Moretus, Clavius & LongomontanusPosted By Stefan Lammel |
Hi All,
Here is a mosaic from 28th March 21:29UT -
Moretus, Clavius & Longomontanus
http://www.pbase.com/slammel/image/78201113/original
http://www.pbase.com/slammel/image/78205949/original (1.5x)
Moretus & Curtius
http://www.pbase.com/slammel/image/78207260/original (2x)
There are 3 things that caught my eye here (more easily seen in the
enlarged section of Moretus and Curtius) - the comparative brightness
of the central peak of Moretus, the criss-cross pattern on the floor
of Curtius and the linear diagonal markings to the left of Curtius.
The central peak of Moretus has a chalky, almost luminous appearance
here, even those parts in shadow are relatively bright under this
lighting. I wonder if all central peaks of relatively young craters
have this brightness and what causes it.
The pattern of marks on the floor of Curtius looks quite strange, I
have looked around for references to the marks but found nothing, they
look like linear ridges to me. There are faint signs of more linear
ridges on the left side of the crater floor which seem to run more
parallel and are aligned with the linear scarring to the left of the
crater, maybe all these are connected.
The linear diagonal markings to the left of Curtius extend up to
Moretus and there are similar marks all over the image. To me this
looks like scarring from the ejecta of a large crater or basin
formation to the northwest. Its not too clear to me if Moretus is
affected by this scarring, I can't see visible linear scarring on the
crater floor as there is with Curtius, though some sections of the
east wall appear to be affected or aligned with the markings. Also if
Moretus was created after the ejecta event I would think the scars
immediately to the left of the crater would not still be visible.
10in f4.8 Newtonian, DMK 21AF04, 4x PowerMate, green filter, Registax
v4, PSE 5, 1/30s (gain 740), 1000/6000, MAP: 30-48x 64, 3 frame mosaic
Regards,
Stefan
Here is a mosaic from 28th March 21:29UT -
Moretus, Clavius & Longomontanus
http://www.pbase.com/slammel/image/78201113/original
http://www.pbase.com/slammel/image/78205949/original (1.5x)
Moretus & Curtius
http://www.pbase.com/slammel/image/78207260/original (2x)
There are 3 things that caught my eye here (more easily seen in the
enlarged section of Moretus and Curtius) - the comparative brightness
of the central peak of Moretus, the criss-cross pattern on the floor
of Curtius and the linear diagonal markings to the left of Curtius.
The central peak of Moretus has a chalky, almost luminous appearance
here, even those parts in shadow are relatively bright under this
lighting. I wonder if all central peaks of relatively young craters
have this brightness and what causes it.
The pattern of marks on the floor of Curtius looks quite strange, I
have looked around for references to the marks but found nothing, they
look like linear ridges to me. There are faint signs of more linear
ridges on the left side of the crater floor which seem to run more
parallel and are aligned with the linear scarring to the left of the
crater, maybe all these are connected.
The linear diagonal markings to the left of Curtius extend up to
Moretus and there are similar marks all over the image. To me this
looks like scarring from the ejecta of a large crater or basin
formation to the northwest. Its not too clear to me if Moretus is
affected by this scarring, I can't see visible linear scarring on the
crater floor as there is with Curtius, though some sections of the
east wall appear to be affected or aligned with the markings. Also if
Moretus was created after the ejecta event I would think the scars
immediately to the left of the crater would not still be visible.
10in f4.8 Newtonian, DMK 21AF04, 4x PowerMate, green filter, Registax
v4, PSE 5, 1/30s (gain 740), 1000/6000, MAP: 30-48x 64, 3 frame mosaic
Regards,
Stefan
