Terry B
05-08-2008, 10:49 PM
Dear All
This very interesting star in Sagittae is the June variable star of the month for the AAVSO. See http://www.aavso.org/vstar/vsots/
It is a star with a very young pn starting to form around it. The pn is about 30 arcsecs across and can be resolved easily. Skymap pro gives the pn a mag of about 16 so it is pretty dim.
I took 40 mins of lum and 15 mins of each colour last night with my little CCD but the seeing was pretty crap and the best I could get was a FWHM of about 4.5 arcsecs. The scope was my VC200L at 1800mm. The end result is attached. I haven't bothered fixing the colour too much as it is only a test.
Anyone else want to give this star a go?
The AAVSO states they would like to see a colour image of it.
It is at RA 20 11 56.1
Dec +20 20 4.0
This is in the north for us but still reasonably placed. It is reasonably close to the dumbell nebula.
This very interesting star in Sagittae is the June variable star of the month for the AAVSO. See http://www.aavso.org/vstar/vsots/
It is a star with a very young pn starting to form around it. The pn is about 30 arcsecs across and can be resolved easily. Skymap pro gives the pn a mag of about 16 so it is pretty dim.
I took 40 mins of lum and 15 mins of each colour last night with my little CCD but the seeing was pretty crap and the best I could get was a FWHM of about 4.5 arcsecs. The scope was my VC200L at 1800mm. The end result is attached. I haven't bothered fixing the colour too much as it is only a test.
Anyone else want to give this star a go?
The AAVSO states they would like to see a colour image of it.
It is at RA 20 11 56.1
Dec +20 20 4.0
This is in the north for us but still reasonably placed. It is reasonably close to the dumbell nebula.