Here you go. At 100$ per element.
---------
Phil Chambers [ptchamb@No-Spam] (S.F. Bay Area - Calif. USA)
---------- Forwarded message ----------
Date: Mon, 22 Dec 2003 22:56:31 -0000
From: Dave Kerr <dsktc@No-Spam>
Reply-To: sct-user@No-Spam
To: sct-user@No-Spam
Subject: [sct-user] Astro Physics 5mm Super Planetary Eyepiece
At 4:43 P.M., Roland Christen announced on the AP
Yahoo Group that the first in the series of Super Planetary
Eyepieces is available. It is a 5mm with a very limited number
available now.
Here are Roland's comments:
"I just finished assembling and testing some 20 pcs of 5mm Super
Planetary
eyepieces from optics supplied by Aries. See the final assemblies
here:
http://www.astro-physics.com/products/accessories/visual_acc/spl05.htm
We have a limited number for sale at $245 each. Other sizes will be
coming in
the next two months. I will probably do the 8mm next, then 4mm, 6mm,
10mm.
Other projects are on the drawing board. Call Christine at Astro-
Physics if you
wish to order one. First 17 will get them this week. PLEASE: DO NOT E-
MAIL ME
AT MY ADDRESS. I will not process your order.
Some specs and features:
Focal length - 5.0 mm
Field size - 3.9mm
Apparent field - 42 degrees
Eye relief - 7mm
3 Elements Broadband multi-coated
The practical eye relief is actually longer than stated. You can see
the
entire 42 degree field with the eye 9mm from the rear lens. You can
see a full
30
degree field with your eye placed 11 mm from the rear lens.
In addition, the eyepieces are individually inspected for inclusions,
bubbles
etc. Valery told me the radii are tightly controlled with a special
low power
microscope using interference fringes. The eye lens has the best
possible
coating with overall 0.1% overall reflection. The field lens has .25%
overall
average reflectivity. The eyepieces are very dark, even compared to
my Zeiss
Abbe
Orthos. They are almost black in my famous "sky test" (other eyepieces
literally glow under this test).
The degree of correction for astigmatism is better than Orthos for
same size
field. There is no noticeable pincushion or barrel distortion. Other
stuff I
have already mentioned in past posts to this group."
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