[Try Astronomy] Re: Solar filters

Heh, OK - I guess the consensus is against me on this one. I'll leave the
idea alone for solar - it does kinda seem like trying to find the safest way
to run across a busy interstate. I might keep the
pinholes-in-black-construction-paper idea for lunar observing. I'd like to
see what effect it has there, and for lunar viewing there's no safety
issues. I'm thinking it might help bring out some detail on the lunar
surface by reducing the amount of light glare. Another thought I had, also
for lunar and planetary viewing on the cheap, was colored plastic wrap over
the objective or under the eyepiece.

On 5/22/06, Rebecca Sher <beeker_p@xxxxxxxxxxx> wrote: 

JUSTIN DON'T DO IT! No pinhole, no homemade scheme, nothing like that! Buy
the Baader film, cheap, easy to make your own solar filter with that, I
used Baader film and a few cardboard circles to make a great solar filter
for my 10" and it cost me about $4.50. We might even have some Baader film
left over from the transit floating around the Urban Ecology Center (Vic do
you remember?) if we can find it you are more then welcome to it. It isn't
doing anyone any good just sitting around. It cost me about $0.17 a square
inch or something. Just DON'T DO YOUR EXPERIMENT!



Becca

 ------------------------------
Date: Mon, 22 May 2006 16:31:07 +0000
From: astrosetz@xxxxxxxxxxx


Subject: [Try Astronomy] Re: Solar filters
To: tryastronomy@xxxxxxxxxxxxx


I would abandon the pinhole idea all together...it's not safe for your
eyes *or* your camera.



Best to use commercial solar filters. Baader film is downright cheap and
very effective.

 ------------------------------
Date: Mon, 22 May 2006 09:59:08 -0500
From: bigdaddyj@xxxxxxxxx
To: tryastronomy@xxxxxxxxxxxxx
Subject: [Try Astronomy] Re: Solar filters

Hehehe...that's why I listed safety ahead of satisfaction. If the focused
light coming out of the eyepiece feels anywhere near dangerous (read: warm),
I won't look through it. Another thing running through my mind is what I
could use besides my skin to test the heat, as it's possible that less heat
than would bother my inner wrist could damage my eye. Believe me, I work
with computers for a living - being blind is not very conducive to that type
of career. I may just end up using my camera instead of my eyes - I have
learned that photographic solar film filters a bit less than visual grade,
so my pinhole filter combined with a superfast shutter speed may be enough
for that use.

On 5/22/06, Jenny Morgan <jmorganix@xxxxxxx> wrote:
>
> How much IS your vision worth?
>
> Jenny Morgan
> On May 22, 2006, at 9:00 AM, Justin Purdy wrote:
>
> > Right - but those all use the solar film. I'm wondering if there's a
> > way to do this with regular household objects. Image quality is not
> > the true goal here, but safety and the satisfaction of making it
> > myself. I suppose I'll end up buying some film and making a proper
> > filter eventually, but I'd like to try coming up with something
> > completely homemade. I would imagine the easiest way to test the
> > safety of anything I come up with would be to locate the "exit pupil"
> > with some smoke, then test the heat with the palm of my hand or the
> > inside of my wrist. Does anybody know how the regular solar film
> > actually works? Knowing how the real stuff does its job would make it
> > much easier to approximate. I'm currently leaning toward the
> > pinhole-in-foil idea right now, as I have foil at home anyway.
> >
> > On 5/22/06, Keith Parkansky <keith@xxxxxxxxxxxxx > wrote:
> >> build solar filter
> >> and it'll bring up a lot of
> >> instructional pages.
> >> --
> >> Keith Parkansky
> >> "If being in a plane is flying, then
> >> riding in a boat is swimming." SKYDIVE!
> >> --
>
>


--
01011001 01101111 01110101 00100000 01101000 01100001 01110110 01100101
00100000 01110111 01100001 01111001 00100000 01110100 01101111 01101111
00100000 01101101 01110101 01100011 01101000 00100000 01100110 01110010
01100101 01100101 00100000 01110100 01101001 01101101 01100101 00101110




--
01011001 01101111 01110101 00100000 01101000 01100001 01110110 01100101
00100000 01110111 01100001 01111001 00100000 01110100 01101111 01101111
00100000 01101101 01110101 01100011 01101000 00100000 01100110 01110010
01100101 01100101 00100000 01110100 01101001 01101101 01100101 00101110

Other related posts: