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Posts Made By: Alex McConahay

November 3, 2005 01:24 AM Forum: Equipment Talk

Where to find a 12" extension for G-11 ?

Posted By Alex McConahay
Besides the classifieds here, Have you tried Anacortes (link at the big logo on this page)?

Alex

November 5, 2005 03:41 PM Forum: Refractors

Meade AR 55 6 inch vs. 5 inch achromat views?

Posted By Alex McConahay
a 5 inch refractor?

As a "grab and go?"

Alex

November 6, 2005 03:41 PM Forum: Landscape Photography

Re: Digital Photography Advice

Posted By Alex McConahay
Sandy,

I suspect you did not look too hard at the photo that I attached to my post.

If you are using a digital camera to make art, then you are allowed to change reality.

Alex

November 9, 2005 03:00 PM Forum: Equipment Talk

H Highstone is gone

Posted By Alex McConahay
What did I miss?

What happened?

Alex

November 10, 2005 02:38 PM Forum: Beginning Astronomy?

Tech-challenged inserting photos

Posted By Alex McConahay
Practically speaking, that means--"tell me where the image is on your hard drive."

Assuming you have loaded an image of the scope in your computer, just use the "browse" feature on that screen to go click on the image.

Alex

November 11, 2005 12:53 AM Forum: CCD Imaging and Processing/Deep Sky

Lens Adaptor

Posted By Alex McConahay
I believe there is--but it is on the order of $150. Available on the internet from Japan.

Go to google.

Alex

November 11, 2005 02:45 AM Forum: Beginning Astronomy?

Working with Star Charts

Posted By Alex McConahay
And when I have difficulty, I even hold over my head.

Alex

November 13, 2005 05:22 AM Forum: Reflectors

off-axis mask

Posted By Alex McConahay
I remember an RTMC panel discussion where the "off axis mask is sharper" question was asked of a group of very famous mirror makers. (It was eight (?) years ago, and I cannot remember any names.) Each of them said it would not improve the view on a well made mirror. It may mean you are looking at a smaller swection of a bad mirror--and thus avoiding the bad part--but it would not improve a well made mirror.

But, considering the cost--try it and see.

Aex

November 13, 2005 11:14 PM Forum: Film Astrophotography - Imaging and Processing

guiding fratio

Posted By Alex McConahay
There was a thread on this some time ago in this Forum.

It came down to: (depending on whether to are using an autoguider or not). With autoguider, you can use shorter. Witout an autoguider, try for the longer than imaging. Whether you use separate scope, or get the extrafocal length through barlows, etc, does not matter.

Alex

November 14, 2005 12:56 AM Forum: Equipment Talk

Meade 10" SCT OTA Weight??

Posted By Alex McConahay
The heavy tripod will help, but the head itself is not too strong.

By the way, Celestron says the 9.25 fits on a CG-5....And the CG-5 is similar to the LXD 55, in my opinion.

I think it might work--but it will be taxed to max.

I think you should plan for more.

Alex

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