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I am a french amateur astronomer. My
telescope is a 24 inches(600mm)
Ritchey Chretien F/D 8 or F/D 12.4 with another secondary mirror or a Newton
hyperbolic F/D 3.2 with a third secondary mirror. |
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I am a french amateur astronomer. My
telescope is a 24 inches(600mm)
Ritchey Chretien F/D 8 or F/D 12.4 with another secondary mirror or a Newton
hyperbolic F/D 3.2 with a third secondary mirror. |