160mm f/7.5 Starfire EDF - 6.3" aperture (160EDF)

The 160mm f/7.5 StarFire EDF not available to purchase and we do not have any plans to produce additional scopes with these exact specifications. This information is presented for present owners and those who are curious about its history.

160mm f/7.5 StarFire EDF, 900GTO German Equatorial Mount, Portable Pier, and other accessories.

This 160mm StarFire EDF was designed from the ground up as a brand new instrument, not a mere modification of one of our earlier products.

Lens: Our exceptional, multi-coated triplet, air-spaced apochromat uses the latest in multi-coating technology with the highest grade of optical glass to achieve exceptional image brightness and excellent color correction. The close air-spaced design results in rapid cooldown during nighttime temperature swings. Color correction is ideal for all visual and imaging needs. The 1200mm focal length allows a full range of eyepiece designs from simple to complex to produce extremely sharp planetary images. Performance has already become legendary among imagers.

Tube assembly: Multiple baffles reduce stray light to a minimum. The lens resides in a push-pull cell that maintains its collimation even under conditions of vibration during shipping. The new sliding dewcap has a built-in baffle to help prevent dew as well as block stray light.

Focuser: The 160EDF comes standard with our 4" greaseless focuser, which was designed to hold all types of heavy equipment, while still moving smoothly without image shift. A built-in collar allows the focuser to rotate a full 360 degrees to suit. Focus travel is a generous 105mm (4.1"), and is positioned so that the Baader Planetarium Mark V Binocular Viewer will come to focus without the 1.25x compensator. This allows the user to see glorious wide-field views with both eyes - a real treat.

The giant 4" focuser will allow you to enjoy any and all of your astronomy pursuits. The 4" ID of the drawtube will allow maximum coverage of the Pentax 6 x 7 cm negative for medium format photography. The inside of the drawtube has a series of knife-edge baffles for maximum contrast. Choose from a full line of photographic accessories for CCD imaging, 35mm and medium format film photography. In addition to an optional 4" Prime Focus Field Flattener, we offer a dedicated f/5.75 Flat-Field Telecompressor that is diffraction-limited over the entire 35mm field. Perfect for the new, large chips available today.

The Mach1GTO, 900GTO or 1200GTO German Equatorial mounts are all recommended for astrophotography, depending on your requirements for portability and the amount of wind you are likely to encounter at your photographic site.

Color correction Less than + - 0.005% focus variation from 405nm to 706nm (r to h wavelengths). Color correction curves.
Clear aperture 160mm (6.3")
Focal length 1200mm (47.2")
Photographic speed f/7.5
Theoretical Resolution 0.7 arc seconds
Coatings Multi-layer, broadband, overall transmission greater than 97% in peak visual wavelengths
Magnification range 20x to 600x
Tube assembly White, 6.5" aluminum tube, baffled, flat black interior, push-pull lens cell, engraved retaining ring
Focuser type 4.0" I.D. Astro-Physics rack & pinion focuser, 4.15" travel; 2.7", 2" and 1.25" adapters; 2.5" extension. Rotating collar
Telescope length 1067mm (42") w/ dewcap fully retracted
Diameter of Dewcap 194mm (7.625") OD including paint thickness
Weight with dewcap 27 lbs. (12.3 kg)
Carrying-case type Wood case with grey vinyl covering and foam-lined interior

Photographic Field
35mm Photographic field at prime-focus 1.1 x 1.6 degrees @ f7.5
35mm Photographic field with 2.7" telecompressor (27TVPH) 1.5 x 2.2 degrees @ f5.75
35mm Photographic field with 2x Barlow 0.55 x 0.8 degrees @ f15

160mm f/7.5 StarFire EDF with the dewcap in the retracted position

Sliding dewcap with built-in baffle

4" Focuser with standard knobs and Rotating Collar, shown with the 2" Adapter, and optional MaxBright Diagonal and Super Planetary Eyepiece


We have prepared some pertinent support documents relating to this scope and many of our other products on our Technical Support page. Please check there first to find the information that you need.

Upgrades and Spare Parts

Check out our website to find accessories, replacement parts or learn about possible upgrades for your scope.

Copyright 2012-2019 Astro-Physics Inc. All rights reserved.
Last modified: March 11, 2019

Astro-Physics, Inc.
11250 Forest Hills Road, Machesney Park, IL  61115, U.S.A.
Phone: 815-282-1513   Fax: 815-282-9847