OIII goggles.

Anyone here tried looking at the sky through a pair of OIII filters on a
dark night under good conditions?
I'm curious if you can see, say, the veil in Cygnus just hanging in the sky.

Regards,
Etok



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"etok" wrote in message
...
Anyone here tried looking at the sky through a pair of OIII filters on a
dark night under good conditions?
I'm curious if you can see, say, the veil in Cygnus just hanging in the
sky.

Regards,
Etok


Celestron has a pair of binocs with built in LPR filters...(#72102, Optiview
LPR)
They would probably produce the same effect, anyone tried it yet??

cheers
Søren

Hi,
We've toyed about making a pair nebula filter glasses at our shop.


Al M


"Søren Kjærsgaard" wrote in message . dk...
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"etok" wrote in message
...
Anyone here tried looking at the sky through a pair of OIII filters on a
dark night under good conditions?
I'm curious if you can see, say, the veil in Cygnus just hanging in the
sky.

Regards,
Etok


Celestron has a pair of binocs with built in LPR filters...(#72102, Optiview
LPR)
They would probably produce the same effect, anyone tried it yet??

cheers
Søren

On 23 Sep 2003 05:56:24 -0700, (Al M) wrote:

Hi,
We've toyed about making a pair nebula filter glasses at our shop.

Al, my understanding is that its important to keep many kinds of
filters perpendicular to the light cone axis. Izzat true, and if so,
how would this impact the goggle design?

Wayne Hoffman
33° 49" 17' N 117° 56" 41' W
"Don't Look Down"

http://home.pacbell.net/w6wlr/

"Al M" wrote in message
om...
Hi,
We've toyed about making a pair nebula filter glasses at our shop.


Al M

Neb-U-La Spex?
If I could justify springing for another OIII, I'd love to give it a try. I
think Shneor Sherman fitted something similar to a pair of binoculars.

Etok



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"WayneH" wrote in message
news
On 23 Sep 2003 05:56:24 -0700, (Al M) wrote:

Hi,
We've toyed about making a pair nebula filter glasses at our shop.

Al, my understanding is that its important to keep many kinds of
filters perpendicular to the light cone axis. Izzat true, and if so,
how would this impact the goggle design?

True, the more narrow the filter the more sensitive to angle of incident
(AOI)
http://users.erols.com/dgmoptics/filters.htm

Dan McShane

Wayne Hoffman
33° 49" 17' N 117° 56" 41' W
"Don't Look Down"

http://home.pacbell.net/w6wlr/


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Hi Wayne,
You hit it on the money. Such goggles would have to employ small
lenses to avoid overly extreme angles of viewing. The angles much
beyond 15 degrees would shift the peak to the left of the nebular
emission lines.


Al M

WayneH wrote in message . ..
On 23 Sep 2003 05:56:24 -0700, (Al M) wrote:

Hi,
We've toyed about making a pair nebula filter glasses at our shop.

Al, my understanding is that its important to keep many kinds of
filters perpendicular to the light cone axis. Izzat true, and if so,
how would this impact the goggle design?

Wayne Hoffman
33° 49" 17' N 117° 56" 41' W
"Don't Look Down"

http://home.pacbell.net/w6wlr/

Walter Scott Houston reports that he used an OIII filter naked eye to
view the California Nebula, on page 34 of Deep-Sky Wonders. He did it
from the dark skies of Mexico, in the winter.


"etok" wrote in message ...
Anyone here tried looking at the sky through a pair of OIII filters on a
dark night under good conditions?
I'm curious if you can see, say, the veil in Cygnus just hanging in the sky.

On 23 Sep 2003 21:12:20 -0700, (Coppy
Littlehouse) wrote:

Walter Scott Houston reports that he used an OIII filter naked eye to
view the California Nebula, on page 34 of Deep-Sky Wonders. He did it
from the dark skies of Mexico, in the winter.

I've used a narrowband nebula filter to view the North America nebula
naked eye from even somewhat light polluted skies.

That's not as impressive as seeing the California Nebula, of course.


Paul Below
Battle Point Astronomical Association
Bainbridge Island, WA, USA
http://bainbridgeisland.org/ritchieobs/