Advice for stirring your online community and fostering engagement
When you enter into any new area of science, you almost always find
yourself with a baffling new language of technical terms to learn before you can converse with the experts. This is certainly true in astronomy both in terms of terms that refer to the cosmos and terms that describe the tools of the trade, the most prevalent being the telescope. So to get us off of first base, let’s define some of the key terms that pertain to telescopes to help you be able to talk to them more intelligently. The first area of specialization in telescopes has to do with the types of telescopes people use. The three designs of telescopes that most people use are the Refractor, the Reflector and the Schmidt Cassegrain telescope. The refractor telescope uses a convex lens to focus the light on the eyepiece. The reflector telescope has a concave lens which means it bends in. It uses mirrors to focus the image that you eventually see. The Schmidt Cassegrain telescope uses an involved system of mirrors to capture the image you want to see. A binocular telescope uses a set of telescopes mounted and synchronized so your view of the sky is 3-D. Beyond the basic types, other terms refer to parts of the telescope or to the science behind how telescopes work. Collimation is a term for how well tuned the telescope is to give you a good clear image of what you are looking at. You want your telescope to have good collimation so you are not getting a false image of the celestial body. Aperture is a fancy word for how big the lens of your telescope is. But it’s an important word because the aperture of the lens is the key to how powerful your telescope is. Magnification has nothing to do with it, its all in the aperture.
85588 comments
kardinal
ทางเราจำหน่าย kardinal stick , ks quik , ks kurve ต้องขอบอกได้เลยว่า kschill.com เป็นตัวแทนหลักอย่างเป็นทางการในไทย ที่ใหญ่ที่สุด และเป็นเจ้าเดียวกับ RELX THAILAND สินค้าทุกแบรนด์ ทุกรุ่น เราได้ทำการคัดสรร บุหรี่ไฟฟ้า
Comment Linkที่เป็นหนึ่งในนวัตกรรม ช่วยเลิกบุหรี่ ที่มีประสิทธิดีเยี่ยม และช่วยได้จริง มาให้ลูกค้าได้เลือกใช้ โดยสินค้าทุกชิ้นของเรา สั่งตรงจากโรงงาน
Denidobe
buy kamagra uk paypal
Comment LinkAlanidobe
levitra tablets 20mg generic prozac tablets augmentin 457 price azithromycin 1mg tretinoin buy online india bactrim 800 160
Comment LinkUgoidobe
amitriptyline 75 mg coupon
Comment LinkZakidobe
augmentin 325
Comment LinkKimidobe
cephalexin 500mg prices
Comment LinkJosephopert
where to buy tretinoin cream otc lasix canada no prescription ceftin 500mg cost
Comment LinkDavishib
amoxicillin 2g
Comment LinkDavidKef
seroquel xr 100mg
Comment LinkEyeidobe
can you buy ampicillin buy acyclovir uk seroquel 50 mg provigil south africa how to get colchicine colchicine prescription uk bupropion without prescription
Comment Link