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Old 22-04-2007, 02:15 PM
Dennis
Dazzled by the Cosmos.

Dennis is offline
 
Join Date: May 2005
Location: Brisbane
Posts: 11,820
Hi Monte

I believe the NJP PAS is somewhat different from the EM200 PAS. Like you, I found the EM200 Tak manual somewhat terse and testing to read and understand.

For Brisbane at 152° E, I set the offset on the bottom S scale to +2 as the Time Zone Meridian is 150° for Brisbane.

My EM200 has an N hemisphere PAS reticule.
Month/Days run 1 to 12 Clockwise (CW).
Time runs 00 to 23:59 Counter-Clockwise (CCW).

I wrote an MS Excel spreadsheet that uses the current Computer System Date and converts the S hemisphere Month/Day (CCW) to the equivalent N hemisphere (CW) PAS reticule value.
The same spreadsheet also uses the current Computer System Time and converts that S hemisphere Time (CW) to the equivalent N hemisphere (CCW) PAS reticule value.

So, when I fire up the Notebook and open the spreadsheet, the XLS file runs minimized to just display the red window shown in the attached screen print and I can immediately see what values I need to dial into the PAS reticule. Pressing F9 refreshes the spreadsheet with the current time.

I can e-mail you a copy if you would like to use it. I've attached a couple of screen prints from Starry Night Pro that show the EM200 PAS reticule and Sigma Octans, one with the 4 main stars “joined” in a trapezium and an overlay of the Tak Pas reticule and the star chart.

Cheers

Dennis
Attached Thumbnails
Click for full-size image (Tak Date Time Converter.jpg)
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Click for full-size image (Sigma Octans.jpg)
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Click for full-size image (Sigma Octans Lines.jpg)
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Click for full-size image (Octans Overlay.jpg)
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