New Vixen 100mm eyepiece (1.25")

[Piero]

Rather unusual specs for an eyepiece.

size:     Φ 50 × length 186 mm
weight:  180g

https://www.vixen.co.jp/product/35203_6/  

 

Edited April 1, 2018 by Piero

[Knighty2112]

Just did th conversion from Japanese Yen to British pound and it comes out at £35. Seems way under priced for such a size and FOV. Maybe this is a Japanese April fools!  

[Ruud]

[Sunshine]

Strangest looking eyepiece i have ever seen, why is it so long?

[Piero]

11 minutes ago, Sunshine said:

Strangest looking eyepiece i have ever seen, why is it so long?

I guess it's due to the long focal length of this eyepiece.  

In an F15 telescope, it would give an exit pupil of 6.66mm. Still, the FOV is incredibly small..     

 

Frankly, I don't understand Vixen's logic.. 

First, the extremely short focal lengths: HR 2.4mm, 2.0mm, 1.6mm; now this 100mm "MISSILE eyepiece" in 1.25" format. 

Edited April 1, 2018 by Piero

[Stu]

Bizarre! I would say April Fool, but I don’t think that is very Japanese, is it?

Congrats to Piero though, I don’t think I’ve seen a post before with all five ‘like’ emoticons used , although I did use thanks just to complete the set

[Ruud]

Yes, a finder eyepiece with an incredibly small fov. I think Vixen's logic is in the calendar. It's the right day for a joke.

[Piero]

2 hours ago, Stu said:

Bizarre! I would say April Fool, but I don’t think that is very Japanese, is it?

Congrats to Piero though, I don’t think I’ve seen a post before with all five ‘like’ emoticons used , although I did use thanks just to complete the set

Cheers mate!

[jkwhinfrey]

April Fool perhaps, but it turned up on CN on 30 March.

https://www.cloudynights.com/topic/612994-unusual-vixen-100mm-eyepiece/#entry8490661

New Vixen eyepieces have gone from 3.4mm to 100mm in a few days and missed out everything inbetween. I think they’ve got a plan

James

 

[Piero]

I don't know when it came out on the Vixen website. I was looking whether there were updates about the HR 3.4mm, and instead saw this new 100mm...! Not really the same thing.. not really! 

 

I'm kind of curious to know the eye relief for this new eyepiece...   

Do you think it is nearly as long as the top eye rubber?? If so, that seems to be about 7cm!  

Edited April 2, 2018 by Piero

[JeremyS]

3 hours ago, Piero said:

I was looking whether there were updates about the HR 3.4mm

Good to hear you are keeping an eye out for the HR 3.4 mm, Piero! Hopefully it will be available later this month. 

Edited April 2, 2018 by JeremyS

[25585]

8 hours ago, jkwhinfrey said:

April Fool perhaps, but it turned up on CN on 30 March.

https://www.cloudynights.com/topic/612994-unusual-vixen-100mm-eyepiece/#entry8490661

New Vixen eyepieces have gone from 3.4mm to 100mm in a few days and missed out everything inbetween. I think they’ve got a plan

James

 

Japan is across the IDL (International Date Line)

Perhaps a 50 Plossl with built-in Barlow 2x? If it's real. Note it's got Made in China on it. 

Or a Freudian competition with Masuyama

Edited April 2, 2018 by 25585

[Sunshine]

Its been almost three years now, has anyone tried this yet? it is still for sale which means they must be producing it, still. 

[Louis D]

Simon B on CN received one in 2018 and posted images in this posting.  I'm not sure if there are any actual reports of using it in a scope, though.

[Don Pensack]

I have.  It's 7x in my 4" apo and has a 11° apparent field.

The field looks like it is way off down a tube.

But, the true field is only 1.5° in that scope with the 100mm..

Since my 24mm APM yields a 2.2° field at 30x, I see no value in the Vixen eyepiece as a replacement for a finder scope.

In contrast, my 8x50 finder provides a 6° field, about 4x wider than the Vixen eyepiece.

It's not as wide as a typical finder scope in an 80mm scope with a 480mm focal length (2.3°)

This is one of those, "You made what?" products.

 

[rl]

Perhaps it's dual function. Can you turn it around and use it as the objective with one of their HR series to make a complete mini-scope?