting the hardware

Tagged Leave a Comment on Trixie – cutting the vents and test-fitting the hardware

It was another couple of weeks before I could get back to the project. I thought about doing circular holes for the vents, but decided to stick with the design, and laid […]

READ MORE

ATM

Trixie – light shroud for mirror box

Tagged Leave a Comment on Trixie – light shroud for mirror box

source for Kydex Will probably need 18”x50” to cover the mirror box of the 13”. They sell 24”x60” for $25.

READ MORE

Techniques

Polar Alignment Calculations

Tagged Leave a Comment on Polar Alignment Calculations

Here’s a page that derives Polar Alignment Calculations. (update 5/2020: the original site is gone, so I found the text on Wayback and am inserting it below. This is by the original […]

READ MORE

Gear / Observatory / Telescope

Special Guest Star takes the mount at Hilltop O

Tagged , Leave a Comment on Special Guest Star takes the mount at Hilltop O

The Astro Jedi needed somewhere to store his light sab—- I mean, bucket, and I was only too happy to accommodate him. I have decided that I need to come to a […]

READ MORE

General / Maintenance / Observatory

Dome shutter is motorized again!

Tagged Leave a Comment on Dome shutter is motorized again!

I finally decided to bite the bullet and fix the shutter motor. Things went sideways last winter, and I’ve been opening the shutter manually (and tying it shut with rope, so we […]

READ MORE

ATM

Trixie 2017 – tube mods

Tagged Leave a Comment on Trixie 2017 – tube mods

I finally got around to cutting the MTA-UTA tubes to length; the only eyepiece that would come to focus with the focuser spacer in place is the Televue 55mm Plossl. If I […]

READ MORE