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recman
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PostPosted: 00:15 - 04 Dec 2012    Post subject: Telescope Reply with quote

Always fancied one but know bugger all about them.
So, is this gonna be a heap o shite, i.e. you get what you pay for etc?
Or will it do to see if the lunar landings were legit? Thinking
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Lord Percy
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PostPosted: 00:47 - 04 Dec 2012    Post subject: Reply with quote

Might be worth it for a fuckaround. 40 quid is basically the price of two cheap nights out, so balance it out by saying you're forfeiting booze in the name of intellectual pursuit.

I'm actually doing a pretty cool astronomy course at the moment, so I tried to explain stuff to do with the viewing angles of stellar objects from earth, and the various finicky features of stargazing telescopes, but a quick google/wikipedia search showed me how complex it actually is, and I know fuck all about it Laughing

Basically, yeah, that telescope might be a bit of fun for looking at the moon, but it'll lose its novelty pretty quick. Similarly, if you invest in a really big one, that'll lose its novelty quickly too unless you spend some time learning all the mathematical stuff to do with arc lengths, radiation wavelengths, and other stuff that affects the things you can actually see with it.

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Islander
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PostPosted: 01:25 - 04 Dec 2012    Post subject: Reply with quote

Sorry but that's tosh. I know several people that own large telescopes and have no interest in the maths. You don't have to know anything other than what you want to look at and where to look for it. I've got a 16" reflector as well as an 8.75" and a couple of refractors too. When I set up I just point them where I want to look and enjoy. I've done some serious stuff too but that's a personal choice. You don't need to know the theory to be continually amazed.

To the OP:

The planets are fascinating as are deep space objects. the Aldi telescope is a basic reflector with a pretty small aperture and the eyepieces supplied are as basic as they come - for an extra few quid this one would be better:

https://www.firstlightoptics.com/dobsonians/skywatcher-heritage-76-mini-dobsonian.html

A bit more will get you something like this:

https://www.firstlightoptics.com/startravel/skywatcher-startravel-80-eq1.html

And a bit more still will get you this:

https://www.firstlightoptics.com/dobsonians/skywatcher-heritage-130p-flextube.html

The last one is a pretty reasonable telescope for the price and will give you hours of amazement - UK weather permitting of course. Wink

One thing you should realise, you've probably seen pictures of nebulae and galaxies in amazing colour and detail - that's not how they appear even through a large scope. The eye can't see colour unless there's plenty of light - those are photographic images. Nebulae and galaxies are known as grey fuzzies for a reason Smile

If you want to have a bash without spending any money, then get yourself along to a local astronomy club meeting and have a chat - they'll usually have star meets and there will be usually be a few assorted scopes that you'll be able to have a look through - plus plenty of people to show you around. We're a friendly bunch us amateurs. Very Happy
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Lord Percy
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PostPosted: 02:40 - 04 Dec 2012    Post subject: Reply with quote

Fair play, I lose Laughing

I do want a very big and super amazing digital space telescope now though.
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temeluchus
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PostPosted: 03:41 - 04 Dec 2012    Post subject: Reply with quote

The optics in the aldiscope might be questionable. It also includes two of the worst types of eyepieces going-huygens and ramsden.


Spend a little more and get the Skywatcher Heritage 76mm-these have decent mirrors and supplied with acceptable Kellner eyepieces. This can be had for 50 quid or so.

https://www.firstlightoptics.com/heritage/skywatcher-heritage-76-mini-dobsonian.html



Spend some more, around 100-150 quid will get you a much better telescope.


