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Equipment Discussions >> Refractors

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steve-in-kville
sage


Reged: 12/24/07

Loc: Pennsylvania, USA
Finding the sun without going blind! new
      #5826511 - 04/27/13 03:10 PM

I've been doing some solar viewing (obviously with a filter). I am really enjoying it. However, since I do not have a filter for my finder scope, how should I go about finding the sun with my scope?

There has got be a nifty trick to this!! The first time I did solar I covered the finder objective with my fingers and was about to get it close enough I could find it with my scope.

I welcome and help.


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jgraham
Postmaster
*****

Reged: 12/02/04

Loc: Miami Valley Astronomical Soci...
Re: Finding the sun without going blind! new [Re: steve-in-kville]
      #5826522 - 04/27/13 03:16 PM

Oh yes, this is any easy one. To point your telescope at the sun don't look at or along your scope, look at its shadow. When it is pointing at the sun you'll see just the shadow of the tube as viewed from the end.

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Jeff Gardner
member


Reged: 09/12/11

Re: Finding the sun without going blind! new [Re: steve-in-kville]
      #5826526 - 04/27/13 03:17 PM

Use the shadow cast by the OTA on the ground to align the scope. Another tip is to remove the eyepiece from the diagonal to provide a larger field of view while trying to find the sun. Look into the diagonal until the suns appears, then replace the eyepiece.

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StarStuff1
Post Laureate
*****

Reged: 04/01/07

Loc: South of the Mason-Dixon Line
Re: Finding the sun without going blind! new [Re: Jeff Gardner]
      #5826533 - 04/27/13 03:21 PM Attachment (23 downloads)

It is easy to make a "Sunfinder" device. As mentioned, make the shadow of the tube as small as possible and use the SunFinder to fine tune. Nice sunspots lately.

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steve-in-kville
sage


Reged: 12/24/07

Loc: Pennsylvania, USA
Re: Finding the sun without going blind! new [Re: StarStuff1]
      #5826541 - 04/27/13 03:23 PM

Ahh!! Never would have thought about the shadow!!

I did consider using my 42mm plossl for its wide view and then switching to more power.

I'm gonna go try the shadow trick first.... I'll let you all know how I make out.


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steve-in-kville
sage


Reged: 12/24/07

Loc: Pennsylvania, USA
Re: Finding the sun without going blind! new [Re: steve-in-kville]
      #5826579 - 04/27/13 03:41 PM

Just came back in. This worked real sweet. I had my 20mm plossl in and I had the sun in my view right away. Just had to center it up a little.

Thanks for the help.


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MAURITS
scholastic sledgehammer


Reged: 09/22/09

Loc: Belgium
Re: Finding the sun without going blind! new [Re: steve-in-kville]
      #5826612 - 04/27/13 04:00 PM

Steve, NEVER look at the sun without the right information and the right solar tools!

Keep in mind, without these above here, it is very dangerous!


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jerwin
scholastic sledgehammer
*****

Reged: 05/17/12

Loc: Romeoville IL
Re: Finding the sun without going blind! new [Re: MAURITS]
      #5827596 - 04/28/13 12:57 AM

These are pretty cheap and work great.
http://www.dynapod.com/dyna-hp1.html

Jim


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beatlejuice
Pooh-Bah
*****

Reged: 04/05/11

Loc: Hamilton, ON,Canada
Re: Finding the sun without going blind! new [Re: jerwin]
      #5827678 - 04/28/13 02:14 AM

Quote:

These are pretty cheap and work great.
http://www.dynapod.com/dyna-hp1.html





Yep, thats what I use now.

Eric


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Joe C
sage
*****

Reged: 11/29/08

Re: Finding the sun without going blind! new [Re: beatlejuice]
      #5827705 - 04/28/13 02:39 AM

I ended up getting an additional lens cover for my right angle finder. I cut it out and used black RTV and siliconed a small piece of Baader film to the cap.

There you have it. A solar friendly finder.

BTW...I use the shadow method first.


