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Posts Made By: john welch

January 26, 2004 10:15 AM Forum: Equipment Talk

For Christopher!!

Posted By john welch

I corrected the angle and sent a diagram of the viewer in two submissions on this thread. I trust you found them.

Thanks,
John

February 3, 2004 07:03 PM Forum: Astro Binoculars

Bino Mount

Posted By john welch

Here is my solution for eliminating neck strain, vibration, and long term comfort. I've made parallelograms, chairs with attached and unattached articulating arms and even bought and modified a dentist's chair at an industrial sale. (my wife called the dudes in white coats)!
It can be mounted on a pier for sitting or standing, or on a table. It's a "Dobino"!!
I don't understand some people's reservations about a reversed view. It's only objectionable if you never try it!
Newts and refractors aren't correct views either.
There is a production model advertised in S&T that I'm sure is fine, although it doesn't appear to rotate in azimuth. If you have a copy of Astronomy, Feb 1997, there's
a step by step article for making the mount just as you see in this photo.
The "arm" is a red dot finder that makes pointing second nature. The mirror is a high quality flat purchased from American Scientific for five dollars.
And NO, the mirror doesn't degrade performance! If a mortal can detect the difference it's only in the mind beforehand.
I've used several binos on this mount. Try it!!
Good times!
John

February 16, 2004 06:19 PM Forum: Eyepieces

UO orthos

Posted By john welch

Hey Floyd !

Can you estimate the eyerelief on your UO orthos?

I owned some many years ago and can't remember.
I should have kept them instead of my American Motors Pacer!! Tee Hee...

Thanks !!
John

February 16, 2004 07:42 PM Forum: Equipment Talk

The Eyes don't have it!

Posted By john welch

Here's a question for eye care specialists or ...? For several years I've used glasses for viewing that were intentionally over corrected (myopia) and perfectly corrected for slight astigmatism by a cooperative optician. They allow very crisp naked eye and through the scope viewing. They are very old large lensed style and are scratched, etc.
I have made several attempts to have made small frames with and without bifocal and transition lenses. None of them correct the astigmatism completely.
So, being the do it yourself jerk I am, I got a duplicate pair to the large framed ones and ground them down in diameter and installed them in caps for average size eyepieces. They work fine this way but they won't fit all the eyepieces I've collected over the years.
Yes, I do wear contacts but they just aren't the same as the overcorrected glasses.
No, I won't have surgery based on two of my friends experience at the eyepiece.
One of the opticians said that it's rarer than a hen's tooth to find a human eye that isn't slightly astigmatic or otherwise distorted. I wonder if nearly all of us wouldn't benefit from some kind of correction.

Life is heck.....what's one to do?

John

February 16, 2004 09:33 PM Forum: Deep Sky Observing

The Media

Posted By john welch

I can't believe the only media that announced Jay McNeil's M78 find was the BBC. Not S&T, not Discovery, not anyone yet that I'm aware of. If some others finally report, it is certainly belated. Booooo!!!
Someone please correct me!

John

February 19, 2004 11:56 PM Forum: Telescope Making

Galileo Mirros from India

Posted By john welch

Has anyone had experience with Galileo of India plate glass mirrors? They seem very helpful via e-mail......

Thanks,
John

February 24, 2004 06:22 PM Forum: Equipment Talk

Coronado Solar scope

Posted By john welch

Any word on the new PST scope?

Thanks,
John

March 27, 2004 07:58 AM Forum: Off Topic Discussions

Big Bear Lake fire?

Posted By john welch

Big Bear Lake fire? Someone told me there may be a fire in the San Bernadino mountains. I worried about the RTMC this year. Anyone know?................

April 20, 2004 08:33 AM Forum: Star Parties

RTMC online

Posted By john welch

Has anyone been able to call-up the site for RTMC recently?
It's been down for several days. (I'd like to register with paypal).

Thanks,
John

May 19, 2004 11:12 PM Forum: Refractors

Apogee 80mm widestar

Posted By john welch

Any comments about the 80mm Apogee WideStar?

:S
John