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Marswatch

1998-1999 Apparition

Linking Amateur and Professional Mars Observing Communities.

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Images - 1999 August
    (All times U. T. - Images not to scale. Click on image for more or larger scale views where available.)



1-3

No Images.


4

1999-08-04 RTZ Images of Mars Ron Zachary, Rochester Hills, Michigan, (83.05° W, 42.38° N), E-mail: rzachary@compuserve.com
Starlight Xpress MX5c; 14-inch (35 cm) f/11 Schmidt-Cassegrain telescope; Positive Projection at f/44. Color separations performed using MaxIm DL software.

01:09:35 U.T.; CM: 298°; Integration time: 0.45s
Seeing: 4-6/10; Transparency: 3-4/6.


5

1999-08-05 RTZ Images of Mars Ron Zachary, Rochester Hills, Michigan, (83.05° W, 42.38° N), E-mail: rzachary@compuserve.com
Starlight Xpress MX5c; 14-inch (35 cm) f/11 Schmidt-Cassegrain telescope; Positive Projection at f/44.

01:10:57 U.T.; CM: 288°; Integration time: 0.4s
Seeing: 5-6/10; Transparency: 4/6.


6

1999-08-06 DCP Image of Mars Donald C. Parker, Coral Gables, Florida
Lynxx PC camera, 16-in (41cm) f/6 Newtonian, Eyepiece Projection @ f/47.8

Integration Times:
   Blue (BG12 + IR Rejection)   19.00s
   Green (VG9 + IR Rejection)    5.70s
   Red (RG610 - no IR Rejection)   0.49s
Images flat and dark corrected.
Seeing very poor (2-3); Transparency variable, 0-4.0m.; Wind SSW (0-3 knots).
Evening limb haze with some clouds in Libya. Possible South Polar Cap; North polar hazes.

1999-08-06 RDB Drawing of Mars Bob Bunge, Bowie, Maryland, E-mail: rbunge@radix.net
20-inch (51 cm) f/6.4 reflector, 200x

1:45 U.T.

Seeing 4 out of 10.

Not too much to see, but Sytris Major and both polar caps. Dark ring around the North Polar cap.


7

1999-08-07 DCP Image of Mars Donald C. Parker, Coral Gables, Florida
Lynxx PC camera, 16-in (41cm) f/6 Newtonian, Eyepiece Projection @ f/47.8

Integration Times:
   Blue (BG12 + IR Rejection)   17.10s
   Green (VG9 + IR Rejection)    5.13s
   Red (RG610 - no IR Rejection)   0.46s
Images flat and dark corrected.
Seeing GOOD (7-8); Transparency 4.0-5.0m; Wind SSW (0-7 knots).
Evening limb haze with some clouds in Libya. Elysium bright but blended in with the limb haze. Cerberus remains weak. Possible South Polar Cap; North polar hazes.


8

No Images.


9

1999-08-09 DCP Image of Mars Donald C. Parker, Coral Gables, Florida
Lynxx PC camera, 16-in (41cm) f/6 Newtonian, Eyepiece Projection @ f/47.8

Integration Times:
   Blue (BG12 + IR Rejection)   17.10s
   Green (VG9 + IR Rejection)    4.94s
   Red (RG610 - no IR Rejection)   0.42s
Images flat and dark corrected.
Seeing very good (8) but deteriorated later; Transparency 4.0-4.5m; Wind NE-ESE (0-5 knots).
Evening limb haze with some clouds in Libya. No Elysium cloud. Cerberus remains weak. Cerberus III detected. Aethiops noted on the 01:12 UT red light image. Possible South Polar Cap, south polar hazes; north polar hazes with possible North Polar Cap remnant??


10

1999-08-10 FJM Images of Mars Frank J. Melillo, Holtsville, New York, FrankJ12@aol.com


11-13

No Images.


14

1999-08-14 DCP Image of Mars Donald C. Parker, Coral Gables, Florida
Lynxx PC camera, 16-in (41cm) f/6 Newtonian, Eyepiece Projection @ f/47.8

Integration Times:
   Blue (BG12 + IR Rejection)   26.60s
   Green (VG9 + IR Rejection)    6.84s
   Red (RG610 - no IR Rejection)   0.53-0.65s
Images flat and dark corrected.
Seeing fair to poor (4); Transparency poor (3.0m); No wind.
Prominent evening limb haze. No Elysium cloud. Cerberus remains weak. North and South polar clouds.


15

1999-08-15 DCP Image of Mars Donald C. Parker, Coral Gables, Florida
Lynxx PC camera, 16-in (41cm) f/6 Newtonian, Eyepiece Projection @ f/47.8

Integration Times:
   Blue (BG12 + IR Rejection)   15.2-17.1s
   Green (VG9 + IR Rejection)    4.56s
   Red (RG610 - no IR Rejection)   0.38-0.40s
Images flat and dark corrected.
Seeing good (7); Transparency good (5.0m); Wind SSE, gusty (1-6 kts).
Prominent evening limb haze. No Elysium cloud. Cerberus more prominent than previously. Light clouds over Zephyria. North and South polar clouds.


16

No Images.


17

1999-08-17 FJM Images of Mars Frank J. Melillo, Holtsville, New York, FrankJ12@aol.com


18-26

No Images.


27

1999-08-27 DCP Image of Mars Donald C. Parker, Coral Gables, Florida
Lynxx PC camera, 16-in (41cm) f/6 Newtonian, Eyepiece Projection @ f/47.8

Integration Times:
   Blue (BG12 + IR Rejection)   22.00s
   Green (VG9 + IR Rejection)    5.70-6.84s
   Red (RG610 - no IR Rejection)   0.57s
Images flat and dark corrected.
Seeing variable (4-7); Transparency variable (0-4.0m), clouds; Wind NE 0-8 knots.
Solis Lacus dark. Bright clouds in Chryse and Candor. north polar clouds (Hood). Possible North Polar Cap on red light images?? South Polar clouds. Hydaspes noted on 00:46 UT red light image.


28

1999-08-28 RTZ Images of Mars Ron Zachary, Rochester Hills, Michigan, (83.05° W, 42.38° N), E-mail: rzachary@compuserve.com
Starlight Xpress MX5c; 14-inch (35 cm) f/11 Schmidt-Cassegrain telescope; Positive Projection at f/44.

00:46:44 U.T.; CM: 61°; Integration time: 0.55s
Seeing: 6-7/10; Transparency: 4/6.

Altitude, size and magnitude make details on Mars exceedingly difficult for my SCT to resolve. That combined with the fact that I am forced to shoot during the daylight/twilight hours before Mars sinks below the tree-line has, for me, brought this opposition to a close. It has been great fun and I've learned a great deal not to mention all the enjoyable images I've been able to see from the other contributors. Thanks to all the people involved and I'll see you again in 2001!


29

1999-08-29 MF Drawing of Mars Mario Frassati, Crescentino (VC), Italy
8-in (20 cm) f/10 Schmidt-Cassegrain, 400x.

19:40 UT, CM: 326°.
Martian diameter 8", Phase 0.86 Seeing: 4 Ant.


30-31

No Images.



Go to July 1999's Images;

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This page is maintained by David Knighton for the International MarsWatch. The 1998-1999 MarsWatch site it hosted by the Astronomical League as a service to the astronomical community. Comments, corrections, and suggestions can be addressed to webmaster@astroleague.org. This page last updated October 5, 1999.