Hi, I am new to the whole imaging process so please forgive me if this is a lame question. I have an LPI which I am struggling to focus on my ETX90, I can get a good clear image with a 26mm Plossl and can do the same with a 9mm. When I view Jupiter through the LPI all I get is a blurry bright ball and I can just make out 3 or 4 blobs which relate to the moons. Is this a failing of the ETX90EC I have or is the LPI faulty or am I faulty.

Thanks in advance Auger

Hi, Auger

Most likely you are over-exposing (very common problem when first starting out). Try reducing the exposure time...it will need to become very short, just a small small fraction of a second.

I have imaged jupiter with an ETX-90 & LPI (some years back now ;-) so I know for sure you can do it. These instructions, while written for the DSI, should translate very easily to the LPI:
http://autostarsuite.net/forums/thread/5339.aspx

And you may find these tips useful as well:
http://autostarsuite.net/forums/thread/5349.aspx

Don't give up!

Chuck

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Chuck Reese
CDIP Certified: Nebula, Galaxy, Solar System, Stars & Clusters Imager
CDIP Mentor: Nebulae & Solar System Categories
For information on the Certified DSI Imager Program, see:
http://autostarsuite.net/forums/1427/ShowForum.aspx

Chuck
Many thanks I will give it a try much appreciated

Regards Auger

Chuck Hi

By the way did you know the following link is broken http://mywebpages.comcast.net/mwconte/focus.htm

Regards auger

Didn't know that...but I don't recognize the link. Where did you get it?

Chuck

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Chuck Reese
CDIP Certified: Nebula, Galaxy, Solar System, Stars & Clusters Imager
CDIP Mentor: Nebulae & Solar System Categories
For information on the Certified DSI Imager Program, see:
http://autostarsuite.net/forums/1427/ShowForum.aspx

Chuck Hi

It is one of the references in your article http://autostarsuite.net/forums/thread/5349.aspx.

Regards Simon

Thank you, that's fixed...here it is for you:

http://astronomy.qteaser.com/diffspike.html

Chuck

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Chuck Reese
CDIP Certified: Nebula, Galaxy, Solar System, Stars & Clusters Imager
CDIP Mentor: Nebulae & Solar System Categories
For information on the Certified DSI Imager Program, see:
http://autostarsuite.net/forums/1427/ShowForum.aspx

Chuck many thanks for your help and advice, I managed at the weekend to get some images of Jupiter which I then processed through K3CCD and was pleased with the results. Although out of focus on about 8 of the 15 the post processed image looked fairly good. More practice required and I now have a powered focuser so no more shake as I try and focus.

Regards Simon