John Owen 6" refractor

[rl]

A review I've been meaning to finish for some time....word file uploaded.

John_Owen_6 inch_refractor.docx

[Stu]

Great review Richard. I wondered what happened to that scope, and whether it was any good or not. Now I know! A lovely piece of kit, and quite a bargain too  

[Doc]

Very nice read Richard really enjoyed it.

Great scope and it looks well built.

[JeremyS]

Great story, great scope

[Saganite]

Highly enjoyable read. Thanks.

[sloz1664]

Fabulous review Richard. Makes me want a large refractor some day.

Steve

[Dr_Ju_ju]

Something to aim for, well done

[DirkSteele]

A thoroughly enjoyable read! Thanks for sharing that with us all.

[JAO]

A very engaging read indeed. Many thanks for sharing this. The  instrument sounds like a serendipitous find and its clearly in a good home. As you say, JO made a small number of these triplets, I am aware of a couple of others, but I wonder where the other instruments now reside?

[Telescope40]

Richard. A crackerjack read. Enjoy 

John 

[rl]

Thanks all for the encouraging feedback guys...there's a couple of other slightly unusual items I might review in due course.

RL

[John]

Very enjoyable review Richard - thanks for posting the link

I think I fancied myself as a "Victorian gentleman astronomer" when I bought my Istar 6" F/12 the year before last - it was only an achromat but quite a handful !

The problem was that I did not have a "Victorian gentlemans observatory" to house it

I'm sure that I've seen a John Owen 6" triplet for sale quite a while back but I think that was F/12 or possibly even F/15 ?. Did he make even longer ones than your F/10 ?

[rl]

John...

As far as I am aware these were made as f/9 or f/10 only but I'm prepared to be wrong on this one. At f/15 a doublet would be pretty much colour-free making the extra cost and effort pointless. I'm just amazed at just how well it works..it seems to do everything a decent 6" frac is supposed to do. 

RL

[John]

42 minutes ago, rl said:

John...

As far as I am aware these were made as f/9 or f/10 only but I'm prepared to be wrong on this one. At f/15 a doublet would be pretty much colour-free making the extra cost and effort pointless. I'm just amazed at just how well it works..it seems to do everything a decent 6" frac is supposed to do. 

RL

Thanks Richard.

I really like long(ish) triplets - my TMB/LZOS 130 F/9.25 is superb

 

[John]

21 minutes ago, John said:

Thanks Richard.

My TMB/LZOS 130 F/9.25 is the only long(ish) triplet that I've used but it is excellent.

 

[Space Hopper]

Thankyou for posting Richard.

Great read.

[Panagiotis Papadakos]

Hello everyone,

does anybody knows if I can somehow contact John Owens?

I have one 7'',  106'' focal length doublet that he signed on 6/90 and I would like to learn more info about this lens (oil-spaced or air-spaced)?

Edited September 9, 2019 by Panagiotis Papadakos