Image of the day

Captured by
Erwin Forbragd

Horsehead Nebula

About Astromart

My Account

New to Astromart?

Register an account...

Need Help?

Posts Made By: Christopher Wilson

August 20, 2002 05:44 PM Forum: Eyepieces

26mm Nagler Type V

Posted By Christopher Wilson
This eyepiece sounds awfully tempting. Since they are so new, I was wondering if anyone has purchase one and what kind of performance they are getting from it?

September 19, 2002 02:04 PM Forum: Eyepieces

Field of View for Panning

Posted By Christopher Wilson
I have used an eyepiece on my scope that provided me with a 2.2 degree fov. I found this sufficient for easily locating objects (I have no computer). Do to off axis degradation, I am considering moving to an eyepiece with a little higher power, but the fov will only be 1.75 degrees.

I would be interested to know whether you feel that this will be adequate for easily locating objects. Because the 2.2 degrees was adequate, I have not used a finder scope.

January 17, 2003 02:01 PM Forum: Eyepieces

Future Radians

Posted By Christopher Wilson
Does anyone know if there are plans to extend the Radian line of eyepieces. Specifically, I was hoping they would come out with a 16mm. I know, the naglers have a 16mm and 17mm, but would like something between the 14mm and 18mm Radian.

February 3, 2003 07:36 PM Forum: Telescope Making

mike spooner

Posted By Christopher Wilson
I have read a lot about Mike Spooner mirrors, and am interested in purchasing one. Have not been successful in finding out how to contact him on the internet. Does anyone know how I can reach him?

February 7, 2003 06:07 PM Forum: Eyepieces

24mm Pan vs 21mm SMC XL

Posted By Christopher Wilson
Has anyone done a comparison between these two eyepieces. Principal interest is light transmission and off axis sharpness. Appreciate any assistance you can give.

February 27, 2003 06:16 PM Forum: Telescope Making

newtonian focal plane

Posted By Christopher Wilson
Does the eyepiece on a newtonian scope normally focus on the contracting focal plane (ahead of focus) or on the expanding focal plane (behind focus)?

Thanks in advance

March 3, 2003 01:50 PM Forum: Telescope Making

Fully illuminated fov

Posted By Christopher Wilson
I have a 2.1" secondary that provides a 1/2" fully illuminated fov. If you can still not experience much vignetting with an 80% illuminated fov, does this mean that the maximum field stop I can effectively us is .625" or 15.9mm? I not, please explain the concept of fully illuminated fov.

Thanks

March 25, 2003 05:48 PM Forum: Telescope Making

altitude gauge

Posted By Christopher Wilson
I have a homebuilt dobsonian scope that I purchased. Am thinking about putting setting circles on it to help locate items. Does anyone know how I can make an accurate altitude gauge or where I might find some instructions on this? An azimuth gauge is not so difficult, but can no figure out the specific dimension for the altitude.

Thanks

August 20, 2002 05:38 PM Forum: Eyepieces

26mm Nagler- Needs Visual Paracorr?

Posted By Christopher Wilson
Are you aware of anyone who has the 26mm and what kind of perfomance they are getting?

October 4, 2002 05:07 PM Forum: APM

New TMB 115/805

Posted By Christopher Wilson
How can I find out more about this scope. Have not been able to locate it elsewhere on the web.

Thanks,

Chris

Funding Member

Sponsors


View all sponsors

Search