It is currently Sat Feb 23, 2019 10:08 am

News News of Ask a silly (astronomy) question

Site map of Ask a silly (astronomy) question » Forum : Ask a silly (astronomy) question

Got a beginners' question? No matter how elementary, our friendly forum community and magazine writers will answer it.

Conversion of HIP numbers to SAO numbers - help!

I use Stellarium on my PC to orientate the night sky, and for star hopping - in this software package all the stars are given HIP numbers. However, my Celestron uses Nexstar which wants an SAO number entered to find a star. So at the moment, other than for the more common/brightest stars (which are listed under Nexstar), I cannot instruct guide my telescope to go to other stars that I find on Stellarium since ...
Read more : Conversion of HIP numbers to SAO numbers - help! | Views : 1453 | Replies : 0

Advice on best dew control system please

At last we had a clear night in SW, which offered a great night of viewing - but the tempertaure dropped a lot by midnight and I had non-stop problems with dew. It really hampered the viewing, I had to keep continously gently wipe the eyepiece with soft tissue. I have a large dew shield on the end of the scope (Celestron CPC800) and this seemed to work fine, but the eyepiece was the problem ...
Read more : Advice on best dew control system please | Views : 1360 | Replies : 2

Dark Matter

From my limited understanding of what makes light, it appears that light is both a wave and a particle; if this is so then I would imagine that all these particles of light have a mass. When all this mass of light particles is added together, over a vast amount of time, this must amount to a substantial weight (mass).

Ironically, one of the reasons that light may appear as Dark Matter is because only ...
Read more : Dark Matter | Views : 4670 | Replies : 15

Newbie imaging question

A complete newcomer.
From what I have read in various publications and on the web, the eyepiece supplies the magnification.
What happens when you connect a dslr or ccd web cam direct to the telescope (minus the eyepiece)? Niether the dslr or webcam have len's and the telescope has no eyepiece, so where does the magnification come from? Apologies if this is a stupid question and I have missed something out by the way.
Cheers ...
Read more : Newbie imaging question | Views : 2943 | Replies : 6

8- > 10 or 8 -> 12?

Do you think it is worth going from an 8" to a 10" reflector. I know that going from the 130p to the 200p was an awsome leap in visual terms and im wondering if going fro 200 to 250 would be a similar leap in viual capability.

Or should I go from 8" to 12"?

Read more : 8- > 10 or 8 -> 12? | Views : 2835 | Replies : 9

new telescope

Hello Everyone,

I recently purchased by first scope 2nd hand a skywatcher 1145pm. Now I am rather clueless and the instructions are typical chinese so mean nothing to me and they also apply to more than 1 model.

Im not convinved that the mount dials are setup correctly, in the correct positions.

So currently doing the point and shoot method!

Although I'm yet to see anything but dots!

Any help/advice would be appreciated.
Read more : new telescope | Views : 2158 | Replies : 5

Strange Lights

I looked out of my landing window tonight and i see 3 very bright looking lights in the sky they were in the East. They where kinda Orange in colour and in a line.......has anybody got any idea what they could have been? I couldn't take pictures i have no digi cam,

Read more : Strange Lights | Views : 3998 | Replies : 12


Does a black hole/singularity have an infinite mass/density?....
was thinking that if so , then only one black hole with an infinitely dense singularity(infinite mass) would alone account for all dark matter/energy by itself by nature of this infinite density/mass , never mind all the other black holes that exist supermassive or not..the dark matter/energy that is being speculated upon seems to have a finite figure/quantity even if it is 90 odd percent more than ...
Read more : Mass/Density | Views : 1904 | Replies : 4

Question of size

Most or some magazine articles say that a 6" scope or larger will show a particular deep sky object well.

The problem however is this... is that 6" Refractor or 6" Reflector?
Is there a conversion to step down or up for Refractors as most articles seem to be based on reflector size. Or is it best to take as written the size regardless of telescope type?

Thank you

Read more : Question of size | Views : 1521 | Replies : 2

Dew cap/shield

I wonder if someone could tell me what the best material to make a dew cap for a Skymax 127 would be. Thanks in advance!
Read more : Dew cap/shield | Views : 2578 | Replies : 7


Login  •  Register


Total posts 132232 • Total topics 20320 • Total members 146470