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	<title>Astronomy Log &#187; How To</title>
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	<description>My images and view of the Nights Sky</description>
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		<title>How To Clean the Meade Autostar Handset</title>
		<link>http://www.astronomylog.co.uk/2011/04/28/how-to-clean-the-meade-autostar-handset/</link>
		<comments>http://www.astronomylog.co.uk/2011/04/28/how-to-clean-the-meade-autostar-handset/#comments</comments>
		<pubDate>Thu, 28 Apr 2011 15:20:54 +0000</pubDate>
		<dc:creator>Daniel</dc:creator>
				<category><![CDATA[How To]]></category>
		<category><![CDATA[handset]]></category>
		<category><![CDATA[lx200]]></category>
		<category><![CDATA[meade]]></category>

		<guid isPermaLink="false">http://www.astronomylog.co.uk/?p=18544</guid>
		<description><![CDATA[For ages my Meade Handset on my LX200 GPS telescope has been very unresponsive to key presses. I always find myself having to hammer the keys in order to get the handset to register the key press. But I did not want to buy a new Meade handset as they are so expensive, so I [...]


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			<content:encoded><![CDATA[<p>For ages my Meade Handset on my LX200 GPS telescope has been very unresponsive to key presses. I always find myself having to hammer the keys in order to get the handset to register the key press.</p>
<p>But I did not want to buy a new Meade handset as they are so expensive, so I was glad to find some details on the internet on how to clean the handset.</p>
<p>All you need to do this is some cotton wool buds and some alcohol. </p>
<p>Begin by unscrewing the 4 screws on the back of the handset, then remove the rear plastic case cover which contains the red light plastic cover.</p>
<p><a href="http://www.astronomylog.co.uk/wp-content/uploads/Meade-Clean-1-13-03-2011-11-42.png"><img src="http://www.astronomylog.co.uk/wp-content/uploads/Meade-Clean-1-13-03-2011-11-42-300x168.png" alt="Opening the Meade Handset" title="Opening the Meade Handset" width="300" height="168" class="left" /></a>You will how find that the front of the handset and the main motherboard are joined by a ribbon type cable, so be careful not to stress this cable as the cable is not that long.</p>
<p>I then began by dipping my cotton bud into the alcohol and gently rubbing each of the contacts in turn and then using another cotton wool bud in order to dry and further clean the contact.</p>
<p><a href="http://www.astronomylog.co.uk/wp-content/uploads/Meade-Clean-2-13-03-2011-11-41.png"><img src="http://www.astronomylog.co.uk/wp-content/uploads/Meade-Clean-2-13-03-2011-11-41-300x168.png" alt="Meade Inside Handset Controller" title="Meade Inside Handset Controller" width="300" height="168" class="left" /></a>There are quite a few contacts to clean, so you may find yourself using quite a few cotton buds, but you should visibly see the dirt on the cotton wool buds.</p>
<p>After doing all the contacts on the main board, I then cleaned the black rubbery dots on the back of the keys using the same method.</p>
<p><a href="http://www.astronomylog.co.uk/wp-content/uploads/Meade-Clean-3-13-03-2011-11-40.png"><img src="http://www.astronomylog.co.uk/wp-content/uploads/Meade-Clean-3-13-03-2011-11-40-300x168.png" alt="Cotton Buds after cleaning the Meade Handset" title="Cotton Buds after cleaning the Meade Handset" width="300" height="168" class="left" /></a>After finishing I then put everything back together and made sure that the ribbon cable does not get put in front of the main lcd screen, as otherwise you will see the ribbon cable in the window and some of your wording on the handset will look strange. I did this first and then noticed it when I attached the handset to the telescope and turned it on. I then took the handset apart and repositioned the ribbon cable.</p>
<p>Once I tried the handset with the LX200 I was then amazed at how responsive the keys then were. This is definitely a quick and simple little job to undertake if your Meade handset keys are also not working so well. </p>
<p>I also recorded a video on what I did to clean the Meade handset, and it can be found below:</p>
<p><iframe title="YouTube video player" width="500" height="320" src="http://www.youtube.com/embed/Cqma6SMZ560?rel=0" frameborder="0" allowfullscreen></iframe></p>


