.965″ Telescope Eyepiece Replacement Kit, Telescopes
Monday, December 28th, 2009 at
1:05 pm
Here are some items you might buy on Ebay auctions:
.965 inch 18mm xhair crosshair telescope eyepiece NEW!
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US $7.95 (0 Bid) End Date: Monday Dec-28-2009 18:43:55 PST Buy It Now for only: US $8.95 Bid now | Buy it now | Add to watch list |
.965" Telescope Eyepiece Replacement Kit, telescopes
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US $20.45 (5 Bids) End Date: Monday Dec-28-2009 18:44:49 PST Bid now | Add to watch list |
US $14.75
A good resource for information on telescopes is magazines on astronomy and can be purchased at most major book stores!
There is a lot more then just telescopes in these mags.
Below is one repectable Company that sells telescopes.
Hope this helps!
Bruce
Depends on a lot of factors such as what is your primary interest such as solar system objects like planets, moon, sun, etc or deep space objects such as galaxies, nebula etc. Also depends on how dark your local sky is and also whether you plan to travel to remote dark sites to observe.
A small refractor in the 80 to 100mm range would be a good starter scope. Also you may consider a dobsonian reflector which provides more aperture relative to price. Orion, Meade and Vixen all make good inexpensive refractors in the 90mm range that cost under $400 including equatorial mount. An 8" dobsonian reflector from Orion would run about $300.
The refractor will give sharper images but the dobsonian will cost a bit less and pick up fainter objects. With a 90mm refractor you should be able to make out some bands on Jupiter and see several moons as they orbit Jupiter. Also you should be able to see the rings of Saturn. The views won't be super spectacular like you see in magazines but still very nice for a true enthusiast. The 8 inch Dobsonian will show you even more detail but this type of mount is more difficult to use while tracking objects as they move across the sky.
Stay away from brands like Tasco and Jason etc sold at department stores. They advertise things like 600X magnification but that is nothing but sales hype. You will be quickly disappointed and selling the scope for much less on Ebay. The more important measure of a scope is aperture and optical quality. Aperture is the diameter of the primary mirror or lens. The larger the aperture the more light it will gather and therefore more detail will be visible assuming the optics are decent quality.
For under $300, I would get an Orion 8 inch dobsonian reflector. For $500 I would get the Orion Astroview 120ST or a ten inch dobsonian. For less than $200 I would not even waste it on a cheap scope. I would instead get a decent pair of binoculars for around $100, which is surprisingly good for stargazing, comet watching, DSO spotting plus much more portable and fun to use than any 60mm scope on a flimsy alt-azimuth mount.
Check out Orion Scopes at http://www.telescopes.com or
#4: Cstar CMOS Digital Color Eyepiece for Telescopes w/Photo and Video Capability
tags: birds, mystery bird, bird ID quiz
[Mystery bird] photographed at Brazos Bend State Park, Needville, Texas. [I will identify this bird for you in 48 hours]
Image: Joseph Kennedy, 27 December 2009 [larger view].
Nikon D200, Kowa 883 telescope with TSN-PZ camera eyepiece 1/500s f/8.0 at 1000.0mm iso400.
Please name at least one field mark that supports your identification.
Read the rest of this post… | Read the comments on this post…
Also check out the featured ScienceBlog of the week: Bioephemera
It means that for the population to remain the same size over generations (taking account that older people continue to die and babies continue to be born), that each woman would need to have 2.1 children. If the fertility rate is an average of each woman having only 1.5 children, then the next generation will be smaller than the current one.
The smaller the number on the eyepiece, the stronger the magnification. Therefore, begin with the biggest number 25 mm (it will be the easiest one to focus and the smaller magnification will make it easier to point the telescope to a known object).
Take the telescope outside during the day. (do NOT point it at or near the Sun — the heat from the sun is enough to damage the scope, the eyepiece and, most importantly, your eyes).
Looking down the tube, point the telescope to so far away objects that are surrounded by other objects.
