Hi everyone,

The 2023 Alt-Az Workshop will begin Saturday morning, October 28th, and I hope many of you will be able to tune in. The Zoom meeting links, along with the topics to be presented in each session, are shown below.

Although I never discount the possibility of technical difficulties, the plan is to livestream and record each session on YouTube for those who can't watch the presentations in real-time.

We'll have a mix of in-person and Zoom-only presentations again this year, and all will be livestreamed and recorded.

There's no registration fee, although we ask for a $5 donation to cover the cost of each bbq that in-person attendees partake in. Feel free to bring your own food if you prefer.

The Friday, October 27 bbq for in-person attendees will begin at 6:00pm at the new TMS location at 6650 N. Basin Ave, Suite F, Portland, OR.

I'm looking forward to another fascinating Workshop, and hope to see many of you there!

Howard
Chair, moderator, Zoom host, and head bottle washer

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Saturday October 28, 2023
Day 1 morning session - 9:25am to 12:30pm Pacific Time Zone (western US):
https://us06web.zoom.us/j/8810127505...opbxWpbqOo6d.1
9:25am - Welcome to Portland XVI – Howard Banich

9:30am – Making a 16 x 3/8 - inch F2.9 Thin Meniscus Mirror, and the new Ronchi Unwrap Test – Mel Bartels

10:30am – The Lateral Image Test (L.I. T.) - Bill Thomas

11:30am - The EZ Hartmann Test - Lonnie Robinson


- Lunch break -

Day 1 afternoon session 1:30pm to 5:45pm Pacific Time Zone (western US):
https://us06web.zoom.us/j/8859098833...rp8gdRHzFpWi.1
1:30pm – At the Focus Hartmann Test – Jeff Baldwin

2:30pm – Beyond Stiction & Friction - Applications of Fluid Motion Mechanics on Dobs and Other Scopes – Ed Allen

Break: 3:30pm – 3:40pm

3:45pm - SkySolve Plate Solving Finder – Dale Eason

4:45pm – The Peter Abrahams Astronomical History talk: Anguish at Yerkes: The Hitherto Untold Story of Early Grave Concerns over the 40-inch Objective - John W. Briggs


Sunday October 29, 2023
Day 2 morning session: 9:25am to 12:30pm Pacific Time Zone (western US)
https://us06web.zoom.us/j/8965735575...3YN5EcjTrykr.1
9:25am - Brief welcome back – Howard Banich

9:30am - One year of automated speckle interferometry of close binaries on the 1m PWI telescope in Chile, and the 60-inch at Mt. Wilson. Also, a report on the 0.5m PWI telescope at our local community college, and my custom L mount observatory - Russ Genet

10:30am - 24-inch Alt-Az Cassegrain - Bruce Howard

11:30am - LIGO A+ upgrade – Joe LaCour



- Lunch break -


Day 2 afternoon session: 2:00pm to 6:00pm Pacific Time Zone (western US)
https://us06web.zoom.us/j/8151403852...bhystVDWb1kn.1
2:00pm – Epoxy Putty Tools – Gavin McGrath

2:30pm – Adventures in Making a 16-inch Meniscus Mirror – Rob Brown

Break: 3:20 – 3:40

3:45pm – Radio Telescopes Upgrade to SiTech – Dan Gray

4:45pm – The Reanimation of the 36-inch Boller and Chivens – Alan Sliski

5:45pm – The Future of the Alt-Az Workshop – Howard Banich