[APBeta] NGC247 and the Position Angle

[David Hill]

Paul R. -

 

With regards to ID #3236 and your expressed interest in the non-angle scenario, I did some applied research.  The position angle for NGC247 (pa = 171 deg) is mentioned in the notes, but it does not appear (as anything other than pa = 0) in the table.  Call it serendipity; Call it what you wish.  But, the NGC catalog figure given in the notes matches the Deep Sky Field Guide to Uranometria 2000.0 (EPOCH) for sky chart tables GX #306 and GX #307; it is pa = 172 deg here.  Does this change your motivations?

 

David H. -  

 

 

 

 

 




ID
3236

Created
11/21/09

Reporter/s
Gary Ferguson

Version
2.0b67

Type
Bug

Status
Fixed

Platform
All

Resolved
11/22/09

Version
2.0b68

Title
Orientation of NGC247

Description

There does not seem to be a consensus as to the orientation of NGC247. Herschel and Caldwell have it rotated 90deg from how Herschel-I, NGC, and AP DSO have it oriented.


Developer
Analysis

This is because several of those catalogues do not have a position angle defined (and hence use 0 degrees). I suppose I should think about discriminating the non-angle case.


Resolution

Fixed. Galaxies now have a semi-major-axis bar pointing in the direction of the position angle. If no position angle is specified, no bar is drawn.

 

 

 
 		 	   		  
_________________________________________________________________
Windows 7: It works the way you want. Learn more.
http://www.microsoft.com/Windows/windows-7/default.aspx?ocid=PID24727::T:WLMTAGL:ON:WL:en-US:WWL_WIN_evergreen:112009v2
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.astroplanner.net/pipermail/apbeta-astroplanner.net/attachments/20091123/acd64a3b/attachment-0002.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: NGC247.xps
Type: application/vnd.ms-xpsdocument
Size: 154883 bytes
Desc: not available
URL: <http://lists.astroplanner.net/pipermail/apbeta-astroplanner.net/attachments/20091123/acd64a3b/NGC247.xps>