Astronomy/lens

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Question
I bought a telescope at an auction, it's a Jason 480 and when I got it home the small lens was missing, I'm wondering where I can get another lens and if it's worth the bother or should I just junk the whole thing?

Answer
Hi Dee,
There are thousands of telescopes on the free market; I am not
familar with this series, but as a starter, we do not recommend
the products from Tasco (we affectionly call them 'trash-co's'),
Jason, or Bushnell to our new club members. (But binoculars by
the Bushnell series are generally nice).
We currently recommend a 6 - 10 inch Newtonian Reflector starter scopes from Discovery, Orion, or Antares as better starter scopes, in the range of $400-$500 as a minimum entry level to our great hobby.

But for your specific problem, I simply Googled 'Telescope Jason 480',  and came up with the following site, in which the last review answers your question; evidently there is an insert that can be
removed so you can start using the better, more efficient, standard
American 1.25 inch eyepieces, as those old Japanese 0.965 inch diameter eyepieces are even plastic, and give a horrible image, small field of view, and totally unacceptable for astronomy.
(So, no great loss that the eyepiece lens is 'missing'!)
So see
http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/2228788/Main/22...

Dee, even more important are some beginning general rules for our great hobby of observational astronomy, the first of which is...equipment (scopes) come LAST, knowledge comes FIRST.
For, if you can't point your finger to the Andromeda Galaxy, Pleiades, Beehive star cluster, the pretty double star Albireo, the Lagoon Nebula....ALL naked eye objects in a relatively dark sky, how are you going to point a very small field of view scope toward them? Eh?  The moon and Jupiter, if that's all you know, will get "old"
mighty fast.
So to enter our hobby the correct way, at your leisure punch up our
club website and read first "Tom Whiting's Sound Advice to the Novice
Observer" and this will save you a lot of future mis-steps going into
our great hobby...and will also give you some fine tips on the proper entry level steps of the hobby. Our club website is at
http://www.velocity.net/~bwhiting
Clear Skies,
Tom Whiting
Erie, PA  USA

FOLLOW UP:
Very few places still even sell the 0.965 inch diameter eyepiece,
but you might try the supplier of eyepieces that most of our club
members use, at Orion Telescopes; their website is at
http://www.OrionTelescopes.com
At least I know they carry eyepiece adapters for 1.25 inch from 0.965 inch, so you can upgrade to the much better 1.25 inch
eyepieces, rather than the low quality 0.965 inch ones.
Plus, if you ever upgrade your scope (sell the old one and buy
a new, bigger one) you don't sell your good eyepieces with the scope. They ALL use 1.25" or 2.0 inch eyepiece diameters now.
Clear Skies,
Tom  

Astronomy

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Tom Whiting

Expertise

Astronomy has been my hobby/pasttime for over 50 years.  Currently own 3 telescopes, the largest of which is a 30 inch Newtonian truss Dob that is portable.I taught Astronomy/Meteorology at the University Level for 13 years before retiring in 1995. Being retired and home most of the time, I am able to answer all questions relatively quickly, unless it's a new moon weekend with good observing conditions.  No astrology questions please, or questions about alleged UFO picture identifications.

Experience

Experience: Astronomy has been my hobby and study for over 50 years. We currently now own a 30 inch portable telescope (Updated - Pennsylvania`s largest portable telescope). It can be seen on our website at:http://www.velocity.net/~bwhiting and also attend several regional starparties during the year, and have been on 5 total solar eclipse expeditions.

Organizations: President, Erie County Mobile Observers Group for over 15 years.

Publications: Wrote the "Over Erie Skies" newspaper article in our local newspaper for 11 years (1975-86).

Education: Masters Degree- Taught at the University level for 13 years. Retired 20 years -USAF Pilot - KC-135 with 180 combat missions;  Also Eagle Scout, Philmont staff 2 Yrs, Order of Arrow Lodge Chief, Ham Radio (inactive).

Awards: two discoveries: The mini-coathanger asterism in Ursa Minor (the little dipper) And the mini-ladle- another asterism in the bowl of Ursa Minor. Clients: Currently President of the ECMOG as mentioned above.

Education/Credentials
BS  Metallurgical Engineering Grove City College, PAMaster's Degree, Gannon University, Erie, PA Also retired USAF pilot, 20 years.

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