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Posts Made By: James Powell

December 17, 2005 07:43 PM Forum: Beginning Astronomy?

Zhumell 8" to 10" dobsionan ?

Posted By James Powell
I need advice. I have just entered the astronomy hobby and do not wish to make the wrong decision when I purchase my telescope. I am looking at the Zhumell dobsionan telescopes. Telescopes.com has told me that the mirror is Pyrex glass in both the 8" and the 10". I was told that the wavefront accuracy is 1/4. Both telescopes have good 2" focusers and a decent finder scope. Also, you get the laser collimator as well. Does anyone know where the mirror is made? Is this a good telescope in either size and which one should I go for if I can afford either, not considering size and weight? How does Zhumell compare to the X-Class Dobsionan telescopes?

James

December 20, 2005 08:42 PM Forum: Beginning Astronomy?

X-Class dobsionan telescopes?

Posted By James Powell
How does the X-Class telescope compare with the other brands such as Zhumell, Orion, etc. Are these telescopes made in Twain or China? I am considering the purchase of my first dobsionan telescope and need advice.

Thanks,

James

January 11, 2007 02:17 AM Forum: Eyepieces

GSO 15mm and 20mm superview 1 1/4" eyepiece

Posted By James Powell
Has anyone tried the GSO 15mm or 20mm superview eyepiece in a F5 scope?

May 3, 2007 01:30 PM Forum: Eyepieces

Orion Q70 32mm

Posted By James Powell
Could anyone please let me know how the Orion Q70 32mm eyepiece perofrms in fast scopes. I am using an 10" F5 dob.

I purchased an Eclipse 32mm 2" eyepiece from Agena but the performance was no better than the GSO 2" 30mm eyepiece that came with my telescope so I have returned it.

May 28, 2007 03:01 PM Forum: Telescope Making

Anttlers mirrors

Posted By James Powell
Has anyone used either the BK-7 or Pyrex mirrors from Anttlers?

June 5, 2007 04:19 PM Forum: Reflectors

worth going to!

Posted By James Powell
I pesently am using a 10" dob and have considered moving up to a 12" dob. However, where I live there are not any 12" dobs to compare my dob with.
Is is worth the expense to move up to a 12" dob?


June 5, 2007 07:50 PM Forum: Telescope Making

Mirrors from Anttlers.

Posted By James Powell
Has anyone used mirrors that are offered by Anttlers? They have the 12" BK-7 elliptical and parabolic that are reasonable.


September 6, 2007 06:41 PM Forum: Refractors

C102-R compared to C4-R

Posted By James Powell
There are a number of sites selling the C102-R and the C4-R.
What are if any differences?

September 10, 2007 09:57 PM Forum: Refractors

Celestron omni xlt 102 vs 120

Posted By James Powell
I am seriously considering the Celestron omni XLT102. The 120 is $100 more. Will the difference make that much difference viewing faint objects. I have been a dob user from the start and have little experience with refractors. I would like to get used to an equatorial mount and have a smaller telescope for casual viewing and possibly some astrophotography.

Please advise.

September 26, 2007 09:09 PM Forum: Refractors

Celestron OMNI XLT 120

Posted By James Powell
I just received my Celestron OMNI XLT 120. Is the declination circle supposed to move? I see a screw hole but it does not have a setscrew. I tried turning the circle but it does not move.

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