It is currently Tue Nov 20, 2018 12:26 am


Post new topic Reply to topic  [ 7 posts ] 
Author Message
PostPosted: Wed Oct 12, 2011 8:30 pm 
Offline

Joined: Thu Dec 20, 2007 11:41 am
Posts: 253
Location: Bruges (just over Channel)
hello, it's in a year now I observed them, I searched for obvious red stars, and came to 50. Here again is a webpage written:

http://users.skynet.be/fc219947/redstars/redstars.html

_________________
Thanks to the clear cold nights...


Top
 Profile Send private message  
 
 Post subject:
PostPosted: Wed Oct 12, 2011 9:10 pm 
Offline

Joined: Mon Jan 18, 2010 9:25 am
Posts: 5215
Thanks for the list.
I know you cannot give an accurate magnitude for these 50 red stars, and you observed them with a 15cm f/8 Newtonian I think, but it would be nice to know which are bright enough to see say in 50mm binoculars or a 80mm spotting scope.
Were they observed from a dark site?
Perhaps you could indicate which are easy in the 15cm or which are binocular or spotting scope stars.
Well done on observing them.

best regards, David


Top
 Profile Send private message  
 
 Post subject: Red Star Magnitudes
PostPosted: Sun Mar 04, 2012 9:07 am 
Offline

Joined: Fri Dec 10, 2004 10:34 pm
Posts: 291
Location: Surrey
David,

I have run the list of stars through Simbad and produced a table of magnitudes which I have put on my website at http://www.johnmurrell.org.uk/red-star%20information.htm

I will leave it there until I next have a cleanup to get some more space.

This shows what has been recorded for the magnitudes. The other option is to find the star number on the AAVSO database and then look up the light curve - most of these are variables which is why the magnitudes in the file must be used with caution.

The hyperlinks in the file should take you to the individual star pages on Simbad and then you can use Aladin to plot the field or get an image of the area

Enjoy

John

_________________
Engineer @ Work - Astronomer @ Play


Top
 Profile Send private message  
 
 Post subject:
PostPosted: Sun Mar 04, 2012 11:22 am 
Offline

Joined: Mon Jan 18, 2010 9:25 am
Posts: 5215
Dear John,
Thank you.

I am not computer literate but I think I can use this as I clicked on a likely binocular star and it was useful.

I will just list the brightest stars and go for them.

Anyway it has been mainly cloudy of late.

Regards, David


Top
 Profile Send private message  
 
 Post subject: Revised list
PostPosted: Sun Mar 04, 2012 12:30 pm 
Offline

Joined: Fri Dec 10, 2004 10:34 pm
Posts: 291
Location: Surrey
Hello David,

I have revised the page slightly by adding a B-V colour column as well so you can see how red they are - the larger number indicates they should be redder in case you are not aware.

The page name is the same but you might have to refresh the page or reload it in your browser to see the modified version.

I always find it amazing that the technology allows such things to be done relativly easily. The first part was done while I was drinking my breakfast coffee.

Regards

John

_________________
Engineer @ Work - Astronomer @ Play


Top
 Profile Send private message  
 
 Post subject: Another Red Star list
PostPosted: Sun Mar 04, 2012 12:37 pm 
Offline

Joined: Fri Dec 10, 2004 10:34 pm
Posts: 291
Location: Surrey
The Saguaro Astronomy club have a list of red stars at http://www.saguaroastro.org/content/downloads.htm

You need to click on the heading and then download the ZIP file.

There is an Excel File if you have Office or Open Office else a plain text file in CSV format

Another 300 or so stars to hunt down !

John Murrell

_________________
Engineer @ Work - Astronomer @ Play


Top
 Profile Send private message  
 
 Post subject:
PostPosted: Sun Mar 04, 2012 2:07 pm 
Offline

Joined: Mon Jan 18, 2010 9:25 am
Posts: 5215
Unfortunately John these computer terms are like my trying to understand Chinese script.

Sometimes I manage to find things despite this.

If I find a few red binocular stars O.K.

If not I can always find Mars or aircraft navigation lights. The latter really are red.

Regards, David


Top
 Profile Send private message  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group