ATM

Trixie scale

Tagged Leave a Comment on Trixie scale

I got a great deal on a big mirror, and I’m building out a telescope to house it. It’s a 13” mirror, which doesn’t sound as impressive as seeing the mirror next […]

READ MORE

ATM

Carbon Fiber FAQs

Tagged Leave a Comment on Carbon Fiber FAQs

I have kicked around the idea of building Trixie in Carbon Fiber. I doubt it’ll happen (the costs are… ahem.. “astronomical”). But here are some sites with info about CF http://www.societyof … […]

READ MORE

ATM

Trixie dovetail mounting holes

Tagged , Leave a Comment on Trixie dovetail mounting holes

For the hole spacing of the for 23.75” and 19” plates, look up the DM14 and DM12 hole spacing. DP23.75 is Length 23.75” HS 23.00 1/4” 20 holes DP19 is Length 18.925” […]

READ MORE

ATM

Trixie dovetail mounting holes

Tagged , Leave a Comment on Trixie dovetail mounting holes

Further research revealed that Losmandy sells DP plates in 17.5”/19” and 23.75” lengths without the curved radius blocks. They are a little cheaper than the DC plates (which include the radius blocks) […]

READ MORE

ATM

Trixie dovetail mounting holes, answers

Tagged , Leave a Comment on Trixie dovetail mounting holes, answers

According to my research, the “HS” (”hole spacing”) for the DC11 plate is 16” and 16.5” apart. The holes are at the ends of the plate only. I believe they are 1/4”-20 […]

READ MORE

ATM

Trixie dovetail mounting holes

Tagged , Leave a Comment on Trixie dovetail mounting holes

I’m planning to use L-brackets to attach a Losmandy DC11 mounting rail to Trixie. I need to figure out: – how far apart are the holes on a DC11? – what size […]

READ MORE

ATM

Monster Design

Tagged Leave a Comment on Monster Design

http://www.unitronitalia.it/gladio.htm This may be something you can do with the Giant Mirror? Just another idea. And Where Are The Baby Pictures Dad? A

READ MORE

ATM

Trixie – Cutting the optical path through the rings

Tagged Leave a Comment on Trixie – Cutting the optical path through the rings

After taking a weekend off to celebrate the birth of our daughter (Happy Birthday, little one!), it was time to get back to the Trixie build. The next step involved putting holes […]

READ MORE

Uncategorized

Re: balancing an OTA

Tagged Leave a Comment on Re: balancing an OTA

Art Morton wrote: > BTW > > ~ I look at ~25lbs as the upper limit for the G-11 for one piece of > glass, add temperature, power supply wind, cables, finder, […]

READ MORE

ATM

Re: rough calculation of spider weight

Tagged Leave a Comment on Re: rough calculation of spider weight

Jimbo S. Harris wrote: > Hello, > > I’m trying to get a rough idea of where the balance point of my OTA is > going to lie. Can you give me […]

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