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  1. #1
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    Post a Cheap refractor and a fair eyepiece...



    I currently use one of those department store type cheap refractors. i-science is the name. The eyepieces that came with the scope was utter crap but I got myself GSO super plössl 25mm and 15mm eyepieces from a friend (the same guy whom I built the 10"er with). It worked wonders. Two nights ago I was trying to see what the faintest star was I could see. The viewing conditions was approx. 5/10 max. So I was looking at Omega Centauri (almost 50degrees from zenith) through the 15mm eyepiece giving me 46.6x power. I saw a 9.05 magnitude star. On 7-8/10 night I'm sure I'll be able to see 10th-11th magnitude stars. So my conclusion is that those really cheap refractors can do the job if you use fair eyepieces at least with it. This scope has brought me only fun and great viewing (considering the scope quality) so far in the +-4 years using it.
    The more you look... The more you see... The more you realize...(we are not alone)
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    150mm Optisan Newtonian (EQ), 60mm i-science Refractor (ALT-AZ), 15mm & 25mm GSO EP's, 7x50 Tasco Binoculars and Stellarium.
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  3. #2
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    Quote Originally Posted by Duard View Post
    I currently use one of those department store type cheap refractors. i-science is the name. The eyepieces that came with the scope was utter crap but I got myself GSO super plössl 25mm and 15mm eyepieces from a friend (the same guy whom I built the 10"er with). It worked wonders. Two nights ago I was trying to see what the faintest star was I could see. The viewing conditions was approx. 5/10 max. So I was looking at Omega Centauri (almost 50degrees from zenith) through the 15mm eyepiece giving me 46.6x power. I saw a 9.05 magnitude star. On 7-8/10 night I'm sure I'll be able to see 10th-11th magnitude stars. So my conclusion is that those really cheap refractors can do the job if you use fair eyepieces at least with it. This scope has brought me only fun and great viewing (considering the scope quality) so far in the +-4 years using it.
    Hi
    also from south africa. Got myself a cheapo k-way and so far its been great. think were blessed with some clear skies here.
    would love to see how some other ep looks,especialy a wide angle or plossl. Mine came with 3. 20mm 12.5 and a 4.5 i think. The 20 and 12.5 gives me some clear crisp images. The barlows that came with was the biggest suprise. the 1.5x is long and really useless,but the 3x actualy works like a charm. Jupiter thru the 3x(i think its more 2x) with the 12.5 looks pretty amazing,and even the orion nebula looked crisp ad could clearly see all the stars

    Clear Skies
    Christian

  4. #3
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    Apart from the ep's that came with the scope, the worst component I would say is the focuser. But then again, once you've got focus there is no stopping the fun.

    Thanks for sharing.
    The more you look... The more you see... The more you realize...(we are not alone)
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    150mm Optisan Newtonian (EQ), 60mm i-science Refractor (ALT-AZ), 15mm & 25mm GSO EP's, 7x50 Tasco Binoculars and Stellarium.
    (254mm Homebuilt EQ Newtonian coming soon)

  5. #4
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    nice to hear this, I also have a cheapy and used it for years (but could not even see Orion nebulae with it). Not too long ago I eventually bought a 8" dob, which came with some decent EP.
    So will give my little fun scope a new chance with the new EP...

    BTW - also from South Africa and I went outside this morning at 2am. The sky was clear.
    I was specifically looked for sombrero galaxy and finally got it, but could only see a faint elliptic cloud (guess I have to be a in slightly darker spot still).

  6. #5
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    Quote Originally Posted by Duard View Post
    Apart from the ep's that came with the scope, the worst component I would say is the focuser. But then again, once you've got focus there is no stopping the fun.

    Thanks for sharing.
    You mean that super small area that you can basicly miss by turning it one nano meter to far.....

  7. #6
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    Quote Originally Posted by Zombie View Post
    You mean that super small area that you can basicly miss by turning it one nano meter to far.....
    You said it best dude.

    I usually use my 25mm ep which gives me 28x power and I enjoy it a lot. The 15mm ep gives nice extra power but it tires my eyes.

