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More Edmund Scientific!

Started by clamchip , Dec 05 2015 01:22 PM

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586 replies to this topic

#576 highfnum

Fly Me to the Moon

Posts: 5,103
Joined: 06 Sep 2006
Loc: NE USA

Posted 08 February 2021 - 07:36 PM

build

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#577 clamchip

Voyager 1

topic starter

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Joined: 09 Aug 2008
Loc: Seattle

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

Fly Me to the Moon

Posts: 5,103
Joined: 06 Sep 2006
Loc: NE USA

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

Fly Me to the Moon

Posts: 5,103
Joined: 06 Sep 2006
Loc: NE USA

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

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#580 highfnum

Fly Me to the Moon

Posts: 5,103
Joined: 06 Sep 2006
Loc: NE USA

Posted 22 February 2021 - 12:04 PM

the orig pack

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#581 Terra Nova

ISS

Posts: 23,961
Joined: 29 May 2012
Loc: Cincinnati Metro Area

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

Fly Me to the Moon

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Joined: 06 Sep 2006
Loc: NE USA

Posted 22 February 2021 - 12:58 PM

the goods

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#583 highfnum

Fly Me to the Moon

Posts: 5,103
Joined: 06 Sep 2006
Loc: NE USA

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)

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#584 Bomber Bob

Hubble

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Posted 24 February 2021 - 05:01 PM

Love It -- what a great project!

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#585 highfnum

Fly Me to the Moon

Posts: 5,103
Joined: 06 Sep 2006
Loc: NE USA

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

ISS

Posts: 23,961
Joined: 29 May 2012
Loc: Cincinnati Metro Area

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)

ed42mine.jpg