LtE in CMO #253

From Donald C PARKER


@. . . . . . . . .Here are some Mars images from 24 Oct. Some dust streaks remain. Interesting SPC and environs. Best,

(25 October 2001 email)

>MARS IMAGES 24 OCTOBER, 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)   2.76s

>    GREEN (Koheisha, 540nm peak central; BWHM 75nm)   0.94s

>    RED (RG610 - No IR Rejection)                     0.21s

>                    Images flat and dark corrected.

>       

>Seeing fair,variable (3-6, Pickering). Transparency good (4.5m). Wind WSW

>0-2 kts. Altitude = 38-30 degrees. No dew.

>

>Albedo features more distinct but dust streaks still present across Eos and

>Erythraeum M. However, fine details like Hydrae S., Hydraotes, and Cantabras

>visible. PM limb and arctic haze still very prominent.

>Note white cloud north of SPC in Ogygis R. SPC small, bright with small

>western projection discernible in red light -- possibly "Mountains of

>Mitchell," or Novus Mons.

>

@ . . . . . . . Here are some Mars images from 8 and 11 November. Things look back to normal for the season. Best,

  (15 November 2001 email)

>MARS IMAGES 8-9 NOVEMBER, 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)   0.82s

>    RED (RG610 - No IR Rejection)                     0.18s

>                    Images flat and dark corrected.

>       

>Seeing good (7-8, Pickering). Transparency good (5m). Wind E 0-1 kts.

>Altitude = 44-41 degrees. Mild dew.

>Albedo features appear fairly normal in morphology and intensity both visually

>and on CCD. Hesperia clear of dust. Cimmerium M. dark with Laestrygonum Sinus

>prominent. Scamander seen separating Eridania and Electris. Trivium-Cerberus

>barely visible, possibly because of the axial tilt.

>East limb and arctic haze persists. SPC tiny, bright with "outliers" to its

>north and west.

>

>MARS IMAGES 11-12 NOVEMBER, 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)   3.00s

>    GREEN (Koheisha, 540nm peak central; BWHM 75nm)   0.92s

>    RED (RG610 - No IR Rejection)                     0.21s

>                    Images flat and dark corrected.

>       

>Seeing  fair (5, Pickering). Transparency variable (0-4.5m) with frequent

>clouds. Wind NE 0-2 kts. Altitude = 45-40 degrees. Mild dew.

>Albedo features appear fairly normal in morphology and intensity both visually

>and on CCD. Cimmerium M. and Sirenum M. dark. Scamander again seen separating

>Eridania and Electris. Trivium-Cerberus possibly visible as faint halftone on

>NW limb.

>East limb and arctic hazes persist. SPC tiny, bright.

>

@ . . . . . . . Here are some Mars images from last night. Note the darkening in Daedalia-Claritas, much like that seen in 1973. Also a bright (in red and green) cloud over Ogygis R., Argyre, and eastern Bosporus. Best,  

(21 November 2001 email)

>MARS IMAGES 20-21 NOVEMBER, 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)   3.40s

>    GREEN (Koheisha, 540nm peak central; BWHM 75nm)   1.12s

>    RED (RG610 - No IR Rejection)                     0.24s

>                    Images flat and dark corrected.

>       

>Seeing  poor (3, Pickering). Transparency variable (0-4.0m) with frequent

>clouds. No wind. Altitude = 43 degrees. Mild dew.

>

>Note bright cloud on SE limb over Bosporus and Ogygis R. Solis Lacus dark but

>small.

 NOTE: darkening in Daedalia-Claritas, similar to that seen in 1973. Bright

>spot east of Solis Lacus in eastern Thaumasia. Aurorae S. and Nectaris P.

>prominent but the Tithonius complex weak to absent.

>SPC tiny, bright. Evening limb haze persists.

>

 

 

@ . . . . . . . Here are some Mars images from 21 November. Best,

(23 November 2001 email)

>MARS IMAGES 21 NOVEMBER, 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)   3.60s

>    GREEN (Koheisha, 540nm peak central; BWHM 75nm)   1.14s

>    RED (RG610 - No IR Rejection)                     0.25s

>                    Images flat and dark corrected.

>       

>Seeing  good (5-8, Pickering). Transparency fair (3.5-4.0m) with high haze.

>Wind NE 0-1 kts. Altitude = 47 46degrees. No dew.

>

>Solis Lacus dark, small. Darkening in Daedalia-Claritas still observed.

>Aurorae S. and Nectaris P. prominent, dark. The Tithonius complex weak but

>visible. Nectar, Ambrosia, Noctis Lacus, Ganges noted. Argyre and Ogygis

>bright in all filters, with Nereidum Fr. seen separating them.

>SPC tiny, bright. Bright evening limb haze persists.

>

 


Don PARKER (Miami, FL, USA )  

park3232@bellsouth.net


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