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Short question about Doublestack PST

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9 replies to this topic

#1 Kathi

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Posted 08 November 2018 - 04:31 PM

Hi!

I will get a Coronado Doublestack PST in 4 weeks (used, without case).
Can anybody tell me the lengh of a PST with screwed on doublestackfilter, because I can get a good case now, but I am not shure about the size. 

Is a 16x20x52cm (size inside) case too small?

 

Thanks, Kathi
(Sorry, I am not a native English speaker)



#2 MalVeauX

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Posted 08 November 2018 - 04:47 PM

I think it's 20x11x8 with the double stack. *See later posts, measured it. So it would squeeze into the case (inside dimensions). You might want something a bit bigger to allow for ample padding.

 

Very best,


Edited by MalVeauX, 09 November 2018 - 08:14 AM.


#3 Kathi

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Posted 08 November 2018 - 04:57 PM

Sorry, I am not shure I understand your answer.  20x11x8? It can't be centimeters? 20x11x8 Inch?

And yes, I need some padding!

The next case size would be 20x22x56cm (inside dimensions). Better?
The third case size is big - I think 25x28x80cm (inside dimensions) is too big ...

 

Kathi
 



#4 MalVeauX

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Posted 08 November 2018 - 07:22 PM

I have the standard case that comes with the PST and there's plenty of room to insert the double stock module (not attached to the primary scope of course). Just something to know.

 

And yes, above was in inches.

 

Very best,



#5 RickV

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Posted 09 November 2018 - 12:33 AM

Wake Up Marty.  When Kathi from Austria speaks about cm, you answered without units. smirk.gif

Then you partially woke up and spoke in inches.

About the only folks in the world that use inches now... are the USA.

Sure there are some remnants in the United Kingdom but Canada, Australia and New Zealand are officially metric.

(Being an old Canadian, I am fluent (read 'confused') in both Imperial and Metric units.) bawling.gif

 

Best,

Rick


Edited by RickV, 09 November 2018 - 12:33 AM.


#6 Kathi

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Posted 09 November 2018 - 02:40 AM

Thanks!

Is there nobody out there with a double stacked PST woh can measure its length with the doulbestack filter screwd on it?

20x11x8 Inch isn't possible - I am shure a PST isn't 8'' width ...

 

Kathi


Edited by Kathi, 09 November 2018 - 02:41 AM.

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#7 MalVeauX

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Posted 09 November 2018 - 07:42 AM

Oh sweet lord, excuse me! wink.gif  bow.gif

 

+++++++++++++++++++++++

 

The PST on it's own is approximately 15 inches from back of black box to front of the objective in single stack configuration (38cm).

The PST from the bottom of the black box to the top of the eyepiece holder without an eyepiece is approximately 5.5 inches (14cm).

 

The double stack module adds another approximate 4 inches (10cm) to the front of the PST's length when threaded on.

 

So if you want to look at it like that, it's approximately 20 inches long by 5.5 inches tall and it's less than 3 inches wide.

 

Add foaming protection around those dimensions and you're set.

 

You can actually make it all fit in the original PST box, including the double stack module. Just not threaded onto the PST.

 

Very best,


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#8 Kathi

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Posted 09 November 2018 - 08:07 AM

Perfect - thanks!

 

And I buy a used one and I will not get an original PST box with it. Because of this I need a case.

 

Thanks, now I know what I need,

Kathi


Edited by Kathi, 09 November 2018 - 08:08 AM.


#9 BYoesle

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Posted 11 November 2018 - 12:20 PM

HI Kathi,

 

Be advised that buying a used PST almost guarantees the ITF filter will be deteriorated.

 

https://www.cloudyni...t/#entry7111180

 

The very best replacement for the ITF is the Beloptik:

 

https://beloptik.de/...acement-filter/

 

If however, you have one of the PST scopes that put the ITF coating on the objective,

 

https://stargazerslo...comment=2359543

 

you'll need a new objective without the ITF coating, and to add the Beloptik filter....



#10 Kathi

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Posted 12 November 2018 - 08:34 AM

Thanks!

The used PST I am buying got a new ITF (from Beloptik!) one year ago! wink.gif 

 

Kathi




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