What was your first telecope?

View previous topic View next topic Go down

What was your first telecope?

Post  sindhu88 on Thu Jul 15, 2010 6:41 am

Toyed around with buying one for years as an adult, finally did so not too long ago. My first adult, researched purchase was an XT8, an 8 inch dobsonial reflector. I also picked up an extremely cheap (yay amazon clearance sale!) small refractor to go along with it.

================================]

New Homes | Cheap Flights

sindhu88

Posts : 9
Join date : 2010-07-14

View user profile

Back to top Go down

What was your first telecope?

Post  kittu on Wed Sep 01, 2010 3:55 am

What you are seeing is probably the focal length of the telescope. That is the overall length that the scope uses to deliver the light from its first contact with an optical surface to its fixed focus point inside the scope. This is a fixed number for each scope, and it is based on the way that the scope is built. It is an important number, since it is used to calculate things like magnification and resolution. It has no bearing on the distance that the scope can actually be used to see. Virtually any scope (and even your eyes alone) can be used to see millions of light years into space. That is not defined in millimeters. A focal length of 1000 mm is not unusual. It sounds like a decent sized reflector.

===================================
Life Insurance Calculator | Life Insurance Comparison



kittu

Posts : 5
Join date : 2010-08-24

View user profile

Back to top Go down

Re: What was your first telecope?

Post  stela on Fri Dec 03, 2010 5:27 am

The earliest evidence of working telescopes were the refracting telescopes that appeared in the Netherlands in 1608. Their development is credited to three individuals: Hans Lippershey and Zacharias Janssen, who were spectacle makers in Middelburg, and Jacob Metius of Alkmaar. Galileo greatly improved upon these designs the following year.
================
Slimming Pills
Slimming Pill

stela

Posts : 3
Join date : 2010-12-03

View user profile

Back to top Go down

Re: What was your first telecope?

Post  Sponsored content


Sponsored content


Back to top Go down

View previous topic View next topic Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum