That pretty much sums up what I see happening. The subtleties of CdC are remarkable!
Mel R. --- In [email protected], John Mahony <[EMAIL PROTECTED]> wrote: > --- Mel Richardson <[EMAIL PROTECTED]> wrote: > > > > Well, that is strange! With the 'short name' selected with my CdC > > Vsn 2.75.3 and a star 'Limit: Magnitude' of 7 in Label Options, no > > greek letters show but at 5 - 6, a few alphas & betas are displayed > > then the gammas, deltas, eps etc. as this parameter is lowered toward > > zero. > > Right. This setting determines the brightness range of stars to label, > so it doesn't try to label every star in the chart, if you don't want a > cluttered chart. > > Someone gave the details here a week or two ago, but I think the number > relates to the magnitude limits for displaying stars you set in > preferences>catalogs..>Stars1. There you set limits for displaying > stars, based on field width. Then the magnitude limit "n" you choose > in the label options means that a star has to be "n" magnitudes above > the star display limit to be labelled. So using a lower number means > more stars will be labelled. If you use a low number (or a narrower > field), stars that are so faint they have only a Flamsteed number, but > not a Bayer greek designation, are also labelled. > > It doesn't matter whether you use "short name" to get just the greek > letter (or Flamsteed number, etc), or the full name option. In either > case, the same stars will be labelled if the other settings are the > same. > > Beyer didn't have a hard-and-fast rule for how he labelled the stars, > but most often he started with the brightest star in a constellation as > alpha, and worked his way through the greek alphabet as star magnitudes > decreased. So a high mag limit in the label options will label only > alpha, beta.., while a lower number will go deeper into the alphabet. > > > And as I mentioned it also seems dependant on the true star > > magnitudes in the constellation displayed. > > It depends just on the magnitudes of the individual stars. A bright > constellation like Orion has many bright stars, so for given settings, > more stars get labelled there than in a fainter constellation. > > > BTW, the greek designations are > > always on screen in this condition. Left clicking will overprint the > > Greek letter with the regular string of names and numbers. Any > > thoughts on the difference? > > Left clicking "selects" the star, so more info is displayed. > > -John > > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com ------------------------ Yahoo! Groups Sponsor --------------------~--> What would our lives be like without music, dance, and theater? Donate or volunteer in the arts today at Network for Good! http://us.click.yahoo.com/TzSHvD/SOnJAA/79vVAA/1.XolB/TM --------------------------------------------------------------------~-> To Post a message, send it to: [email protected] To Unsubscribe, send a blank message to: [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/skychart-discussion/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
