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FW: Brent Holt, Mirror Testing Question at Knox Observers FaceBook

Forrest Erickson
 

I just got in touch with long time SMAS member.

There was some traffic on the Knoxville Observers about mirror testing which made me think of Brent Hold.
So I called him and discussed it and got his current email address
Brent does not do Facebook so I sent him screen shots which I wanted to share.
Brent says he has not observed much lately and welcomed a push to do so.
I told him about my Saturday Solar Observing at Blount Count Public Library and hope for some Star Parties soon.  This Saturday may be clear. And cold.

Lee

---------- Original Message ----------
From: FORREST ERICKSON <forresterickson@...>
To: Brent Holt <holtb4935@...>
Date: 11/14/2022 1:06 PM
Subject: Fwd: FW: Brent Holt, Mirror Testing Question at Knox Observers FaceBook


Brent,

Screen shots embedded and attached.
The chronology is not intuitive.






Lee
---------- Original Message ----------
From:
To: forresterickson@...
Date: 11/14/2022 1:02 PM
Subject: FW: Brent Holt






Forrest Erickson
Cell: 856-518-1040


-------- Original message --------
From: faithlessforrest <faithlessforrest@...>
Date: 11/13/22 9:37 PM (GMT-05:00)
To: forresterickson@...
Subject: Brent Holt





Forrest Erickson
Cell: 856-518-1040

Don Eiler
 

Folks, don't overlook collimation.  A poorly collimated scope can make a mirror look bad.  Don't ask me how I know. 

And if I remember right, short focal ratio scopes are more sensitive to collimation.  My experience was with a 6" F/5 Newtonian.  It was badly misaligned when I got it.  Really nice image now.  But I struggled mightily with collimation.

Don Eiler


On 11/14/2022 1:10 PM Forrest Erickson <forresterickson@...> wrote:


I just got in touch with long time SMAS member.

There was some traffic on the Knoxville Observers about mirror testing which made me think of Brent Hold.
So I called him and discussed it and got his current email address
Brent does not do Facebook so I sent him screen shots which I wanted to share.
Brent says he has not observed much lately and welcomed a push to do so.
I told him about my Saturday Solar Observing at Blount Count Public Library and hope for some Star Parties soon.  This Saturday may be clear. And cold.

Lee

---------- Original Message ----------
From: FORREST ERICKSON <forresterickson@...>
To: Brent Holt <holtb4935@...>
Date: 11/14/2022 1:06 PM
Subject: Fwd: FW: Brent Holt, Mirror Testing Question at Knox Observers FaceBook


Brent,

Screen shots embedded and attached.
The chronology is not intuitive.






Lee
---------- Original Message ----------
From:
To: forresterickson@...
Date: 11/14/2022 1:02 PM
Subject: FW: Brent Holt






Forrest Erickson
Cell: 856-518-1040


-------- Original message --------
From: faithlessforrest <faithlessforrest@...>
Date: 11/13/22 9:37 PM (GMT-05:00)
To: forresterickson@...
Subject: Brent Holt





Forrest Erickson
Cell: 856-518-1040

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