<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta content="text/html; charset=unicode" http-equiv="Content-Type" /> <title>po0filter</title> <style type="text/css"> .auto-style1 { font-family: Verdana, Geneva, Tahoma, sans-serif; font-size: medium; } .auto-style4 { font-family: Verdana, Geneva, Tahoma, sans-serif; font-size: x-large; } a { color: #00FFFF; } a:visited { color: #00FFFF; } a:active { color: #00FFFF; } a:hover { color: #00FFFF; } .auto-style5 { font-family: 0000; font-size: x-large; color: #FFFF00; } .auto-style6 { font-family: 0000; font-size: medium; } .auto-style7 { font-family: 0000; } .auto-style8 { font-family: 0000; font-size: large; } </style> </head> <body style="color: #FFFFFF; background-color: #008000; background-image: url('haikeigreen.jpg')"> <p class="auto-style4">&nbsp;</p> <p class="auto-style8"><a href="http://sr1000.syuriken.jp/">top</a></p> <p class="auto-style6">&nbsp;</p> <p class="auto-style5">PO0 Filter</p> <p class="auto-style6"><img alt="" height="215" src="PO0a.jpg" width="600" /></p> <p class="auto-style6"><img alt="" height="231" src="PO0b.jpg" width="324" /></p> <p class="auto-style6">&nbsp;</p> <p class="auto-style6">PO0 filter absorbs wave length which causes chromatic aberration.</p> <p class="auto-style6">&nbsp;</p> <p class="auto-style6">I tested PO0 filter with <a href="http://sr1000.syuriken.jp/102m.html">an achromat refractor telescope</a>.</p> <p class="auto-style6">D=102mm, FL=1000mm, + Kenko MC7 telecon</p> <p class="auto-style6">Panasonic G5</p> <p class="auto-style6"><img alt="" height="440" src="PO0c.jpg" width="600" /></p> <p class="auto-style6">Violet fringe appears.</p> <p class="auto-style6">&nbsp;</p> <p class="auto-style6"><img alt="" height="477" src="PO0d.jpg" width="777" /></p> <p class="auto-style6">Violet fringe appears.</p> <p class="auto-style6">&nbsp;</p> <p class="auto-style6"><img alt="" height="477" src="PO0e.jpg" width="777" /></p> <p class="auto-style6">Violet fringe disappears by PO0.</p> <p class="auto-style6">&nbsp;</p> <p class="auto-style1"> <img alt="" height="477" src="PO0f.jpg" width="777" class="auto-style7" /><span class="auto-style7">&nbsp;</span></p> <p class="auto-style6">Auto white balance setting of digital camera compensate green-yellow color of PO0 filter.&nbsp;</p> <p class="auto-style6">&nbsp;</p> <p class="auto-style6">&nbsp;</p> <p class="auto-style6"><img alt="" height="461" src="PO0g.jpg" width="962" /></p> <p class="auto-style6">&nbsp;PO0 filter&nbsp;,auto white balance setting</p> <p class="auto-style6">&nbsp;</p> <p class="auto-style6">&nbsp;</p> </body> </html>