Archive for August, 2015

Double rainbow

August 31, 2015

My wife Karen was in the front yard early this morning and called out to come have at look at this nicely defined (and double) rainbow:


  
As she remarked, the spectrum of colours was really obvious in parts.

Nice start to the day, followed by a quick ride and dash to the bus.

DSLR photometry of BL Tel

August 28, 2015

 

 

Today I submitted an August 22 DSLR observation of the long period eclipsing variable BL Tel to the AAVSO international database.

My observation (9.124  (0.031) V), is shown under the cross-hairs in the images: Visual and Johnson V together and V alone.

BLTel-2015-08-22-BDJB-V-Vis

BLTel-2015-08-22-BDJB-V

Minimum should be happening around about now (~Aug 27).

I have images from Aug 25 that I’ll process this weekend. The conditions were less than ideal, but I managed to get some data before the clouds became a persistent problem.

I hope to take some more images this weekend.

Thanks to Peter Williams for prompting me to consider making observations of BL Tel which is nicely positioned high in the evening night sky now.