Celestron telescope refractor cassegrain eyepiece 1.25" 42mm Ultima 1988 Japan

Description

This auction is for
1988 Celestron (Nihon Seiko or Vixen of Japan) 1.25-inch Ultima 42mm. In this rare offering it will come with BOTH original dust caps, the original, large rubber winged eye guard, and the original baggy for the eye guard.
Inspect the photos closely. This is in top collector's grade condition and is simply beautiful in that it has survived this long in this kind of condition. The only thing that could have made this better was having the original cream-and-orange striped box. The Ultima 42mm, like the Ultima 24mm, is the rarest of the 1.25-inch size Ultimas to come across. This particular model was very expensive and never ever offered as an inclusive eyepiece option on ANY of Celestron's refractors or schmidt-cassegrains.
And unique is the 42mm focal range as possibly the longest EVER focal length offered in a 1.25-inch barrel.
Model:  Ultima 42mm
Barrel size:  1.25-inches
Design:  5-element plossl
Optics:  fully multi-coated
Field of view:  36-degrees
Eye relief:  32mm
Threaded for filters:  yes
Materials:  milled brass, milled anodized aluminum, rubber grip, optical glass
Weight:  7.1 ounces
In many of my personal reports I have cataloged for my own, massive references on vintage telescopes, I use Ultimas as a benchmark for visual optical quality confirmation as these eyepieces are so well made and produce such bright images (especially to the edge of field), if you see fault in your images, it will not be this eyepiece, but within the telescope itself. I do not pull-out my Ultimas to any telescope on any given night. The seeing must be steady, the air dry and the telescope worthy.
Any Ultima eyepiece from Nihon Seiko and/or Vixen of Japan will give paramount sharpness and detail in your Takahashi FC-100, Orion VX-90 Fluorite, Astro-Physics Star12 ED, Celestron C11 Edge, Meade Maksutov 7, Ceravolo HD145, or Pentax 105SD to name a few of many fine examples of top grade telescopes in which this eyepiece will help fully exploit their optical greatness.
A pinpoint-to-the-edge 36-degree field of view awaits your eye. The Ultima 42 has one of the very longest (if not THE LONGEST) eye relief I have ever seen in a 1.25-inch barrel ocular. This means you'll get the entire view in even with eyeglasses left on. Outstanding to use on the Moon, M31, M42, the Double Cluster, Sagittarius Star Cloud region, Orion's Horsehead regional belt stars with  H-beta threaded filter, M45, and many other large deep sky objects.
The top-end optical perfection in the glass elements guarantees that in apochromat telescopes, the view will remain color free and there is NO introduced coma or astigmatism. Other than the narrower-than-normal field of view, which is absolutely inherit in an eyepiece barrel of this size with this large a focal length, it is faultless across the board.
Try this on NGC7331 in a Wilkinson, Beck, or Zambuto 10 to 16-inch mirror reflector. Find faint hazing of the Rosette Nebula around the Christmas Tree Cluster in your Meade 14 ACF LX200, C11 Edge, or Takahashi Mewlon 300; you will LOVE the sharpness and contrast!
Though not as rare, these Ultimas are identical to Orion's long-standing Ultrascopic line, which were manufactured by the same firm in Japan, and this also goes for the rarely-mentioned Parks Gold Series and Antares red-lettered and green-boxed plossls.
If you have an ocular turret with other additional Ultima eyepieces, they will be parfocal. I have done this both in my Takahashi FS-152sv and Takahashi FCT-150.
For a fun fact, this is one of the very earliest of the Ultimas you can find; the painted characters are Chevy orange, not ruby red, and is one of the defining features of a 1980s Ultima model.
Packed with great care. Higher cost in shipping indicates this MUST be fully insured to all global locations. For those in other nations, this can only go priority international so that it may receive full insurance benefits. WILL NOT SHIP in a USPS priority small flat rate box!! This eyepiece is too large and will bulge the dimensions; that box will NOT provide the protection this eyepiece deserves.