<p>Related posts:<ol><li><a href='http://www.astronomylog.co.uk/2011/10/04/meade-04549-my-sky-cable-by-meade-1023086/' rel='bookmark' title='Permanent Link: Meade 04549 My Sky Cable by Meade'>Meade 04549 My Sky Cable by Meade</a></li><li><a href='http://www.astronomylog.co.uk/2007/10/14/how-to-connect-lx200-to-a-pc/' rel='bookmark' title='Permanent Link: How To Connect an LX200 Telescope to a PC'>How To Connect an LX200 Telescope to a PC</a></li><li><a href='http://www.astronomylog.co.uk/2011/10/04/meade-610-dew-shield-for-10-inch-lx200-schmidt-cassegrain-telescopes-by-meade-13503/' rel='bookmark' title='Permanent Link: Meade #610 Dew Shield For 10 Inch Lx200 Schmidt-cassegrain Telescopes by Meade'>Meade #610 Dew Shield For 10 Inch Lx200 Schmidt-cassegrain Telescopes by Meade</a></li><li><a href='http://www.astronomylog.co.uk/2011/10/04/meade-506-astrofinder-and-cable-connector-kit-by-meade-13438/' rel='bookmark' title='Permanent Link: Meade #506 Astrofinder And Cable Connector Kit by Meade'>Meade #506 Astrofinder And Cable Connector Kit by Meade</a></li><li><a href='http://www.astronomylog.co.uk/2008/02/13/moon-images-via-meade-dsi-pro/' rel='bookmark' title='Permanent Link: Moon Images via Meade DSI Pro'>Moon Images via Meade DSI Pro</a></li></ol></p>]]></content:encoded>
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		<title>How To Make a Diffraction Spike Mask</title>
		<link>http://www.astronomylog.co.uk/2009/10/04/how-to-make-a-diffraction-spike-mask/</link>
		<comments>http://www.astronomylog.co.uk/2009/10/04/how-to-make-a-diffraction-spike-mask/#comments</comments>
		<pubDate>Sun, 04 Oct 2009 16:57:04 +0000</pubDate>
		<dc:creator>Daniel</dc:creator>
				<category><![CDATA[How To]]></category>
		<category><![CDATA[diffraction mask]]></category>
		<category><![CDATA[lx200]]></category>
		<category><![CDATA[make]]></category>
		<category><![CDATA[pleaides]]></category>
		<category><![CDATA[plywood]]></category>
		<category><![CDATA[spike]]></category>
		<category><![CDATA[stars]]></category>

		<guid isPermaLink="false">http://www.astronomylog.co.uk/?p=604</guid>
		<description><![CDATA[I have seen these pleasing images where the stars have spikes coming out of them, most notably on the pleiades (seven sisters) images. I want to be able to get these in my images as well, and now I have found out how to get them by using a diffraction mask on my LX200. Today [...]


