LtE in CMO #254

From Donald C PARKER

@. . . . . . . . Attached are some Mars images from 23 November.

Best,

(Miami 65, Washington 7!!!)

(25 November 2001 email)

>MARS IMAGES 23 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 (Koh-eisha, 445nm peak central; BWHM 105nm) 3.00s

> GREEN (Koh-eisha, 540nm peak central; BWHM 75nm) 1.04-1.20s

> RED (RG610 - No IR Rejection) 0.24-0.28s

> Images flat and dark corrected.

>Seeing fair (4-6, Pickering). Transparency fair (3.5-4.0m) with high haze

>and frequent clouds. Wind ESE 2-8 kts. Altitude = 45-44 degrees. No dew.

>Solis Lacus dark, small. Aurorae S., Nectaris P., Oxia P., and Margaritifer S.

>prominent, dark. The Tithonius complex weak but easily visible. Ganges,

>Acidalium, and Lunae Lacus appear normal. Argyre and Ogygis bright in all

>filters, with Nereidum Fr. seen separating them.

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

@ . . . . . .Here are some Mars images from 26 and 27 November.

Note the brightening in Edom in the red light images of 27 Nov.

(29 November 2001 email)

>MARS IMAGES 26-27 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 (Koh-eisha, 445nm peak central; BWHM 105nm) 2.80s

> GREEN (Koh-eisha, 540nm peak central; BWHM 75nm) 0.98s

> RED (RG610 - No IR Rejection) 0.24s

> Images flat and dark corrected.

>Seeing fair to good (6-7, Pickering). Transparency variable (0-4.5m) with

>frequent clouds. Wind was a problem: NE 4-19 kts. Altitude = 48-43 degrees.

>No dew.

>Note localized cloud (rotates with planet) in eastern Thaumasia -- bright

>in blue and green. SPC tiny, bright. Bright evening limb haze persists.

>Argyre and Chryse appear normal. Noachis bright on evening limb. Oxia P.

>and Hydrae S. prominent; Nereidum Fr. again seen. Bosporus, Aurorae S., and

>MArgaritifer S. dark. Acidalium M. seen through arctic haze.

>MARS IMAGES 27 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 (Koh-eisha, 445nm peak central; BWHM 105nm) 2.80s

> GREEN (Koh-eisha, 540nm peak central; BWHM 75nm) 0.96s

> RED (RG610 - No IR Rejection) 0.23-0.24s

> Images flat and dark corrected.

>Seeing good (6-8, Pickering). Transparency good (4.5-5.0m). Wind was a

>problem: NE 4-14 kts. Altitude = 49-48 degrees. No dew.

>NOTE: Edom bright in red light, even with extensive haze in Moab.

>Argyre appears normal, but some brightening in eastern Noachis. Oxia P.

>again prominent. Meridiani S. and Sabaeus S. dark as is Pandorae Fr.

>Deucalionis R., however, is dusky.

>SPC tiny, bright. Bright evening limb haze persists, merging into large

>NP Hood.

@ . . . . . .Here are some Mars images from 25 November.

(30 November 2001 email)

>MARS IMAGES 25 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 (Koh-eisha, 445nm peak central; BWHM 105nm) 2.80s

> GREEN (Koh-eisha, 540nm peak central; BWHM 75nm) 0.98s

> RED (RG610 - No IR Rejection) 0.24s

> Images flat and dark corrected.

>Seeing fair to good (7, Pickering). Transparency = 4.5m. Wind was a problem

>ENE 2-12 kts. Altitude = 47-45 degrees. No dew.

>Sabaeus/Meridiani S., Margaritifer S. Protei L., and Aurorae S. dark. Bosporu

>broad, dark. Oxia P. distinct and Hydrae Sinus and Hydraotes detected. M.

>Erythraeum dark, elongated eastward. Nereidum Fr. seen separating Argyre and

>Ogygis R.

>Bright evening limb persists...Noachis very bright near limb. Localized cloud

>in eastern Thaumasia.

@ . . . . . .Here are some more Mars Images from 29 Nov, 2 Dec., and 3 Dec. Best,

(6 December 2001 email)

>MARS IMAGES 29 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 (Koh-eisha, 445nm peak central; BWHM 105nm) 2.80s

> GREEN (Koh-eisha, 540nm peak central; BWHM 75nm) 0.96s

> RED (RG610 - No IR Rejection) 0.22s

> Images flat and dark corrected.

>Seeing fair (5-6, Pickering). Transparency = 5m. Wind was a problem:

>NE-E 5-10 kts. Altitude = 49-48 degrees. No dew.

>Edom bright in red light; Deucalionis R. dull.

>Sabaeus/Meridiani S. dark. Erythraeum M. dark, elongated eastward and joining

>a very dark Pandorae Fr.

>Bright evening limb persists with Hellas bright in all colors on SE limb.

>Noachis no longer bright, being away from the limb.

>MARS IMAGES 2 DECEMBER, 2001

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

> Eyepiece Projection @ f/44.2

> Integration Times:

> BLUE (Koh-eisha, 445nm peak central; BWHM 105nm) 2.80s

> GREEN (Koh-eisha, 540nm peak central; BWHM 75nm) 0.96s

> RED (RG610 - No IR Rejection) 0.22-0.24s

> Images flat and dark corrected.

>Seeing poor (2-3, Pickering). Transparency = 4.5-5m. Wind NE 0-7 kts.

>Altitude = 50-45 degrees. No dew.

>Hellas brilliant in all colors, although some detail faintly perceptible on

>its floor in red light. Yaonis-Hellespontis not detected. Serpentis M. short,

>moderately dark. Hadriacum M. and Euripus dark on limb.