Bigger mirror so you can see dimmer stuff:
https://www.firstlightoptics.com/heritage/skywatcher-heritage-130p-flextube.html

Decent Reflector with a more capable, but more complicated mount:
https://www.firstlightoptics.com/reflectors/skywatcher-skyhawk-1145p.html

Refractor- tougher than a reflector but more expensive for the apeture:
https://www.firstlightoptics.com/startravel/skywatcher-startravel-80-eq1.html

Biggish reflector, bargain at this price:
https://www.365astronomy.com/celestron-astromaster-130eq-reflector-telescope-p-300.html
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temeluchus
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PostPosted: 03:44 - 04 Dec 2012    Post subject: Reply with quote

There are only a few little bits of maths that are needed to get the best out of a telescope.

The very helpful Chuck Hawks has a guide here:
https://www.chuckhawks.com/telescope_formulas.htm
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temeluchus
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PostPosted: 03:50 - 04 Dec 2012    Post subject: Reply with quote

Islander wrote:
Sorry but that's tosh. I know several people that own large telescopes and have no interest in the maths. You don't have to know anything other than what you want to look at and where to look for it. I've got a 16" reflector as well as an 8.75" and a couple of refractors too. When I set up I just point them where I want to look and enjoy. I've done some serious stuff too but that's a personal choice. You don't need to know the theory to be continually amazed.


^ this.

Telescope first, have a look around, go WOW and you can always pick up on the theory as you go on should you become interested.

I have a 6" refractor and a 4" Maksutov, seems to cover most bases and small enough to lash to the motorbike.

https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-ash4/319681_10151374576664363_332021898_n.jpg

I also have a Synscan AZ mount, but that doesn't see much use. Plan on getting an EQ mount for AP at some point.
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recman
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PostPosted: 08:34 - 04 Dec 2012    Post subject: Reply with quote

Good answers fellas, very helpful.
I hadn't realised that I could get hold of something half decent for a reasonabe amount of dosh.
I'm sort of willing to give the maths side of this pass time a go if it means getting more out of it, although its not my strong point.
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cimbian
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PostPosted: 09:25 - 04 Dec 2012    Post subject: Reply with quote

Lunar landings, my arse! OP wants this for perving on Mrs. Robinson in the shower. Wink
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map
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PostPosted: 10:05 - 04 Dec 2012    Post subject: Reply with quote

Interesting thread.
I've always thought of doing this but thought the local light pollution would be an issue.

When I was young my father pointed out some of the constellations and it's something I wish I'd followed it up to pass onto my kids. I think Orion is the only one I regularly pick out now.

As a side issue the 'scopes mentioned are good for astronomy but would they also be useful for looking in on your neighbours? Wink ...thinking Rear Window or Disturbia Shocked
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pa_broon74
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PostPosted: 11:24 - 04 Dec 2012    Post subject: Reply with quote

We were always told a decent pair of binoculars were a good start.

With a pair of 7x50's (7x mag, 50mm objective lenses) you can see the orion nebula, Jupiter's Gallilean moons, Venus as a disc (if its up, I never time it right,) the pleiades (or seven sisters, an open cluster in Taurus) is good to look at and your next door neighbours breasts if you so choose to do so.

They're a lot more portable and you can always get a set with higher magnification if you wanted to look at 'other stuff'.


Been ages since I did any astronomy, I went to a club for about 20 years. Handy for pub quizes, romantic walks in the evening or for appearing more intelligent than I actually am.
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Alpha-9
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PostPosted: 11:35 - 04 Dec 2012    Post subject: Reply with quote

Bet you can get some nice peeping in if you find some high ground Thinking

Always wanted a telescope, but I think it'll be one of those things i'd buy, use about twice, then would just take up space forever, occasionally using it to perv at neighbours or down the road Laughing
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recman
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PostPosted: 12:47 - 04 Dec 2012    Post subject: Reply with quote

cimbian wrote:
Lunar landings, my arse! OP wants this for perving on Mrs. Robinson in the shower. Wink


I have a nice MTC Viper 10x44 rifle scope for that. Thumbs Up Twisted Evil
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map
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PostPosted: 13:09 - 04 Dec 2012    Post subject: Reply with quote

qb78 wrote:
cimbian wrote:
Lunar landings, my arse! OP wants this for perving on Mrs. Robinson in the shower. Wink
I have a nice MTC Viper 10x44 rifle scope for that. Thumbs Up Twisted Evil

