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Reflectors |
Specifications |
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| Model Name & Number | Celestron Powerseeker 21045 - 24mm |
Celestron Powerseeker 21049 - 127mm |
Celestron Astromaster 31035 - 76mm |
Celestron Astromaster 31043 - 114mm AZ |
Celestron Astromaster 31042 - 114mm EQ |
| Optical Design : |
Newtonian Reflector |
Newtonian Reflector |
Newtonian Reflector |
Newtonian Reflector |
Newtonian Reflector |
| Aperture : | 114 mm (4.49 in) | 127 mm (5in) | 76 mm (2.99in) | 114 mm (5in) | 114 mm (5in) |
| Focal Length : | 900mm | 1000mm | 700mm | 1000mm | 1000mm |
| Focal Ratio : | 7.89 | 7.87 | 9.21 | 8.77 | 8.77 |
| Eyepiece 1 : | 20 mm (0.79 in) | 20 mm (0.79 in) | 20 mm (0.79 in) | 20 mm (0.79 in) | 20 mm (0.79 in) |
| Magnification 1 : | 45 x | 50 x | 35 x | 50 x | 50 x |
| Eyepiece 2 : | 4 mm (0.16 in) | 4 mm (0.16 in) | 10 mm (0.39 in) | 10 mm (0.39 in) | 10 mm (0.39 in) |
| Magnification 2 : | 225 x | 250 x | 70x | 100 x | 100 x |
| Barlow Lens : | 3 x | 3 x | |||
| Finderscope : | 5x24 | 5x24 | Built on Starpointer | Built on Starpointer | Built on Starpointer |
| Mount: | German Equatorial | German Equatorial | CG2 EQ | Altazimuth | CG2 EQ |
| Tripod : | Aluminum | Aluminum | 1.25" Steel Tube | 1.25" Steel Tube | 1.25" Steel Tube |
| Accessory Tray : | No-Tool Tray holder | No-Tool Tray holder | No-Tool Tray holder | No-Tool Tray holder | No-Tool Tray holder |
| CD ROM : | The Sky®" Level 1 | The Sky®" Level 1 | The Sky®" Level 1 | The Sky®" Level 1 | The Sky®" Level 1 |
| Weight : | 19 lb (8.62 kg) | 17 lb (7.71 kg) | 18 lb (8.16 kg) | 17 lb (7.71 kg) | 17 lb (7.71 kg) |
| Limiting Stellar Magnitude : | 12.8 | 13 | 11.9 | 12.8 | 12.8 |
| Resolution (Rayleigh): | 1.22 arcsec | 1.1 arcsec | 1.83 arcsec | 1.22 arcsec | 1.22 arcsec |
| Resolution (Dawes) : | 1.02 arcsec | 0.91 arcsec | 1.53 arcsec | 1.02 arcsec | 1.02 arcsec |
| Photographic Resolution : |
253 line/mm | 254 line/mm | |||
| Light Gathering Power : | 265 x | 118 x | 329 x | 265 x | 265 x |
| Angular Field of View : | 0.9 ° | 0.9 ° | 1.4 ° | 1 ° | 1 ° |
| Linear FOV (@1000yds) : | 48 ft (14.63 m) | 43 ft (13.11 m) | 75 ft 22.86 m) | 53 ft (16.15 m) | 53 ft (16.15 m) |
| Optical Coatings : | Aluminum | Aluminum | |||
| S/ Mirror Obstruction : | 1 in (25.4 mm) | 1 in (25.4 mm) | |||
| S/ Mirror Obstruction by Area: | 5 % | 10.2 % | |||
| S/ Mirror Obstruction by Dia: | 22.3 % | 32 % | |||
| Optical Tube Length : | 34 in (863.6 mm) | 20 in (508 mm) | 36 in (914.4 mm) | 20 in (508 mm) | 20 in (508 mm) |
Price |
$249.00 | $289.00 |
$329.00 | $389.00 | $295.00 |
| Specifications |  |
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| Model Name & Number | Celestron Astromaster 31045 - 130mm EQ |
Celestron Astromaster 31051 - 130mm EQ |
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| Optical Design : | Reflector | Reflector | |||
| Aperture : | 130 mm (5.12 in) | 130 mm (5.12 in) | |||
| Focal Length : | 650 mm (25.59 in) | 650 mm (25.59 in) | |||
| Focal Ratio : | 5 |
5 |
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| Eyepiece 1 : | 20 mm (0.79 in) | 20 mm (0.79 in) | |||
| Magnification 1 : | 33 x | 33 x | |||
| Eyepiece 2 : | 10 mm (0.39 in) | 10 mm (0.39 in) | |||
| Magnification 2 : | 65 x | 65 x | |||
| Finderscope : | Built-on StarPointer | Built-on StarPointer | |||
| Tube Attachment: | Dovetail Bar | Dovetail Bar | |||
| Mount: | CG-3 Equatorial | CG-3 EQl w/Motor Drive | |||
| Tripod : | 1.25" steel tube legs | 1.25" steel tube legs | |||
| CD ROM : | The Sky L1 | The Sky L1 | |||
| Weight : | 28 lb (12.7 kg) | 28 lb (12.7 kg) | |||
| Limiting Stellar Magnitude : | 13.1 | 13.1 | |||
| Resolution (Rayleigh) | 1.07 arcsec | 1.07 arcsec | |||
| Resolution (Dawes): | 0.89 arcsec | 0.89 arcsec | |||
| Light Gathering Power: | 345 x | 345 x | |||
| Highest Useful Mag: | 307 x | 307 x | |||
| Angular Field of View : | 1.5 ° | 1.5 ° | |||
| Linear FOV (@1000 yds) : | 79 ft (24.08 m) | 79 ft (24.08 m) | |||
| Optical Coatings : | Aluminum | Aluminum | |||
| Optical Tube Length : | 24 in (609.6 mm) | 24 in (609.6 mm) | |||
| Price | $349.00 | $410.00 |