ATM / Gear / Telescope

Trixie rebuild 2011, day 5.1 – clamps!

Tagged Leave a Comment on Trixie rebuild 2011, day 5.1 – clamps!

I woke up this morning at 8am, ready to start cutting out clamps. I decided to recycle some wood that was once a part of the back porch of the house, because […]

READ MORE

ATM / Gear / Telescope

Trixie rebuild, day 4 – starting to take shape

Tagged Leave a Comment on Trixie rebuild, day 4 – starting to take shape

With the new “rake” and “splay” angles calculated, I cut out a 30°rotation jig, and was able to bang out another prototype when I got home. I should have spent a couple […]

READ MORE

ATM / Gear / Telescope

Trixie rebuild 2011, day 3a – minor math error

Tagged Leave a Comment on Trixie rebuild 2011, day 3a – minor math error

I just realized that I need to account for another dimension when constructing the pole seats; that is, they need to be “splayed” to the sides to reach the opposing corners of […]

READ MORE

ATM / Gear / Telescope

Trixie 2011 rebuild, day 3 – prototype shows promise

Tagged Leave a Comment on Trixie 2011 rebuild, day 3 – prototype shows promise

I spent some time today figuring out what would be necessary to create the pole seats. I landed on the “dual seat, split lengthwise, horizontal through-bolt to clamp” style (as opposed to […]

READ MORE

ATM / Gear / Telescope

Trixie 2011 rebuild, day 2 – testing pole seats

Tagged 1 Comment on Trixie 2011 rebuild, day 2 – testing pole seats

I learned how to set up the drill press for beveled cuts. I need to remember to add sacrificial pieces under the work when doing bevels. Lessons learned. The nice thing is […]

READ MORE

ATM / Telescope

Trixie Rebuild 2011 – a new start

Tagged Leave a Comment on Trixie Rebuild 2011 – a new start

Trixie has been sitting in the corner of the observatory, gathering dust, for almost 3 years. I first built the scope up during the spring and summer of 2008, but the scope […]

READ MORE

ATM

Trixie rebuild — Design ideas

Tagged Leave a Comment on Trixie rebuild — Design ideas

Trixie definitely needs to be rebuilt. The 3-strut system is not working. So I am going to rebuild and try to fix two main problems. 1) flexure — replace strings with struts […]

READ MORE

General / Maintenance / Techniques

Trixie in collimation

Tagged , , Leave a Comment on Trixie in collimation

Ah, maintenance. Things you do on sunny days and cloudy nights. I spent some time getting Trixie in collimation today. It came together pretty well with the Catseye. It’s clear that the […]

READ MORE

ATM

Trixie’s Last Stand

Tagged Leave a Comment on Trixie’s Last Stand

Trixie is listed on Astromart right now, probably won’t sell; who wants a project scope? I think once the dust settles from the new mount purchase, and I get my photography back […]

READ MORE

ATM / General / Maintenance / Optics

Trixie post-collimation

Tagged , Leave a Comment on Trixie post-collimation

I spent some time this afternoon tuning Trixie. The collimation job is a but tougher with the open-frame scope; each turnbuckle is a collimation adjustment point. It took a lot of tweaking […]

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