Black Widow

Raul G · Post by **Raul G** » Mon Dec 17, 2007 7:04 pm

I was looking for a fotomicrograph to make a Christmas card. I have a thing for spiders, but I don't think this image would make a nice holiday card.
Merry Christmas to all!!!

Ken Ramos · Post by **Ken Ramos** » Tue Dec 18, 2007 3:03 am

That's a pretty close look at a pretty mean little spider. I am not a big spider fan but I have found that Black Widows have some very beautiful abdominal markings other than that little orangish-red hour glass. Being an arachniphobic, I still say a very good shot!

rjlittlefield · Post by **rjlittlefield** » Tue Dec 18, 2007 9:14 am

Raul G wrote:I was looking for a fotomicrograph to make a Christmas card. I have a thing for spiders, but I don't think this image would make a nice holiday card.

It's a niche market, but I like the photo! Lovely textures on this beast.

In the green background, there are several vertical lines of dots that have me very puzzled. The best I can figure is that they're sensor dust that have been stretched into lines by stacking. But they're not radial like I usually get from magnification changes. Hhmm... Does your scope happen to shift sideways as it focuses?

--Rik

Raul G · Post by **Raul G** » Tue Dec 18, 2007 10:36 am

Hi,

Oh yes! I forgot to erase the dots.
They are the little registration marks that Helicon focus uses for stacking.

Raul

Raul G · Post by **Raul G** » Tue Dec 18, 2007 10:37 am

Hi Ken,

Thanks
I notice the marks!
I will get into them.

Raul G · Post by **Raul G** » Thu Jan 03, 2008 2:44 pm

Hey Rik!

What I thought it was a registration mechanism, turned out to be a stacking artefact from dirt on the sensor.

Sorry, my mistake.

Raul G.

jmlphoto · Post by **jmlphoto** » Thu Jan 03, 2008 5:13 pm

i used to see these ALL the time, havent for a while. never got too look at one that close usually my foot or something got to them first. specially after what i saw it do to a friend after it bit him. excellent shot btw, i wouldnt want it as a christmas card lol.

rjlittlefield · Post by **rjlittlefield** » Thu Jan 03, 2008 7:27 pm

Raul G wrote:What I thought it was a registration mechanism, turned out to be a stacking artefact from dirt on the sensor.

Ah yes...and I'll bet your scope is one of the type that shifts the image sideways as it focuses.

Thanks for revisiting the question! (And I see the dots are gone now -- looks much better.)

--Rik

[Edit: well, I thought they were all gone. Looks like still a few in one line at the very bottom.]

Black Widow

Black Widow

Re: Black Widow

Little Dots

Marks

mistake

Re: mistake