Archive for August, 2009

Interactive night sky

Astronomy General | Posted by Carol
Aug 24 2009

I came across this interactive night sky tutorial and it’s ACE!

It teaches you how to find Orion, Betelgeuse, Polaris, Jupiter, The Big Dipper and Cassiopeia.  I did the first part of it (Orion) then rushed outside and couldn’t find it :(   So I went back inside, finished off the tutorial and felt MUCH more confident that I’d be able to find Orion …. but the sky has clouded over!!

I’ll re-do the tutorial every day until I know it all inside out and hopefully I’ll get another clear sky soon so I can try out my new skills!



Clear skies!

Astronomy General | Posted by Carol
Aug 24 2009

For the first time in days, there are clear skies outside!  It’s just before 8pm as I type this, so if the skies stay as they are for the next couple of hours, I’m hopeful that I might FINALLY get to do some sky watching this evening – hurray!



Solar filters

Telescopes | Posted by Carol
Aug 22 2009

I was thinking last night that it would be good to be able to view the sun through the telescope. It’ll give me more “telescope time” while it’s staying light so far into the evening.

So, I started researching solar filters and found a major price difference:

I think the difference is in the material – the cheaper one is glass and can shatter / break when dropped.  The more expensive filter is made of Baader Astro Solar™ Safety Film, which is apparently far superior to glass, Mylar or polymer materials.  It gives brighter, sharper and higher contrast pictures.



Moon phases

Astronomy General, Moonrise & Moonset | Posted by Carol
Aug 21 2009

I’m EXTREMELY keen to get started with star-gazing – or, rather, moon gazing to start off with. Best to begin with a big bright target methinks!

I noticed last night that I couldn’t see the moon at all but I put it down to cloud cover. Now I’ve since done a bit of research about moon phases and this is what I’ve learned:

  • The shape of a moon varies from a “full moon” (which is when the earth is between the sun and the moon) to a “new moon” (which is when the moon is between the sun and the earth).
  • The moon is set to be “waxing” as it progresses from a new moon to a full moon. It is said to be “waning” as it progresses from full moon back to new moon.
  • The moon rises and sets just like the sun does! A new moon rises and sets at the same time as the sun. As the moon “waxes” (e.g. to become a crescent or half moon), it gradually rises and sets a little later each day. By the time it is a full moon, it rises pretty much when the sun sets and the moon sets around the time the sun rises. As the moon wanes, the moonrise and moonset times continue to get later until it ends up rising at the same time as the sun again – and that’s it back to being a new moon again!

So, having looked up the moonrise and moonset times for Glasgow (reasonably close to me), they are as follows:

Today – rising at 7.30am, setting at 8.32pm
Tomorrow – rising at 9.50am, setting at 8.42pm
23rd August – rising at 10.36am, setting at 8.52pm
24th August – rising at 12.04pm, setting at 9.05pm
25th August – rising at 1.30pm, setting at 9.21pm
26th August – rising at 2.52pm, setting at 9.44pm
27th August – rising at 4.06pm, setting at 10.16pm

So it’ll probably be quite a few days before the moon is visible during darkness.

Astrophotography

Astrophotography | Posted by Carol
Aug 21 2009

I’m particularly interested in taking photographs of what I see through the telescope so I’ve been doing some research into the options available.

  • Specialist CCD astrophotography cameras: these start from around £300 upwards and look to be the best way to clearly photograph the night sky. Unfortunately it’s WAY out of my budget!
  • Although, I’ve seen the Celestron NexImage Solar System CCD Imager, which is £134 and looks like it would be perfect.
  • I’ve tried doing what I think is called Afocal Coupling (where I just point the camera right up at the lens and shoot). I’ve only tried this in daylight (thanks to the lack of clear skies at night) but the picture was quite fuzzy and affected badly by vignette. (Vignette is when an image is missing its sides – e.g. a square image shown with round edges). I still need to try this at night.
  • Adapting a webcam – I’ve seen a couple of tutorials on different ways to “adapt” a webcam for astrophotography. One pretty much just involves screwing it into an adapter whereas the other one is a more complex taking-the-webcam-to-bits procedure. I think I do have an old webcam sitting around somewhere so I might look into this one! Minor detail is that I have to use the telescope outside due to the view being obstructed by neighbouring buildings, so I’m not sure how I’m going to power up the webcam without a laptop. This is also a problem for the NexImage CCD Imager.

So it seems that I either need a specialist camera, or a mount of some kind to use my existing camera.

Last night’s star gazing

Astronomy General | Posted by Carol
Aug 21 2009

Well, we were all set up and ready to go last night but the Scottish Weather wasn’t on our side. There was a fair amount of cloud cover and no moon in sight unfortunately. Will try again soon!

1 hour later…

Telescopes | Posted by Carol
Aug 20 2009

I think I have it set up. Well, mostly set up – I haven’t done the balancing part and, to be honest, I’m not 100% sure I’ve done it all right. But I don’t have any leftover parts, so I guess I must be close!


I’ll ask my trusty other half to look over it this evening then hopefully we can get started tonight. Now going to have a look through a CD-ROM I got with the telescope which will hopefully give us some tips to get started with.

Unpacked

Telescopes | Posted by Carol
Aug 20 2009

OK, after a few encounters with some dead beasties and spiders (it’s been stored in our garage for years, remember!), I’ve managed to get it all unpacked.

Doesn’t look so bad actually (famous last words?):


Let the assembling begin!

Let’s get started!

Telescopes | Posted by Carol
Aug 20 2009

It’s 1pm, the kids are upstairs for their naps and hubbie is about to go to work. This afternoon, I’m going to try and turn this:


Into a fully setup telescope, ready for some star gazing! According to the weather forecast, we’re due to have some clear skies later this evening so I want to get the telescope up and ready.

I’ve got the instruction manual and, to be honest, just looking at it is giving me a bit of a headache. But I’ll give it a try…

Website Privacy Policy / Ads

Website Privacy Policy | Posted by Carol
Aug 19 2009

Now that I’ve put Google Ads on the website, I need to tell you this…

“We use third-party advertising companies to serve ads when you visit our website. These companies may use information (not including your name, address, email address, or telephone number) about your visits to this and other websites in order to provide advertisements about goods and services of interest to you. If you would like more information about this practice and to know your choices about not having this information used by these companies, click here.”