Search found 99 matches

by hunterknox
Mon Aug 29, 2011 9:55 pm
Forum: Gallery
Topic: Milky way - reloaded.
Replies: 4
Views: 780

An astonishing set. I'd be made up for the year if I'd have taken even one of these pictures. Congratulations.
by hunterknox
Sun Aug 28, 2011 3:46 pm
Forum: Forthcoming meetings and events
Topic: Astronomical: The Beauty Of A Thousand Stars, Derby Museum
Replies: 1
Views: 2000

Thanks for this. I haven't been to Derby museum in ages but this sounds like something special. I'll definitely have to make a trip down.
by hunterknox
Fri Jul 29, 2011 8:43 pm
Forum: General chat
Topic: Earths first Trojan discovered
Replies: 4
Views: 906

Are all Lagrangian points saddle points? If so are trojan orbits stable only by virtue of the relative weakness of gravity?
by hunterknox
Sat Jul 23, 2011 8:17 pm
Forum: Telescopes and instruments
Topic: ASIGN Observatory II - Construction
Replies: 18
Views: 3629

Very jealous but I still appreciate this breakdown of the build. Looking forward to pics of the final product.
by hunterknox
Sun Jun 19, 2011 11:08 am
Forum: Absolute beginners
Topic: Solar observing...have I got it right?
Replies: 29
Views: 6856

David: I think you're right - it's de-cementing I'd be most worried about, I also wouldn't want to take chances with the glass itself.
by hunterknox
Sat Jun 18, 2011 10:25 pm
Forum: Absolute beginners
Topic: Solar observing...have I got it right?
Replies: 29
Views: 6856

Hi Kev, You can't go wrong with Baader solar film. It's around £15 for an A4 sized piece and is at least as good as a glass front-end filter. If you're feeling flush a Wratten #58 dark green filter really helps bring out the detail on the Sun. I was blown away with the difference it makes. Mine came...
by hunterknox
Mon May 30, 2011 10:44 pm
Forum: Imaging techniques
Topic: Webcam Imaging Advice
Replies: 4
Views: 3167

Sage advice from Brian. Manual tracking is just about do-able with an SPC 880, but it's difficult enough that it's not really any fun at all. Having beeen there and tried I would advise you not to bother. Also bear in mind that tracking accuracy increases with focal length. Not sure what scope you w...
by hunterknox
Sat May 21, 2011 7:21 pm
Forum: Telescopes and instruments
Topic: SW Flexitube GoTo or AUTO.
Replies: 2
Views: 1138

I don't have one myself but a friend has the 300p and it works like this: Set it down flat, point it North and aim it at the horizon (a spirit level is useful for precision). Press a button. Aim it at true North (polaris will do), then press the button again. The scope will now track whatever you po...
by hunterknox
Thu Apr 07, 2011 11:08 pm
Forum: Observing
Topic: Fireball observations from 2011 April
Replies: 7
Views: 1440

I saw the same thing from North Staffordshire. Venus-type magnitude. Travelling almost exactly in a North Westerly direction, maybe just a degree or two West of that. It moved from about 60 - 20 degrees in altitude in about a second. Quite spectacular.
by hunterknox
Sat Feb 05, 2011 6:58 pm
Forum: General chat
Topic: New SPA website design ..
Replies: 39
Views: 5021

Sorry guys but I have to disagree. Yes, Brian Cox is a particle physicist, but also one now of the public faces of astronomy and responsible for getting several of my friends enthused about astronomy in a way that I've been trying to for years. Binocular sales in my immediate circle have skyrocketed...
by hunterknox
Thu Jan 20, 2011 9:35 pm
Forum: Absolute beginners
Topic: Solar Observing
Replies: 7
Views: 2685

Hiya, You need some Baader solar film to cover the front end of your scope. http://www.firstlightoptics.com/proddetail.php?prod=bsolarfilm Should cost under £20 from any decent astro shop. You'll have to fashion it into a nice snug fitting cell Blue Peter-style with a bit of card. You get instructio...
by hunterknox
Sun Jan 09, 2011 8:28 pm
Forum: Telescopes and instruments
Topic: Solar viewing with SCT
Replies: 4
Views: 1718

No problem. I forgot to ask - how do you find solar observing with the SCT? Are tube currents an issue at all? I've been thinking of getting one for the increased resolution over my 4" refractor, but if heating/cooling is an issue maybe it's not ideal. I should also have mentioned that, while promin...
by hunterknox
Sun Jan 09, 2011 6:39 pm
Forum: Telescopes and instruments
Topic: Solar viewing with SCT
Replies: 4
Views: 1718

Hi Rachel, The answer is, sadly, no. The bandpass of even the narrowest night time H alpha filters is ~3 nanometres. Solar telescopes and filters typically have bandpasses of <1 angstrom (0.1 nanometres). Rather than having too little light left you'd have too much of the general red light from the ...
by hunterknox
Fri Nov 05, 2010 11:48 pm
Forum: Telescopes and instruments
Topic: PST
Replies: 2
Views: 1293

I used the Baader zoom with my PST for a while, but I went back to plossls. The Baader was a big unit for the back of a small telescope. I currently use a red snapper photo tripod, which does the job just fine.
by hunterknox
Thu Sep 02, 2010 9:53 pm
Forum: General chat
Topic: Jodcast September 2010
Replies: 8
Views: 1711

The Jodcast continues to be consistently excellent. I'm also a big fan of Astronomy Cast and Astronomy A-Go-Go. Anyone else got any great podcast recommendations?