Search found 902 matches

by Eclipse
Thu Aug 30, 2012 1:32 pm
Forum: Telescopes and instruments
Topic: Is my Power Tank dead?
Replies: 11
Views: 4386

Re:

The Bat wrote:Thanks, guys. I thought this might be the case. I was just wondering whether 4 years was a reasonable life expectancy and whether replacement batteries were available as a long shot (guess not!).

Oh well...

Cheers,

Rachel
Probably find a motorcycle battery with right Ahr to fit!
by Eclipse
Thu Aug 30, 2012 12:19 pm
Forum: Telescopes and instruments
Topic: Laser pointers
Replies: 15
Views: 6964

Re: Laser pointers

astroeddie wrote:Guys,

Where can I buy one of these stronger laser pointers.
Would like one to take to sea. To show the crew objects when they are out with me.

Eddie
Do a Google. I think my most powerful laser was on eBay.
by Eclipse
Fri Aug 24, 2012 4:56 am
Forum: Telescopes and instruments
Topic: Laser pointers
Replies: 15
Views: 6964

Re: Laser pointers

brian livesey wrote:A problem I find with more powerful laser pens ( like my 50mW one ) is overkill. The stronger beam washes out the target object.
Agree to a large extent - which is why my 300mW is used for other things. I find 50mW perfect for mounting on the scope.
by Eclipse
Sun Aug 19, 2012 2:01 am
Forum: Absolute beginners
Topic: Red dot finder
Replies: 5
Views: 2523

Re: Red dot finder

I found the best place for a red dot finder was in the trash, and my poor back agreed 100%. My SV102ED currently sports a green laser pointer for coarse finding, and a 50mm optical finder with a 90 degree eyepiece for finer adjustment.
by Eclipse
Mon Aug 13, 2012 2:00 am
Forum: Telescopes and instruments
Topic: Laser pointers
Replies: 15
Views: 6964

Re: Laser pointers

You will need more than 1 mW for pointing out astronomical objects. The beam pointing up into the sky is only visible because dust particles get illuminated and reflect light - this is different to illuminating an object in a lecture theatre, where you will get a bright point of light where the beam...
by Eclipse
Sun Jun 05, 2011 9:17 am
Forum: General chat
Topic: Global Warming
Replies: 97
Views: 13923

GeorgeC wrote:
kingcomet wrote: Am I stupid?
Do you really want an answer to that?
There was a global warming panicker on the box recently who used exactly that word to describe those who pointed out that the climate is ALWAYS changing, and in recent recorded times has been a lot warmer than it is now.
by Eclipse
Sun Jun 05, 2011 8:32 am
Forum: General chat
Topic: "Wonders of the Solar System" book mistakes
Replies: 32
Views: 4854

stella wrote:Here's one from my local 'free' newspaper.
Programme Listing:

Sunday, June 5

12.10 The Sky at Night: The teams are challenged to develop
and pitch a new pet food.


(8 out of 10 astronomers prefer Whiskers.)?
Sounds about as accurate as my local free paper.
by Eclipse
Sat Jun 04, 2011 10:57 am
Forum: Absolute beginners
Topic: just purchased bresser telescope and need help to set it up
Replies: 3
Views: 2427

Is that the scope that LIDL sold on an EQ mount for €70?? I sold mine - and regret it - it was great value.
by Eclipse
Sat Jun 04, 2011 10:20 am
Forum: Telescopes and instruments
Topic: Green Laser Pointers
Replies: 44
Views: 21773

I use a 50 mW laser pointer to align my scopes, clamped in a purpose designed adjustable mount. I hold the button down with a specially carved, high tech clothes peg, and find lithium batteries keep it shining brightly for ages. In winter I warm the business end with the wife´s hairdryer. I also hav...
by Eclipse
Sat Jun 04, 2011 10:10 am
Forum: General chat
Topic: Star viewing gripe
Replies: 7
Views: 998

David Frydman wrote:What about a right angle finder maybe the upright image one.
Regards, David
I use a right angled finder AND a green laser pointer.
by Eclipse
Sat Jun 04, 2011 9:32 am
Forum: General chat
Topic: Weight
Replies: 10
Views: 1490

Maybe I should point out that the kilogram is the SI unit of MASS.

Weight is the force between a body and whatever planet it happens to be on and is correctly expressed in NEWTONS.
by Eclipse
Sat Jun 04, 2011 9:25 am
Forum: General chat
Topic: "Wonders of the Solar System" book mistakes
Replies: 32
Views: 4854

Increasing trend nowadays, a lack of knowledge of English grammar. Even in this hallowed forum you will find plenty of people who do not know the difference between there, their and they´re; your and you´re; its and it´s.

Possibly cause by a surfeit of computer speak?
by Eclipse
Thu Feb 25, 2010 3:52 pm
Forum: General chat
Topic: Global Warming
Replies: 97
Views: 13923

joe wrote: And if you're wrong?
Maybe Homo sapiens will become extinct. Do you think that will be such a big disaster??
by Eclipse
Thu Feb 25, 2010 3:23 pm
Forum: General chat
Topic: Global Warming
Replies: 97
Views: 13923

And in a couple of decades we will all realise what a ridiculous con this ´global warming´panic has been.
by Eclipse
Thu Feb 25, 2010 2:26 pm
Forum: Absolute beginners
Topic: Telescopes under about £400
Replies: 9
Views: 7048

Agree with all here. I have a Celestron Nexstar 4SE, but most of the money went on the electrics, which aren´t the most reliable of things, especially now they are getting a bit older. Put your cash into a basic equatorial mount and a half-decent 80 mm refractor or a larger Newtonian, if you can lea...