Go Back   IceInSpace > Images > Solar System

Thread Tools Rate Thread
Old 12-11-2023, 01:47 PM
bkm2304's Avatar
bkm2304 (Richard Brown)
Heads Up!

bkm2304 is offline
Join Date: Jan 2007
Location: Glen William, NSW
Posts: 551
Deslandres 23 October

Hi all,
Deslandres crater is a very complex, very large (256km Dia.) structure with lots of overlying features. Named for Henri-Alexandre Deslandres, French astronomer best remembered as a pioneer of heliospectrography.

Within the ruins of Deslandres is Hell - the crater not the scary place - named for Hungarian astronomer and Jesuit Priest, Maximillian Hell (1720-1792) who observed the historical 1769 transit of Venus from northern Finland, also observed by Captain Cook from Tahiti. The observations of this transit were the brain-child of Edmund Halley who saw it as an opportunity to refine the distance to the sun and size of Venus - two critical measurements for placing us in perspective in the Solar System.

What is left of crater Lexell (62km Dia.) is named for Anders Lexell (1740-1784), mathematician and celestial mechanics pioneer who calculated the orbit of Uranus.

Crater Walther (128km Dia.) named for Bernhard Walther (1430-1509), German amateur astronomer who, prior to Tycho, was a superb observational and positional astronomer. So good were his observations (no telescopes invented yet!) that none other than Copernicus used his observations (although mis-attributing them) in formulating his Heliocentric theory. Walther had top instruments for his time and a printing press (as you do) so he could publish astronomical works as well! And just to keep the name-dropping going, Walther's house was bought by artist Albrecht Durer after his death.

Approximately 2000 frames taken with Celestron CPC C9.25"and ZWO 178M processed via AS3! with final stack of 10%,then sharpened in Registax.

Hi res version on flickr.


Attached Thumbnails
Click for full-size image (2023-10-23- Deslandres.jpg)
189.3 KB35 views
Click for full-size image (2023-10-23- Deslandres - Featrues.jpg)
186.0 KB32 views

Last edited by bkm2304; 12-11-2023 at 08:54 PM.
Reply With Quote
Old 12-11-2023, 06:25 PM
Dazzled by the Cosmos.

Dennis is online now
Join Date: May 2005
Location: Brisbane
Posts: 11,696
Very nice Richard, nice detail and nice processing.

Reply With Quote
Old 13-11-2023, 09:22 AM
Dave882 (David)
Registered User

Dave882 is online now
Join Date: Nov 2020
Location: PADSTOW
Posts: 1,967
Lovely detail!
Reply With Quote
Old 13-11-2023, 09:24 AM
Saturnine (Jeff)
Registered User

Saturnine is offline
Join Date: Jul 2008
Location: Wollongong
Posts: 2,110
Very excellent Deslandres Richard, very crisp image and an lighting angle that provides nice contrast, bringing out lots of the smaller craters etc.
Reply With Quote
Old 16-11-2023, 07:21 AM
5ash's Avatar
5ash (Philip)

5ash is offline
Join Date: Mar 2005
Location: Hunter valley. nsw
Posts: 1,111
Lovely , so much detail.well done.
Reply With Quote


Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT +10. The time is now 08:56 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Astronomy and Electronics Centre