2" 90° Apparent Field Eyepieces Announced

I just looked at the Burgess Optical web site (burgessoptical.com) and
noticed the announcement of "Hyper Wide Angle" eyepieces, with a 90°
apparent field. There's a 29mm and well as a number of lesser focal
length eyepieces. No photos or prices yet, or any hint of the lens
design.

My experience with Burgess has been excellent value for the money. But
I do wonder about the optical characteristics of this eyepiece.

Clear skies,
Shneor Sherman

My experience with Burgess has been excellent value for the money. But
I do wonder about the optical characteristics of this eyepiece.

Clear skies,
Shneor Sherman

Probably best to take the wait and see attitude if something isn't currently
yet available. Burgess Optical has been somewhat optimistic in the past about
delivery dates...

Jon

(Jon Isaacs) wrote in message ...
My experience with Burgess has been excellent value for the money. But
I do wonder about the optical characteristics of this eyepiece.

Clear skies,
Shneor Sherman

Probably best to take the wait and see attitude if something isn't currently
yet available. Burgess Optical has been somewhat optimistic in the past about
delivery dates...

Jon

Here's some more info from Bill Burgess: It's a 7-element design, all
ED glass,"broadband multicoatings on all air-to-glass surfaces", and
pinpoint stars to the edge down to f/3.5. Availability is at least 60
days out.

The part about pinpoint stars to the edge of a 90° apparent field 29mm
eyepiece sounds very attractive. Maybe some of our eyepiece design
mavens can tell us why this is either impossible or comes at the price
of field curvature, loss of contrast or some other desirable optical
characteristic. Or not.

Clear skies,
Shneor Sherman

Here's some more info from Bill Burgess: It's a 7-element design,

**** all ED glass,****

?????

"broadband multicoatings on all air-to-glass surfaces", and
pinpoint stars to the edge down to f/3.5. Availability is at least 60
days out.

I'd have to see this first.

Clear Skies

Chuck Taylor
Do you observe the moon?
Try http://groups.yahoo.com/group/lunar-observing/
And the Lunar Picture of the Day http://www.lpod.org/
************************************

The part about pinpoint stars to the edge of a 90° apparent field 29mm
eyepiece sounds very attractive. Maybe some of our eyepiece design
mavens can tell us why this is either impossible or comes at the price
of field curvature, loss of contrast or some other desirable optical
characteristic. Or not.

Clear skies,
Shneor Sherman

**** all ED glass,****
"broadband multicoatings on all air-to-glass surfaces", and
pinpoint stars to the edge down to f/3.5. Availability is at least 60
days out.

What a bunch of crap. Wow! he must think the amateur community is gullible!

Roland Christen

"Chris1011" wrote


**** all ED glass,****
"broadband multicoatings on all air-to-glass surfaces", and
pinpoint stars to the edge down to f/3.5. Availability is at least 60
days out.

What a bunch of crap. Wow! he must think the amateur community is
gullible!

Roland Christen

What -- you mean we're not?? Heck, they're probably not available for... 90
days!

"Chris1011" wrote


**** all ED glass,****
"broadband multicoatings on all air-to-glass surfaces", and
pinpoint stars to the edge down to f/3.5. Availability is at least 60
days out.

What a bunch of crap. Wow! he must think the amateur community is
gullible!

Roland Christen

What -- you mean we're not?? Heck, they're probably not available for... 90
days!

**** all ED glass,****
"broadband multicoatings on all air-to-glass surfaces", and
pinpoint stars to the edge down to f/3.5. Availability is at least 60
days out.

What a bunch of crap. Wow! he must think the amateur community is gullible!

Roland Christen

Here's some more info from Bill Burgess: It's a 7-element design,

**** all ED glass,****

?????

"broadband multicoatings on all air-to-glass surfaces", and
pinpoint stars to the edge down to f/3.5. Availability is at least 60
days out.

I'd have to see this first.

Clear Skies

Chuck Taylor
Do you observe the moon?
Try http://groups.yahoo.com/group/lunar-observing/
And the Lunar Picture of the Day http://www.lpod.org/
************************************

The part about pinpoint stars to the edge of a 90° apparent field 29mm
eyepiece sounds very attractive. Maybe some of our eyepiece design
mavens can tell us why this is either impossible or comes at the price
of field curvature, loss of contrast or some other desirable optical
characteristic. Or not.

Clear skies,
Shneor Sherman

Here's some more info from Bill Burgess: It's a 7-element design, all
ED glass

What a load of crap! All ED my foot. If ED glass was ever used in eyepieces
they would have narrow fields with very poor off-axis corrections.

Roland Christen