Posts by abramson

by abramson
08.02.2018, 13:24
Forum: Celestia Users
Topic: So... is anyone working on adding the tesla/spacex/musk roadster?
Replies: 6
Views: 2547

Re: So... is anyone working on adding the tesla/spacex/musk roadster?

Sure. The orbital elements are already in the JPL Horizons system. I have just made an ssc. Reaches Mars orbit in july. Back close to Earth in 2026. Now we need a nice model...

Unpack teh zip file anywhere in your extras folder. Enjoy.

Guillermo
by abramson
30.11.2017, 18:54
Forum: Add-on development
Topic: Request: 'Oumuamua
Replies: 3
Views: 1579

Re: Request: 'Oumuamua

Sure. Unzip in your Extras folder. The ssc contains both a keplerian orbit and a trajectory generated with JPL Horizons. The problem with the keplerian orbit is that Celestia does not show the trajectory of hyperbolic orbits even if the object is selected. But otherwise, both work. The sampled traje...
by abramson
01.06.2013, 13:11
Forum: Development
Topic: How to develop trajectory for Chelyabinsk Meteor
Replies: 7
Views: 2999

Re: How to develop trajectory for Chelyabinsk Meteor

I downloaded your addon, but unfortunately I've not been able to replicate the accuracy of the trajectory that you obviously were able to in the making of this video. Sorry, the uploaded addon contains just the published elements. As you notice, I had to tweak them to make the orbit intersect the E...
by abramson
31.05.2013, 16:04
Forum: Development
Topic: How to develop trajectory for Chelyabinsk Meteor
Replies: 7
Views: 2999

Re: How to develop trajectory for Chelyabinsk Meteor

I made a short video showing the last half orbit of the Chelyabinsk meteor and its fall over Chelyabinsk. I very small retouch of Zuluaga's mean orbital data, within their standard deviations, was enough to have it falling in the right place. Enjoy!

Guillermo

http://youtu.be/HaBIxLFI-Yo
by abramson
28.05.2013, 15:08
Forum: Development
Topic: No more file updates from me
Replies: 12
Views: 5129

Re: No more file updates from me

granthutchison wrote:I'll be making no more updates to the extrasolar planet files.

Thank you for all the work during these years, Grant. Your uploads where the only updates of late. I think I will make a final SCN check and freeze my version of Celestia.

Guillermo
by abramson
26.05.2013, 21:38
Forum: Development
Topic: How to develop trajectory for Chelyabinsk Meteor
Replies: 7
Views: 2999

Re: How to develop trajectory for Chelyabinsk Meteor

Hi. I have made an ssc file for the computed trajectory of the Cheliabinsk meteoroid. The orbit was calculated by Jorge Zuluaga et al., using geometrical analysis of the videos. His results appeared in the arxiv of physics preprints, but I used an update found at his webpage: FACom . The result is r...
by abramson
23.04.2013, 20:04
Forum: Help Central
Topic: I don't know how to use the edit mode.
Replies: 2
Views: 1577

Re: I don't know how to use the edit mode.

Hi, CelestialFansInChina! You enter edit mode with @. You probably want to do something more: Start Celestia in verbose mode (from command line): celestia --verbose > align.log Go to object as usual Enter edit mode: @ Rotate around X and Y with ctrl+shift+left button+drag Rotate around Z with ctrl+s...
by abramson
21.04.2013, 19:16
Forum: Physics and Astronomy
Topic: Comets Lemmon and PanSTARRS
Replies: 3
Views: 2151

Re: Comets Lemmon and PanSTARRS

And the two comets...

Dos cometas (2888).jpg
by abramson
21.04.2013, 19:15
Forum: Physics and Astronomy
Topic: Comets Lemmon and PanSTARRS
Replies: 3
Views: 2151

Comets Lemmon and PanSTARRS

I hope everybody caught at least a bit of comet PanSTARRS last month. For those of you that haven't, let me tell you that it was a treat, and let me share a few pictures I shot. Additionaly, from my latitudes we could see also another bright comet at the same time, which was amazing. Comet Lemmon wa...
by abramson
20.04.2013, 21:44
Forum: Petit Bistro Entropy
Topic: The Sky at Night Appreciation Thread
Replies: 43
Views: 19090

Re: The Sky at Night Appreciation Thread

Thanks, Bob. I don't know if I posted my images here. Please go to my Flickr photostream to view some more, starting with this one of Lemmon and 47 Tucanae and backwards from there.

Guillermo
by abramson
21.03.2013, 15:36
Forum: Petit Bistro Entropy
Topic: The Sky at Night Appreciation Thread
Replies: 43
Views: 19090

Re: The Sky at Night Appreciation Thread

I have been contacted again by the producers of The Sky at Night. My images of comets PanSTARRS and Lemmon will show up on unday 7th April, BBC1 and Thursday, BBC4, 11th April. I cannot watch the programme from Argentina, but someone else could be interested. Have you seen comet PanSTARRS? It was be...
by abramson
10.03.2013, 15:05
Forum: Add-on development
Topic: Planetary Nebula models (sprites)
Replies: 58
Views: 11315

Re: Planetary Nebula models (sprites)

I think that's rather good!
by abramson
03.02.2013, 19:49
Forum: Ideas & News
Topic: Drawing a better star
Replies: 82
Views: 78791

Re: Drawing a better star

I downloaded an .exe file that made stars looking better. It worked and looked pretty nice, but it looks strange when the stars are too bright. Any idea of how to get rid of that? Hi, Nibla. You probably downloaded my .exe. I haven't seen this effect before. It's a pity. It's most probably a bug in...
by abramson
08.12.2012, 20:02
Forum: Textures
Topic: Earth Night Lights 2012 -- dead
Replies: 11
Views: 4838

Re: Earth Night Lights 2012

john Van Vliet wrote:here is a screen short with the PX value MULTIPLIED by 1.849
What program is that, John?
G
by abramson
16.11.2012, 02:20
Forum: Physics and Astronomy
Topic: Virtual Moon Atlas
Replies: 1
Views: 1679

Virtual Moon Atlas

For Celestians that enjoy observing the universe besides simulating it: Virtual Moon Atlas has a major update as of today, with version 6. Virtual Moon Atlas is one of the finest pieces of software for the amateur astronomer, a comprehensive observing tool for Moon watchers. One of its authors is Pa...
by abramson
06.11.2012, 01:25
Forum: Lua-Tools
Topic: Lagrange Points for Celestia 1.6.1 - discussion
Replies: 7
Views: 4503

Re: Lagrange Points 1.x for Celestia 1.6.1 - discussion thre

Chuft, is it possible that the add-on doesn't work with Celestia built from SVN? I am getting this:

Clipboard-1.jpg


It broke the Lua-ET interface...
by abramson
04.11.2012, 14:18
Forum: Celestia Users
Topic: Space Art
Replies: 34
Views: 14702

Re: Space Art

Storm clouds between Bariloche and Buenos Aires used as proxies of the top of the Jovian atmosphere. I just nudged the color balance to make them less watery white (I matched their color to part of an image of Jupiter from space). As for the blue sky, it may well be such in the region where Raileigh...
by abramson
28.10.2012, 14:21
Forum: Bugs
Topic: Error on checkout/update Celestia SVN
Replies: 8
Views: 4190

Re: Error on checkout/update Celestia SVN

No problems on my side either, seconds ago (TortoiseSVN).
by abramson
24.10.2012, 23:06
Forum: Celestia Users
Topic: Do you really want that??
Replies: 14
Views: 5350

Re: Do you really want that??

A trekkie of old times myself, my answer is "no, this is not what I want".

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