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Imaging with a Meade LPI imager


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#1 Lowestoft1

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Posted 22 January 2014 - 03:35 PM

Hi people

I'm very new to this astro imaging lark, and have purchased a Meade LPI imager.

It's great for planets and such, but when it comes to the moon I can only get part of the sphere.

Is there a way to reduce the image size to fit the whole frame?

Regards

Jim S


#2 gspie

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Posted 22 January 2014 - 05:32 PM

Not really -- getting the whole moon to fit on the chip is not always possible. What you can do is do a Mosaic -- several overlapping images, that you knit together with your image processing software. Here is an example of a knitted together moon -- the original images are top-half / bottom half.

http://home.comcast....saic-040803.jpg

Make sue your overlap area is big enough to recognize where they should meet up...
Based on your scope, you may have to use 2 to 4 images to do it -- the LPI isn't a very big chip
LX850 with 10" ACF OTA and Takahashi FS 60C OTA -- SBIG STT-8300M CCD with FW8G-STT Self Guiding Filter Wheel and SBIG AO-8 Adaptive Optics -- Camera Control and Image Calibration with Maxim DL/CCD Pro, Image processing with PixInsight, and final composition with Photoshop CS5

http://home.comcast....ie/astroweb.htm

#3 Lowestoft1

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Posted 22 January 2014 - 07:10 PM

Nice image, but is that the only solution? I've heard of extension tubes, would they do the trick? Rather get advice before spending hard earned pension money.... :-)

#4 gspie

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Posted 22 January 2014 - 08:44 PM

An extension tube would only make it worse. You would need some sort of focal reducer - not sure what scope you have, or it's' focal ratio.
An extension tube would only increase your F-ratio, giving you an even smaller Field Of View.
LX850 with 10" ACF OTA and Takahashi FS 60C OTA -- SBIG STT-8300M CCD with FW8G-STT Self Guiding Filter Wheel and SBIG AO-8 Adaptive Optics -- Camera Control and Image Calibration with Maxim DL/CCD Pro, Image processing with PixInsight, and final composition with Photoshop CS5

http://home.comcast....ie/astroweb.htm

#5 gspie

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Posted 22 January 2014 - 09:06 PM

And as for costs, doing a Mosaic doesn't require any hardware, just software that allows you to merge the images to make a single image.
LX850 with 10" ACF OTA and Takahashi FS 60C OTA -- SBIG STT-8300M CCD with FW8G-STT Self Guiding Filter Wheel and SBIG AO-8 Adaptive Optics -- Camera Control and Image Calibration with Maxim DL/CCD Pro, Image processing with PixInsight, and final composition with Photoshop CS5

http://home.comcast....ie/astroweb.htm

#6 Lowestoft1

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Posted 23 January 2014 - 01:11 AM

Thanks again.... See that's what I mean.... Advice that has saved me money instead of jumping straight in.

Many thanks again....

Scope is a Meade 14" LX200 ACF ( GPS ) on a static mount with wedge, housed in a home built observatory ( pod )




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