home nade 4 inch scope based on davidG hand held scope

highfnum · Post by **highfnum** » Sat Apr 19, 2014 3:42 pm

home made 4 inch solar ha-scope
I up scaled to 4 inch

100mm lunt ERF
50mm lunt tilt tuned ha unit used as internal etalon with proper 80X 400mm lens

b1200 lunt blocking filter

highfnum · Post by **highfnum** » Sat Apr 19, 2014 3:44 pm

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this is pic from scope
seeing was bad but results OK

highfnum · Post by **highfnum** » Sat Apr 19, 2014 3:46 pm

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one more

highfnum · Post by **highfnum** » Sat Apr 19, 2014 3:58 pm

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the scope

Post by **marktownley** » Sat Apr 19, 2014 6:41 pm

That is an excellent result!

highfnum · Post by **highfnum** » Sat Apr 19, 2014 8:30 pm

: Abetterpic100mm.jpg (107.48 KiB) Viewed 4931 times

thx

better mount plus more stacked images = better results

highfnum · Post by **highfnum** » Sat Apr 19, 2014 11:51 pm

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one more of above

highfnum · Post by **highfnum** » Sat Apr 19, 2014 11:52 pm

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inverse

swisswalter · Post by **swisswalter** » Sun Apr 20, 2014 6:41 am

Hi John

congratulations, a very fine job

Post by **marktownley** » Sun Apr 20, 2014 7:03 am

What etalon is being used here?

swisswalter · Post by **swisswalter** » Sun Apr 20, 2014 7:44 am

Hi Mark

a luntLS50 see start of the post

Post by **marktownley** » Sun Apr 20, 2014 8:14 am

Doh! I even read that last night, then forgot

Peter Williams · Post by **Peter Williams** » Sun Apr 20, 2014 10:33 am

Lots of spicules and other details, good work on building the scope.

highfnum · Post by **highfnum** » Sun Apr 20, 2014 11:17 am

thx
it worked better than i thought
there is no barlow - that is prime focus
4 inch f/12 is a bit too long
im going to try a 4 inch with faster f ratio

so simply you can convert an external etalon
to internal etalon by just adding lens to make light parallel

why is this not done more often?

highfnum · Post by **highfnum** » Sun Apr 20, 2014 4:59 pm

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sun from 4/20

swisswalter · Post by **swisswalter** » Sun Apr 20, 2014 6:09 pm

Hi John

another good shot

Peter Williams · Post by **Peter Williams** » Mon Apr 21, 2014 11:13 am

Again a lot of spicule detail, good job.

highfnum · Post by **highfnum** » Mon Apr 21, 2014 11:48 pm

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a few more from same day

highfnum · Post by **highfnum** » Mon Apr 21, 2014 11:49 pm

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b + w version

highfnum · Post by **highfnum** » Tue Apr 22, 2014 11:31 pm

seeing a bit off but still a scary surface

swisswalter · Post by **swisswalter** » Wed Apr 23, 2014 4:56 am

Hi John

a nice colored addition

home nade 4 inch scope based on davidG hand held scope

home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope

Re: home nade 4 inch scope based on davidG hand held scope