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More Edmund Scientific!

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#576 highfnum

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Posted 08 February 2021 - 07:36 PM

build 

Ed2.jpg


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#577 clamchip

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Posted 08 February 2021 - 07:44 PM

That would be neat a 2 inch f25.

My old Swift model 838 50mm had something I've never been able to produce in any other scope.

It was the airy disk, it was spherical, 3 dimensional. I don't remember the details, power I observed

this phenomenon, or if the star was slightly de-focused. If I remember correctly I'm pretty sure it was

at high power in-focus. I miss it that's for sure.

 

Robert


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#578 highfnum

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Posted 09 February 2021 - 06:46 AM

swift 838  is a classic with a good rep

as far as i know it is f14 

which is a bit faster

 

my edmund 2 puts up a nice airy disk

with a ball in center i know what u mean


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#579 highfnum

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Posted 22 February 2021 - 12:02 PM

ok  i dusted off my trusty time machine 

went back to 1973

picked up edmund lens 30-202  1.6 inch lens

with instructions 

 

so i will build that 1.6 inch scope  that i thought about so long ago

ed42insorg.jpg

ed42ins.jpg

 

 

 


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#580 highfnum

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Posted 22 February 2021 - 12:04 PM

the  orig pack 

ed42pack.jpg


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#581 Terra Nova

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Posted 22 February 2021 - 12:07 PM

Keep us posted on your progress. It’s an interesting project. I thought about building one of those Wayback in the early to mid-60s. Never did though so I’ll be interested in hearing about yours.


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#582 highfnum

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Posted 22 February 2021 - 12:58 PM

the goods

ed42lensset.jpg

 


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#583 highfnum

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Posted 24 February 2021 - 10:21 AM

well Terra

i built it

i tried to use black like edmund orig

same 30202 lens

followed their baffle instructions

 

 

but i used 1.25 focuser(MEADE)

ed42mine.jpg

 


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#584 Bomber Bob

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Posted 24 February 2021 - 05:01 PM

Love It -- what a great project!


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#585 highfnum

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Posted 24 February 2021 - 05:14 PM

its a small lens

although not my smallest 

got 25mm dollond 1790

30mm baby mak lomo

 

 

 

3inch edmund

 

is like Hubble in comparison 

will try star test tonight 


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#586 Terra Nova

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Posted 24 February 2021 - 05:19 PM

well Terra

i built it

i tried to use black like edmund orig

same 30202 lens

followed their baffle instructions

 

 

but i used 1.25 focuser(MEADE)

attachicon.gifed42mine.jpg

That is so cool! waytogo.gif waytogo.gif



#587 clamchip

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Posted 24 February 2021 - 07:59 PM

This might be worth investigating.

On the surface it appears to be a PDF of 'All About Telescopes',

https://www.scribd.c...bout-Telescopes

 

Robert


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