Hi All,

 

I have been following the eclipsing system BL Tel in the lead-up to the up-coming eclipse predicted to centre on or around 2022 January 13, an unfortunately unfavourable event that coincides with this star passing through conjunction with the sun.  The initial decline may be visible from early December and the recovery to mid-February 2022, depending upon local circumstances/conditions.

 

However, during October BL Tel appears to have faded somewhat more than typically occurs during its small amplitude pulsations, as shown in the following visual observations:

 

TELBL     20210926.384     68           WPX

TELBL     20211004.429     70           WPX

TELBL     20211005.424     72           WPX

TELBL     20211025.495     71           WPX

TELBL     20211029.449     71           WPX

TELBL     20211031.444     76           WPX

 

It is cloudy here tonight (Monday 01 Nov) and possibly will be for the next couple of Spring nights so I am unable to confirm this unusual behaviour.  It would therefore be of assistance if others could check on BL Tel.  It is far too early for onset of the next eclipse so it may be just BL Tel is having a “Betelgeuse moment” with a greater than usual amplitude at minimum during the semi-regular pulsations of the red component.

 

Tks and regards

 

Peter Williams

Heathcote NSW

10x50mm binoculars  

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