More Edmund Scientific!
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.
- SandyHouTex, steve t, Bomber Bob and 1 other like this
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
- clamchip and steve t like this
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.
- highfnum, clamchip and steve t like this
Posted 24 February 2021 - 05:14 PM
its a small lens
although not my smallest
got 25mm dollond 1790
30mm baby mak lomo
is like Hubble in comparison
will try star test tonight
- Terra Nova likes this