...but can't you attach camera/video/PC to record images to these telescopes now Wink Very Happy
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Dave-the-rave
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PostPosted: 16:27 - 04 Dec 2012    Post subject: Reply with quote

My neighbors are a bunch of perverts. I know this because I watch them closely through my binoculars.
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Walloper
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PostPosted: 16:34 - 04 Dec 2012    Post subject: Reply with quote

£100+ should be entry level.
Then you can get adaptors to connect camera's to the scope and bore the fcku out of friends and family.

I'm going for a one I seen in Amazon for £153.

Celestron 00149855 C90 MAK Spotting Scope

Start with the moon then the planets before zooming in on the bedroom of burd across the road. Embarassed
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Harold_Shand
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PostPosted: 17:06 - 04 Dec 2012    Post subject: Reply with quote

I've got a pair of 10x50 binoculars. Plus points with binoculars is that you have a big field of vision, you can just pop out to the garden for a quick 10 minutes when the cloud has cleared, you don't need a tripod, you don't get much shake and they are cheap ( mine were £35 ).
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Harold_Shand's theory might be the best explanation.
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Tarmacsurfer
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PostPosted: 17:34 - 04 Dec 2012    Post subject: Reply with quote

Harold_Shand wrote:
I've got a pair of 10x50 binoculars.


After seeing the Aldi scope and getting interested then doing a bit of reading I'd decided on a set of 10x50 binocs. What kind of view of the moon do you get through them? Can you make much out?
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Harold_Shand
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PostPosted: 18:44 - 04 Dec 2012    Post subject: Reply with quote

It won't fill your view but you can easily make out the craters, especially nice is at the edge where light hits the craters and the centre of them is in the shadows. Better than I thought they'd be which is good because I couldn't be arsed faffing about with a telescope. You won't regret getting them, put it that way.
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Harold_Shand's theory might be the best explanation.
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Spudly
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PostPosted: 19:20 - 04 Dec 2012    Post subject: Reply with quote

map wrote:
Interesting thread.
I've always thought of doing this but thought the local light pollution would be an issue.

When I was young my father pointed out some of the constellations and it's something I wish I'd followed it up to pass onto my kids. I think Orion is the only one I regularly pick out now.

As a side issue the 'scopes mentioned are good for astronomy but would they also be useful for looking in on your neighbours? Wink ...thinking Rear Window or Disturbia Shocked


Light pollution can be an issue, but it is reasonably easy to get around using a filter which subtracts the specific wavelength of light emitted by the streetlights, unless you are unlucky enough to have the nightmare of the new bright white LED streetlights.

As far as seeing evidence of the moon landings goes, there isn't a single earthbound telescope, amateur or professional which will do that unfortunately. The distances are just too large. Even Hubble can't do it and it doesn't have to account for atmosphere or seeing conditions. The Lunar Reconnaissance Orbiter has managed to find the paths left by the astronauts as well as identify the shadows cast by the flags and landers left behind by the Apollo program though.

As far as that telescope linked to in the OP, avoid it at all costs! It is set up to look a bit like a small Meade Maksutov Cassegrain telescope (which is a fabulous thing) but is a cheap reflector, probably with a spherical mirror and eyepieces made of potatoes.

Any of the scopes linked to by Islander or Temeluchus will blow you away and as they said, you don't need the mathematics to be able to enjoy astronomy.

My advice would be to spend a little more and get something off this page which includes the telescope: https://www.firstlightoptics.com/az-goto.html.

The packages on that screen have something called a GOTO system attached to them, which actually let's you input your location, point the telescope at a couple of stars, then it figures out where everything is and you are away.

