AP 3600GTO required?

[LewisM]

Reckon the 3600GTO would be capable?

http://petapixel.com/2015/04/27/massive-2540mm-f8-nasa-lens-shows-up-on-ebay/

:)

[Eden]

I'm surprised you haven't bought it yet, Lewis ;-)

[g__day]

Yes,

What is the measurement refering to the focal length? What is the diameter of the primary mirror?

[Bart]

317.5 mm? :shrug:

[LewisM]

It is relisted: http://www.ebay.com/itm/Huge-NASA-mirror-tele-lens-Jonel-100-2540mm-F-8-for-6x6-and-more-/271857041329?

[gregbradley]

So basically its a Celestron Edge 12 inch that is way overweight.

Greg.

[LewisM]

Just probably with better optics (which admittedly would not be too difficult :scared3:)

[RB]

Форум нарушение для Льюиса , 99 точки и запрета


:computer:

[LewisM]

Έγκυρη εάν μεταδίδεται μόνο σε ένα λέιζερ 50w...

[gregbradley]

Perhaps but who wants to spend US$33K to find out!

I doubt its got cutting edge optics otherwise that formula would've taken off in amateur astronomy. .8 strehl is Yawn! Probably good for an SCT I suppose but pathetic for anything serious. AP and TEC run at .99 strehl for APOs.

Greg.

[LewisM]

I agree - just thought it interesting. I didn't see a mention of Strehl anywhere though (are you confusing it with the multiple zoom lens thread?)