Thursday, April 08, 2021

looking for B (Halifax)

From the backyard with the C8, on 17 Mar '18, I tried to view 11 Leonis Minoris (HU 1128). Could not see the companion and I chalked it up to the magnitude delta.

So on 5 May '18, I sent the Burke-Gaffney Observatory over to have a look-see, snap! It's not definitive but there was a hint of a star, close in, to the primary. To the north-east. Perhaps. Maybe.

While working this, I went to the horse's mouth. The WDS showed a star not has dim as SkyTools alluded to, close, and about the 10 o'clock position. Huh. Maybe I was onto something... And maybe a faster exposure help.

I queued up another job at the end of last year. Half the exposure duration.

But when I checked the BGO images from 28 Dec '20, it was clear something had gone terrible wrong, with either the tracking, the stacking, or both. Sadly, all the channels were mucked up.

On 31 Mar '21 I submitted another job into the BGO robot queue. It shot the target on 9 Apr 2021 00:00:42 ADT.

No weirdness. i.e. to tracking or or problems with the stack. Not perfect, mind you, but good. 

And then I noticed something weird. There is something bright at 90 degrees! And it was in all the channels...

What the heck is that?!

All images: 20 stacked shots. FITS Liberator, GIMP. North is up; east is left.

double star 11 LMi in luminance

Luminance only, ½ second subexposures.

double star 11 LMi in red

Red only, 1.5 second subexposures.

double star 11 LMi in green

Green only, 1.5 second subexposures.

double star 11 LMi in blue

Blue only, 1.5 second subexposures.

This is very interesting. Queued up a new job right away.

Need more data...

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