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42" mirror for sale

From StarDust@21:1/5 to All on Sat Jul 8 02:38:58 2023

https://www.cloudynights.com/classifieds/item/341559-42-f39-newtonian-mirror-in-go-to-dobsonian-modular-mount/

only $40k!

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

From StarDust@21:1/5 to StarDust on Sat Jul 8 10:47:07 2023

On Saturday, July 8, 2023 at 2:39:00 AM UTC-7, StarDust wrote:

https://www.cloudynights.com/classifieds/item/341559-42-f39-newtonian-mirror-in-go-to-dobsonian-modular-mount/

only $40k!

$1000/inch?

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

From Martin Brown@21:1/5 to StarDust on Sat Jul 8 20:29:51 2023

On 08/07/2023 18:47, StarDust wrote:

On Saturday, July 8, 2023 at 2:39:00 AM UTC-7, StarDust wrote:

https://www.cloudynights.com/classifieds/item/341559-42-f39-newtonian-mirror-in-go-to-dobsonian-modular-mount/

only $40k!

$1000/inch?

Price for aperture scales roughly as diameter^2.5

https://www.researchgate.net/publication/260077327_The_scaling_relationship_between_telescope_cost_and_aperture_size_for_very_large_telescopes

A snip compared to this "Observatory" class instrument - a cool £500k.

https://planewave.com/product/pw1000-1-meter-observatory-system/

--
Martin Brown

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

From RichA@21:1/5 to StarDust on Sat Jul 8 16:49:41 2023

On Saturday, 8 July 2023 at 05:39:00 UTC-4, StarDust wrote:

https://www.cloudynights.com/classifieds/item/341559-42-f39-newtonian-mirror-in-go-to-dobsonian-modular-mount/

only $40k!

Why would anyone build a solid wood tube for such a scope? Ridiculous.

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

From palsing@21:1/5 to StarDust on Sat Jul 8 17:24:34 2023

On Saturday, July 8, 2023 at 2:39:00 AM UTC-7, StarDust wrote:

https://www.cloudynights.com/classifieds/item/341559-42-f39-newtonian-mirror-in-go-to-dobsonian-modular-mount/

only $40k!

I think my friend paid a lot more than that for his 48"...

https://2.bp.blogspot.com/_i_7lRndK2Fg/S_rzcKTN7FI/AAAAAAAAAOE/ez84u_66SSI/s1600/jimi_alvin_48inch.jpg

... but the views, from west Texas, are mind-boggling!

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

From StarDust@21:1/5 to StarDust on Sat Jul 8 21:46:56 2023

On Saturday, July 8, 2023 at 10:47:09 AM UTC-7, StarDust wrote:

On Saturday, July 8, 2023 at 2:39:00 AM UTC-7, StarDust wrote:

https://www.cloudynights.com/classifieds/item/341559-42-f39-newtonian-mirror-in-go-to-dobsonian-modular-mount/

only $40k!

$1000/inch?

My mirror is bigger, 50" and cost less!
In the bathroom!
🤣🤣🤣

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

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