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Last updated: 26 November 2011

This page discusses using the Meade Lunar Planetary Imager with Mac OS X. Contributions welcome.

[26 November 2011]
Mike here: As a cloudy day project, I installed a Sonix driver for my old LPI per the instructions provided by Stephen Wangner below on my MacBook Pro with Mac OS X 10.7.2 (Lion). See my Cassiopeia Observatory report for 23 November 2011 to see how it went.

End of today's update

Subject:	Meade LPI with Mac OSX 10.6.4 (Snow Leopard)
Sent:	Tuesday, September 7, 2010 12:58:49
From:	Stephen T. Wangner (
Last week while cleaning out my storage room, I came across the box
containing an old Meade LPI that I had purchased a few years back.

After MUCH research out there on the net and even more experimentation,
I was able to get the LPI working on my MacBook Pro running OSX 10.6.4
in two different ways:

Using my original AutoStar Suite installation CD, I was able to fully
install the software and drivers in a VMWare Fusion virtual machine
running WinXP.

Since this is my option of last resort (I much prefer to have Mac-native
solutions), I did even more research and experimentation and found that:

The Sonix SN9C102 (not SN9C102p) driver (available as a download from
the Sonix site, and I also kept a copy) properly installs and functions
in OSX 10.6.4.

After installing the SN9C102 driver, I was able to use the LPI
Mac-native through Keith's AstroImager.

I just finished the installation and testing today, so I don't have any
astronomical images yet.  If the weather holds up here in NY, I might be
able to get some tonight or tomorrow night.  Jupiter's beautiful right
now and is at opposition on the 21st (I believe it's the 21st) so that's
going to be my first target.

The driver is available at:,2

You can also get there by: 

1. go to
2. in the "Select Product Family" drop-down, choose "Video/Image Controllers"
3. in the "Select Product Series" drop-down, choose "PC-CAM Controller"
4. in the "Select Product" drop-down, choose "SN9C102 (Phase out)"
5. in the second column, check the checkbox next to "Drivers"
6. in the third column, click on the "Submit Search" button.
7. when the search returns, click on the Chinese characters next to "
SN9C101/102_v1.00_MacOSX (805KB)".  The file may want to initially save
with no file extension.  If it does, add ".zip" (it's a zip file in

If you have any questions, etc. please don't hesitate to ask.  It works
for me and it should be a repeatable thing.

P.S.  I am also a big fan of Crossover - I did try it, and it did
install and run the AutoStar software, but it appears that it won't see
the LPI correctly.  But with being able to get it working Mac-native,
that became a non-issue.
Mike here: I hope to give this driver a try soon with my LPI on my MacBook Pro.

End of 8 September 2010 update

[23 Nov 09]
Mike here: I tried to use my old Meade LPI with my MacBook Pro. I had used it back in 2004 on my Mac (via Virtual PC; In 2005 I installed the native Mac OS X driver from the Sonix web site ( (discussed further down this page). It was the SN9C102p Series WebCam Driver OSX 1.01.0004. However, when I tried to install the driver under Mac OS 10.6.2 (Snow Leopard), the installer said the installation failed. Keith's AstroImager ( could not see the LPI. I tried using Meade's AutoStar Suite v5.5 (full version) in Parallels Desktop 4 (Windows XP). When I selected the LPI I would get an error message in Windows that said I needed to install some proper version of .Net but it did not tell where to get that or what version I needed. So much for trying to use the LPI.

End of 23 November 2009 update

Subject:	Meade LPI, a Mac and Mars
Sent:	Tuesday, November 1, 2005 07:16:24
From:	Tom Mordasky (
So yesterday I picked up the Meade LPI to connect to my ETX90. I had
been using my Canon Powershot A80 with a homemade adaptor but the
results were mediocre at best. I connected the LPI to my iBook g4 using
the Sonix driver discussed on your site and here:

Some people have had trouble downloading this software, claiming the
site requires a password. It seems strange but when I went to the link
in the Firefox browser I could not download the driver without a
password, but in Apple's Safari it downloaded fine??? Who knows why...

Connection was easy and I was imaging Mars in no time. Of course I have
no idea what settings to use with the Sonix software but "Default"
seemed a good place to start. Attached you will find my first composite
shot of Mars taken with the ETX90, The Meade LPI and a 2x Barlow for a
whopping 400x magnification! 300 of 350 images stacked in Lynkeos.


Next I want to A: figure out the camera settings and B: see if there is
any way to use it via Eyepiece projection to widen its field of view.
Mike here: Eyepiece projection will be difficult (no lens on the LPI) but you can use a Barlow Lens with it.


Further working with the stack I managed to get this shot...


This is my best 100 or so out of 750 Not bad.

