News of TAK-UW series sale

[Bergkamp_]

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News of TAK-UW series sale

2011 July 15th

TSA and TOA + 35 [huratsutona], such as FSQ that way delivers that non aberration image to the eye and Mewlon-CRS, the eyepiece which is necessary in flat field non aberration optical system of [takahashi]. TAK-UW ([tatsukuyudaburiyu]) the series, apparent field of view 90 degree it is the super wide angle which is said, but the optical design throughout sharp of the stellar image, it is the eyepiece for the celestial body which it develops as most important item.
* TAK is term of endearment in the foreign country of TAKAHASHI.

* The eyepiece which that way delivers sharply the image of the super advanced telescope to the eye
The new generation eyepiece TAK-UW series of [takahashi], apparent field of view 90 degree it is the super wide angular eyepiece which is said, but development policy width of range of vision compared to, is the eyepiece for the celestial body which designs the pursuit of the sharp stellar image of superlative as most important item. The aplanatic lens the greatest in the world 35 [huratsutona] are combined to TOA-130 was designated as standard in development, in order for that real image to become the complete afocal image, calculation was repeated. When as TAK-10UW it compares with LE-10 of our company which becomes the same magnification ratio, 5%, at strike rail ratio around as many as 80% or more has improved truly at strike rail ratio of the central image. When flat field it combines with the object glass, the wide sight like panorama the sharp stellar image spreads range of vision extensively all over. Conversely in coma and the object glass where astigmatism exists, as quite looked at the spot diagram of design value, it can look at the deterioration of the peripheral image in the object glass. The non aberration objective type tube of [takahashi] as for errand, please enjoy the panorama of the outer space by all means with combination with the TAK-UW series.

* The eye relief and the spherical aberration revision of the pupil which are optimum to super wide angle
Apparent field of view 90 degree in the super wide angle which is said how making the eye relief long, when it uses the glasses, it cannot look around all sight at one time. Enjoying panorama outer space with the super wide angular eyepiece, to receive, removing the glasses by any means, putting the naked eye on the eye point, it means to move the eyeball. In that case, the eye point moves due to angle, when there is a spherical aberration of the generally known pupil, the blackout where the image disappears to be easy to happen is unpleasant. In the TAK-UW series, look around it is the range of sight even with glasses use, there is no spherical aberration of the pupil, it standardized to the eye relief 12mm which is settled in practical size. Because as for this, rather than above necessity adhering to the length of the eye relief, you adhered to the good quality of the stellar image, is. The fact that the glasses are truly necessary is, when it is the astigmatism, but like the TAK-UW series in case of the eyepiece below focal length 10mm, pupil diameter to become small, because it is in a state where the pupil has been squeezed it becomes difficult to receive the influence of the astigmatism.

* Rubber aim attaching eyecup of working
Way it is easy to put the eye in position of the eye point, as for the eyecup it is designed in such a way that it can be moved back and forth. The user way when the position where it is easy to exclude can be decided simultaneously, the rubber aim which also protection and stray light prevention of the glasses combine has been attached.

* [takahashi] make eyepiece adapter corresponding falling prevention grooved sleeve
In addition to locking the heavy eyepiece securely, that you remove and are easy still are difficult to fall, it is the sleeve which answers to the topic which says and is contrary. The groove where it adjusts to the rotary type fixed ring of our company is cut in the 31.7mm size sleeve, at the extent where fixed ring loosens a little there are no times when the eyepiece falls. In order to be easy to pull out in the groove, because taper angle is acquired, when it is to it loosens, you can remove until now to sort.

* Stray light measure
Because the lens quantity to be many is the wide angular eyepiece whose also curvature is hard, the lens administering multiple coating extensively as a ghost, and a flare measure it tries not to occur to the utmost, inside the eyepiece matting paint is made all parts, executes ink coating in [renzukoba] and endeavors to the improvement of contrast.
Specifications

Focal length

Lens constitution

Size

Mass
TAK-3.3UW
3.3mm

10 6 groups

φ60×140mm

470g
TAK-5.7UW
5.7mm

10 6 groups

φ60×130mm

450g
TAK- 7 UW
7mm

8 5 groups

φ60×120mm

430g
TAK- 10UW
10mm

8 5 groups

φ60×115mm

420g

< Common specification >
- You happen to see, sight: 90°
- Eye relief: 12mm
- You install, size: φ31.7mm
Price (including tax)
TAK-3.3UW
¥75,600
TAK-5.7UW
¥75,600
TAK- 7UW
¥65,100
TAK-10UW
¥65,100
Sale due date
July 27th

[rcj]

lol! they make ethos lines look cheap and economical! gasp!

[shirox]

Wow the price is frigging expensive!

[rcj]

wait a minute! look closely.....check out the spelling of "eyepiece" on the barrel.....

http://www.takahashijapan.com/ct-news/n ... ak-uw.html