>MARS IMAGES 3 DECEMBER, 2001

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

> Eyepiece Projection @ f/44.2

> Integration Times:

> BLUE (Koh-eisha, 445nm peak central; BWHM 105nm) 2.60-2.80s

> GREEN (Koh-eisha, 540nm peak central; BWHM 75nm) 0.92-0.96s

> RED (RG610 - No IR Rejection) 0.22-0.24s

> Images flat and dark corrected.

>Seeing fair (4-6, Pickering). Transparency variable = 4.5-5m. Frequent clouds.

>Wind high and gusty, NE 4-12 kts. Altitude = 50-45 degrees. No dew.

>Hellas brilliant in all colors, although some detail visible on its floor

>in red light. Yaonis-Hellespontis not visible. Hadriacum M. and Euripus

>conspicuous. Syrtis Minor very dark.

@ . . . . . .Here are some Mars images from 8-9 December. Very good seeing for a change! Mars looks pretty normal for the season. Best,

(10 December 2001 email)

> MARS IMAGES 8-9 DECEMBER, 2001

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

> Eyepiece Projection @ f/44.2

> Integration Times:

> BLUE (Koh-eisha, 445nm peak central; BWHM 105nm) 2.84s

> GREEN (Koh-eisha, 540nm peak central; BWHM 75nm) 0.99s

> RED (RG610 - No IR Rejection) 0.24s

> Images flat and dark corrected.

> Seeing excellent (8-9, Pickering). Transparency fair = 4-4.5m. Frequent clouds.

> Wind gusty, E-ESE 0-8 kts. Altitude = 51-38 degrees. No dew.

> Hellas light but no longer brilliant once away from the PM limb. Detail now

> easily visible on its floor: Zea Lacus, Alpheus, and Peneus. Prometheii S.

> dark.

> Hadriacum M. and Euripus conspicuous. Syrtis Minor very dark. Hesperia well

> delineated with Cerberus III seen on a few of the images. Syrtis Major dark;

> Moeris L. conspicuous.

> Evening limb haze merging into NP Hood. Some cloud in Libya-Isidis.

@ . . . . . .Here are some more Mars images.

Hope you all have a Merry Christmas!

Best,

(20 December 2001 email)

>MARS IMAGES 11 DECEMBER, 2001

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

> Eyepiece Projection @ f/44.2

> Integration Times:

> BLUE (Koh-eisha, 445nm peak central; BWHM 105nm) 2.80s

> GREEN (Koh-eisha, 540nm peak central; BWHM 75nm) 0.92s

> RED (RG610 - No IR Rejection) 0.22s

> Images flat and dark corrected.

>Seeing very good (7-8, Pickering). Transparency = 4.5m. Wind gusty, ENE-ESE

>6-14 kts. Altitude = 52-51 degrees. No dew.

>Tyrhennum M., Cimmerium M., Hesperia, and Tritonis S. all conspicuous. M.

>Hadriacum bordering dull cloud over Hellas on AM limb. Elysium bright near NE

>limb. Xanthus and Scamander visible on either side of Eridania.

>SPC tiny; PM limb haze remains prominent.

>MARS IMAGES 12 DECEMBER, 2001

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

> Eyepiece Projection @ f/44.2

> Integration Times:

> BLUE (Koh-eisha, 445nm peak central; BWHM 105nm) 2.60s

> GREEN (Koh-eisha, 540nm peak central; BWHM 75nm) 0.89s

> RED (RG610 - No IR Rejection) 0.22s

> Images flat and dark corrected.

>Seeing fairly good (6-7, Pickering). Transparency fair = 4.0m, with fast

>moving clouds. Wind gusty, ENE 5-15 kts. Altitude = 52-50 degrees. No dew.

>Tyrhennum M., Cimmerium M., Hesperia, and Tritonis S. all conspicuous. Mare

>Hadriacum has bluish cast, possible from dull cloud over Hellas on AM limb.

>limb.

>SPC tiny; PM limb haze remains prominent.

>MARS IMAGES 14-15 DECEMBER, 2001

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

> Eyepiece Projection @ f/44.2

> Integration Times:

> BLUE (Koh-eisha, 445nm peak central; BWHM 105nm) 2.60s

> GREEN (Koh-eisha, 540nm peak central; BWHM 75nm) 0.88s

> RED (RG610 - No IR Rejection) 0.21s

> Images flat and dark corrected.

>Seeing fair(5, Pickering). Transparency good = 5.0m, with occ high cirrus.

>Wind gusty, SE 4-13 kts. Altitude = 46-43 degrees. No dew.

>Tryhennum M., Cimmerium M., Hesperia, and Tritonis S. all conspicuous.

>Trivium-Cerberus faintly visible through NE haze.

>SPC tiny; PM limb haze remains prominent.

@ . . . . . .Here are some Mars images from 17 December... clouds increasing.

Best,

(21 December 2001 email)

>MARS IMAGES 17 DECEMBER, 2001

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

> Eyepiece Projection @ f/44.2

> Integration Times:

> BLUE (Koh-eisha, 445nm peak central; BWHM 105nm) 2.56s

> GREEN (Koh-eisha, 540nm peak central; BWHM 75nm) 0.88s

> RED (RG610 - No IR Rejection) 0.20s

> Images flat and dark corrected.

>Seeing fair(5, Pickering). Transparency good = 5.0m.

>Wind S 0-7 kts. Altitude = 53-46 degrees. No dew.

>Sirenum M., Cimmerium M., and Scamander all conspicuous.

>Note bright cloud over Elysium near terminator, becoming more diffuse as

>planet rotates. SPC tiny; PM limb haze remains prominent.

Don PARKER (Miami, FL, USA )

park3232@bellsouth.net

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