Search found 139 matches

by Geoff Burt
Tue Apr 29, 2008 12:21 pm
Forum: General chat
Topic: 'Intech' Planetarium
Replies: 1
Views: 765

'Intech' Planetarium

Dear All, Those living in or visiting Hampshire might well be interested in the 'Intech' science centre near Winchester. A large new planetarium opened there at Easter, http://www.intech-uk.com/folders/planetarium/ The science centre is a 'hands on' exhibition which is ideal for kids and the astrono...
by Geoff Burt
Thu Jan 24, 2008 6:54 am
Forum: General chat
Topic: The man on mars :-)
Replies: 16
Views: 3337

Dear All,

Good for a laugh :lol: but there is a sense of, 'Oh, if only it were true...'


Best Wishes,

Geoff Burt :)
by Geoff Burt
Tue Jan 08, 2008 9:30 am
Forum: General chat
Topic: New Look Hampshire AG Website
Replies: 3
Views: 1302

Hi Dave, Seconded. Steve does a tremendous amount of work for the Group (I wonder if he's blushing while reading this.... :wink: ). As you know, Hampshire AG benefits greatly from an enthusiastic and dedicated committee which makes the Group the success it is. Long may it be so. Best Wishes, Geoff :D
by Geoff Burt
Tue Jan 08, 2008 7:16 am
Forum: General chat
Topic: New Look Hampshire AG Website
Replies: 3
Views: 1302

New Look Hampshire AG Website

Dear All, Thought you might like to take a look at the new-look Hampshire Astronomical Group website. The link is, http://www.hantsastro.org.uk/ Anyone who happens to be in this part of the world might also be interested in coming along to the public Open Evenings and Lectures 8) . Best Wishes, Geof...
by Geoff Burt
Fri Dec 21, 2007 10:23 am
Forum: General chat
Topic: UK astronomy under threat
Replies: 80
Views: 25874

Dear All,

Yes OK, the first line should say 'oppose' not 'propose' :oops:


Best Wishes,

Geoff Burt :D
by Geoff Burt
Fri Dec 21, 2007 10:20 am
Forum: General chat
Topic: UK astronomy under threat
Replies: 80
Views: 25874

Dear All, Down my way, a group of neighbours got together last year to propose a development scheme by the local authority. We submitted quite a sizeable petition but were 'tipped off' that the blighted authority would only count the petition as a single objection :roll: and it would be far better t...
by Geoff Burt
Fri Nov 30, 2007 7:48 am
Forum: General chat
Topic: Oldham Meteorite ?
Replies: 19
Views: 14116

David, The answer to your question is that the picture doesn't show Eric Sykes' 'meteorite'. The other day, I contacted the 'Goon Show Preservation Society' who in turn referred 'The Strange Case Of The Meteorite That Wasn't' to the man himself :shock: . Eric has seen your picture and tells us that ...
by Geoff Burt
Wed Nov 21, 2007 6:46 am
Forum: Telescopes and instruments
Topic: 'Moonfish' 2" Eyepieces
Replies: 6
Views: 2731

Dear All, Many thanks for the above comments :D I notice that Telescope House sell their Revelation 2" eyepieces for about £50. Does anyone have any comments about these? They do seem very reasonable compared to some of the Nagler eyepieces, for instance, which can be up to 10 times the price! Best...
by Geoff Burt
Mon Nov 19, 2007 1:13 pm
Forum: Telescopes and instruments
Topic: 'Moonfish' 2" Eyepieces
Replies: 6
Views: 2731

'Moonfish' 2" Eyepieces

Dear All, Does anyone know a stockist in southern England where I can get a 15mm f.l. 2" 'Moonfish' eyepiece or do I have to resort to an internet purchase ? 'Venturescope' don't deal with 'Moonfish' products and apparently, neither do the 'Sussex Astronomy Centre'. Thanks and Best Wishes, Geoff Bur...
by Geoff Burt
Wed Nov 14, 2007 2:40 pm
Forum: General chat
Topic: Sketching
Replies: 17
Views: 4955

Dear All, For anyone considering sketching their observations, all you need is half-a-dozen pencils (2H, HB, B, 2B, 4B, and 6B) to give an adequate tonal range, an A5 sketch pad which is easy to hold at the eyepiece, eraser and sharpener. You do not need to make any artistic statements, just practic...
by Geoff Burt
Mon Nov 12, 2007 3:53 pm
Forum: General chat
Topic: Sketching
Replies: 17
Views: 4955

Hello Jack,

IMHO, sketching is THE best way to develop your observational skills ! 8)


Best Wishes,

Geoff Burt :D
by Geoff Burt
Fri Nov 02, 2007 11:47 am
Forum: Astrophysics
Topic: Speed of light
Replies: 45
Views: 19696

Hello Dave, So essentially, it's a matter of the refractive index of the medium? The change in velocity of the light occurs at the boundary of the medium and as, in this example, diamond has a refractive index of 2.0 this gives a light velocity of c/2 or half-speed, regardless of the size or number ...
by Geoff Burt
Thu Nov 01, 2007 2:09 pm
Forum: Gallery
Topic: Holmes sketch
Replies: 13
Views: 5301

Hi Joe,

Much appreciated 8)

Geoff Burt :)
by Geoff Burt
Thu Nov 01, 2007 1:31 pm
Forum: Gallery
Topic: Holmes sketch
Replies: 13
Views: 5301

Hello Joe,

Ref. your superb drawing 8) , what technique did you use?

Did you make the drawing in pencil on white paper and 'reverse' it on your PC or use conte on black paper? How did you achieve such subtle shading?


Best Wishes,

Geoff Burt :D
by Geoff Burt
Thu Nov 01, 2007 1:19 pm
Forum: Astrophysics
Topic: Speed of light
Replies: 45
Views: 19696

Dear All, A colleague spotted a statement on the internet that the speed of light is halved when travelling through diamond. Now, I have very little grasp of physics :oops: so please bear with me. If the internet statement is correct, does the size of the diamond have any effect? To my mind, the inf...