Science Tech » Scopes & Optics » Telescopes » Beginner Astrophotography Telescopes Review
Beginner Astrophotography Telescopes Review
REVIEWS AND COMPARISONS
Displaying 2 - 10 of 11 « prev | next »
Ads
Top Ten Reviews no longer updates this category and keeps it here for archiving purposes only. It was last updated in August 2014.
Rankings
Displaying 2 - 10 of 11
Beginner Astrophotography Telescopes Review
Specifications
Optical Design
Ritchey-Chretien
Apochromatic refractor
Maksutov-Newtonian reflector
Ritchey-Chretien
Newtonian reflector
Ritchey-Chretien reflector
Refractor
Apochromatic refractor
Refractor
Apochromatic refractor
Modified Petzval Quadruplet
Optical Tube Construction
Low expansion carbon fiber
Aluminum, stainless steel
Aluminum
Enameled steel
Rolled steel
Steel
Powder-coated aluminum
All metal
Carbon fiber
Anodized aluminum
Aluminum
Mounting System
Vixen-style dovetail, Losmandy-style D-plate
universal adjustable
None included
Dovetail
None included
Vixen-style dovetail
Vixen-style dovetail
Standard bracket
Vixen-style dovetail
Vixen, Losmandy-style dovetail
None included
Aperture
203mm
80mm
190mm
200mm
200mm
152mm
70mm
80mm
70mm
60mm
85mm
Focal Ratio
f/8
f/6
f/5.3
f/8
f/4
f/9
f/6
f/6
f/6
f/6
f/5.3
Focal Length
1625mm
480mm
1000mm
1,600mm
800mm
1,370mm
420mm
480mm
420mm
360mm
450mm
Resolving Power
.57 arc sec.
1.45 arc sec.
.60 arc seconds
.58 arc sec.
.56 arc sec.
.76 arc sec.
1.6 arc sec.
1.45 arc sec.
1.6 arc sec.
1.9 arc sec.
1.36 arc sec.
Focuser Size
2 in. w/ 1.25 in. adapter
2 in. w/ 1.25 in. adapter
2 in. w/ 1.25 in. adapter
2 in. w/ 1.25 in. adapter
2 in. w/ 1.25 in. adapter
2 in. w/ 1.25 in. adapter
2 in. w/ 1.25 in. adapter
2 in.
2 in.
2 in.
2 in. w/ 1.25 in. adapter
Lens/Mirror Coating
Dielectric
EMD
Enhanced reflectivity material
Aluminum
Enhanced reflectivity material
Enhanced reflectivity material
Multiple
Multiple
Multiple
Proprietary
Multiple
Lens/Mirror Material
Low thermal expansion quartz
Hoya ED glass
Low expansion optical glass
BK-7 Optical glass
BK-7 optical glass
Aluminum, quartz-coated glass
ED glass
ED glass
ED glass
Fluorite substitute
ED glass
Flat Field Features
 
 
 
 
Coma Free Features
 
 
 
 
Portability
Weight
16.4 lbs.
7.5 lbs.
22 lbs.
15.8 lbs.
16 lbs.
12.1 lbs.
4.75 lbs.
6.2 lbs.
4.5 lbs.
6 lbs.
8.58 lbs.
Optical Tube Length
18 in.
18.5 in.
37.5 in.
21.8 in.
27.5 in.
23.6 in.
12 in.
15 in.
11.75 in.
10 in.
12.68 in.
Tube Diameter
9.02 in.
3.3 in.
9.25 in.
9.05 in.
9 in.
7.5 in.
3.25 in.
3.1 in.
3.25 in.
2.75 in.
3.7 in.
Carry Case
 
 
 
 
 
 
Included Items
Software
 
 
 
 
 
 
 
 
Dust Shield
 
 
 
 
 
Dew Shield
 
 
 
 
 
Finderscope
 
 
 
 
 
 
 
 
 
Collimation Tool
 
 
 
 
 
 
 
 
Help & Support
Technical Support
Documentation
 
 
Money Back Guarantee
 
 
 
 
 
 
 
 
Warranty