Telescope


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Jason H0

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#1
Today Carrfour is selling a Bluesky Telescope with magnification of 175x. Is this a good telescope as the price is $49? Can one with idea if this can be attach to the EOS digital body with some adopter?
 

blurblock

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#2
Jason H0 said:
Today Carrfour is selling a Bluesky Telescope with magnification of 175x. Is this a good telescope as the price is $49? Can one with idea if this can be attach to the EOS digital body with some adopter?
1.That one is a toy scope, should be 0.96mm eyepiece.

2. To attach a telescope to a body (We should take this Bluesky Telescope as an example), you need 1 x EOS-Tmount Adapter and a 1x 0.96-1.25mm eyepiece adapter, 1 x 1.25mm--> Tmount camera adapter (or if you are lucky, and you can find a 0.96mm --> tmount camera adapter, then you will not need a 0.96-1.25mm eyepiece adapter).

The T-Mount Adapter cost about $50
The Eyepiece adapter cost about $100
The Tmount Camera Adapter cost about $100

What is the aperture and focal length of that telescope?
 

J

Jason H0

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#3
thanks for replying so quick. what do u mean by a toy scope? Is it that the quality of the images is no up to standard? I did not have any idea what is the focal length or aperture.

blurblock said:
1.That one is a toy scope, should be 0.96mm eyepiece.

2.
What is the aperture and focal length of that telescope?
 

blurblock

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Jason H0 said:
thanks for replying so quick. what do u mean by a toy scope? Is it that the quality of the images is no up to standard? I did not have any idea what is the focal length or aperture.
If you are lucky, it might be a Archomat Telescope with the correct aperture.

Chances are you will see alot of false lights, especially purple and yellow lights on the subject you are trying to see.

What mount is it on?
 

justdoit

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Recently come across this meade ETX60 on yahoo auction.
maginification is from 14X to 200X with f/5.9
which means it magnify larger than Canon 1200mm L which can cost you a HDB flat.
if you mount the telescope on camera, it should be able to auto expose but not auto focus.

Only question is as it magnify further, does it reduce the aperture?
Since telescope lens cannot zoom. from layman terms, it means prime lens. does it produce good optical result as compared to normal camera lens?
 

jimtong

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Although I believe that "you pay peanuts you get monkey". I still think that for $49, it is a good deal. Maybe for once in a while solar eclipse, comet?
It was stated that they only 300 set per branch. wonder if can still get it after work.
 

#7
jimtong said:
Although I believe that "you pay peanuts you get monkey". I still think that for $49, it is a good deal. Maybe for once in a while solar eclipse, comet?
It was stated that they only 300 set per branch. wonder if can still get it after work.

hi, saw it at carrefour ..
dun worry, no body touch it.. no body buy it...

dun think u can hook it up to the EOS 300 ... it is too light.. the camera body would make the whole setup unbalance..

image quality is HORRIBLE....
 

blurblock

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justdoit said:
Recently come across this meade ETX60 on yahoo auction.
maginification is from 14X to 200X with f/5.9
which means it magnify larger than Canon 1200mm L which can cost you a HDB flat.
if you mount the telescope on camera, it should be able to auto expose but not auto focus.

Only question is as it magnify further, does it reduce the aperture?
Since telescope lens cannot zoom. from layman terms, it means prime lens. does it produce good optical result as compared to normal camera lens?
How are you going to magify to 200x with a 60mm Telescope? The image will be breaking......

A 60mm telescope will be looking at at max 120x magification.

The aperture is fixed. The optical result is not as good as you will get with normal camera lens as it is not APO...... and it is not designed to be used as a camera lens, but for visual use.....
 

blurblock

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jimtong said:
Although I believe that "you pay peanuts you get monkey". I still think that for $49, it is a good deal. Maybe for once in a while solar eclipse, comet?
It was stated that they only 300 set per branch. wonder if can still get it after work.
No point .... you will burn your eyes if you use that for eclipse and you will not be able to catch a comet with that.
 

jimtong

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#10
blurblock said:
No point .... you will burn your eyes if you use that for eclipse and you will not be able to catch a comet with that.
:bsmilie: you got a point... maybe good for stars grazing...
 

Wai

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#11
Michael Ang said:
hi, saw it at carrefour ..
dun worry, no body touch it.. no body buy it...

dun think u can hook it up to the EOS 300 ... it is too light.. the camera body would make the whole setup unbalance..

image quality is HORRIBLE....
saw abt 10 left when i was there at 1pm
 

Wai

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#12
blurblock said:
No point .... you will burn your eyes if you use that for eclipse and you will not be able to catch a comet with that.
yes, dun ever try the sun unless u have specialised filter and still must ensure that the filter is securely installed. dun try to use a piece of negative as filter too!

Some pic of sun u see here are taken with a Hydrogen-alpha filter that cost thousands of dollar
 

May 17, 2004
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#13
If you want to follow up on photography through a telescoope try loooking up Digiscoping on the Web. Yahoo has a Digiscoping group which has some very good infomation but mostly using $$$$$ gear.
 

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