Re: [APML] Feldstein adapter, FS-102, T III

["Richard Crisp" <rdcrisp@earthlink.net>]

I've made a number of adaptor sets for the FSQ /filter wheels/ focusers (and
for other scopes) that have minimal back focus requirements. I can build
basically anything in my shop for solving this class of problems.

here are some things I have done recently:

http://www.rdcrisp.darkhorizons.org/sbig_fli_cfw_page.htm

http://www.rdcrisp.darkhorizons.org/FSQ106_FLI_SBIG_page.htm

the FSQ set is nearly identical to what I made for my AP Traveler: it
differs only in one element. I can make an interchangeable set if desired.

http://www.rdcrisp.darkhorizons.org/camera_rotator_for_c14_page.htm

http://www.rdcrisp.darkhorizons.org/mirror_locks_to_solve_c14_page.htm


Since the Christmas shutdown will be happening soon, I will be having some
time to make such "plumbing"

If anyone is interested please contact me off-list.

here area few  images enabled by this hardware:

http://www.rdcrisp.darkhorizons.org/ngc2244_rosette_s2hao3_mosaic_page.htm
(minimal back-focus adaptors, Traveler)

http://www.rdcrisp.darkhorizons.org/vdb142_dark_nebula_ha_page.htm (c14
mirror locks)

http://www.rdcrisp.darkhorizons.org/m27_dumbbell_nebula_hao3b_page.htm (c14
mirror locks)

http://www.rdcrisp.darkhorizons.org/veil_nebula_region_page.htm (minimal
back-focus adaptors, FSQ)

etc





----- Original Message -----
From: "Gene Horr" <genehorr@houston.rr.com>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Thursday, December 11, 2003 11:53 AM
Subject: RE: [APML] Feldstein adapter, FS-102, T III


> -----Original Message-----
> From: astro-photo-bounces@seds.org
> [mailto:astro-photo-bounces@seds.org]On Behalf Of Alan Voetsch
>
> > Those are the positives, I guess it's time to hear any negatives.
>
> Does the "Feldstein" provide small or large SCT threads?  I would
> guess the smaller, in which case (1) you'll likely get vignetting
> and (2) it would prevent using the reducer/corrector.
>
> I doubt that you'll have the back focus to use it with the FSQ.
>
> Gene Horr
> genehorr@houston.rr.com
>
> _______________________________________________
> Astro-Photo mailing list
> Astro-Photo@seds.org
> http://seds.org/mailman/listinfo/astro-photo

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