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Posts Made By: Ed York

August 16, 2004 06:39 PM Forum: Telescope Making

Mirror Specs

Posted By Ed York

Mark Harry finished up my 8" f4.9 mirror and sent it to the coaters!

He sent me these specs, are they good? wink

Specs are 1/14th wavefront error PV, .97 Strehl, and average RTA of about .5

Ed

Excited about my scope upgrade - can you tell?

August 18, 2004 06:12 PM Forum: Pictures of Me and My Telescope and........

Too Sexy!

Posted By Ed York

First light on a rework!

- See like a 12, Carry like an 8!

September 14, 2004 12:41 PM Forum: Solar System Observing

Planet Coordinates

Posted By Ed York

What is a good place online to get the coordinates of planets (RA & Dec)?

Thanks,
Ed

September 21, 2004 07:06 PM Forum: Deep Sky Observing

M102

Posted By Ed York

As I close in on the end of the Messier list, I have 101 down, 8 to go. Hey wait that's only 109.

Can someone tell me what happened to 102?

Ed

September 22, 2004 09:20 AM Forum: Deep Sky Observing

Tips for the Horse Head

Posted By Ed York

Anyone have any tips for the best viewing of M78?

How dark of a sky?

What is the minimum size Newtonian I can get away with?

How dark do the skies need to be?

Ed

September 26, 2004 10:12 AM Forum: Telescope Making

Re: Once and for all..........what mirror coating?

Posted By Ed York

I had a guy that does premium mirrors explain to me the mechanics of why not enhanced. I would screw it up if I explained the whole thing, but he said something along the lines of the extra brightness seems to have more impact on the light scatter (emphasizes the imperfections - no mirror is perfect) so what you get in extra light is offset by a reduction in contrast. Plus for what little you might get doesn't justify the expense.

Ed

October 13, 2004 09:40 AM Forum: Politics

Re: the real appeal of GWB

Posted By Ed York

Nils,

The part that you cut and pasted, did that have a copyright?

Ed

October 26, 2004 08:47 AM Forum: Telescope Making

Spacers vs Extension Tube

Posted By Ed York

Recently I tweaked my scope including swapping out the focuser. I did not swap tube, so to keep the same location, I had to add spacers to make up for the shorter focuser. Recently I had the thought that I could remove the spacers and use an extension tube (1/5" either way). The extension tube has a filter thread (2") so I would not have to swap the filter if I swapped EP's and by removing the extension tube, I have instant in travel for photography. I can't really think of any upside to the spacers, other then the cost of sizing up filters (which now means they can be used on my 2" Ep's as well).

So should I go with Spacers or the Extension Tube.

Thanks,
Ed


October 27, 2004 02:22 PM Forum: Eyepieces

Meade Series 5000

Posted By Ed York

Does anyone know when Meade's new Series 5000 line is supposed to be available?

Ed

November 3, 2004 07:28 AM Forum: Solar System Observing

Venus & Jupiter

Posted By Ed York

Venus and Jupiter are to be particularly close for the next 2 mornings. Anyone have plans on viewing/photos?

Ed