Here is an image that I can see at the eyepiece of my telescope !
1237663916274810964


There is a galaxy hidden in this image ! 

Hello Zooites,
Sometimes I'm wondering where to ask some "silly" questions about astronomy, and on the other hand where to answer at some "silly" questions... According to astronomers, there are no "silly" questions. I agree of course. Nevertheless I know persons, adults and children, who don't ask certain questions, thinking they are "silly"... If it's just a lack of knowledge, it's not a problem. Here is the purpose of this topic !
Examples of questions ans replies :

Q : Why don't we see stars through the clouds with a telescope ?
R : Because the power of a telescope can't erase the fact that a cloud is opaque, and the light can't go through it, even with a powerful telescope.

Q : Why is it very dangerous to see the Sun directly with the eyes ?
R : Because retinae have no nerves, so if you have the sunlight on them, they "burn" because you feel nothing ! And you can go blind !! It's the pain that indicates at the body to stop a dangerous thing.

Et caetera... You can ask and reply if you think you have the right answer.
Let's go !!

Am I alone to see here a very very faint object ? I am not sure it's noise.. Could be a dwarf galaxy ? Unfortunately NED and SIMBAD are mute...

http://skyservice.pha.jhu.edu/DR8/ImgCutout/getjpeg.aspx?ra=39.36405&dec=30.99763&scale=0.396125&width=412&height=412&opt=&query=



The asteroïd has already been posted.

Here is another catalogue for dwarfs galaxies. Must be a small catalogue, Google is rather mute about it !

1237666464264093785  MAILYAN 019


As soon as I can get more info, I'll tell you.

Here too I can't really decide..
1237670446221820528


My personal poll...      real 30%
                                  artefact 70%
 

Hello, I'm very confused to disturb on the first day of this new tear, but I have an old question in my brain about the stars evolution, looking at the HR diagram.
Here it is :



...in the left diagram we see that when the star leaves the main sequence reaching the giants sequence, and then the supergiants sequence, its way obviously goes a bit on the right of the diagram.. And doing that, the star seems to change its spectral type. In the exemple the star is G-type in the main sequence and turns into a K-type. Is it like that we have to conclude from this scheme ?? I previously had the notion that the spectral type of a star was stable during its life... Where is the right thought ?
Many thanks in advance for your lights on this existential question !! 
Alexandre

Here is a strange object. NED and SIMBAD aren't clear enough for my undertsanding... Could you help please ?
1237667138563735614


First of all, is there an object here, or just a luminous artefact ?...

I'd like to open a blues gallery...
Here is my first contribution