different diaganal

micky · Guest

i have the ds-2080 lnt 20087 model telescope and was wondering with all the diagnals out there what would be the best choice for better light and more clear images..i get the orion catalogs and they have different models claiming to get better light and clarity out of them...also would a 2 inch diagnal with with the reducer to 1.25 make a big difference please reply back i am a beginner thank you so much for your time

Jne_K · Site Admin Joined: 24 Sep 2003 Posts: 5221

Hi

Going to a 2" diagonal is a waste of money in terms of light transmission, since you are effectively stopping it down to a 1.25" diagonal. Also, finding such a reducer is going to be something of a problem. Save your money.

Upgrading to a better diagonal, though, is a good idea. You not only get better image brightness, you also get better image quality, since premium diagonals have optically better mirrors and componenets that are better aligned. However, doesn't make much sense to upgrade to a better diagonal unless you have the eyepieces to justify it. I would upgrade your eyepieces, first.
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micky · Guest

i have the super plossl 9.7 and 26 mm and the barlow 2x ... can u suggest what eye pieces and diaganal would be the best please..thank you for ur quick respo onse also

Jne_K · Site Admin Joined: 24 Sep 2003 Posts: 5221

Hi

Magnification-wise, you already have the bases covered. The 9.7mm plus barlow gets you up to 164x and that is plenty for an 80mm refractor. The most logical thing is to upgrade the quality of your eyepieces, then. If you want to go straight to Televues, great, but you can still notice a lot of improvement over the supplied eyepieces on that scope with the Meade Series 5000 Superplossls or the Vixen LVs. I like the LVs if you wear glasses and want the eye relief, but the Series 5000 Superplossls are excellent mid-priced eyepieces and will also get you a touch wider field of view. For a diagonal, the standard [urlhttp://www.opticsplanet.net/stellarvue-deluxe-mirror-star-1-25-inch-diagonal-d1031ed.html]Stellarvue[/url] is a good buy.
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