Who knows stuff about telescopes...
Who knows stuff about telescopes...
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Discussion

Dai Capp

Original Poster:

1,641 posts

290 months

Wednesday 28th January 2009
quotequote all
Mrs DC and I both have an interest in star gazing and have decided that this years wedding anniversary present to ourselves will be a telescope.

Thing is there's so much selection we don't really know what's what. Bascially we want to be able to see planets and moons and if we can get one that will let us see further that would be great. Reckon we could spend around £300

Pie in the sky (if it is can we see it through a telescope) or will we get something that will let us see stuff!

Any advice would be greatfully recieved!

Cheers

DC

bigfoot7

352 posts

274 months

Wednesday 28th January 2009
quotequote all
Aperture is the priority with telescopes but then so is ease of use. No point having something you only use the once. Have you thought about binoculars? I would suggest finding your nearest amateur astronomical society and have a chat to the members. They should let you look their scopes if you ask nicely.

halo34

2,890 posts

229 months

Wednesday 28th January 2009
quotequote all
I just ordered a skywatcher 150pm but it turned up in bits so still waiting to get my new one.

Never had one before but fancied a bit of star gazing.

The first issue was that all the pretty pictures you see are captured through cameras which have the sensitivity and exposure times to show all the colours.

However having said that even a £200 (thats what I paid) telescope will show up alot - including Saturns rings by all accounts.

I went for a 6 inch newtonian jobby - basically as big as I could go within budget without any motors or bells and whistles.

If you can wait a week ill report back on the results with the naked eye - thats if Parcel Farts dont spend their time drop kicking the next one about.

Zad

13,017 posts

266 months

Thursday 29th January 2009
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Even a 70mm refractor will just show Saturn's rings. Or would if they were in a suitable attitude at the moment. The really annoying thing is waiting for the right weather.

DIW35

4,205 posts

230 months

Thursday 29th January 2009
quotequote all
As Bigfoot said, the key to seeing faint objects is aperture. The most aperture for your pound can be obtained with a Dobsonian scope or a Newton.

Downside, most Dobsons are on a manual mount, which can make it tricky finding specific objects, until you learn your way around the night sky. If you are interested in taking photographs through your scope, many Newtons have insufficient back focus to allow your camera to focus when attached to the scope.

To learn the night sky I can heartily recommend Turn Left at Orion by Guy Consolmagno and Dan M. Davis, which was written with beginners and small scopes in mind.

Dai Capp

Original Poster:

1,641 posts

290 months

Thursday 29th January 2009
quotequote all
DIW35 said:
As Bigfoot said, the key to seeing faint objects is aperture. The most aperture for your pound can be obtained with a Dobsonian scope or a Newton.

Downside, most Dobsons are on a manual mount, which can make it tricky finding specific objects, until you learn your way around the night sky. If you are interested in taking photographs through your scope, many Newtons have insufficient back focus to allow your camera to focus when attached to the scope.

To learn the night sky I can heartily recommend Turn Left at Orion by Guy Consolmagno and Dan M. Davis, which was written with beginners and small scopes in mind.
Great thanks - I can just see me now getting over excited about getting a 'scope and then seeing knack all because I don't know where to look! I guess the moon is a starter for 10 though smile

Thanks for the recommendations - some come with a book but I reckon it's best to have one that other people have found helpful rather than one that the seller got a good deal on!

Thinking that this could be the one (though photography would be good so may have to rethink)

http://www.pulsar-optical.co.uk/prod/telescopes/sk...

Along with 'Turn Left at Orion'

Cheers

DC

halo34

2,890 posts

229 months

Thursday 29th January 2009
quotequote all
Thats the one I ordered...

In my travels I found this

http://www.12dstring.me.uk/astro.htm

Which apparently are pictures taken with the same telescope (roughly)

halo34

2,890 posts

229 months

Tuesday 24th February 2009
quotequote all
Ok after much faffing and a broken telescope thanks to Parcel force it arrived.

I then waiting two weeks for the weather to clear.

Spent three nights finding out I cant point the damn thing where I want it.

One night getting hang of moving it about and getting confused about eye pieces.

One night looking at jupiter and trying to work out why I cant see a planet and not just a bright blob - and getting confused about eye pieces.

So its all going swimmingly well biggrin

bigfoot7

352 posts

274 months

Tuesday 24th February 2009
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I would seriously consider finding out your nearest astronomical society and pop along. They will help you get the best from your purchase and make sure that it's not confined to the loft to gather dust. Try looking on the FAS website for more info.

DIW35

4,205 posts

230 months

Tuesday 24th February 2009
quotequote all
halo34 said:
Ok after much faffing and a broken telescope thanks to Parcel force it arrived.

I then waiting two weeks for the weather to clear.

Spent three nights finding out I cant point the damn thing where I want it.

One night getting hang of moving it about and getting confused about eye pieces.

One night looking at jupiter and trying to work out why I cant see a planet and not just a bright blob - and getting confused about eye pieces.

So its all going swimmingly well biggrin
Welcome to the world of astronomy!! laugh

halo34

2,890 posts

229 months

Wednesday 25th February 2009
quotequote all
Thanks guys - going to do some reading up tonight and maybe get in contact with a local club, even if just to help me get a bit more comfortable with it.

Whats the maximum exposure time you can run a SLR through it without a motorized mount before it blurs out of curiosity?

DIW35

4,205 posts

230 months

Wednesday 25th February 2009
quotequote all
Time v blurring when taking photos of the stars is a function of focal length. With a normal wide angle lens you can extend the time to several seconds. By the time you get up to telephoto lenses and telescopes, you are down to a matter of a couple of seconds.

As with any telephoto lens, your telescope not only magnifies what you are looking at but also any movement, either of the scope itself or the object you are imaging.

halo34

2,890 posts

229 months

Wednesday 25th February 2009
quotequote all
DIW35 said:
Time v blurring when taking photos of the stars is a function of focal length. With a normal wide angle lens you can extend the time to several seconds. By the time you get up to telephoto lenses and telescopes, you are down to a matter of a couple of seconds.

As with any telephoto lens, your telescope not only magnifies what you are looking at but also any movement, either of the scope itself or the object you are imaging.
So in other words buy the motor thingy frown

DIW35

4,205 posts

230 months

Wednesday 25th February 2009
quotequote all
And then you'll start learning about alignment, periodical error compensation and auto guiding. It's a long slope you've started on! wink