http://tech.groups.yahoo.com/group/staranalyser/ staranalyser Tue, 08 Jul 2008 21:33:29 GMT Mark Dawes http://tech.groups.yahoo.com/group/staranalyser/message/1180 http://tech.groups.yahoo.com/group/staranalyser/message/1180 Robin, all the images were captured from a fixed tripod, so I could only get about 5 secs exposure before trailing. Hope to extend it a bit when I put it on Tue, 08 Jul 2008 14:44:44 GMT staranalyser http://tech.groups.yahoo.com/group/staranalyser/message/1179 http://tech.groups.yahoo.com/group/staranalyser/message/1179 Hi Mark, Interesting setup. That should give close to the maximum resolution possible from the Star Analyser. (A nice small star size without giving the Mon, 07 Jul 2008 05:16:37 GMT Mark Dawes http://tech.groups.yahoo.com/group/staranalyser/message/1178 http://tech.groups.yahoo.com/group/staranalyser/message/1178 Hello everyone, it's been a while since I posted any new files. I have placed a number of spectra in this folder of the Files section, /User_Folders/MarkD/. Wed, 02 Jul 2008 21:45:03 GMT Ken Harrison http://tech.groups.yahoo.com/group/staranalyser/message/1177 http://tech.groups.yahoo.com/group/staranalyser/message/1177 Robin, As you say, the Star Analyser can get down to pretty faint magnitudes. I stand corrected!! Ken Wed, 02 Jul 2008 19:09:59 GMT staranalyser http://tech.groups.yahoo.com/group/staranalyser/message/1176 http://tech.groups.yahoo.com/group/staranalyser/message/1176 Hi Ken, ... The grating in the Lhires is 1200 or 2400 lpm compared with 100 in the Star ... into a ... Actually this is an underestimate as it also depends on Tue, 01 Jul 2008 23:13:08 GMT Jeff Hopkins http://tech.groups.yahoo.com/group/staranalyser/message/1175 http://tech.groups.yahoo.com/group/staranalyser/message/1175 A nice thing about the Lhires III is that you can easily interchange the gratings. While I believe the unit normally comes with the 2,400 l/mm grating, 1,200, Tue, 01 Jul 2008 21:48:04 GMT Ken Harrison http://tech.groups.yahoo.com/group/staranalyser/message/1174 http://tech.groups.yahoo.com/group/staranalyser/message/1174 Dominique, A couple of reasons: The grating in the Lhires is 1200 or 2400 lpm compared with 100 in the Star analyser, this means simplistically that the star Tue, 01 Jul 2008 21:14:16 GMT dominique hoste http://tech.groups.yahoo.com/group/staranalyser/message/1173 http://tech.groups.yahoo.com/group/staranalyser/message/1173 hello, i follow the discussion ... i was suprised about the exposure times of objects with the Lhires III: 15 minutes to 1 hour ..? with the Star Analyser i Sun, 29 Jun 2008 00:50:23 GMT http://tech.groups.yahoo.com/group/staranalyser/message/1172 http://tech.groups.yahoo.com/group/staranalyser/message/1172 Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the staranalyser group. File : Sun, 29 Jun 2008 00:40:27 GMT http://tech.groups.yahoo.com/group/staranalyser/message/1171 http://tech.groups.yahoo.com/group/staranalyser/message/1171 Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the staranalyser group. File : Fri, 27 Jun 2008 19:05:31 GMT staranalyser http://tech.groups.yahoo.com/group/staranalyser/message/1170 http://tech.groups.yahoo.com/group/staranalyser/message/1170 Hello Marcelo, Thank you. It is interesting for to see some southern stars. There is a nice strong emission line in the blue in your WR78 spectrum. Is it He Fri, 27 Jun 2008 15:17:05 GMT Marcelo Rios http://tech.groups.yahoo.com/group/staranalyser/message/1169 http://tech.groups.yahoo.com/group/staranalyser/message/1169 Hello The night of the 23/06/2008 I could take new phantoms, WR78 and HD 6271 WR78 http://www.espacioprofundo.com.ar/foros/about5134.html HD 6271 Mon, 23 Jun 2008 05:49:37 GMT Olivier Thizy http://tech.groups.yahoo.com/group/staranalyser/message/1168 http://tech.groups.yahoo.com/group/staranalyser/message/1168 Jeff, Thanks for the report. An very nice alternative to neon line, for use with DSI Pro I, would be to use telluric (atmospheric) lines. There are at least 5 Sun, 22 Jun 2008 16:33:05 GMT Jeff Hopkins http://tech.groups.yahoo.com/group/staranalyser/message/1167 http://tech.groups.yahoo.com/group/staranalyser/message/1167 For those who wish to venture into spectroscopy with a Lhires III spectrograph and use DSI cameras, here are some tips. A DSI Pro (I) has a field of view too Sat, 21 Jun 2008 19:35:34 GMT dominique hoste http://tech.groups.yahoo.com/group/staranalyser/message/1166 http://tech.groups.yahoo.com/group/staranalyser/message/1166 hello Robin, thanks. Your answer was the answer on my question. i was confused between the radial velocity of the star and "the rotationel + doppler velocity