Re: [MeadeUncensored] Starbright XLT vs. UHTC
- In <bnp5nt+vj85@...>, on 10/29/03
at 07:51 PM, "Serg Kostrov" <sergeykostrov@...> said:
>A couple of days ago Mike Hegedus initiated discussion about[snip]
>StarBright XLT and UHTC coatings in the "Celestron_AS - Celestron
>coating?" The supreme issue for me is a telescope's OPTICAL QUALITY. If a1/16th wave? Good luck finding that.
>telescope has 1/10 or 1/16 wave surface quality I can tolerate, without
>gives around 15% to 30% "more light" to my eye. Even if StartBright XLT isThe difference between magnitude 14.8 and magnitude 14.0 is about a 108%
>better than UHTC for visual observations there is only 6% improvement.
>Let's say, in a Meade's telescope with UHTC you can see a star of 14.0th
>magnitude. It means, that in a Celestron's telescope with StarBright XLT
>you will be able to see a star of 14.8th magnitude. It's not a big deal
>for me! Did anybody check this?
increase in light gathering.
An increase of 6% gives a magnitude increase of about 0.06.