On June 29, 2022, David Giesen from Photonic Cleaning Technologies was a special guest on AstroWorld!  He gave us live demonstration of his product called Red First Contact.  I was quite amazed  at the way the polymer cheaned optics!  If you wish to try it out , the website is https://www.photoniccleaning.com/ And, if you order by July 25, 2022 you will get a 15% discount by entering the code astroimage at checkout. 

During the conversation, some questions remained missed in the chat.  David was gracious enough to answer these questions. Click here to see the Q&A

Thanks David for being a great guest!