LtE in CMO #276

From Donald C PARKER

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® . . . . . . . . Date: Fri, 01 Aug 2003 04:29:50 +0000

Subject: Mars Images

Hi All,

Here are some Mars images from 31 July. Dust in Chryse remains.

Best,

NOTE:

MARS IMAGES 31 July, 2003

D.C. Parker, Coral Gables, FL. 16-in (41cm) Newtonian

ST9XE CCD Camera Eyepiece Projection @ f/55.4

Integration Times:

RED (RG610 Red Filter, 610-1100nm: NO IR Rejection) 0.13s 1 image

GREEN (CFW8C, 531nm central; BWHM 86nm) 0.29s 8-10 images

BLUE (CFW8C, 450nm central, BWHM 116nm) 1.00s 7-9 images

Images bias, flat and dark corrected.

Seeing fair (5-7 Pickering). Transparency 4-4.5 m. No wind. Light dew. Altitude =49-43 degrees.

Dust clouds in Chryse remain, clouds now in Eos and Margaritifer Sinus. Possible dust in Aram. Dust bright in green as well as red light. Dust clouds formed since 30 July also bright in blue. Novus Mons separating from SPC. Argenteus Mons remains brilliant. Violet Clearing = 1+

® . . . . . . . .Date: Fri, 01 Aug 2003 18:32:38 +0000

Subject: RE:Mars Images

Dear Masatsugu,

Thanks you for the kind e-mail. ….. I was on the Florida Keys until yesterday and was not on e-mail. Tom Dobbins called me and told me of your achievement. I think Saheki would be very proud to know what his observations have started!

Unfortunately I have to leave for Ohio Sunday to run the ALPO meeting and visit Dobbins, so I will miss a week of imaging. I hope you keep the dust away until I return! I will have the opportunity to meet Eric Ng, Tan Wei Leong, and Ed Grafton, so it should be fun. I am only sorry that you are not able to join us -- perhaps next year??

All for now.

Best,

® . . . . . . . .Date: Fri, 01 Aug 2003 18:47:44 +0000

Subject: Mars Images (taken on 26 July, 27 July, 28 July, 29 July 2003)

Hi All,

Here are some .JPG images taken between seafood and pina coladas on the Keys. I used a 10-inch Mewlon Dall-Kirkham, Paramount ME, and a ToUCam, eyepiece projection. The differences in color occurred when I started using an IR rejection filter. This provided somewhat better, more realistic color balance -- Mars looks more yellow than red through the eyepiece. I also used an Adirondack PADC-1 variable prism to reduce prismatic dispersion. The thing actually works!

Best,

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Don PARKER (Miami, FL, USA)

park3232@bellsouth.net

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