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More pictures of 105EDFS and other accessories
Imagine an Apo refractor with a 105mm (4.1") aperture, focal ratio of f6, in a tube assembly that has an overall length of 19"! The 105 Traveler is the culmination of years of optical research by Roland Christen of Astro-Physics aimed at developing a very fast and portable telescope that will allow you to enjoy sharp, high-contrast images wherever you go.
The Traveler is an awesome performer both at night and during the day due to the superb figure of the lens and extremely efficient design of the optical system. Based on light gathering area alone, the Traveler has 36% more light grasp than a 3.5" Maksutov and 10% more light grasp than a 100mm refractor.
During the daytime, delicate detail and vivid colors of flowers and wildlife are a true joy to observe. When viewing at night, the high light transmission of the extremely pure optical glass becomes immediately apparent. With a 2" widefield eyepiece, we have seen the entire Veil Nebula, including the very faint inner region, all in one eyepiece field of view. The North American Nebula region is so bright and clear, it looks like a deep-sky astrophoto. Pop in a high-power eyepiece, and you will be rewarded with truly stunning views of the Moon and planets. Jupiter will amaze you with sharp resolution of the bands, festoons, white ovals and the Great Red Spot. This scope shows detail on Saturn and Mars that rival views in much larger instruments.
The Traveler is a fabulous astrograph for film or CCD. With a Pentax 6 x 7cm camera coupled with our 2.7" field flattener specifically designed for this instrument (67PF462), you can capture 5.6 x 6.6 degrees of stunning star fields, clusters and nebulas at f6! This same field flattener can be coupled to your favorite SBIG or FLI CCD camera (with or with out the color filter wheel) by means of a simple adapter. If a faster focal ratio in a 35mm format is desired, use our Telecompressor (27TVPH) for f4.5, or our 2x Barlow (BARCON) for f12 exposures. Be sure to check out the exquisite images in our gallery that have been taken with this telescope.
Whether traveling to exotic eclipse locations, your favorite camping spot, bird watching expeditions or just into your backyard, this little gem will provide you with hours of observing pleasure.
Specifications| Color correction | Less than 0.01% focus variation from 405nm to 706nm (r to h wavelengths). Color correction curves. |
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Clear aperture |
105mm (4.1") |
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Focal length |
610mm (24") (actually f5.8) |
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Resolution |
1.1 arc seconds |
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Coatings |
Multi-layer, overall transmission greater than 97% in peak visual wavelengths |
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Magnification range |
12x to 400x |
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Tube assembly |
Black finish, 19" aluminum tube, fully baffled, permanently aligned cell construction; flat black interior, engraved focuser |
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Focuser type |
2.7" I.D. Astro-Physics rack & pinion focuser, 4.15" travel; 2" and 1.25" adapters; 2.5" extension |
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Telescope length |
48cm (19") w/ dewcap fully retracted |
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Weight with dewcap |
9 lbs. (4 kg) |
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Carrying-case type |
Custom padded soft case |
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Case outside dimensions |
21" x 10.8" x 7" (53cm x 27cm x 18cm) |
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Weight of case |
3.5 lbs. (1.6 kg) |
| 35mm Photographic field at prime-focus | 2.3 x 3.2 degrees @ f5.8 |
| 35mm Photographic field with telecompressor |
2.9 x 4.1 degrees @ f4.5 |
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35mm Photographic field with 2x Barlow |
1.1 x 1.6 degrees @ f11.6 |
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6x7cm Photographic field at prime focus |
5.6 x 6.5 degrees @ f5.8 (vignetted) |
Dyer, Alan. "Astro-Physics Big & Small, Astronomy, September 1993, pp.62-67.
Support
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 Astro-Physics.com website to find accessories, replacement parts or learn about possible upgrades for your scope.
Copyright © 2004 - 2019 Astro-Physics Inc.
All rights reserved.
Last modified:
March 11, 2019
Astro-Physics, Inc.
11250 Forest Hills Road, Rockford, IL 61115, U.S.A.
Phone: 815-282-1513 Fax: 815-282-9847