Related posts:<ol><li><a href='http://www.astronomylog.co.uk/2009/10/11/how-to-make-a-wooden-camera-mount/' rel='bookmark' title='Permanent Link: How To Make a Wooden Camera Mount'>How To Make a Wooden Camera Mount</a></li><li><a href='http://www.astronomylog.co.uk/2009/07/14/adding-plywood-boards-to-observatory-shed/' rel='bookmark' title='Permanent Link: Adding Plywood Boards to Observatory Shed'>Adding Plywood Boards to Observatory Shed</a></li><li><a href='http://www.astronomylog.co.uk/2009/06/05/observatory-build-drilling-the-pier-holes/' rel='bookmark' title='Permanent Link: Observatory Build &#8211; Drilling The Pier Holes'>Observatory Build &#8211; Drilling The Pier Holes</a></li><li><a href='http://www.astronomylog.co.uk/2008/01/06/observing-the-sun-with-the-lx200/' rel='bookmark' title='Permanent Link: Observing the Sun with the LX200'>Observing the Sun with the LX200</a></li><li><a href='http://www.astronomylog.co.uk/2009/08/28/observatory-finishing-touches/' rel='bookmark' title='Permanent Link: Observatory Finishing Touches'>Observatory Finishing Touches</a></li></ol>]]></description>
			<content:encoded><![CDATA[<p>I have seen these pleasing images where the stars have spikes coming out of them, most notably on the pleiades (seven sisters) images.</p>
<p>I want to be able to get these in my images as well, and now I have found out how to get them by using a diffraction mask on my LX200.</p>
<p>Today I decided to make some by using some plywood left over from my observatory build.</p>
<p>Here is a list of the raw materials I used:</p>
<ol>
<li>Plywood</li>
<li>8x Screws</li>
<li>Spare length of wood (24&#8243;)</li>
<li>2ft Washing Line</li>
<li>Black Wood Paint (optional)</li>
</ol>
<p><a class="left" href="http://www.astronomylog.co.uk/wp-content/uploads/cutting-out-the-wrong-size-mask.jpg"><img class="alignnone size-thumbnail wp-image-606" title="Cutting out the wrong size mask" src="http://www.astronomylog.co.uk/wp-content/uploads/cutting-out-the-wrong-size-mask-150x150.jpg" alt="Cutting out the wrong size mask" width="150" height="150" /></a><a class="left" href="http://www.astronomylog.co.uk/wp-content/uploads/cutting-the-right-size-mask.jpg"><img src="http://www.astronomylog.co.uk/wp-content/uploads/cutting-the-right-size-mask-150x150.jpg" alt="Cutting the right size mask" title="Cutting the right size mask" width="150" height="150" class="alignnone size-thumbnail wp-image-607" /></a>I began by taking the LX200 telescope metal cover and drawing a circle around that thinking that would be just right, although after then cutting it out with a jigsaw I found out that it was far too big.</p>
<p>So I went back and just measured the diameter of the telescope and then found an old style school compass to draw the circle on the wood.</p>
<p>I then cut out the circle using my electric jigsaw.</p>
<p>I then cut down the piece of plywood into one manageable piece, with about 1.5 inches to spare around the sides of the hole.</p>
<p><a class="left" href="http://www.astronomylog.co.uk/wp-content/uploads/adding-all-side-wood.jpg"><img class="alignnone size-thumbnail wp-image-610" title="Adding all side wood" src="http://www.astronomylog.co.uk/wp-content/uploads/adding-all-side-wood-150x150.jpg" alt="Adding all side wood" width="150" height="150" /></a>Next I cut four lengths of some rough timber I had spare which was used on a previous gardening job. You don&#8217;t have to add this part, but I did because I wanted the mask to sit back from the front of the telescope, plus these pieces of wood at every side allowed me to make the mask fit snugly around the scope.</p>
<p>I then screwed the pieces of wood with 2 screws on each of the 4 pieces of wood, although I only used 1 screw on 2 pieces of wood so that I could still move the pieces of wood once the mask was on the telescope to fit them even more snugly against the scope.</p>
<p>Now go back to the telescope and place the mask on the front and mark on the blocks of wood you have just attached to the mask where the screws are on the LX200. You should have a screw in each of the four corners of the cover that holds the main front glass in place on the front of the telescope.</p>
<p>Doing this will mean that your washing line crosshairs will be exactly in the centre on the mask.</p>
<p><a class="left" href="http://www.astronomylog.co.uk/wp-content/uploads/adding-washing-line-crosshairs.jpg"><img class="alignnone size-thumbnail wp-image-612" title="Adding washing line crosshairs" src="http://www.astronomylog.co.uk/wp-content/uploads/adding-washing-line-crosshairs-150x150.jpg" alt="Adding washing line crosshairs" width="150" height="150" /></a>I then cut 2 feet of washing line from our main home washing line, although you could go out and buy this. I then cut the 2 foot piece into 2 x 1ft pieces.  I tied a knot at one end of each pieces of the washing line.</p>
<p>Now drill holes with an electric drill all the way through the blocks of woods at the location you previously placed your telescope screw marks.</p>
<p>Thread the washing line through one of the holes. To hold the other end of the washing line in place I could have used wing nuts or bolts, but I did not have any, so I used a piece of dowelling, and hammered this into the holes to hold the washing line in place.</p>
<p><a class="left" href="http://www.astronomylog.co.uk/wp-content/uploads/diffraction-spike-mask-completed-unpainted.jpg"><img class="alignnone size-thumbnail wp-image-608" title="Diffraction spike mask completed unpainted" src="http://www.astronomylog.co.uk/wp-content/uploads/diffraction-spike-mask-completed-unpainted-150x150.jpg" alt="Diffraction spike mask completed unpainted" width="150" height="150" /></a><a class="left" href="http://www.astronomylog.co.uk/wp-content/uploads/diffraction-spike-mask-on-lx200.jpg"><img class="alignnone size-thumbnail wp-image-609" title="Diffraction spike mask on lx200" src="http://www.astronomylog.co.uk/wp-content/uploads/diffraction-spike-mask-on-lx200-150x150.jpg" alt="Diffraction spike mask on lx200" width="150" height="150" /></a>I then tried the mask on the LX200 to make sure the washing line crosshairs were exactly centered. </p>
<p>On my first attempt they were not so I had to re-drill some more holes and re-thread the washing line, then they were perfect.</p>
<p>Here is the unpainted mask on my 10&#8243; LX200 telescope.</p>
<p>I then painted the mask by using some black wood paint from <a href="http://shop.wilkinsonplus.com/x/?x=c&amp;z=s&amp;v=857802&amp;k=astro"  class="alinks_links" onclick="return alinks_click(this);" title=""  style="padding-right: 13px; background: url(http://www.astronomylog.co.uk/wp-content/plugins/alinks/images/external.png) center right no-repeat;" rel="external">Wilkinsons</a>. </p>
<p>Hopefully I will now get the chance to try the diffraction spike mask out and see what images I get.</p>


<p>Related posts:<ol><li><a href='http://www.astronomylog.co.uk/2009/10/11/how-to-make-a-wooden-camera-mount/' rel='bookmark' title='Permanent Link: How To Make a Wooden Camera Mount'>How To Make a Wooden Camera Mount</a></li><li><a href='http://www.astronomylog.co.uk/2009/07/14/adding-plywood-boards-to-observatory-shed/' rel='bookmark' title='Permanent Link: Adding Plywood Boards to Observatory Shed'>Adding Plywood Boards to Observatory Shed</a></li><li><a href='http://www.astronomylog.co.uk/2009/06/05/observatory-build-drilling-the-pier-holes/' rel='bookmark' title='Permanent Link: Observatory Build &#8211; Drilling The Pier Holes'>Observatory Build &#8211; Drilling The Pier Holes</a></li><li><a href='http://www.astronomylog.co.uk/2008/01/06/observing-the-sun-with-the-lx200/' rel='bookmark' title='Permanent Link: Observing the Sun with the LX200'>Observing the Sun with the LX200</a></li><li><a href='http://www.astronomylog.co.uk/2009/08/28/observatory-finishing-touches/' rel='bookmark' title='Permanent Link: Observatory Finishing Touches'>Observatory Finishing Touches</a></li></ol></p>]]></content:encoded>
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