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WooHoo- finally found a 6" f5

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#1 scout72

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Posted 09 December 2012 - 11:56 PM

I have been waiting for one of these to show up and finally found this one today in Benicia, CA at an antique shop. It came as pictured on a nice Polaris mount with RA drive. The finder is funny- it is an old Visioflex meant for a rangefinder camera- has a 135mm lens on front. The lens is a beaut- coatings are perfect and not a scratch on it! Nice 32mm TV widefield came with it too. And it was cheap to boot! Sorry- not trying to gloat, just happy :-)

The lens cell housing is different on this one that most of the other homebrew ones like this I have seen and it is HEAVY.

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#2 scout72

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Posted 09 December 2012 - 11:57 PM

pic 2

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#3 scout72

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Posted 09 December 2012 - 11:57 PM

pic 3

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#4 scout72

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Posted 09 December 2012 - 11:58 PM

last ones:

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#5 tim53

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Posted 10 December 2012 - 12:12 AM

These things are fun in a really dark sky!

Here's one made by my late friend Dick Zanteson. The tube is a beautiful blue annodized, with a nicely machined backplate and a huge rack and pinion focuser made from a large binocular microscope.

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I need a dewshield! I've been using a paint bucket with the bottom cut out of it. Not very attractive, but it works okay.

-Tim.

#6 starman876

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Posted 10 December 2012 - 12:19 AM

Here is my 120mm deep sky scope

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#7 Ducky62

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Posted 10 December 2012 - 12:49 AM

Is this a Jaegers lens? Or some aerial photography lens?

Looks very cool. I'm just envious of you finding a Polaris RA drive

#8 starman876

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Posted 10 December 2012 - 12:49 AM

Tim
Go to Home depot and get a small roll of flashing aluminum.
Rolls easily into the proper diameter and some tape holds it in place. Easiest dewshield I have ever used.

#9 starman876

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Posted 10 December 2012 - 12:50 AM

That is a really nice deep sky scope. Love that finder that is truly different.

#10 mikey cee

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Posted 10 December 2012 - 01:00 AM

Those are most definitely six spacer Jaegers lenses. Nice scopes guys. ;) Mike

#11 dbledsoe

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Posted 10 December 2012 - 01:12 AM

Scout72,

You might want to hang on to the Leitz Visoflex and 135mm f/4.5 Hektor. Those are not low cost items.

If you want to off them let me know.

Don

#12 scout72

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Posted 10 December 2012 - 01:39 AM

Thanks for the comments - Tim- love the focuser on yours! Mine came with the Celestron flexible dew shield from 6" sct- works well.

Don- unfortunately this is not the Leitz visoflex- it is a Japanese version- same with the lens = "Sun Telephoto 135mm f3.8" - definitely cool but not top dollar stuff.

#13 dbledsoe

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Posted 10 December 2012 - 02:00 AM

Scout72,

You might want to hang on to the Leitz Visoflex and 135mm f/4.5 Hektor. Those are not low cost items.

If you want to off them let me know.

Don


Scout72'

Do not discount it too easily. A lot of vintage Japanese (Leica knock off stuff) has a lot of value in its own right I.e., highly desirable to vintage rangefinder camera buffs.

Don

#14 starman876

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Posted 10 December 2012 - 10:31 AM

six spacer jeagers lenses? Were all jeagers large lenses spaced with six spacers? I have a 6" F8 and have been trying to figure out the spacing of the lenses. I must admit these 6" lenses provide awesome views of the night skies. However, when I bumb up the power on this lens it is not happy. I could understand that with an F5. However, this is an F8 and should be more forgiving.

#15 starman876

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Posted 10 December 2012 - 10:35 AM

Another question. I see that it looks like there are spacers on the back of flint also. Is this to protect the flint and cushion it from back of the cell?

#16 mikey cee

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Posted 10 December 2012 - 11:20 AM

Yes my Jaegers 6" f/8 has 6 spacers. Never seen a 6" Jaegers without them. The teflon coated spacers mounted on the retension ring are to protect the flint. My lens takes high power well. I always use a 6mm Or for 203x and can use the Jaegers 3x barlow for 618x. Never noticed anything out of the ordinary with the seeing conditions as they were at the time. I regularly compare high powered images between my Jaegers and the 10" Istar....just a huge light gathering difference that's all. Mike

#17 scout72

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Posted 10 December 2012 - 12:58 PM

Yeah- I thought the rear spacers were weird too (there is a ring on my Jaegers 6" f10 but not tabs like these) and actually the cell is a little different than my other Jaegers and others I have seen but it is entirely possible that the cell was purchased/made separately from the lens and the tab spacers were just what the ATM'er had on hand-

#18 starman876

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Posted 10 December 2012 - 02:47 PM

You sure that those spacers are not between a third lens?
Cannot tell in the picture, but that is normally where I have found more spacers.

#19 scout72

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Posted 10 December 2012 - 03:04 PM

Hehehe- an air spaced 6" f5 triplet? Nah- didn't get THAT lucky- the rear spacers are between the flint and the retaining ring- not sure how they would be held in place against rotation like this (or why for that matter), but haven't taken it apart to look yet

#20 CHASLX200

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Posted 10 December 2012 - 06:25 PM

six spacer jeagers lenses? Were all jeagers large lenses spaced with six spacers? I have a 6" F8 and have been trying to figure out the spacing of the lenses. I must admit these 6" lenses provide awesome views of the night skies. However, when I bumb up the power on this lens it is not happy. I could understand that with an F5. However, this is an F8 and should be more forgiving.


I used a 6" F/10 Jeagers before and the color was too much for my taste.

Chas

#21 tim53

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Posted 10 December 2012 - 06:46 PM

I think my 6" f/15 has a tad too much color even. But I'm pushing the envelope with wanting high resolution planetary detail.

The 6" f/5 is a great telescope for wide field scanning of a really dark sky. So enjoyable!

-Tim.

#22 mikey cee

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Posted 10 December 2012 - 07:06 PM

The spacers are adhesive and wrapped onto the retaining ring so they won't slip around or off. ;) Mike

#23 starman876

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Posted 10 December 2012 - 10:07 PM

You really need to stop monkeying around with achromats if you want planetary detail with out color. :roflmao:






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