Would it be possible for me to use a full size tool to polish out my 6" f/8 and a MoM? I could do the figuring with a 70% tool. Just curious as its my 1st time. Regards, Sathya.

Hi Everyone, I am usually a guy who silently hangs around without posting. I am making a 6" f/8 8.5" f/6 and a 4.5" f/10 (this will be spherical for obvious reasons). These are small and slow mirrors

Hi all, I have one of Tom Noe's amazing Teleport 10's (number 11) with a beautiful Zambuto thin mirror, and it's finally time to get the mirror stripped and recoated. The mirror cell is very simple -

Hi, very cool idea! My first Foucault tester was built with Stellafane plans, they use a single razorblade that covers half the light source and the view window. That makes it slit-less or pinhole-les

It has been a while since I have been here. Too many projects diverting my attention. I am back to try and finish parabolize my 15" mirror. Mirror has a ROC of 140.8". I am spherical with no turned ed

My object is to set up a simple Foucault knife-edge test. I have my old iPhone 5 which have both of light source and camera. So, I try to put a shaver blade in front of camera. To made a fine adjustme

The following photos have been updated in the Ron’s 14.5” Zambuto in Starmaster Dob album of the zambutomirrorgroup@groups.io group. Jupiter Saturn Conjunction 12-20-2020.jpeg By: Ron Masters

I’m looking to recoated my mirror soon by sending it to Carl. Wanted to know what Carl recommends for a secondary mirror wavefront that is compatible with my Zambuto 8” f6?

I am one among untold numbers who have purchased and enjoyed their books over the years. https://www.willbell.com/ Sorry for the cross-posting, but here are more details: https://www.cloudynights.com/

Paul V. I apologize if this is a bit off-topic. I saw in your brief bio in another thread that you were acquainted with Dr Baker. How many variants of the Reflector corrector design were investigated?

Most of us are aware of the bright halo and diffraction spikes surrounding bright stars but don't realize that the percentage and distribution of light surrounding the object is considered "noise" and

When asked about his secret of staying young, Dick Clark replied, ” it’s simple. Pick your parents carefully. “ Obviously, you can’t pick your parents, otherwise Ozzie and Harriet would have had thous

I recall having seen this pdf before the move. Since the move to the new server, I no longer can find it. Did the files on the original site get migrated?

Hi all....thought I would share my experience with turned a turned edge. I have been grinding a 14" mirror from the flat to a F4.5 using the mirro-o-matic I built. The glass is shaped like a eyeball l

Hi Everyone, This is my very first post here. I started mirror making 20 years ago with a 6" f/10 19mm float glass, naturally ground by hand as it wasnt a tough task. Later on i ground an 8", 10" f/6,

From: Lonnie Robinson <Lonrobie@...> Sent: Tuesday, July 28, 2020 9:14 AM To: 'zambutomirrorgroup@...' <zambutomirrorgroup@...> Subject: Turned Down Edge Hi all, Using Carl’s machine process has vastl

Hi Looking at purchasing a primary. Found a used one. The person (seems reliable) says it is a Zambuto. They have the original Zambuto box it was shipped in but not the paperwork. 1) How can I tell if

Self-isolation has helped me find time for ATM - and to make progress on my first mirror, which I had planned to be 8”f/9. I’ve completed #320 grit on the 8” mirror, which has seemed to settle into ab

While fine grinding, the tool slipped from my hands about 1/4" onto the edge of the blank. Amateurish mistake. Spalled a few chips along the edge. Not deep but embarassing. Chips went down about 1/2"