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DIY Collapsible Solar Finder

accessories DIY observing solar
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#1 RickV

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Posted 20 March 2017 - 06:27 PM

Here's something that may be of interest to those of you with solar scopes.

My solar scopes are small 50 - 66mm gems that fit into small foam-lined aluminum cases.  There is no room for a commerical solar finder that sticks up from the telescope... can't close the lid.  What I needed was a solar finder that was collapsible.  Here's what I made.

Collapsed

P1.jpg

Deployed

P2.jpg

Seeking to center the sun

P3.jpg

More Seeking

P4.jpg

More seeking

P5.jpg

Got it!

P6.jpg
 

The dimensions are 4.5 inch long x 1.5 inches wide and 1/4 inch high - made from 1/8 inch thick aluminum.  The small hinges are brass from a hardware store.

Mounted on my Lunt LS50, my solar finder lies nice and flat in my telescope case.


Edited by RickV, 20 March 2017 - 06:28 PM.

  • Traveler, havasman, davejlec and 1 other like this

#2 RickV

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Posted 29 March 2017 - 12:14 PM

Here's my Lunt LS50 fitted out with my collapsible solar finder... deployed in the telescope case... which can't close.

P7.jpg

 

Here's my Lunt LS50 fitted out with my collapsible solar finder... collapsed in the telescope case... which can now close.

P8.jpg

 

Cool... waytogo.gif



#3 halx

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Posted 29 March 2017 - 12:43 PM

Well done! Bomb proof indeed. I guess these hinges have a stop at the right angle? The hole is actually not necessary, as you can simply observe the concentric shadow. I would personally just make the finder detachable. But you were probably already fed up with seven other pieces in the box which you need to attach/detach each time laugh.gif

Also, you may consider replacing the back plate with a piece of well-sanded polycarbonate. You will be able to see the shadow or the spot from the hole from the eyepiece side as well.


Edited by halx, 29 March 2017 - 12:49 PM.


#4 RickV

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Posted 29 March 2017 - 08:59 PM

Hi Alex,

Thanks for your comments.

 

RE:  I guess these hinges have a stop at the right angle?

Yes, I bent them just the 'right' amount.

 

RE: ... you were probably already fed up with seven other pieces in the box which you need to attach/detach each time lol.gif

Yes.

 

RE: ... consider replacing the back plate with a piece of well-sanded polycarbonate. You will be able to see the shadow or the spot from the hole from the eyepiece side as well.

That's a good suggestion... too late for me now but a good point for others reading this! waytogo.gif



#5 halx

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Posted 29 March 2017 - 11:46 PM

Why not? Polycarbonate can be drilled and tapped with the same tools as aluminum (better a bit slower). In a worst case, you will need to adjust for the plastic's thickness (shave protruding ends or fill in the holes).




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