#1  
Old 21-11-2017, 07:15 PM
Terry B's Avatar
Terry B
Country living & viewing

Terry B is offline
 
Join Date: Mar 2006
Location: Armidale
Posts: 2,789
BL Tel

BL Tel is a long period eclipsing binary with a period of 778 days. The eclipse takes over a month to complete and is a nice star to follow. I have taken photometry during the last 4 eclipses starting in April 2011. This year it was in September/October. The graphs are of this eclipse and the last one.
The next eclipse will be very difficult to record as it will be in the evening twilight in the west so hard to image. The 4 series are through BVRI filters.
Still an interesting system.
Attached Thumbnails
Click for full-size image (BLTel.png)
67.3 KB10 views
Click for full-size image (BLTel2017.png)
15.9 KB7 views

Last edited by Terry B; 22-11-2017 at 09:58 AM.
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 03:34 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement
Testar
Advertisement