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SW 14" Collapsible

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#1 25585

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Posted 03 March 2024 - 06:26 PM

Anyone have or had the 14"? 
 

My eyepieces should be OK with F4.65, though I would prefer F5 if only....



#2 vtornado

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Posted 03 March 2024 - 07:30 PM

I've got the 12.  No problems.


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#3 Medic801

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Posted 03 March 2024 - 10:22 PM

We've got a 14" no problems with any EP's as long as tye adapters that come with the scope are used to achieve back focus


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#4 dave253

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Posted 04 March 2024 - 06:36 AM

Yep, I have the 14, GSO CC, and a few extra bits and pieces. 
 

It’s really nice with the ES 18/82 2”.


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#5 skyward_eyes

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Posted 04 March 2024 - 07:54 AM

Most eyepieces are fine at this speed although you will get people you prefer a coma corrector at this speed. I find its a coma corrector isn't needed until you start approaching f/4.2 or faster but that is my personal opinion. 


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#6 CowTipton

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Posted 05 March 2024 - 04:49 PM

Anyone have or had the 14"? 
 

My eyepieces should be OK with F4.65, though I would prefer F5 if only....

I have the 14" as well and enjoy using it very much.

You will notice coma for sure at the native f/4.6 in my opinion.

 

If you want to use a Paracorr2 you may need to replace the stock 2" adapter as it may have an internal ridge which blocks insertion.

I replaced the entire stock visual back (unscrews from end of drawtube) with a Baader clicklock version and the problem was solved.

So now I almost always view at f/5.3 with no coma.


Edited by CowTipton, 05 March 2024 - 04:49 PM.

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#7 Coldwarwarrior

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Posted 06 March 2024 - 04:27 AM

I've got the GoTo SW 14" , great scope and use it for Deep Sky viewing mostly.

 

You will notice coma particularly if using wider AFOV eyepieces like 68 degrees or more. I'm currently in the process of acquiring TV Delite EP's at 62 degree AFOV to minimise the coma effect, also use a Baader Zoom which has a narrow field.

 

A few times I have used 82 degree EP's and it was rough, lots of coma which I find really detracts from the viewing experience, so I prefer EP's with a tighter field but with great edge to edge performance.

 

If you want a flat field with wider field EP's you will have to get a Parracorr.


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#8 Skyscratcher88

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Posted 06 March 2024 - 09:36 AM

I have a Hubble Optics UL14 F4.6 heading my way and have been thinking about this same issue. In my research narrower AFOV EPs (Morpheus/Delos/Pentax XW) should tame the Coma to acceptable levels.My idea for this scope is, light weight quick deploying. The less gear the better.

In my F5 dob coma is no issue with the APM 30/70 (sharp across field) and Morpheus 17.5/12.5/9 are great also.
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#9 MeridianStarGazer

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Posted 16 March 2024 - 06:15 PM

Anyone have or had the 14"?

My eyepieces should be OK with F4.65, though I would prefer F5 if only....

Would you rather have 13" f5 or 14" f4.65? Even f5 has some coma.

...
I now recall, it is the 70mm focal length you want, not the f5.

Edited by MeridianStarGazer, 16 March 2024 - 06:19 PM.



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