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Venus + double star
- flt158
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4 years 9 months ago #108338
by flt158
Replied by flt158 on topic Venus + double star
Hi Finbarr. Thank you for your question.
The list I got over on www.cloudynights.com is this one: 2343 Carbon stars brighter than Mag. 13 .
Apologies it does not open on our website. I just copied and pasted it.
A guy called Eric (Cildarith) sent it to me originally nearly one year ago in April 2019.
Of course the list is huge.
And a lot of these carbon stars are not visible from Ireland at all for one reason or another.
Some are too low and some are too faint.
So I very slowly work my way through them.
I simply pick a constellation and find the right ascensions and declination of that constellation using the list.
For instance, Cancer ranges from 7 hours 55 minutes in RA to 9 hours 21 minutes. Declination ranges from +33 degrees north to +6 degrees north.
Needless to say I don't rush!!
I locate the star. Then print off a map using my Guide 9.1 DVD.
But to answer your original question: to observe 100 would be nice.
And It would be nice to find a decent carbon star as number 100.
I haven't come across your list before. Not that I can remember.
But all lists regarding these fascinating stars are always worthwhile.
By the way, I don't think there are many more carbon stars for me to find in Cancer.
There might be 2 or 3 more.
But V Cancri appears to be far too faint right now according to www.aavso.org
Clear skies to you, Finbarr.
Aubrey.
The list I got over on www.cloudynights.com is this one: 2343 Carbon stars brighter than Mag. 13 .
Apologies it does not open on our website. I just copied and pasted it.
A guy called Eric (Cildarith) sent it to me originally nearly one year ago in April 2019.
Of course the list is huge.
And a lot of these carbon stars are not visible from Ireland at all for one reason or another.
Some are too low and some are too faint.
So I very slowly work my way through them.
I simply pick a constellation and find the right ascensions and declination of that constellation using the list.
For instance, Cancer ranges from 7 hours 55 minutes in RA to 9 hours 21 minutes. Declination ranges from +33 degrees north to +6 degrees north.
Needless to say I don't rush!!
I locate the star. Then print off a map using my Guide 9.1 DVD.
But to answer your original question: to observe 100 would be nice.
And It would be nice to find a decent carbon star as number 100.
I haven't come across your list before. Not that I can remember.
But all lists regarding these fascinating stars are always worthwhile.
By the way, I don't think there are many more carbon stars for me to find in Cancer.
There might be 2 or 3 more.
But V Cancri appears to be far too faint right now according to www.aavso.org
Clear skies to you, Finbarr.
Aubrey.
The following user(s) said Thank You: Fermidox, Until_then-Goodnight!
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4 years 9 months ago #108339
by Fermidox
Replied by Fermidox on topic Venus + double star
Excellent. Here is a table showing how many stars are visible down to each magnitude:
www.stargazing.net/david/constel/howmanystars.html
Then if we round off the number of stars above mag 13 we get some 12.5 million. So, fewer than 1 in every 5,000 stars is a carbon star!
Clear skies,
Finbarr.
www.stargazing.net/david/constel/howmanystars.html
Then if we round off the number of stars above mag 13 we get some 12.5 million. So, fewer than 1 in every 5,000 stars is a carbon star!
Clear skies,
Finbarr.
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4 years 9 months ago #108343
by flt158
Replied by flt158 on topic Venus + double star
That is most interesting, Finbarr.
Thank you for your willingness to share these good facts with the rest of us.
Clear skies,
Aubrey.
Thank you for your willingness to share these good facts with the rest of us.
Clear skies,
Aubrey.
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4 years 8 months ago #108371
by Fermidox
Replied by Fermidox on topic Venus + double star
The following user(s) said Thank You: michael_murphy, flt158, Until_then-Goodnight!
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4 years 8 months ago #108373
by Until_then-Goodnight!
Replied by Until_then-Goodnight! on topic Venus + double star
What a nice photo Finbarr. Thanks for sharing it with us.
Clear skies,
Darren.
Clear skies,
Darren.
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