Search found 80 matches

by Orchard47
Fri Mar 30, 2007 10:49 am
Forum: Observing
Topic: Experiment – Hands on the Sky
Replies: 14
Views: 9188

You know what they say about the size of a man's hand... :oops:
by Orchard47
Fri Mar 30, 2007 10:42 am
Forum: Observing
Topic: LUNAR OCCULTATION OF REGULUS
Replies: 6
Views: 2626

Anybody watch this then, or was I the only one? I have watched several occultations in the past and the star has always snapped out instantly like a light being switched off, but this one seemed to be more gradual. I estimate it took about one fifteenth of a second to disappear. I have been trying t...
by Orchard47
Sun Oct 23, 2005 8:16 am
Forum: Observing
Topic: Mars?
Replies: 3
Views: 4864

I was using my 14" dob without any filters at about 10.30pm, then again at about 1am. I tried several different eypieces such as a 12mm, a 6mm and a barlow. The moon was "boiling" quite badly so I am putting it down to very bad seeing. During the later observation, I could just make out a dark band ...
by Orchard47
Sat Oct 22, 2005 9:38 pm
Forum: Observing
Topic: Mars?
Replies: 3
Views: 4864

Mars?

Dusted off my scope this evening after being unused for six months for a quick look at Mars before is disappears again for two years.

Saw nothing but a big orange blob! Is there a dust storm going on there at the moment or something?
by Orchard47
Tue Jun 07, 2005 6:13 pm
Forum: General chat
Topic: Any Good Apollo Books?
Replies: 4
Views: 3687

I've got one called "Full Moon" published by Jonathan Cape in 1999 and is ISBN 0-224-05128-8. It's a big book - about a foot square and cost £35. To quote from the frontispiece, it's a photographic journey to the moon and back drawn from NASA's 32,000 pictures from the Apollo missions. There are lo...
by Orchard47
Mon Jun 06, 2005 10:54 am
Forum: Light pollution
Topic: Salou's Polluted Skies
Replies: 1
Views: 2930

I noticed this problem on the Greek Dodecanese Islands five years ago. Although the light pollution on the individual islands was not too bad, the general sky-glow was quite noticable.
by Orchard47
Thu Jun 02, 2005 7:09 am
Forum: Light pollution
Topic: Street Lights Off :)
Replies: 12
Views: 7774

In Oxfordshire, a man was hit by a car and killed after a "security" floodlight temporarily blinded the driver. My pet hate is those bright lights they have on motorways at the start end end of a contraflow. They shine right at you and I just can't see the point of them. If they must be used, why d...
by Orchard47
Sun May 29, 2005 9:05 pm
Forum: Telescopes and instruments
Topic: shop bought scopes
Replies: 30
Views: 16991

I built both my 14"dob and my 6" refractor. "A" does have a point that it is probably cheaper to buy one though. I wanted mine built in a hurry when comet Hale-Bopp was approaching in 1997, so I knocked the whole thing up in two weeks. I bought the mirror (£600)! and the rest of the parts, plywood,...
by Orchard47
Thu May 26, 2005 6:57 pm
Forum: Light pollution
Topic: Floodlit buildings - a new policy?
Replies: 2
Views: 3384

What football?
by Orchard47
Thu May 26, 2005 1:36 pm
Forum: Light pollution
Topic: Floodlit buildings - a new policy?
Replies: 2
Views: 3384

Floodlit buildings - a new policy?

Did anyone see that programme on BBC1 last night about tall buildings? They showed skyscapers in Hong Kong and Shanghai and what seems to be a new and alarming policy of floodlighting them at night, coupled with a system in which entire buildings change colour like roman candles. Some had laser beam...
by Orchard47
Mon May 23, 2005 3:31 pm
Forum: Light pollution
Topic: Proposal to eliminate Light Pollution
Replies: 4
Views: 4230

You have to take air pollution into account to make any sense of this argument. In a clear-air sky, the effect of the moon is actually quite negligible, but the air quality in the UK is pretty bad now and this scatters the moonlight to obscure all but the brightest stars. Just compare this effect ne...
by Orchard47
Fri May 20, 2005 11:59 am
Forum: General chat
Topic: May I introduce myself...
Replies: 9
Views: 4775

Hi Faith, I am particularly interested in your new dob, having built one myself. What sort will it be? (closed tube, truss etc). Any idea when it will be ready. Looking forward to seeing some photos of it. Please keep us updated about it's progress.
by Orchard47
Mon May 09, 2005 6:42 pm
Forum: Telescopes and instruments
Topic: Collimating a Sky-Watcher 130M - Slight Confusion
Replies: 20
Views: 13874

Just as a point of conversation, although I never have to collimate my dob (it's built like a battleship and even survives car journeys without re-collimating), I often test it by defocussing stars in and out just to make sure everything is OK. What I find sometimes is a horizontal oval when the foc...
by Orchard47
Mon May 09, 2005 1:23 pm
Forum: Observing
Topic: Satellites
Replies: 3
Views: 3607

I didn't see this Tom, but according to the Heavens-above website http://www.heavens-above.com/allsats.asp?Session=kebgceecmdgpclellinlhkjd&Date=38479.7291666667&Mag=3.5 the Cosmos 1093 Rocket Body passed through Virgo a couple of minutes after your stated time, but there is no mention of two object...
by Orchard47
Sun May 08, 2005 7:16 am
Forum: Telescopes and instruments
Topic: Collimating a Sky-Watcher 130M - Slight Confusion
Replies: 20
Views: 13874

They do look like grub allen screws to me Dave. Why don't you try removing the central screw and see if the assembly comes apart - then you will be able to see exactly what is there.