Search found 28 matches

by robinflegg
Thu Feb 12, 2009 11:53 am
Forum: General chat
Topic: Where can I buy Mercury?
Replies: 18
Views: 4624

Where can I buy Mercury?

I'd like to buy a small quantity of Mercury that I can use as a demonstration in a classroom. The Mercury needs to be contained in a glass / plastic vessel of some description (for health and safety reasons); as I only wish to show that Mercury is a liquid at room temperature. I’ve tried searching t...
by robinflegg
Sat Jan 17, 2009 1:28 pm
Forum: General chat
Topic: Teaching Astronomy to 8 year olds - advice sought
Replies: 9
Views: 2520

I've found a calculator for the solar system:

http://thinkzone.wlonk.com/Space/SolarSystemModel.htm

I've been googling for useful resources but found nothing of good use so far; so any help would be appreciated.
by robinflegg
Sat Jan 17, 2009 12:58 pm
Forum: General chat
Topic: Teaching Astronomy to 8 year olds - advice sought
Replies: 9
Views: 2520

Teaching Astronomy to 8 year olds - advice sought

I have been asked by a school to teach Astronomy to a class of 8 year olds. Previously I have taught to an older age group and I am concerned about the level I should pitch matters at. The lesson should last for about 45minutes; and I will be teaching several groups of 8 year olds over several days....
by robinflegg
Mon Sep 17, 2007 8:45 am
Forum: Visual Satellite Observing
Topic: Prospero Mhz Signal?
Replies: 10
Views: 8652

Prospero Mhz Signal?

Did anyone watch the episode of Coast on the BBC where they used a scanner to hear the timer signal from the British Satellite Prospero? I write down the Mhz, but now I have lost it. It think it was somewhere between 163 and 138, but I cannot recall for sure. Does anyone know what the exact frequenc...
by robinflegg
Wed May 02, 2007 5:30 pm
Forum: Computers and astronomy
Topic: Two Line Elements - Basic Program
Replies: 1
Views: 3086

Two Line Elements - Basic Program

Does any have, or is anyone aware of, a BASIC program listed that can accept Two Line Elements (TLE's) and produced an output similar to Heaven's Above?

I'd be grateful if anyone could point me in the right direction.
by robinflegg
Wed May 02, 2007 8:25 am
Forum: General chat
Topic: Horizon - Large Hadron Collider
Replies: 18
Views: 6066

After 30 minutes I passed out with boredom. In fact the first 30 minutes could have been succinctly and far better expressed by The Sky At Night in 20 seconds, and without all the overblown graphics and annoying background music, which largely made it impossible to hear anyway. Having said that, I f...
by robinflegg
Mon Apr 16, 2007 9:38 am
Forum: Visual Satellite Observing
Topic: ISS voice transmissions
Replies: 1146
Views: 267217

Does anyone know a good book or website discussing all of the above?

In particular, about what to buy and how to undertake such activities.
by robinflegg
Thu Apr 12, 2007 10:42 am
Forum: Visual Satellite Observing
Topic: ISS voice transmissions
Replies: 1146
Views: 267217

Can you tell us what equipment you used to hear voice transmissions on the ISS?

I'd be most interested to try myself.
by robinflegg
Thu Apr 12, 2007 10:40 am
Forum: Telescopes and instruments
Topic: Camera lens for the Moon
Replies: 6
Views: 2267

Camera lens for the Moon

Hi,

I have an SLR camera with a 28-90mm lens. What lens would I need to take a picture of the moon, so that it is reasonably full frame?

I think the answer maybe about 300mm, but I am not sure.
by robinflegg
Mon Feb 12, 2007 1:40 pm
Forum: General chat
Topic: Sky at Night Magazine - Issue 19 - Polite Request
Replies: 3
Views: 1929

Sky at Night Magazine - Issue 19 - Polite Request

Hi, I wonder if someone can help me. Does anyone have a copy of The Sky At Night Magazine - December 2006 - Issue 19? Unfortunately, mine seems to have been discarded by mistake. I don't usually keep copies, but I had intended to cut out and keep the "how to" article on receiving images fr...
by robinflegg
Fri Jun 09, 2006 10:39 am
Forum: General chat
Topic: WarehouseExpress.Com
Replies: 4
Views: 3052

WarehouseExpress.Com

I just wanted to alert everyone to a serious problem I had with WarehouseExpress.com - as routinely advertised in Astronomy Now etc. I ordered two Canon EOS 300X Single Lens Kit cameras. I paid an extra £7.95 for next day delivery and recieved it promptly. The total cost was £427.95. When I opened...
by robinflegg
Mon Mar 27, 2006 9:33 am
Forum: General chat
Topic: Latest Sky at Night Magazine
Replies: 23
Views: 8768

Sky at Night Magazine

Typically, I arrived home that evening to see it had arrived! :)
by robinflegg
Fri Mar 24, 2006 9:27 am
Forum: General chat
Topic: Latest Sky at Night Magazine
Replies: 23
Views: 8768

Latest Sky at Night Magazine

Is it me or does it seem a very long time since the last Sky At Night Magazine?

The last one I have features the "5 Ancient Mysteries", has the next one been issued yet?
by robinflegg
Thu Feb 02, 2006 5:25 pm
Forum: General chat
Topic: Glass Prism
Replies: 13
Views: 6801

by robinflegg
Sun Jan 08, 2006 2:28 pm
Forum: Observing
Topic: SLR Camera Lens for the Sun?
Replies: 4
Views: 2872

SLR Camera Lens for the Sun?

Does anyone know what size/zoom lens I would need to attach to my SLR Camera in order to take a picture of the Sun, i.e. one where the Sun would fill the frame?

I had thought of attaching some baader film to a lens for the eclipse in March, but the current lens I have of 90mm is far too small.

Robin