Archive for the ‘Telescope Reviews’ Category

Tele Vue One Inch Accessory Tube Review

PRICE:40

WARRANTY:

This is a spacer ring required to provide the appropriate distance between the NP127is and your digital or CCD camera. This product is made of black anodized aluminum. It is designed with internal anti-reflection threads to improve contrast.

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OPTICAL TUBE OTA SPECIFICATIONS

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OPTICAL MIRROR/LENS SPECIFICATIONS

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TELESCOPE MOUNT & GOTO SPECIFICATIONS

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ACCESSORY SPECIFICATIONS

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KEYWORDS: 08429,8429,tele vue, televue, accessory, tube

Orion AstroView 6 Equatorial Reflector Telescope Review

PRICE:419.95
WARRANTY: One year

If you’re ready to graduate from a small scope or want your first scope to have more light-gathering power than typical starter scopes, step up to the AstroView 6. Its 150mm parabolic mirror has a focal length of 750mm (f/5), so it offers generous wide-field views of deep-sky objects when used with the included 25mm Plossl. For lunar and planetary study, use the 10mm Plossl (also included). The AstroView’s EQ-3 equatorial mount features manual slow motion controls, which allow you to center and track objects in the viewing field. An optional single- or dual-axis EQ-3 DC drive is also available for electronic guiding. Built in to the equatorial head is a polar-alignment scope for precise orientation on celestial north or south. The mount couples to a sturdy adjustable aluminum tripod with accessory tray. Includes 6×30 finder, rack-and-pinion focuser, and four-vane adjustable secondary mirror support.

Use: Astronomy
User Level: Intermediate

OPTICAL TUBE OTA SPECIFICATIONS

Aperture: 150mm
Focal Length:750
Focal Ratio:5
Optics Type:Parabolic
Glass Material:Soda-lime plate
Resolving Power:0.77
Limiting Stellar Magnitude:13.6

Tube Material:Steel
Optical Tube Length / Focal Length:26.5 in.
Optical Tube Weight:9.1 lbs.

OPTICAL MIRROR/LENS SPECIFICATIONS

Optical Design: Reflector
Optical Quality: Diffraction limited
Secondary Mirror Obstruction:34%
Secondary Obstruction:12%
Mirror / Glass Coatings: Aluminum and Silicon Dioxide

TELESCOPE MOUNT & GOTO SPECIFICATIONS

Tripod Material: Aluminum
Mount Style: Equatorial

Bearing Material:Friction bearings

Astroimaging Capability:Lunar and planetary
Motor Drive Compatibility:C
Computerized Compatibility:Not compatible
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ACCESSORY SPECIFICATIONS

Finder:6×30
Focuser:1.25in. Rack-and-pinion

KEYWORDS: 150mm,6,750mm,750mm focal length,9827,AstroView,AstroView 6 EQ Reflector,Astronomy,EQ,EQ-3,Equatorial,Level 2,aluminum tripod,astroview,eq-3 mount,equatorial mount,f/5,parabolic,polar-alignment,rack and pinion,reflector,scope,stargazing,09827,Orion Skyview 6 Deluxe EQ,

Celestron EdgeHD 925 OTA Review

PRICE:1,799.00
WARRANTY: Two year
MANUFACTURER: Celestron

Celestron’s innovative new EdgeHD telescopes are aplanatic Schmidt Cassegrain models designed to produce aberration-free images across a wide visual and photographic field of view. Celestron EdgeHD optics produce a focal plane more than three-times flatter than a standard Schmidt Cassegrain telescope. This guarantees you visibly sharp stars across some of the largest CCD chips available today. Superior edge performance not only creates rounder, more pleasing stars but actually improves the resolution and limiting magnitude when compared to telescopes of equal aperture. With Celestron’s High Definition optics you will be able to capture the faintest of galaxies all the way to the corner of your full frame camera chip. Coupled with Celestron’s XLT coating group on every surface, EdgeHD optics gives you maximum light throughput across the widest visual and photographic spectrum. The EdgeHD tube has been redesigned with top-notch features to make sure you get the most from your optics each and every night. Mirror locks hold the mirror in place and reduce image shift when rotating the tube around the mount. Flexible rods allow the mirror to be held in place without putting any force or pressure on the mirror, keeping the image centered in the eyepiece (or chip). Cooling tube vents located on the rear cell allow hot air to be released from behind the primary mirror. Each vent has an integrated 60 micron mesh filter guaranteed to let warm air out without letting dust in.

Use: Astronomy
User Level: Expert

EdgeHD is an aplanatic Schmidt telescope designed to produce aberration-free images across a wide visual and photographic field of view. The optical system was designed to reduce more than just off-axis star coma, but also to give an astrograph quality flat focal plane all the way to the edge of the field of view.
Video Rating: 4 / 5

OPTICAL TUBE OTA SPECIFICATIONS

Aperture: 235mm
Focal Length:  2350mm
Focal Ratio:  f/10
Optics Type: Spherical
Glass Material:
Resolving Power: 0.49
Limiting Stellar Magnitude: 14.4

Tube Material:Aluminum
Optical Tube Length / Focal Length:22.0 in.
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OPTICAL MIRROR/LENS SPECIFICATIONS

Optical Design:  Aplanatic Schmidt
Optical Quality: Diffraction limited
Secondary Mirror Obstruction: 36%
Secondary Obstruction: 13%
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TELESCOPE MOUNT & GOTO SPECIFICATIONS

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Mount Style: Optical Tube without Mount

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Astroimaging Capability: Lunar, planetary and long exposure
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ACCESSORY SPECIFICATIONS

Finder:9×50
Focuser:Internal

KEYWORDS: 09554,9554,Celestron, edge hd, edgehd, aplanatic, high definition,high-definition, astroimaging, astrophotography, astrograph, flat-field,coma-free, SCT, 9.25″, edgehd 925, edgehd 9.25″, OTA

Celestron EdgeHD 925 OTA Forum Discussions

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