6 Inch Refractor Components

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Bob Yoesle
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6 Inch Refractor Components

Post by Bob Yoesle » Mon Mar 25, 2013 1:31 am

[strike]ATTENTION MOD FANS!

Due to a change in solar telescope plans, I am selling new and unused 6 inch folded achromatic telescope optical components.

Here's what you could accomplish (see bottom of page: http://www.istar-optical.com/istar_076.htm ):



Here are the components:

ISTAR Optical 150/1500 fully multi-coated 6 inch f 10 Achromatic Objective in CNC machined cell ($519 new).
ISTAR Optical CNC machined Counter Cell for the above ($227 new).




Both as a package for [strike]$675[/strike] $600 and will include push-pull stainless steel adjustment cap-head metric bolts, the ISTAR test report, and cell/counter cell schematics.[/strike] BOTH ARE PENDING


STILL available: two Zerodur 1/20 wave aluminized optical flats of 3 and 4 inches in diameter that were to be used to produce a compact folded refractor design.

3 inch $200.
4 inch $300.

Both for $450






[strike]Package price for all is $1100, and I will pick up shipping in CONUS.[/strike]

Payment via bank draft, USPS money order, or personal check (must clear before shipment).

If you wold like a collimator lens (new) for a 60 mm aperture telescope mod, and/or a field lens (which is a surplus used lens) to optimize the collimated beam, these are available for $150:





Here is an Astronomy Now review of the ISTAR 6 inch f 10 telescope:
http://neilenglish.net/adentures-with-t ... -achromat/





Thanks for looking -


Bob B)
Diagonally parked in a parallel universe.

Curiosity is the father of knowledge; uncertainty is the mother of wisdom.

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colinsk
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Re: 6 Inch Refractor Components

Post by colinsk » Tue Mar 26, 2013 7:46 pm

What are the focal lengths of the collimation and field lenses?
Thank you, Here are some references I have collected.



Etalon Article Part I

Etalon Article Part II

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Bob Yoesle
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Re: 6 Inch Refractor Components

Post by Bob Yoesle » Wed Mar 27, 2013 2:24 am

Hi Colin,

The collimator is an achromat with a 600 mm FL, the field lens is a singlet DCX, with a 535 mm FL.

Bob B)
Diagonally parked in a parallel universe.

Curiosity is the father of knowledge; uncertainty is the mother of wisdom.

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