I am a newbie to astro

Got a question on astronomy that you'd wanted to ask? Ask your questions here and see if the old timers can give you some good answers.
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Grievous
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Location: Singapore
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Post by Grievous »

I'll recommend the Peterson Field Guild Series : Stars And Planets.
It basically starts everything on a newbie entry level. No tedious words to struggle with, easy to understand with sky charts, or else get the Idiot's Guide to Astronomy or Dummy's Guide to Astronomy, dun get intimidated by the titles, they are basically...well... Idiot/Dummy-proof.

If you like mid-blogging literature, try The Five Ages of the Universe.
It Blew me away.

Charlie
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IceAngel
Posts: 330
Joined: Thu Oct 02, 2003 1:05 pm
Favourite scope: Sky 90
Location: Tampines

Post by IceAngel »

Grievous wrote:I'll recommend the Peterson Field Guild Series : Stars And Planets.
It basically starts everything on a newbie entry level. No tedious words to struggle with, easy to understand with sky charts, or else get the Idiot's Guide to Astronomy or Dummy's Guide to Astronomy, dun get intimidated by the titles, they are basically...well... Idiot/Dummy-proof.

If you like mid-blogging literature, try The Five Ages of the Universe.
It Blew me away.

Charlie
oh.. Thanks~ n0tEd! 8) :)
*~Stars AND Clear Sky always~*
Leslie
*Owner of Antares 93mm Achromat Refractor* :)
-10.11.03-
*Owner of Takahashi SKY 90 Fluorite Doublet Apochromat Refractor* :D
-25.03.06-
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IceAngel
Posts: 330
Joined: Thu Oct 02, 2003 1:05 pm
Favourite scope: Sky 90
Location: Tampines

Post by IceAngel »

itz me again..

Harlequin.. i got confused about eyepieces in ur website.. there are 1.25" and 2" EPs.. inside them, there are standard, high contrast, wide angle, zoom, guiding and etc etc... wat's the difference between them?? usually how many and which types of EPs are needed for a basic usage like seeing moon, mars, venus all those?? :? :? :?
*~Stars AND Clear Sky always~*
Leslie
*Owner of Antares 93mm Achromat Refractor* :)
-10.11.03-
*Owner of Takahashi SKY 90 Fluorite Doublet Apochromat Refractor* :D
-25.03.06-
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harlequin2902
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Location: Singapore, Sengkang

Post by harlequin2902 »

Wow wow wow. For a good answer to your question, I will have to take up maybe 1.5 pages of space just for that one single post to explain the advantages/disadvantages/differences of each and every one of them !

I'll explain to you slowly with references to *live samples* when you come over ok ? Anybody wants to come over for a free crash course too ? :) It'll be fun.
Samuel Ng
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IceAngel
Posts: 330
Joined: Thu Oct 02, 2003 1:05 pm
Favourite scope: Sky 90
Location: Tampines

Post by IceAngel »

for diagonals.. is a 45 deg more comfortable than 90 deg or the other way round?? how does a 45 deg diagonal look?? there is 0.965"-1.25" diagonal, wat's the difference?? sorry for asking so much :oops: :oops: :(
*~Stars AND Clear Sky always~*
Leslie
*Owner of Antares 93mm Achromat Refractor* :)
-10.11.03-
*Owner of Takahashi SKY 90 Fluorite Doublet Apochromat Refractor* :D
-25.03.06-
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IceAngel
Posts: 330
Joined: Thu Oct 02, 2003 1:05 pm
Favourite scope: Sky 90
Location: Tampines

Post by IceAngel »

harlequin2902 wrote:Wow wow wow. For a good answer to your question, I will have to take up maybe 1.5 pages of space just for that one single post to explain the advantages/disadvantages/differences of each and every one of them !

I'll explain to you slowly with references to *live samples* when you come over ok ? Anybody wants to come over for a free crash course too ? :) It'll be fun.
hmmm.. alright.. sorry to ask u here.. :(
*~Stars AND Clear Sky always~*
Leslie
*Owner of Antares 93mm Achromat Refractor* :)
-10.11.03-
*Owner of Takahashi SKY 90 Fluorite Doublet Apochromat Refractor* :D
-25.03.06-
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harlequin2902
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Location: Singapore, Sengkang

Post by harlequin2902 »

No worries Leslie.

Ok, for the diagonal one, I can settle the answer here :)

The diagonals each have their own purpose.

45 deg is more comfortable for daytime viewing e.g for birdwatching
because your scope will almost always be parallel to the ground and the 45 deg viewing angle will be just nice for most people of average height without causing too much neck strain. For astronomy, 45 deg diagonals are a no-no because your scope will be at higher inclinations most of the time, and if you use a 45 deg diagonal , you will have to position your body and neck at a really weird angle to be able to view through the eyepiece. So for astronomy, it's always the 90 deg for greater comfort.

The 0.965"-1.25" diagonals are not commonly used nowadays, and they are meant more for scopeowners whose scope can strictly only accept the older 0.965" eyepieces and accessories. The current industry standard is 1.25", and 0.965" eyepieces are becoming quite difficult to come by.
So for those scopeowners, the 0.965"-1.25" diagonal has a 0.965" barrel which goes into the rear of the scope, while the top opening of the diagonal where the eyepiece goes in is 1.25" to allow him/her to use the current 1.25" eyepieces and accessories.

Hope this helps.
Samuel Ng
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IceAngel
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Joined: Thu Oct 02, 2003 1:05 pm
Favourite scope: Sky 90
Location: Tampines

Post by IceAngel »

ooh.. icic.. so last time the EPs were 0.965"?? now commonly use is 1.25"?? so 45 deg is usually used for bird watching whereas 90 deg is usually used for astro?? hmm... alright..

then u got sell field chair?? hehehe :P
or need to go Ikea and buy?? :lol:

for the skyaltas, how come so expensive?? $185??
*~Stars AND Clear Sky always~*
Leslie
*Owner of Antares 93mm Achromat Refractor* :)
-10.11.03-
*Owner of Takahashi SKY 90 Fluorite Doublet Apochromat Refractor* :D
-25.03.06-
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Kamikazer
Posts: 131
Joined: Wed Oct 08, 2003 3:35 pm
Location: Hinamizawa

Post by Kamikazer »

hi people....
i know only a little on astronomy, so i'm definitely a newbie....
can someone enlighten me on the following:
1. any good reflectors with a high f-ratio (portability is important)
2. how do we align our telescopes when we are at the equator?

thanks
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harlequin2902
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Location: Singapore, Sengkang

Post by harlequin2902 »

ooh.. icic.. so last time the EPs were 0.965"?? now commonly use is 1.25"?? so 45 deg is usually used for bird watching whereas 90 deg is usually used for astro?? hmm... alright..

then u got sell field chair?? hehehe
or need to go Ikea and buy??
Yup, I think you now get the general idea for the diagonals.

Field chairs can be bought anywhere actually. Singastro members have field chairs of all shapes, sizes and colours. you should come to one of our observing sessions and see :lol: Those "designed" for astronomy and sold by US dealers all come with really crazy price tags
( > US$100 )
Samuel Ng
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