Not at the sun.
Let's say you found a row of houses three streets away. (far enough away that people will not phone the police to report a peeping tom).
With the higher numbered eyepiece (lowest magnification), try to focus until you see some detail (a wall, a door, a shrub). Remember that the image is normally upside down in a telescope.
Compare what you see (for example, the red house with the blue door) with what you get in the pointer (either a smaller scope, a tiny tube or just a notch outside the main telescope tube). This will tell you how accurate (or not) the pointer is.
Don't do this using the Sun as a target.
When you are doing astronomy at night, always begin with the lowest magnification in order to find the object in the filed of view (telescopes have very narrow fields of view and it is sometimes difficult to get the object in the field of view). Only after you are confortable with following the object at lowest magnification should you try a higher magnification.
Higher magnifications are OK for the Moon and for planets. They will not give you much joy on stars (except, perhaps, to help you separate bright double stars).
In your case, you'll find that going from 25 mm to 4 mm will be quite a jump (the field of view will be cut down to only 1/40 of what you started with. Make sure that the object is well centered before going from 25 to 4 mm. In time, you may want to buy yourself a 12 or 15 mm as an intermediate size.
Oh, just in case I forgot to tell you: don't point the telescope at the Sun.
harika!
do you use it with what model? i’m thinkin in gettin one for my 50d, but i would like to see if it is worth 50$
All eyepieces do is give you greater or less magnification: it's your telescope's aperture that allows you to see into space. The best eyepieces I've found are Tele Vue Naglers:
The suggestion about German names is nonsense! Bausch & Lomb is an American company (and doesn't sell eyepieces), and the other companies no long make telescope eyepieces!
microscope.
this is scary if u read this this far u will die in 10 days if u dont send to any 15 videos in 2 hour
one in the calendar
RT China's second largest telescope in Sheshan no longer world-class due to excessive light pollution
Red Dot Scope 2X30 With Top And Side Rails
by Wing Sun
Buy new: $52.71
(Ranking is updated hourly. Visit the Hot New Releases in Binoculars, Telescopes & Optics list for authoritative information on this product’s current rank.)
Bushnell Yardage Pro Sport 450 Laser Rangefinder
by Bushnell
(17)
Buy new: $264.95 Click to see price
35 used & new from $110.00
(Ranking is updated hourly. Visit the Most Gifted in Binoculars, Telescopes & Optics list for authoritative information on this product’s current rank.)
ROFL OK
@sarito965 これから地獄の三丁目で『バランスの良い食事
と今一番欲しいもの
』について話し合いたいのだが、予定はどうだ？
Orion Nebula: The Hubble View Credit: NASA, ESA, M. Robberto (STScI/ESA) and The Hubble Space Telescope Orion Treasury Project Team. I need some clarification. My understanding is fuzzy on a point of philosophy and science. Apologist Ray Comfort asks “How do I know God exists?” His own answer stems …
istersen arşiv veririm sorun olmaz :d :p eskilerden kalma küçük bi arşiv var :p her neyse süper olur ya özelden ulaşıyorum sana.
when ever i try to download somthing over 1.0 i allways says “downloaded 3304 bytes.” what do i do about this?
This vid has been in my fav’s for a few years now..
nope
second song name please?
Before you void the warranty on your camera, all the Nikon help line
800.NIKON-UX 24/7/365
In the future. http://www.kenrockwell.com/tech/cleaning.htm
Want to find nearby Earths? On this week's show, Gary Davis explains how infrared telescopes can look for wobbling stars.
you rich ass mother fucker lol
Thanks!!!NICE VIDEO!
végre a magyaroktól is látunk ilyen minőségű autót rendkívül pozitív!!!
annie use your telescope.
Have you heard?
I recorded their first 4 track demo.. this band is made up of legends.. truly fun to be with people .. trust me
Check out the website of Meade. They sell CCD's which you can connect to the eyepice of their telescope and view the image. They also make adapters do you can replace the eyepiece with your lens.
