You can check the camera and the barlow by rotating them alternatively, and look if the orientation of the 'fumarolas' change. Probably not, they are generally well built and you should have noticed the problem sooner.
The most probable is a slight mis-collimation. Even if the telescope seems well ...

Hola
Impressive images Rafael Obviously you can obtain accurate measurements of sub-arcsecond doubles. About the "fumarolas", they can be seen on all images. The turbulence is changing randomly, they are more likely caused by a misaligned optical path.
Keep preciously your images of eta CrB, it's ...

Hola amigos,

It's raining and raining I spend my time as I can.
Two more dancers I found in my observations archives.
STF1785
2002.289: 174°8 3"31
2010.221: 180°9 3"10

STF2130AB (Mu Dra)
2002.416: 016°7 2"28
2010.259: 007°7 2"39

stf1785-anim.gif
stf2130-anim.gif

Un abrazo,
Florent

Nobody knows if Galileo really muttered it at his trial. He surely didn't know that these words apply to doubles stars. Maybe you remember an old topic from last year ( http://www.asociacionhubble.org/portal/index.php/foro/viewtopic.php?f=63&t=36153 ).
I told about the orbital ...

Hola Nachote,

Excellent travail, c'est une très belle trouvaille
Un fuerte abrazo amigo
Florent

Hola,

Amigo Nachote you find the good word: something like the paradise. Some angels were missing but it was really a great and incredibly well orchestrated and rich meeting, above all it was an immense pleasure to share precious hours with friends. Don't miss the next
Un abrazo,
Florent

Hola amigos

Marijose, no doubt that you are in perfect hands with Nachote and Rafa , they will drive you on the best road in the good language!
Sorry I can't write in spanish nevertheless it seems that darks aren't applied in your image posted on flickr. Applying dark correction seems necessary ...

.../...
Near perfectly equilibrated couples with J 3183, STI2888, STI2900,STI2904 and STI2874
j3183sti2888sti2900sti2904sti2874.jpg
I love this very nice triangle STI2905 sti2905.jpg
I stop now to bother you with my images. Good bye Lizzard!

Thank you Edgar, Rafa and Juan-Luis for this great and ...

Hola
Some new strips from the project es533sti2831es2720.jpg Left to right: ES 533, STI2831,ES 2720
es846es1289es1471par3.jpg
Large magnitude differences : ES 846, ES 1289, ES 1471 and ES 2270
bu452bu1332.jpg
BU 452 and BU 1332 : again large magnitude difference again with very faint C ...

Que tal amigos?
Baxter I hope you are well now and ready for the project. Excellent Nachote!

I push some other images from the project, I hope you'll like. STI2745 is an interesting system. The brighter component is B, it shows a large motion between POSS I and more recent POSSII, 2MASS and SEDA ...