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Posts Made By: Michael Tencza

September 17, 2007 07:25 PM Forum: Refractors

Favorite Grab and Go Refractors

Posted By Michael Tencza
I would like to survey the group as I am considering getting one to compliment my 120mm f/1000mm. Your comments are appreciated.

October 8, 2007 07:55 PM Forum: Beginning Astronomy?

Expectations for Resolution

Posted By Michael Tencza
Often when rating telescopes the reviewers will report how well certain double stars are split. Since this is not new I was wondering if someone had a handle on exactly what is to be expected from different sized apertures. I have a 120mm refractor that can split the double-double in Lyra very well. This is likely the norm for a refractor of this size but it would be nice to know what to expect from different telescopes as this would make buying decisions easier.

November 7, 2007 05:42 PM Forum: Refractors

Aperture Masks

Posted By Michael Tencza
I would like to experiment with masking my 120mm, focal length 1000mm achromat. Any help or experiences would be welcome.

November 29, 2007 03:45 PM Forum: Equipment Talk

Mars Filters

Posted By Michael Tencza
Before I buy, I'd like to know what the consensus is for filters useful for viewing Mars. I am using a Megrez II 80mm FD (f/6.9).

December 5, 2007 01:57 PM Forum: Beginning Astronomy?

How to Determine Refractor FOV

Posted By Michael Tencza
I know how to calculate the FOV for an eyepiece but every so often I see a written specification for a telescope for a maximum FOV. How is this determined? By the eyepiece calculation I get 4.95 degrees with my Paragon 40mm in my 80mm f/550mm refractor. Am I actually seeing this wide a FOV or something less?

December 6, 2007 11:57 PM Forum: Eyepieces

2.8x Klee Vignettes TV Plossls?

Posted By Michael Tencza
No big deal but I never expected to get vignetting with a plossl in a barlow, yet that's what I got. Are these barlow's only made for orthoscopics or am I living wrong?

December 12, 2007 04:04 PM Forum: Reflectors

Maximum Sized Catadioptric on an Orion Astroview

Posted By Michael Tencza
I am interested in purchasing a Catadioptric Telescope for use on an Astroview Mount. Portability is a consideration but I mainly want it to compliment my 80mm apo to get more detailed views of planets and see more and fainter DSOs. Astrophotography is not a consideration and modification of the mount to attach it would be no problem. So, what is the largest and best unit that I can mount on the Astroview for visual use. All advice is welcome.

December 20, 2007 09:11 PM Forum: Equipment Talk

Missing Compression Ring from a 2.5x Powermate

Posted By Michael Tencza
I would like to replace the compression ring in my 2.5x powermate. Does anyone know where to get one?

February 27, 2008 08:48 PM Forum: Eyepieces

1.25" 32mm Erfle vs. Plossl

Posted By Michael Tencza
I noticed a 1.25" 32mm Erfle in the eyepiece ads. It is my understanding that a 32mm Plossl shows almost the entire FOV that can be seen with a 1.25" eyepiece due to its physical constraints. So, is there any other advantage with the Erfle?

March 10, 2008 12:36 PM Forum: Reflectors

Celestron 6" XLT

Posted By Michael Tencza
This is a great size scope for my needs right now but I can't find any reviews. Does anyone have any experience with these?

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