LtE in CMO #285

From Donald C PARKER



. . . . . . .Date: Thu, 11 Dec 2003 00:39:09 +0000

Subject: Mars Images

 

Hi All,

I have attached some Mars images from 9-10 December. Looks pretty normal for the season.

Best,

MARS IMAGES 9-10 December, 2003

 

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

ST9XE CCD Camera Eyepiece Projection @ f/55

Integration Times: RRGB Images

RED (RG610 Red Filter, 610-1100nm: NO IR Rejection) 0.17s 2 images

GREEN (CFW8C, 531nm central; BWHM 86nm) 0.50s 4 images

BLUE (CFW8C, 450nm central, BWHM 116nm) 2.5s 5 images

Images bias,flat and dark corrected.

 

Seeing good (7 Pickering) but high steady winds E, 7-17 kts. Transparency = 4-4.5m .

Altitude = 62 degrees. No dew.

 

Difficult conditions due to high winds. Chryse and Candor bright, especially in red light.

Light cloud in northern Tharsis. NP Hood moderately bright.

 

 

. . . . . . .Date: Sat, 13 Dec 2003 07:31:33 +0000

Subject: DUST STORM ON MARS

 

Hi All,

I have attached some Mars images taken today under very poor conditions. A significant dust storm has arisen to cover Chryse, Erythraeum M., Aurorae Sinus, Candor, with smaller clouds in northern Argyre and possibly Aram.

On 10 December Chryse and Candor were bright in red light but no definite obscurations were present.

Best,

MARS IMAGES 13 December, 2003

 

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

ST9XE CCD Camera Eyepiece Projection @ f/55

Integration Times: RRGB Images

RED (RG610 Red Filter, 610-1100nm: NO IR Rejection) 0.15s 1-2 images

GREEN (CFW8C, 531nm central; BWHM 86nm) 0.58s 3 images

BLUE (CFW8C, 450nm central, BWHM 116nm) 2.65-3.00s 3-4 images

Images bias,flat and dark corrected.

 

Seeing poor (4 Pickering) with 90% overcast, altocumulus and high cirrus.

Transparency = 0-4m . Wind E 0-5 kts. Altitude = 53-38 degrees. No dew.

 

Large bright dust clouds in Chryse extending south and west across Eos and west into Candor. Smaller dust clouds in Erythraeum M. and northern Argyre. Most of Aurorae Sinus obscured. NP Hood weak. Dust bright in green and to a lesser extend in blue. Possible additional cloud in Aram on PM limb.

 

. . . . . . .Date: Sun, 14 Dec 2003 21:55:16 +0000

Subject: Mars Images - Dust

 

Hi All,

I have attached a Mars image from 14 December. The dust appears to have expanded southward. A possible secondary dust cloud in eastern Thaumasia. See Paul Maxson's image taken 91 minutes later.

Image taken with Tippy D'Auria's Meade 12-in LX200. Miami, FL.

Best,

MARS IMAGES, 14 December, 2003

 

D.C. Parker, S. Faworski, T. D'Auria

Miami, FL. 12-in (32cm) Meade SCT

 

ToUCam Pro Camera Eyepiece Projection @ f/18.8

Infrared Rejection Filter

Integration Time: 1/25 sec. 10 fps

Processed in K3CCD 600/1201 frames selected (auto).

Images dark corrected.

 

Seeing fairly good, (7 Pickering) -- pre cold front. Transparency = 4.0-4.5m.

No Wind. Altitude = 62 degrees. Light dew.

 

Dust expanded southward, covering most of Bosporos Planum and extending into Argyre. Small bright clouds over Eos, Capri Cornu and possibly in eastern Thaumasia. Aram Chaos bright - possibly dust.

 

. . . . . . .Date: Mon, 15 Dec 2003 04:00:13 +0000

From: Donald Parker

To: vzv03210@nifty.com

Subject: Re: DPk Dust expanded (ob AKUTSU)

 

Thanks, Masatsugu,

Congratulations to Tomio. Looks like it's getting interesting!!

Best,

Don

 

. . . . . . .Date: Wed, 17 Dec 2003 06:21:45 +0000

Subject: Mars Images

 

Hi All,

I have attached some Mars images from 15-16 December. Dust has expanded eastward but pretty much limited to the southern hemisphere. North Polar Hood appears unaffected.

Best,

MARS IMAGES 15-16 December, 2003

 

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

ST9XE CCD Camera Eyepiece Projection @ f/55

Integration Times: RRGB Images

RED (RG610 Red Filter, 610-1100nm: NO IR Rejection) 0.15-0.17s 2-3 images

GREEN (CFW8C, 531nm central; BWHM 86nm) 0.58s 3-5 images

BLUE (CFW8C, 450nm central, BWHM 116nm) 2.50s 4-6 images

Images bias,flat and dark corrected.

 

Seeing highly variable, frequent fast cumulus clouds (4-8 Pickering) .

Transparency = 0-5m . High Wind NE 7-21 kts. Altitude = 64-54 degrees. No dew.

 

Dust has extended eastward over Bosporos, Argyre and into Noachis and Deucalionis Regio. Aram not bright until it neared the PM limb. Chryse now appears normal. Aurorae Sinus very dark. North Polar Hood moderately bright, bluish.

 

 

. . . . . . .Date: Thu, 18 Dec 2003 05:04:52 +0000

Subject: Mars Images, Drawings

 

Hi All,

I have attached a webcam image and some drawings from 18 December. Conditions were very poor, with cloud cover. The dust appears to be confined to the southern hemisphere and moving eastward, possibly into Hellas (although this might be a limb effect).

Best,

 

MARS IMAGES, 18 December, 2003

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

ToUCam Pro Camera Eyepiece Projection @ f/21.7

Infrared Rejection Filter

Integration Time: 1/25 sec. 10 fps. GAIN = Maximum.

Processed in K3CCD 245/500 frames selected (auto).

Images dark corrected.

 

Image shot through heavy cloud layer. Transparency =1m. Mars barely visible Seeing variable but surprisingly good (4-7 Pickering) --post cold front. W Wind 4 kts. Altitude =47 degrees. No dew.

Dust very bright over Noachis near PM limb.

Dust streak across Argyre. NP Hood prominent.

 

. . . . . . .Date: Mon, 22 Dec 2003 22:40:05 +0000

Subject: Mars Images

 

Hi All,

I have attached some images from 21 December. Seeing poor. Dust over Hellas, Yaonis-Hellespontus.

Best,

MARS IMAGES 21 December, 2003

 

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

ST9XE CCD Camera Eyepiece Projection @ f/59

Integration Times: RRGB Images

RED (RG610 Red Filter, 610-1100nm: NO IR Rejection) 0.15-0.17s 1-2 images

GREEN (CFW8C, 531nm central; BWHM 86nm) 0.65-0.62s 2-4 images

BLUE (CFW8C, 450nm central, BWHM 116nm) 2.70-2.80s 5-6 images

Images bias, flat and dark corrected.

 

Seeing poor, (2-3 Pickering); post cold front . Transparency = 5m . Wind N 3-5 kts. Altitude = 62-48 degrees. No dew.

 

Dust appears limited to the Hellas region, with small clouds obscuring Hellespontus-Yaonis. Streak still covering Noachis. NP Hood very weak. Hint of Blue Syrtis Cloud on PM limb.

Seeing poor.

 

 


Don PARKER (Miami, FL, USA)

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