The ATM session on Saturday was lightly attended, but good work was done. I got some polishing time in on my son's 8" mirror. At 22 hours of polishing (machine), it is close to being what I consider polished out. For all of you who have made mirrors, yes, this is a long time to polish, but it is my first attempt at polishing exclusively by machine. I believe that I was not using enough weight for the majority of the time. Since doubling the weight on the tool, from 5 to 10 lbs., the progress has sped up some. After working the mirror for another hour this morning, the mirror is nearly polished out. Perhaps another 2 hours with Cerium oxide, then I'll cut over to rouge for a final hour of polish. Then I'll be on to figuring; yippee! Jeff brought his new ProtoStar secondary mirror, and we siliconed it to the telescope's spider hub. Of course this was after removing the stock mirror from the hub. Sometime, ask Jeff about his new technique for cleaning a secondary. Somewhere there is a video showing this. Josh brought along his newly built pulse width modulated circuit with which he is controlling the brightness of the laser for his bath interferometer. It works really well. He modified the original circuit that we have been using and made the PCB layout much more compact. I was able to show him a toner transfer technique which works very well to transfer laser jet toner onto a copper clad board. The toner acts as an etchant resist and is a good way for DIYers to make PCBs. He ended up with a couple of nice looking and compact boards. He populated one with components and applied power, and, sure enough, it worked! Hope to see you next time! Mat This message and any attachments are solely for the use of intended recipients. The information contained herein may include trade secrets, protected health or personal information, privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you are not an intended recipient, you are hereby notified that you received this email in error, and that any review, dissemination, distribution or copying of this email and any attachment is strictly prohibited. If you have received this email in error, please contact the sender and delete the message and any attachment from your system. Thank you for your cooperation
Mat, Thanks for keeping us informed on this -- I much appreciate hearing the latest. I hope to visit with a project making a dew zapper for my 12-inch sometime before cold weather. Best wishes, Joe ________________________________ From: "Hutchings, Mat" <mat.hutchings@siemens.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Monday, June 24, 2013 12:43 PM Subject: [Utah-astronomy] ATM session report The ATM session on Saturday was lightly attended, but good work was done. I got some polishing time in on my son's 8" mirror. At 22 hours of polishing (machine), it is close to being what I consider polished out. For all of you who have made mirrors, yes, this is a long time to polish, but it is my first attempt at polishing exclusively by machine. I believe that I was not using enough weight for the majority of the time. Since doubling the weight on the tool, from 5 to 10 lbs., the progress has sped up some. After working the mirror for another hour this morning, the mirror is nearly polished out. Perhaps another 2 hours with Cerium oxide, then I'll cut over to rouge for a final hour of polish. Then I'll be on to figuring; yippee! Jeff brought his new ProtoStar secondary mirror, and we siliconed it to the telescope's spider hub. Of course this was after removing the stock mirror from the hub. Sometime, ask Jeff about his new technique for cleaning a secondary. Somewhere there is a video showing this. Josh brought along his newly built pulse width modulated circuit with which he is controlling the brightness of the laser for his bath interferometer. It works really well. He modified the original circuit that we have been using and made the PCB layout much more compact. I was able to show him a toner transfer technique which works very well to transfer laser jet toner onto a copper clad board. The toner acts as an etchant resist and is a good way for DIYers to make PCBs. He ended up with a couple of nice looking and compact boards. He populated one with components and applied power, and, sure enough, it worked! Hope to see you next time! Mat This message and any attachments are solely for the use of intended recipients. The information contained herein may include trade secrets, protected health or personal information, privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you are not an intended recipient, you are hereby notified that you received this email in error, and that any review, dissemination, distribution or copying of this email and any attachment is strictly prohibited. If you have received this email in error, please contact the sender and delete the message and any attachment from your system. Thank you for your cooperation _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Send messages to the list to Utah-Astronomy@mailman.xmission.com The Utah-Astronomy mailing list is not affiliated with any astronomy club. To unsubscribe go to: http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Then enter your email address in the space provided and click on "Unsubscribe or edit options".
Hi Joe; Would love to have you join us and put together a dew zapper. I have been very happy with the one that I made. Of course I learned a thing or two after making one and using it over the winter, so I am sure that you will end up with a nicer one than what I use. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Monday, June 24, 2013 4:48 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] ATM session report Mat, Thanks for keeping us informed on this -- I much appreciate hearing the latest. I hope to visit with a project making a dew zapper for my 12-inch sometime before cold weather. Best wishes, Joe This message and any attachments are solely for the use of intended recipients. The information contained herein may include trade secrets, protected health or personal information, privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you are not an intended recipient, you are hereby notified that you received this email in error, and that any review, dissemination, distribution or copying of this email and any attachment is strictly prohibited. If you have received this email in error, please contact the sender and delete the message and any attachment from your system. Thank you for your cooperation
Thanks, Mat! -- Joe ________________________________ From: "Hutchings, Mat" <mat.hutchings@siemens.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Monday, June 24, 2013 3:35 PM Subject: Re: [Utah-astronomy] ATM session report Hi Joe; Would love to have you join us and put together a dew zapper. I have been very happy with the one that I made. Of course I learned a thing or two after making one and using it over the winter, so I am sure that you will end up with a nicer one than what I use. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Monday, June 24, 2013 4:48 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] ATM session report Mat, Thanks for keeping us informed on this -- I much appreciate hearing the latest. I hope to visit with a project making a dew zapper for my 12-inch sometime before cold weather. Best wishes, Joe This message and any attachments are solely for the use of intended recipients. The information contained herein may include trade secrets, protected health or personal information, privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you are not an intended recipient, you are hereby notified that you received this email in error, and that any review, dissemination, distribution or copying of this email and any attachment is strictly prohibited. If you have received this email in error, please contact the sender and delete the message and any attachment from your system. Thank you for your cooperation _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Send messages to the list to Utah-Astronomy@mailman.xmission.com The Utah-Astronomy mailing list is not affiliated with any astronomy club. To unsubscribe go to: http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Then enter your email address in the space provided and click on "Unsubscribe or edit options".
participants (2)
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Hutchings, Mat -
Joe Bauman