Sharpstar 121mm f/5.6 ED Quintuplet Apo Refractor

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Freddy Mercurio
Freddy Mercurio Contributing Member • Posts: 513
Sharpstar 121mm f/5.6 ED Quintuplet Apo Refractor

Does anyone have any knowledge about the image quality of the above mentioned scope?

Thank,

Dan

DavidWright2010 Senior Member • Posts: 2,782
Re: Sharpstar 121mm f/5.6 ED Quintuplet Apo Refractor

Freddy Mercurio wrote:

Does anyone have any knowledge about the image quality of the above mentioned scope?

Thank,

Dan

I presume you've seen this web page and the 2 sample images: Link.

David

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Freddy Mercurio
OP Freddy Mercurio Contributing Member • Posts: 513
Re: Sharpstar 121mm f/5.6 ED Quintuplet Apo Refractor

DavidWright2010 wrote:

Freddy Mercurio wrote:

Does anyone have any knowledge about the image quality of the above mentioned scope?

Thank,

Dan

I presume you've seen this web page and the 2 sample images: Link.

David

Yes I did. I don't have enough experience to judge them, other than they seem to have a lot of jpeg compression artifacts.

Dan

Guido FORRIER Senior Member • Posts: 1,837
Re: Sharpstar 121mm f/5.6 ED Quintuplet Apo Refractor
DavidWright2010 Senior Member • Posts: 2,782
Re: Sharpstar 121mm f/5.6 ED Quintuplet Apo Refractor

Freddy Mercurio wrote:

DavidWright2010 wrote:

Freddy Mercurio wrote:

Does anyone have any knowledge about the image quality of the above mentioned scope?

Thank,

Dan

I presume you've seen this web page and the 2 sample images: Link.

David

Yes I did. I don't have enough experience to judge them, other than they seem to have a lot of jpeg compression artifacts.

Dan

It certainly does. But the corner stars look good.

David

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Astrophotographer 10 Forum Pro • Posts: 13,875
Re: Sharpstar 121mm f/5.6 ED Quintuplet Apo Refractor

Here's another image that shows good star performance. The sample images are very poor and create a bad impression. This one seems quite good.

Keep in mind the no longer made Takahashi FSQ130 was being sold for around US$14,000!!

Greg.

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