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First thoughts - C9.25 SGT XLT

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18 years 9 months ago #13928 by kevin
Replied by kevin on topic Re: First thoughts - C9.25 SGT XLT
Nice scope Dave. Hope you get loads of clear nights and beautiful images.

Kevin Black
EAAS MEMEBER

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18 years 8 months ago #14990 by darren
Replied by darren on topic new scope
Dave where did you buy the scope as I am In the process of getting a sct 11inch

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  • DaveGrennan
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18 years 8 months ago #14994 by DaveGrennan
Replied by DaveGrennan on topic Re: First thoughts - C9.25 SGT XLT
Darren,

I bought it from Astronomy Ireland. 2995Euro is what it cost.

Regards and Clear Skies,

Dave.
J41 - Raheny Observatory.
www.webtreatz.com
Equipment List here

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18 years 8 months ago #14995 by DaveGrennan
Replied by DaveGrennan on topic Re: First thoughts - C9.25 SGT XLT
I should add that the price has dropped since then. SO you might wanna check out the STG price first.

Regards and Clear Skies,

Dave.
J41 - Raheny Observatory.
www.webtreatz.com
Equipment List here

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18 years 8 months ago #14999 by albertw
Replied by albertw on topic Re: First thoughts - C9.25 SGT XLT

Apparantly the XLT impvroves the Light gathering power by 16% so working this out, my 9.25" scope has the LGP of a 10" non XLT scope.


I always thought that these numbers (and the coatings) were a gimmick. Until I started seriously looking for a scope and came across a review of Meades UHT coating ( www.arksky.org/uhtc_compare.htm ). The tests actually exceed Meades marketing numbers. It made it worth the extra money, and Meade made the coating standard.

I'd imaine that the XLT coatings are somewhat similar.

The only problem (avantage?) is that it scares you from cleaning the optics at all!

Good luck with the new toy!

Cheers,
~Al

Albert White MSc FRAS
Chairperson, International Dark Sky Association - Irish Section
www.darksky.ie/

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18 years 8 months ago #15000 by DaveGrennan
Replied by DaveGrennan on topic Re: First thoughts - C9.25 SGT XLT

I'd imaine that the XLT coatings are somewhat similar.

The only problem (avantage?) is that it scares you from cleaning the optics at all!

Good luck with the new toy!


cheers Al,

Your right, I'm scared to hell to even breath near the corrector plate. The XLT specs say the increase in light gathering power is 16%. This brings a 9.25" closer to the LGP of a 10". Signiificant I think. I'd also imagine Meades UHTC offering is similar, one or the other probably nicked the specs anyway!

Regards and Clear Skies,

Dave.
J41 - Raheny Observatory.
www.webtreatz.com
Equipment List here

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