Michael A. Stecker
mastecker@gmail.com

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Astro-Physics 130 mm (5-inch) f/6 Starfire EDF refractor hardware accessories

Nikon T-ring is connected to rear flange of Astro-Physics 130 mm (5-inch) f/6 Starfire EDF refractor field flattener.  The standard T-ring insert must
be removed to fit on the rear flange of the field flatter.  The inside diameter of the T-ring should then measure 1 15/16 or 1.92 inches. 
No 2-inch tubes are used with the photographic assembly.

View of the inside of a Nikon T-ring after the standard insert was removed.  Inside diameter now measures 1 15/16 or 1.92 inches.  The rear end of
the AP field-flattener slips into the ring and is fixed with three set screws.

Rear assembly of field-flattener, rear camera connecting flange and Nikon T-ring for the Astro-Physics 130 mm (5-inch) f/6 Starfire EDF refractor. 
An extension tube is screwed in between the front of field flattener (where red protective cap is seen) and rear of the telescope so one can achieve
focus with a camera.
If I cam find it, I also have a focal reducer which can be used instead of the field flattener.  This will make the telescope effectively
f/4.5 (fl = 585 mm) instead of the standard f/6 (fl = 780 mm).

Astro-Physics 130 mm (5-inch) f/6 Starfire EDF refractor's 2.7-inch field-flattener and front 2.5-inch long extension tube
(to achieve focus photographically)

Aluminum (1/2-inch thick) mounting platform for Astro-Physics 130 mm (5-inch) f/6 Starfire EDF refractor with Astro-Physics clamping mounting rings and Losmandy dovetail plates on both sides, top and bottom.

Nikkor ED 300 mm f/4 lens with infinity focus marked (astrophotographically determined with old Nikon F3 body)