May 2024 Astronomy Events
Unlock the secrets of the night sky in May 2024 with our detailed guide. From meteor showers to planetary alignments, learn the best times and locations to witness these celestial...
New release: Odyssey Pro Red Edition
Pre-order: Vaonis Vespera Pro
Buy one, get one 25% off - Alpen Optics
$900 OFF - through May 5th
Explore Scientific's popular 4" air-spaced triplet refractors
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Price |
$1,199.99
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$1,999.99
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$2,499.99
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Optics | |||
Optics | 1.14 arcsec resolution 12.5 limiting magnitude HOYA FCD1 extra-low dispersion (ED) glass EMD enhanced multi-layer coatings | 1.14 arcsec resolution 12.5 limiting magnitude HOYA FCD100 extra-low dispersion (ED) glass EMD enhanced multi-layer coatings | 1.14 arcsec resolution 12.5 limiting magnitude HOYA FCD100 extra-low dispersion (ED) glass EMD enhanced multi-layer coatings |
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Weight | 12 lb | 5.4 kg
| 10.9 lb | 4.94 kg
| 9.5 lb | 4.3 kg
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The cosmos in amplified vision
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$1,899.00
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$2,499.00
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$3,999.00
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$2,499.00
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$3,999.00
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Aperture | |||||
Aperture | 114 mm | 4.5"
| 114 mm | 4.5"
| 114 mm | 4.5"
| 85 mm | 3.3"
| 85 mm | 3.3"
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Focal Length | |||||
Focal Length | 450 mm
| 450 mm
| 450 mm
| 320 mm
| 320 mm
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Field of View | |||||
Field of View | 27 x 37 arcmin | 34.2 x 45.6 arcmin | 34.2 x 45.6 arcmin | 33.6 x 45 arcmin | 33.6 x 45 arcmin |
Optics | |||||
Optics | 4.9 Mpx image resolution 18.2 limiting magnitude 1.33 arseconds resolving power | 6.2 Mpx image resolution 18.2 limiting magnitude 2.9µm pixel size 1.23 arseconds resolving power 1.33 arseconds sampling | 7.7 Mpx image resolution 18.2 limiting magnitude 2.9µm pixel size 1.23 arseconds resolving power 1.33 arseconds sampling Nikon Eyepiece | 3.4 Mpx image resolution 17.2 limiting magnitude 1.45µm pixel size 1.68 arseconds resolving power 0.93 arseconds sampling | 4.1 Mpx image resolution 17.2 limiting magnitude 1.45µm pixel size 1.68 arseconds resolving power 0.93 arseconds sampling Nikon Eyepiece |
Weight | |||||
Weight | 19.8 lb | 9 kg
| 19.8 lb | 9 kg
| 19.8 lb | 9 kg
| 14.3 lb | 6.5 kg
| 14.3 lb | 6.5 kg
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