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Posts Made By: joel falk

August 3, 2006 04:48 PM Forum: Eyepieces

Impact of Paracorr On Eyepiece Exit pupil

Posted By joel falk
Does the Paracorr reduce the exit pupil of an eyepiece by a factor of 1.15?

Example: A 30mm eyepiece in an f/4.3 scope gives an exit pupil of 6.98mm. Does the use of the Paracorr reduce that to 6.07mm.

Thanks,

Joel Falk in Kansas

August 6, 2006 10:22 PM Forum: CCD Imaging and Processing/Solar System

Re: Jupiter August 5, 2006

Posted By joel falk
Eric,

Nice shot with lots of detail.

Thanks for sharing.

Joel Falk in Kansas

September 11, 2006 09:22 AM Forum: Pictures of Me and My Telescope and........

Re: 10" Newtonian.....Finally Finished

Posted By joel falk
David,

Great looking scope!! With a Stevens mirror I am sure it will be a great performer!!!

Enjoy!

February 8, 2007 02:56 AM Forum: Eyepieces

Re: need some new eyepieces

Posted By joel falk
Look at the Hyperion line. They have a 21mm you might like. They also have a 17mm or a 13mm they may be fit you needs.

Good Luck.

May 12, 2007 09:28 PM Forum: Reflectors

14.5" AstroSky with Stevens Optics to be Shipped

Posted By joel falk
Yes, my 14.5" AstroSky with Stevens Optics, AN and GOTO with traching will be shipped on 5/14/07.

You can see pictures at the following site:

http://astrosky.homestead.com/May2007pictures.html

Any comments?

Thanks!


March 16, 2006 08:47 AM Forum: CCD Imaging and Processing/Solar System

Alpine valley/Cassini/Callipus

Posted By joel falk
Looks like your looking for a landing spot!!!
Keep up the good work!

Joel Falk in Kansas

March 18, 2006 08:56 AM Forum: Deep Sky Observing

THE UNIVERSE

Posted By joel falk
Over 35 years ago I got into a discussion with an astronomer regarding the interactions of stars with
the interstellar medium. While I cannot repeat his language in this forum, I can say he was not impressed with the idea. So much for the experts!

Joel Falk in Kansas

March 21, 2006 04:42 AM Forum: Pet Pics

The real puppy pictures

Posted By joel falk
Here is more!








March 21, 2006 11:15 AM Forum: Beginning Astronomy?

What is CONUS ?

Posted By joel falk
Hi Al,

CONUS means the continental US(i.e., the 48 states).

Clear Skies,

Joel Falk in Kansas

March 27, 2006 10:30 AM Forum: CCD Imaging and Processing/Solar System

Jupiter, March 26

Posted By joel falk
All I can say is WOW!!!

Great detail!! I assume you used your new 13.1" scope. Continue the great work.

Maybe you con get someone to use your pictures in a book.

Goog Luck and Clear Skies,

Joel Falk in Kansas, USA

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