End of 4 November 2005 update

Subject:	LPI Mac OS X driver
Sent:	Thursday, September 29, 2005 11:48:08
From:	Lyle Scheer (
I've been looking at the following page on your web site:

It makes me want to try this, but it looks like sonix has removed the
os9/mac os x driver from *their* website.  I don't suppose you have a
copy of the driver floating around and can email it to me?

- - Lyle Scheer
Mike here: I presume it is still there; you just need to register an account with their site.

Subject:	Meade DSI with Mac Software
Sent:	Thursday, August 25, 2005 23:50:13
From:	Joerg Mueller (
I live in Germany, use an ETX 125, one LX 200 GPS and a Meade LPI. On
your ETX sites I found software for an Apple PowerBook, Mac OS X. The
driver for the LPI camera works fine.

I know that you have a Meade LPI and not a DSI.

But do you know now if there is a Mac Software for the DSI.

Thank you for ansering

Best wishes, clear sky   Joerg
Mike here: I haven't heard of one yet but I seem to recall someone was working on an open source driver for Mac OS X.

End of 3 October 2005 update

Subject:	lpi first light
Sent:	Tuesday, January 25, 2005 18:58:38
From:	Tom Mesquitta (
About an hour and a half ago, i accessed your website, and saw your new
post regarding the lpi on a Mac.

This was really strange, as i emailed you a few days ago, having had
problems with autostar not recognising the lpi, then a few days later,
this god send was posted.

Even though it was nearly 1:30 am over here in England, i couldn't
resist going outside and trying it out on my ETX-125. The seeing
conditions were quite poor with cloud obstructing then clearing the view
of the telescope every few minutes, and as i had not planned to go out,
i couldnt really drive half hour to my nearest (slightly darker) area,
so i had to settle for the back garden.

Nevertheless, i managed to take my first three astrophotos! (jupiter
with satellites, saturn and the moon).

Anyway i better get to bed now as ive got a university lecture in a few


Oh p.s is there anyway to adjust the exposure times of the lpi with this
driver, or is it just movies that its able to do?

Mike here: As I noted on the writeup below, the driver monitor application has a video setting where you can adjust the exposure.

End of 27 January 2005 update

Subject:	LPI driver for mac
Sent:	Sunday, January 23, 2005 09:40:54
From:	Rodolphe Pineau (
I found that while looking for something else on the net.
It gives a link to a driver that allow the LPI to work on Mac OS X and

Link to the thread :

Link to the driver page :



|        Rodolphe Pineau    RTI-Zone        |
|          |
| Coldfire Robot / Unix / Atari / Astronomy |

Mike here: I had to try this out. I downloaded the LPI driver and installed it on a PowerBook G4/500 (TiBook). I also installed Keith's AstroImager software even though the driver software comes with an imager application. I then downloaded and installed Lynkeos, which is a nice stacking application for OS X.

Here is a quick report on using the LPI and the stacking software in Mac OS X.

I placed the LPI on my ETX-70, connected the LPI to the TiBook, and fired up the driver's "monitor" application. It lets you set some basic video settings and record what the LPI "sees" to a QuickTime movie file. Using this software I verified that the LPI and Macintosh were communicating. Here is a still frame from that movie:

Moon LPI Mac OSX

I had to manually adjust the exposure setting to avoid overexposing the Moon.

I then did a similar capture using Keith's AstroImager application, which is a more full-featured imager. It auto-adjusts the levels (and exposure) so I didn't have to do anything but start recording the image from the LPI to a QuickTime movie. The results were very similar to the driver "monitor" QuickTime file but I suspect that AstroImager will do better on most other objects.

I had previously tried Keith's Imager Stacker software but I could never understand some part of making it work. But I found that Lynkeos is much more automated and intuitive. You import your LPI QuickTime file and it can align the frames, measure the "image quality", and throw out frames that are below a user-specified quality level. You can include a "dark frame" and a "flat field" frame if you have them but they are optional. You then tell it to stack the images. You can then do some straightforward image processing if needed (levels, sharpening). Here is a screen shot showing the window. Each frame of the movie file is listed automated on the left. You can manually reject bad frames by clicking the checkbox although in my brief test the automatic quality measurements seemed very accurate (at least for the Moon).


It is a pretty simple application to use but I do recommend reading the short Help menu item. I only had one minor problem when doing the stacking: you have to set a crop region but when I would drag the crop rectangle area I would get distorted resulted. It was only by manually setting to a full frame 320x240 would I get a non-distorted image. Here's the result:


Bottom line if you have Mac OS X and a Meade LPI: get the driver, AstroImager, and Lynkeos.

I will do more work with these once the skies clear up again and report back here.

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