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core
Pooh-Bah
*****

Reged: 02/23/08

Loc: Mostly in Norman, OK
Re: Finding the sun without going blind! new [Re: Joe C]
      #5827740 - 04/28/13 03:38 AM Attachment (24 downloads)

fwiw, my solution ...

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core
Pooh-Bah
*****

Reged: 02/23/08

Loc: Mostly in Norman, OK
Re: Finding the sun without going blind! [Re: core]
      #5827744 - 04/28/13 04:27 AM Attachment (12 downloads)

... 'Magic Tape' on the back; the one thing I like about this setup is that you can easily align the finder to the scope with a spot of sharpie ink on the tape.

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MAURITS
scholastic sledgehammer


Reged: 09/22/09

Loc: Belgium
Re: Finding the sun without going blind! new [Re: core]
      #5828723 - 04/28/13 04:44 PM

This is my solution:



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wiruna
member


Reged: 08/11/06

Loc: Sydney, Australia
Re: Finding the sun without going blind! new [Re: MAURITS]
      #5829278 - 04/28/13 10:38 PM

Televue also make a solar finder
http://www.optcorp.com/televue-sol-searcher-sun-finder-sff-1006.html
I have one and it works well.


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Scott BeithAdministrator
SRF
*****

Reged: 11/26/03

Loc: Frederick, MD
Re: Finding the sun without going blind! new [Re: wiruna]
      #5829292 - 04/28/13 10:48 PM

Quote:

Televue also make a solar finder
http://www.optcorp.com/televue-sol-searcher-sun-finder-sff-1006.html
I have one and it works well.




This is the one I use as well. Great little device.


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Starhawk
Space Ranger
*****

Reged: 09/16/08

Loc: Tucson, Arizona
Re: Finding the sun without going blind! new [Re: Scott Beith]
      #5829830 - 04/29/13 10:18 AM

You can also have a dowel point forwards from a flat for a version of the shadow trick. If feeling daring, you can watch a projected image from the viewfinder, but that's dangerous if not carefully put together with a screen.

-Rich


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jrbarnett
Eyepiece Hooligan
*****

Reged: 02/28/06

Loc: Petaluma, CA
Re: Finding the sun without going blind! new [Re: steve-in-kville]
      #5830016 - 04/29/13 12:05 PM

Perhaps the easiest, low-tech, zero cost way is to simply minimize the shadow of the instrument and mount as it is cast on your chest and stomach when seated behind the scope. The point at which the shadow is as small and well-defined as it can be is the point when the Sun is dead-center in the objective, generally.

Regards,

Jim


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SteveC
Post Laureate
*****

Reged: 06/15/06

Loc: Sunshine State & Ocean State
Re: Finding the sun without going blind! new [Re: jrbarnett]
      #5832103 - 04/30/13 11:59 AM

Quote:

Perhaps the easiest, low-tech, zero cost way is to simply minimize the shadow of the instrument and mount as it is cast on your chest and stomach when seated behind the scope. The point at which the shadow is as small and well-defined as it can be is the point when the Sun is dead-center in the objective, generally.

Regards,

Jim




My stomach introduces too many visual distortions. I'd like to blame it on atmospheric conditions, but it's really all those Yuenglings that's to blame.


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jrbarnett
Eyepiece Hooligan
*****

Reged: 02/28/06

Loc: Petaluma, CA
Re: Finding the sun without going blind! new [Re: SteveC]
      #5832162 - 04/30/13 12:23 PM

I know what you mean, Steve.

"OMG! Look at that HUGEMONGOUS sunspot!!!! Oh, wait. Neverind. That's my belly button. Move along, ma'am. One of those other guys will let you look through their telescope."

- Jim


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SteveC
Post Laureate
*****

Reged: 06/15/06

Loc: Sunshine State & Ocean State
Re: Finding the sun without going blind! new [Re: jrbarnett]
      #5832420 - 04/30/13 02:03 PM

Quote:

I know what you mean, Steve.

"OMG! Look at that HUGEMONGOUS sunspot!!!! Oh, wait. Neverind. That's my belly button. Move along, ma'am. One of those other guys will let you look through their telescope."

- Jim




Okay, that's an image that needs to be deleted from my head.


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