2013-14 Stellafane Mirror Class
Session 2 held on 2013-Nov-02
by Jay Drew
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Grinding
Grinding was done in and around the pavilion mirror lab on a nice fall day.
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Grinding
In the pavilion Mirror Lab: Francis, Antoine and Read.
In the Mirror Lab |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Grinding
Jessica works at beveling her 8-inch mirror.
Jessica Bevels |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Grinding
Kenny leans into his grinding.
Kenny Grinds |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Grinding
Kris watches as Francis checks her sagitta.
Kris & Francis |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Grinding
Tamir uses weights to speed his grinding.
Tamir Grinds |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Grinding
Kris' 10-inch tool is made of pink dental stone.
It's Pink! |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Grinding
Ray and Read check their focal lengths using the reflected sun, and Jessica watches them do it.
F. L. Check |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Grinding
Ray uses his mirror as a sun ray gun, but super hero Jay seems impervious to it.
Ray Gun |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Grinding
A view of the mirror lab through an internal window.
Workshop Window |
Laps
George re-poured over an old lap, as shown below.
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Laps
George has poured a new pitch layer over his old lap. It looks whitish, which is cerium used to ensure the mirror won't stick while pressing.
A New Start |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Laps
George channels his renewed lap outside the pavilion, and Winter keeps him company.
Cutting Channels |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Laps
The fall sun warms up the black lap pretty quickly as it rests on the foundation of the McGregor Observatory.
Sun Warming |
Polishing & Figuring
Polishing & Figuring was done in the McGregor Library.
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Polishing & Figuring
The McGregor Library being used for Polishing and Figuring.
McGregor Lab |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Polishing & Figuring
Doug holds his 10-inch mirror.
Doug's 10-Inch |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Polishing & Figuring
Dave is figuring a 6-inch mirror.
Dave's 6-inch |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Polishing & Figuring
George warms his lap for a hot pressing session.
Hot Pressing |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Polishing & Figuring
Cerium Oxide is smeared over this mirror before polishing or figuring.
Cerium Smear |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Polishing & Figuring
Tamir's new lap still needs to be trimmed around the edge.
Tamir's Lap |
Mirror Class Work
A new test tunnel is being made for our off-site mirror class, and at the end of the day we packed up to move there.
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Mirror Class Work
Ray begins work on a new test tunnel.
New Test Tunnel |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Mirror Class Work
A few hours later, and progress on the new test tunnel is apparent.
Tunnel Progress |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Mirror Class Work
At the end of the day, grinding stands are loaded up for transport to our winter home in Chester.
Moving Day |
Around the Site
As always, a lot goes on besides mirror class on mirror class days, here is a sampling.
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Around the Site
A clear fall day on Saturday morning at Stellafane.
A Clear Day |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Around the Site
Jeff applies protective oil to the club's new Bridgeport mill as we prepare it for winter storage.
Jeff Protects |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Around the Site
John installs new doors on the dome we currently use for storage.
John Installs |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Around the Site
These pavers are still curing and will be installed next spring.
Engraved Waiting Pavers |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Around the Site
Kai looks at solar prominences in a PST
Kai Views |
2013-14 Stellafane Mirror Class Session 2 held on 2013-Nov-02 Around the Site
This is what Kai saw, including the tree branches in front of the sun.
PST View |
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