Rcw 58

[sjastro]

A faint example of a nebula surrounding a Wolf Rayet star.

http://users.westconnect.com.au/~sjastro/rcw58c.html (http://users.westconnect.com.au/~sjastro/rcw58c.html)

LRGB image 210m L=R, 60m R, 60m G, 60m B ST-10XME, BRC-250

Comments welcome.

Steven
http://users.westconnect.com.au/~sjastro/small (http://users.westconnect.com.au/~sjastro/small)

[jase]

Nice one Steven. Enjoy these "non-mainstream" objects. What was the focal length and sub exposure times?

[Geoff45]

Really unusual picture. great work.
Geoff

[Ric]

A nice capture Steven.

What is the magnitude of this object?

Cheers

[glenc]

That is a very clear image of an unusual object. It looks like a PN.
The central star is mag 7.7, HIP 54283.
RCW 58, having a prominent ring of stellar ejecta, is classified as an E-type nebula according to:
http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=5234280

Thanks for posting this Steven.

[sjastro]

Thanks Glen.



Ric,

The only information I have is on the Wolf-Rayet star but nothing on the nebula. It is however very faint, the integrated magnitude is no doubt fainter than 12.



Thanks for your comments Geoff.



Jase,

The FL is 1268mm and the sub exposures are 10 minutes.

Regards

Steven

[Alchemy]

6 hrs plus... i guess thats what you have to do to get the goods, im still going less than 2 hrs...... it will be a while before i go that long , but the results speak for themselves:thumbsup:

[glenc]

Tried to see RCW 58 this morning with a 12" dob and UHC filter, did not see it.
Will try again after the new moon.

[Garyh]

Wow...large image scale there Steve. Now thats something I havn`t seen before.
Nice work!, something that us DSLR boys can forget about imaging I reckon!..lol
cheers Gary

[sjastro]

Thanks Gary. I suspect you are right.

Regards Steven



Glen, an OIII filter will probably be effective on this object.

Regards Steven



Thanks Alchemy

My imaging times are minor compared to other SBIG users. It's not uncommon for 10 hrs+ total exposure for bright objects and thats not including mosaics which might be 4X longer. Some Ha imagers will go 20 hrs+.

Clear skies Steven