    In the past few days I have also experienced some clear skies, but 50% of the clear skies here are accompanied by a fat layer of dust or filth or whatever you want to call it. Thats when I wanna cry.
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    150mm Optisan Newtonian (EQ), 60mm i-science Refractor (ALT-AZ), 15mm & 25mm GSO EP's, 7x50 Tasco Binoculars and Stellarium.
    (254mm Homebuilt EQ Newtonian coming soon)

  8. #7
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    Quote Originally Posted by Duard View Post
    You said it best dude.

    I usually use my 25mm ep which gives me 28x power and I enjoy it a lot. The 15mm ep gives nice extra power but it tires my eyes.

    In the past few days I have also experienced some clear skies, but 50% of the clear skies here are accompanied by a fat layer of dust or filth or whatever you want to call it. Thats when I wanna cry.
    yeah its frustrating,i call it the red dust cloud of death. as im almost smack in the middle of jhb its almost imposible to view anything that isnt directly up. need to find a clear spot to go viewing thats also safe

    any advice on where to get some astronmy stuff here in sa. been looking at some skywatcher plossl eyepieces,Telescope Accessories - Sky-Watcher 7.5 Plossl Eyepiecemm for sale in Johannesburg (ID:24013245)

  9. #8
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    Quote Originally Posted by Zombie View Post
    any advice on where to get some astronmy stuff here in sa. been looking at some skywatcher plossl eyepieces,Telescope Accessories - Sky-Watcher 7.5 Plossl Eyepiecemm for sale in Johannesburg (ID:24013245)
    Try these guys. They are there in JHB.

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    150mm Optisan Newtonian (EQ), 60mm i-science Refractor (ALT-AZ), 15mm & 25mm GSO EP's, 7x50 Tasco Binoculars and Stellarium.
    (254mm Homebuilt EQ Newtonian coming soon)

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  11. #9
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    "Department store type cheap" telescopes should usually be avoided, but that doesn't mean they cannot be useful. Three weak spots with them are often a wobbly mount, poor eyepieces, and hard to focus. If you can replace the eyepiece or use the lowest magnification available it helps. If you can strengthen the mount so it doesn't wobble, and if you have the patience to fiddle with the focus, they can be quite useful.

    There are at least two reasons they should be avoided. 1) They often cost as much as better quality telescopes. 2) they can be hard to use, and might discourage a new observer from staying with astronomy. If you already have one, or can obtain one cheaply enough and if you gain enough from the views that you are not discouraged they can be very useful.

    For a long time after college I was without a telescope. I mainly used my binoculars, which were great for wide sweeping views. One day I found a cheap department store 4.5" reflector at a garage sale for $15. The mount was almost impossible to use, but I could get good views of the moon. After that I used my binoculars on dark nights and the scope when the moon was up. Later a friend gave me another department store 4.5" reflector on a better mount. That allowed me to see some of the brighter objects. I used these for a long time before I could afford an Orion 6" Dob. I am currently using a $15 telescope with a replacement eyepiece and replacement mount as my grab and go. It works fine for what I am doing right now.
    Rob
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    Current Projects: nothing organized, just preparing for retirement in a few years
    Main Scopes: Orion XT10, Dob / ES ED80T / Orion 90mm Mak-Cass / 50 mm Galileoscope refractor / Celestron 8" SCT / Orion Sirius Mount / Various cameras and lenses

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  13. #10
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    Thanks for that opinion jrkirkham. I fully agree with you. Luckily for me I don't have any problems with a wobbling mount or bad eye pieces. Just a focuser that turns tight at certain areas. But as I said in an earlier posting, once you've got focus its all good. Using lower power definately helps with focusing easier (exact reason for using my 25mm more than my 15mm).
    The more you look... The more you see... The more you realize...(we are not alone)
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    150mm Optisan Newtonian (EQ), 60mm i-science Refractor (ALT-AZ), 15mm & 25mm GSO EP's, 7x50 Tasco Binoculars and Stellarium.
    (254mm Homebuilt EQ Newtonian coming soon)

 

 

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