Jump to content

sgl_imaging_challenge_2021_2.thumb.jpg.72789c04780d7659f5b63ea05534a956.jpg

Rimae Sirsalis, Darwin and Crüger


Recommended Posts

Some wonderful lunar views tonight with my 130mm refractor :smiley:

Rich detail of the terrain visible along the terminator of the 97.7% illuminated disk.

The Rimae Sirsalis was easy to pick out running for over 400km across and between craters, mountains and plains. A little more challenging was the Rimae Darwin which bisects the crater of that name near the prominent, smooth floored Crüger and eventually appears to join with the Rimae Sirsalis, at right angles to it. The floor and walls of Darwin Crater might be best described as chaotic with a wide mixture of terrain visible besides the Rimae. Crüger on the other hand has a really rather smooth and noticeably darker floor and well preserved ramparts.

I can't recall observing this particular crater and rille before. The conditions allowed 300x - 400x to be used rather effectively.

Apparently the Rimae Sirsalis is not only the longest rille on the Moon but also the site of the strongest magnetic anomaly.

Here is a link to a very nice photo of this area by Brian Donovan:

http://www.donovanimages.co.nz/media/astrophotography/lunar-craters/Darwin-Cruger-de_Vico.html

And a link to a nice piece on the "Cloudynights" forum by Tom Glenn on observing this part of the Moon:

https://www.cloudynights.com/topic/640281-observing-guide-to-rimae-sirsalis-the-longest-rille-on-the-moon/

 

 

Edited by John
  • Like 2
Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.