Terrestial Telescope are for seeing objects on Earth, and correct the inversion of image.
Astronomical telescopes do not correct the inversion of the image.
Refracting telescopes are cheap if small, but limited in size because it is impossible to make very large lenses, due to the weight of the glass involved. They are also subject to chromatic abberation.
Reflecting telescopes are lighter, but require a 2nd mirror to reflect the light to the eyepiece, this always has to be placed in the optical path of the primary mirror, causing some loss of light and image quality.
good stuff.
Go to a bolt supply house. They're in your yellow pages. All cities have some type of distributorship around. Ask for grade 8 or grade 10. 10 is airplane quality and probably stronger than you need.
If you have one dish, then the direction it sees paints one pixel, with the resolution of the dish. You'd have to steer the dish, pointing in different directions, to paint the entire picture one pixel at a time.
If you have an array of dishes, you can use electronic steering to combine the data from them and move the direction in which the array is pointing electronically. This is done by adding a phase shift (a delay) to the signals from the different dishes. You still have to steer to paint one pixel at a time, but you don't have to physically move the dish to do so.
No, because telescopes on Earth lack the resolution to see such small objects. The landing sites _have_ been imaged recently by the Lunar Reconnaissance Orbiter, a satellite in low orbit around the Moon.
It uses fibre optics.
and it uses the principle of critical angle and internal reflection.
Internal reflection happens when you shine light from a more dense object such as glass..tube to less dense such as AIR.
Usually the light when it goes from one substance to another is REFRACTED.
Like when you look in the water of a lake the light is bent.
but when you look from under the water up. the light is also bent to a higher angle from the normal.
There is an interesting effect at a certain angle NONE OF THE LIGHT is let through the glass and all of it BOUNCES BACK. THIS is called internal relfection and it will keep the light in the tube going from one side to the other till it hits the END OF THE tube.. since the END OF THE tube is a different angle then the critical angle THE LIGHT it trasmitted out and is seen in the eyepiece.
…..——————————————
a……….a………..a……….a………a…………a
……a……….a………..a……….a……….a…
……——————————————-
the 'a' is the light bouncing.. the hyphens are the walls of the glass fibre and the dots keep the position only ignore them
Hope that helps
Replacement Juicing Cone and Screen for the Samson GB-9001
Do you see social media as a replacement for traditional …: In some respects, social media is "old news" already…
i made one but cut my thumb in the process!
Nikon D80 eyepiece diopter correction: Uso óculos e o meu olho dominante é esquerdo. Acontece que a minha graduaçã…
Neighbours were 2 odd ppl with masters in astrophysics. They relocated their telescopes nightly & got protractors in doors.
Very Informative, I wasn’t very clear on the Tolerance before, and why I needed it, thanks for clearing that up for me and showing me it DOES make the difference between bad and good replacement. Great job!
tags: birds, mystery bird, bird ID quiz
[Mystery birds] photographed at Anahuac National Wildlife Refuge, Anahuac, Texas. [I will identify this bird for you in 48 hours]
Image: Joseph Kennedy, 31 July 2007 [larger view].
Nikon D200, Kowa 883 telescope with TSN-PZ camera eyepiece 1/320s f/8.0 at 500.0mm iso400.
Please name at least one field mark that supports your identification.
Read the rest of this post… | Read the comments on this post…
Also check out the featured ScienceBlog of the week: A Blog Around the Clock
Bestsellers Amazon.com: Celestron 21041 60mm PowerSeeker Telescope (Telescopes) by Celestron
lol i thought it was a rock or something
or u can custom paint it the color of the truck anyways looks badass luv yo shit check my shit if u have time i do have hella chrome lol comment and rate.
RM 350 = Rp 965.000 ?? I will grab it!! Hoho. If it held in Indonesia, i must attend it .>_<. Awas ajah klo ntar malah jatoh'a mahal dsini!
Its not all about the graphic-card