Double Star observing

[Ric]

Hi all

Following on from Suzy's variable star thread I'd thought I'd ask a few questions regarding Double Stars.

I've always enjoyed viewing them but lately I been thinking about taking measurements of the PA and separation.

There is a lot of useful information on the web regarding micrometers and astrometric eyepieces used to take these measurements as well why these measurements are important. I see this as yet another way that amateurs can contribute in the astronomy field.

There is one piece of the puzzle missing. Where do I send this data once I've collected it.

I've searched the web but can't seem to find any organisation or reference to one that I can pass on the data to. I have checked sites like the Webb Society and the USNO but they make no mention about accepting data.

I would be grateful if anyone can point me in the right direction as to who accepts double star data.

Cheers

[Coen]

Could try: http://www.jdso.org/ and follow any information from their website.

[Ric]

Thanks Coen for the link, it definitely looks like an interesting site.

Cheers

[Blue Skies (Jacquie)]

There are some double star measurements done as a result of videoing lunar occultations now, but I'm not organised enough to give you more details, unfortunately. IIRC you need two people doing the same event in different locations to get an accurate result, though.

[Rex]

G'day Ric, I too like dble stars but have never thought of recording any data, not that I have the equipment for that, but its an interesting thought. Please keep us informed if you find anything because, like you I think if you can do something you enjoy and be useful at the same time it just makes the experience even better.

[Karls48 (Karl)]

Have a look on Reduc - free software for measuring PA and separation of binary stars.
http://www.astrosurf.com/hfosaf/uk/tdownload.htm

[AstroJunk (Jonathan)]

Carl and Ric, we have a very active Double star section at the AAQ, who are employing a number of techniques to make valuable scientific measurements.

In addition to the purely visual approach, if you have a camera such as a Gstar or DSI (or better) there are some great ways of gathering very accurate measurements.

If you email me (not PM) through the site, then I will forward your details through to the section director, Tim, who will be happy to help you get going (no need to be a member).

http://www.nacaa.org.au/2010/talks?page=6

As Jacquie mentions, the Occultation people are now actively observing ultra close doubles (less that .5 arc second separation) and getting good results: http://www.jdso.org/volume6/number3/Loader.pdf . This does require some specialist timing equipment, but is yet another example of how amateurs can do real science from their back yards!

[Ric]

Thanks for the link to Reduc Karl, I've just had a quick browse through it and it's definitely one to look further into.

Hi Rex, that link may be of interest to you as well. I notice by your avatar that you seem to be a gentleman that would enjoy motorcycling not unlike myself.

Cheers

[Ric]

Hi Jonathan, thanks for the info and I'll be in touch with my details.

Cheers

[Rex]

Thanks Karl & Jonathon for the links, I'll have to have a read.

Yes Ric I have been known to take a road trip or two in my time. There's nothing better than a bunch a mates and their Ladies, riding to nowhere for an overnight trip, and then getting up next day and riding home again. Good to hear someone else enjoys the feeling of freedom you get from jumping on a bike and cruising down the road.

[Ric]

Yep, you definitely can't be the road trip.

My wife and I are planning one to Queensland in february next year for a mates 50th.

A 1200cc Cruiser and trailor, look out Highway 1.