LtE in CMO #251

From Donald C PARKER

@. . . . . . Here are some Mars images taken in poor conditions on 24 August. Best,

(25 August 2001 email)

>MARS IMAGES 24 AUGUST, 2001

>D.C. Parker, Coral Gables, FL.  Lynxx PC camera  16-in (41cm) F/6 NEWTONIAN

>            Eyepiece Projection @ f/44.2

>            Integration Times:

>    BLUE (Koheisha, 445nm peak central; BWHM 105nm)   2.40s

>    GREEN (Koheisha, 540nm peak central; BWHM 75nm)   0.72s

>    RED (RG610 - No IR Rejection)                      0.16s

>                    Images flat and dark corrected.

>Seeing fair (5-6, Pickering) but very poor conditions due to poor transparency

>0-5m), froquent clouds and strong gusty winds (NE 0-10 kts).

>Altitude = 37 degrees. No dew.

>

>Dust persists, however albedo features appear stronger. Tyrrhenum M., Hesperia,

>Cimmerium M. visible. Hyblaeus Extension and Elysium faintly visible.

>Bright PM limb arc extending over SPR. NP hood small.

>

@ . . . . . . . Here are some Mars images from 29 August. Best,

(30 August 2001 email)

>MARS IMAGES 29 AUGUST, 2001

>D.C. Parker, Coral Gables, FL.  Lynxx PC camera  16-in (41cm) F/6 NEWTONIAN

>            Eyepiece Projection @ f/44.2

>            Integration Times:

>    BLUE (Koheisha, 445nm peak central; BWHM 105nm)   2.40s

>    GREEN (Koheisha, 540nm peak central; BWHM 75nm)   0.76s

>    RED (RG610 - No IR Rejection)                      0.16s

>                    Images flat and dark corrected.

>Seeing fair (5-6, Pickering) but very poor conditions due to poor transparency

>0-5m), froquent clouds and strong gusty winds (NE 2-11 kts).

>Altitude = 37 degrees. No dew.

>

>Dust persists, but albedo features appear stronger. Cimmerium and Sirenum

>Maria visible. Much obscuration in the north, however. Elysium and environs

>(Trivium, Phlegra, Propontis) not visible.

>Bright PM limb arc extending over SPR. NP hood not visible.

>

 

@ . . . . . . . Have enclosed some more Mars images from this morning. Southern maria are a bit more visible, but dust remains. Best,

(1 September 2001 email)

> MARS IMAGES 31 AUGUST, 2001

>D.C. Parker, Coral Gables, FL.  Lynxx PC camera  16-in (41cm) F/6 NEWTONIAN

>            Eyepiece Projection @ f/44.2

>            Integration Times:

>    BLUE (Koheisha, 445nm peak central; BWHM 105nm)   2.60s

>    GREEN (Koheisha, 540nm peak central; BWHM 75nm)   0.80s

>    RED (RG610 - No IR Rejection)                      0.17s

>                    Images flat and dark corrected.

>Seeing only fair (5, Pickering) Transparency 4.5m. Wind S 0-7 kts.

>Altitude = 37-35 degrees. No dew.

> Dust persists, Cimmerium and Sirenum Maria visible. Possible dust clouds in

>Electris. Note streak along northern border of Cimmerium, a feature that has

>been seen for years, especially near quadrature. Olympus Mons near PM limb.

>Propontis I visible nearing CM, but the north remains largely obscured.

>Bright PM limb arc extending over SPR. Possible glimpse of SPC. NP hood

>remains weak.

 

@ . . . . . . . ･･･Here are some Mars images from 3 Sept.   Best,

(4 September 2001 email)

>MARS IMAGES 3 SEPTEMBER, 2001

>

>D.C. Parker, Coral Gables, FL.  Lynxx PC camera  16-in (41cm) F/6 NEWTONIAN

>            Eyepiece Projection @ f/44.2

>            Integration Times:

>    BLUE (Koheisha, 445nm peak central; BWHM 105nm)   2.32-5.20s

>    GREEN (Koheisha, 540nm peak central; BWHM 75nm)   0.72-1.60s

>    RED (RG610 - No IR Rejection)                     0.16-0.34s

>                    Images flat and dark corrected.

>Seeing fairly good (7-8, Pickering) Transparency variable (3-5m) due to high

>cirrus and fast cumulus.  Wind gusty, NE-ENE 2-10 kts. Altitude = 35 degrees.

>No dew.

>Visibility of albedo features improving; western Sirenum M., Titanum S., and

>Gigantum S. seen. Poss streak in Daedalia. Olympus Mons visible.

>Bright PM limb arc extending over SPR. Possible glimpse of SPC. NP hood

>remains weak.

>

 

@ . . . . . . . Here are some Mars images from last night (6 Sept). Bright dust clouds appear to continue to erupt in the Solis Planitia. Best,

(6 September 2001 email)

>MARS IMAGES 6 SEPTEMBER, 2001>D.C. Parker, Coral Gables, FL.  Lynxx PC camera  16-in (41cm) F/6 NEWTONIAN

>            Eyepiece Projection @ f/44.2

>            Integration Times:

>    BLUE (Koheisha, 445nm peak central; BWHM 105nm)   2.48s

>    GREEN (Koheisha, 540nm peak central; BWHM 75nm)   0.80s

>    RED (RG610 - No IR Rejection)                     0.18-0.22s

>                    Images flat and dark corrected.

>Seeing good (7-8, Pickering) despite frequent rain clouds. Transparency

>variable (3-5m). Wind gusty, ENE 0-9 kts. Altitude = 37-36 degrees.

>No dew.

>Bright dust clouds continue to erupt in Solis Planitia. Bright cloud over

>Solis Lacus centered approx. 90W, 25N. -- also bright in green. In addition,

>Sirenum S. very faint, with dust clouds noted in Phaethontis extending

>eastward, obscuring Aonius Sinus. Phoenicis L. very dark. Phasis (?) noted.

>The four great Tharsis volcanoes again prominent. SPC very small, while NP

>Hood remains small, disorganized. Bright PM limb haze persists.

>

 

@ . . . . . . . Date: Tue, 11 Sep 2001 23:44:27 +0100

From: Donald Parker <dparker@netside.net>

To: vzv03210@nifty.ne.jp

Subject: Your kind letter

 

 Dear Masatsugu,

 

Thank you so much for your kind e-mail. We are still pretty much dazed here after the rapidly unfolding events. We appreciate your concern and the support of our friends in Japan. You have made a very bad day a little less painful.

 Sincerely,

 

 Don PARKER (Miami, FL, USA)

dparker@netside.net

dcpmiami@earthlink.net

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