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Sharpstar 121mm f/5.6 ED Quintuplet no wait

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#1 Shameless Stinkhorn

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Posted 29 October 2020 - 06:51 AM

I would really love a Tak 106ed but I'm not willing to wait at least 8 months. It seems the Sharpstar 121mm f/5.6 ED Quintuplet is available now. I can't find much info about this scope and would like to use it for astro imaging with a GFX100 and Sony A7R4, mostly nebula. Any thoughts?

I will also need to purchase a mount. Do you think the EQ6 would be a good choice? I could budget up $3k for the mount.

Thanks,

Dan



#2 stobiewankenobi

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Posted 04 November 2020 - 12:22 AM

No thoughts yet, but I just bought this scope as well to replace my Explore Scientific ED102 CF. 

 

I was also looking at the Tak, and to me I really liked that the Sharpstar didn't need any back focus toying about. It's just 145mm of available space with a flat field. No measuring spacers and keeping weird/unique imaging trains between cameras. 

 

I also really liked the focal ratio being lower on the Sharpstar as I do mostly photography.

 

I can post my thoughts later this week when I get the scope. Did you end up purchasing or?



#3 calypsob

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Posted 04 November 2020 - 06:51 AM

Id really like to hear more about how this performs.
If you considered an fsq 106, there is now an Askar 108mm petzval, and Sharpstar has a smaller f5.5 94 EDPH
Im not sure the 108 is in stock. The 94 is, and I also see the very large sharpstar Al-140ph

Edited by calypsob, 04 November 2020 - 06:54 AM.


#4 stobiewankenobi

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Posted 16 November 2020 - 11:11 PM

I would really love a Tak 106ed but I'm not willing to wait at least 8 months. It seems the Sharpstar 121mm f/5.6 ED Quintuplet is available now. I can't find much info about this scope and would like to use it for astro imaging with a GFX100 and Sony A7R4, mostly nebula. Any thoughts?

I will also need to purchase a mount. Do you think the EQ6 would be a good choice? I could budget up $3k for the mount.

Thanks,

Dan

 

 

Id really like to hear more about how this performs.
If you considered an fsq 106, there is now an Askar 108mm petzval, and Sharpstar has a smaller f5.5 94 EDPH
Im not sure the 108 is in stock. The 94 is, and I also see the very large sharpstar Al-140ph

I just finished editing my first light with this scope. Really impressed so far. 

 

First light here https://www.instagra.../p/CHiaOCmB6FD/

 

Working on the California Nebula next with the Triad Ultra filter. But super impressed with the results thus far. 



#5 bobzeq25

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Posted 17 November 2020 - 12:20 AM

I would really love a Tak 106ed but I'm not willing to wait at least 8 months. It seems the Sharpstar 121mm f/5.6 ED Quintuplet is available now. I can't find much info about this scope and would like to use it for astro imaging with a GFX100 and Sony A7R4, mostly nebula. Any thoughts?

I will also need to purchase a mount. Do you think the EQ6 would be a good choice? I could budget up $3k for the mount.

Thanks,

Dan

The EQ6-R is a fine mount, the latest version of the much beloved Atlas.

 

It also weighs a lot.  A mount with very similar performance at half the weight is the iOptron CEM40 or GEM45 (variations on a theme).

 

But all those are $1600-$2000.  Mount price is an excellent guide to quality, this market is quite efficient.

 

The $2550 CEM 70 is significantly better.  Intermediate in weight.   So too the $2900 Losmandy GM811G.  I'd recommend one of the last two.  The mount is the most important part of your setup.  There is no such thing as "too good" a mount.  Better mounts make everything work better.

 

But, all of them are hard to find right now.  Supply issues and a boom in people wanting to do astrophotography.


Edited by bobzeq25, 17 November 2020 - 12:24 AM.


#6 calypsob

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Posted 19 November 2020 - 02:40 PM

I just finished editing my first light with this scope. Really impressed so far.

First light here https://www.instagra.../p/CHiaOCmB6FD/

Working on the California Nebula next with the Triad Ultra filter. But super impressed with the results thus far.


Which one? Im not an instagram user

#7 stobiewankenobi

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Posted 19 November 2020 - 02:45 PM

Which one? Im not an instagram user

Sure so I have two now. 

 

Pleaides: https://www.astrobin...4akqyb/?nc=user

California Nebula: https://www.astrobin.com/37kxo9/



#8 calypsob

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Posted 19 November 2020 - 11:42 PM

Sure so I have two now.

Pleaides: https://www.astrobin...4akqyb/?nc=user
California Nebula: https://www.astrobin.com/37kxo9/


Wow those are exceptional. I may spring for the 108mm when I can see some star tests. F3.9 would be great on a mono rig


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