[Darren (Darren Miller)]

Hi All, Firstly I would just like to say Thank You for a Great site and info!
I have been quietly watching and researching for a while now and have a question or two and some images to share and I hope to encourage others as I have been encouraged - on so many levels - so please excuse the long post as I really want all new astronomers to know what can be achieved quite easily and cheaply.
Using this site and others I found lists of Webcams suitable for Astrophotography and, so far, I have purchased a 3COM Homeconnect USB Webcam and a Logitech Quickcam Pro 4000 Webcam - both off Ebay for less than $40 Total - a Mogg adapter ($41 Delivered) and a GSO IR Blocking Filter($19).
I made my first attempts at Astrophotography Monday night.
I am using the following equipment -
Guan Sheng Optical (GSO) GS-600 8" F/4 Newtonian with its stock Crayford style focusser
I found I could not focus either camera when placed directly into the eyepiece holder, but when I added a GSO 2x Barlow I could get the Webcams to focus OK.
Q#1 - Does this mean I can not achieve enough IN focus without the barlow lens and should look at getting a Low Profile focusser for imaging?
Q#2 - If I do get a Low Profile focusser, will I still be able to focus my eyepieces or will I need an Extension Tube for visual observing?
Q#3 - Is the Chromatic Abberation in the shot of Jupiter due to using a Achromatic Barlow instead of an ED or Apochromatic version or some other problem in the optical system?
The focus is off in my images, so I know a 10 to 1 or better Crayford Micro focusser is definately needed.
I have included as attatchments what I think is best image I got of the Moon (still not perfectly focussed), a poor to average shot of Jupiter (Chromatic Abberation),a photo of my complete setup and a direct comparison between the 3COM and Logitech Webcams on a terrestrial object.
I am too new to astronomy to be able to comment on 'Seeing' etc. and the images are simply single frames, no stacking, editing or anything, purely raw images.
Thank you for your time and advice.
Kind Regards,
Darren
PS - The entire setup - so far - less the PC has come in at under $1500!
Collimation may be off - I'm NOT confident collimating yet unfortunately