Practice will make perfect

[burnout]

So another clearish night for the moon ...moon gives me the chance to learn about some basic settings for the scope and camera ...found out that the px 35c ccd i have will not give sharp focus with my 127mm skywatcher i dont know why ..this image is taken with my samsung nx1100 dslr.

 

[johnfosteruk]

That's a nice start. With the focus do you run out of inward or outward focuser travel - if it's outward you could always get a spacer in there, if it's inward then nothing so simple I'm afraid.

[Ruud]

... if you don't have enough inward travel a barlow may help.

Good luck!

[burnout]

Just now, johnfosteruk said:

That's a nice start. With the focus do you run out of inward or outward focuser travel - if it's outward you could always get a spacer in there, if it's inward then nothing so simple I'm afraid.

 I think its inward as i tried everything and could not get a sharp focus , what i did notice was the image was huge a lot bigger than what my samsung gives 

[burnout]

Just now, Ruud said:

... if you don't have enough inward travel a barlow may help.

Good luck!

tried a x2 barlow same result very poor focus but very close up 

[johnfosteruk]

So a smaller sensor than the DSLR. A barlow will give you focus but will magnify even more, which is great if you want close ups and mosaics, but if you want to capture the full disc in a single frame then not so much fun.

However if you want to do close ups and mosaics etc then a good barlow will be invaluable.

[johnfosteruk]

Posted at the same time

What barlow are you using, not all are made equal and if it's the one shipped with the skywatcher I can attest to it not being very good.

about £40 with postage gets you http://www.telescopehouse.com/revelation-astro-2-5x-barlow-lens.html and it's far superior.

[burnout]

The barlow i have is a celestron omni 2x

 

[johnfosteruk]

As far as I knew, the mighty barlow fixes all focus problems so I'm flummoxed now.

[burnout]

Ye i had read the barlow would help but my dslr is 100 times sharper 

 

[Ruud]

Did you allow the scope to cool down? That will probably take 30 ... 45 minutes.

The larger image scale may be why the CCD is so much blurrier. Image blur from bad atmospheric seeing or heat currents inside the tube will affect the CCD more.

 

[johnfosteruk]

It could also be your focuser, at the DSLR scale slight imperfections in focus aren't as noticeable as they are at the high mag with the CCD and if your focus control isn't fine it's difficult to find the focus point.

[burnout]

Thanks for the replies ,the sky is CLEAR and a crystal clear moon is still nice and high and its only 00:44 .......now wheres that laptop 

[burnout]

So i went back out gave it another go with the CCD i have , here is the result better focus but still really close and the white balance was really hard to control ....and it moves so fast lol

[burnout]