Once the scope is aligned, all you do is enter or select the name of an object you want to look at and the motors point the telescope at the object and track it for you as it moves across the sky. (figure of speech - it doesn't move across the sky, the earth rotates and changes your perspective of the object. You get a real sense of your own insignificance with astronomy.)

The GOTO systems are the nearest thing to magic I've seen. Fantastic use of technology and a brilliant way to start to know the sky.
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Frost
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PostPosted: 22:12 - 04 Dec 2012    Post subject: Reply with quote

I've been considering a 6-8" reflector, webcam adaptor, home made star tracking system.
It'd let me take some long exposure and hopefully very clear pictures.
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Spudly
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PostPosted: 23:08 - 04 Dec 2012    Post subject: Reply with quote

Frost wrote:
I've been considering a 6-8" reflector, and a webcam adaptor, home made star tracking system.
It'd let me take some long exposure and hopefully very clear pictures.


I think it's the SPC 900 webcam which most amateur astronomers use to do their photography.

If you have a DSLR I think it costs about £15.00 to get a T-adaptor which will allow you to mount the camera onto the telescope.

I used to have a 10 inch dobsonian by skywatcher which was fantastic. I just had to sell it though, to buy my bike, believe it or not.

At the moment I have a 4 inch skywatcher refractor which I need a new diagonal for. I really should get around to grabbing that actually.
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Islander
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PostPosted: 23:17 - 04 Dec 2012    Post subject: Reply with quote

Frost wrote:
I've been considering a 6-8" reflector, webcam adaptor, home made star tracking system.
It'd let me take some long exposure and hopefully very clear pictures.


8" is a pretty big tube - you'd need a substantial mount for that and for long exposures, a simple tracking drive won't cut it - you'll need to use autoguiding.

There's an excellent book that's recommended reading for anyone starting out in astrophotography called "Making Every Photon Count" by Steve Richards - it covers mounts, guiding, cameras and post processing.

The usual setup for astrophotography is an ED80 type scope (a type of apochromatic refractor with an 80mm objective lens), either an HEQ5 or NEQ6 equatorial mount, something like a Starwatcher ST80 as a guide scope, something like a QHY5 as a guide camera and then your main imaging device on the ED80. There's some excellent free software for controlling the mount and handling the autoguiding function too. Smile

AP ain't a cheap hobby Laughing
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Islander
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PostPosted: 23:22 - 04 Dec 2012    Post subject: Reply with quote

inksmithy wrote:
Frost wrote:
I've been considering a 6-8" reflector, and a webcam adaptor, home made star tracking system.
It'd let me take some long exposure and hopefully very clear pictures.


I think it's the SPC 900 webcam which most amateur astronomers use to do their photography.

If you have a DSLR I think it costs about £15.00 to get a T-adaptor which will allow you to mount the camera onto the telescope.

I used to have a 10 inch dobsonian by skywatcher which was fantastic. I just had to sell it though, to buy my bike, believe it or not.

At the moment I have a 4 inch skywatcher refractor which I need a new diagonal for. I really should get around to grabbing that actually.


The SPC800/900 is, unfortunately, as rare as rocking horse shit these days. It's really only good for planetary images anyway.

The T adaptor is two parts, a T ring specific to the camera to convert the bayonet thread to a standard T2 thread and then a T thread to 2" adaptor to fit in the eyepiece tube (1.25" will cause significant vignetting). If your scope uses an diagonal then you'd probably need a T2 extension tube as well in order to achieve focus without the diagonal. Thumbs Up
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Frost
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PostPosted: 23:37 - 04 Dec 2012    Post subject: Reply with quote

I've got a couple of the SPC's kicking about somewhere. They aren't the 900, they're a different model that runs has the same hardware and I've flashed them to run the 900 firmware.

I was going to make a massively down geared pan and tilt system, then configure it by aiming it at the pole star then have it track whatever it's pointed at. I was then going to post process the images and correct for any positional shift using auto generated tracking points.
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