cannot focus

[hszsky]

hi i'm new to astronomy

i bought a 4mm plossl eyepiece for my little newtonian reflector, but i don't think the focuser goes down enough to get a clear focus on this 4mm eyepiece. is there anything i can do?

thanks in advance for any help

[erick]

Please tell us a little more about your reflector - make, model, aperture, focal length?

I would suspect that a 4mm plossl is pushing the scope beyond its limits to produce an acceptable image? I found that a 6mm plossl was too much for an 8" reflector - as well as the eye relief being way too small.

Are you clearly not getting down to the smallest image? Or are you going through the smallest image but its still a fuzzy blob at that point?

[lacad01]

What's your target? Have you tried other eye pieces as well as checked collimation ? Probably good to start with a lower power eye piece first and take it from there.

[hszsky]

hi thanks

its the celestron firstscope, so 76mm aperture, 300 fl. because it came with a 4mm eyepiece, i thought i'd get a 4mm plossl to increase the quality of image. i can get a very clear image at building close by when i looked outside, but anything further away its blurry as the focuser on the telescope don't quite go down enough. the eyepiece the scope came with i can focus on distance object, but quality wasn't too good

[erick]

hszsky

Better take a deep breath then read this thread.

http://www.iceinspace.com.au/forum/showthread.php?t=48171

Eric :sadeyes:

[bmitchell82]

its almost like putting down a loved pet :(:sadeyes:

[hszsky]

well, reviews don't sound very positive, atleast it got me into astronomy now, so it has done its job. I will get a better scope once i have enough money saved up.

[torana68]

if you have time you can drop around here and play with the 4.5 Reflector I have in the back yard, total cost was under $150 second hand,you dont have to spend a fortune to have fun, or join the local club!
Roger

[hszsky]

oh is there few clubs in canberra?

[torana68]

http://msowww.anu.edu.au/cas/

Roger