Search found 24 matches

by Drewster
Thu May 27, 2021 3:00 am
Forum: The Observation Deck: Latest Sky Photography
Topic: Submissions: 2021 May
Replies: 82
Views: 115206

Re: Submissions: 2021 May

Code: Select all Lunar Eclipse of May 26, 2021 www.ancientstarlight.som Copyright: Drew Sullivan Series of images with Canon EOS and static mount from 0245H (PDT, start of eclipse) to sundown. I finally got an that image posted online here: http://www.ancientstarlight.com/sitebuilder/images/Lunar_E...
by Drewster
Wed May 26, 2021 10:28 pm
Forum: The Observation Deck: Latest Sky Photography
Topic: Submissions: 2021 May
Replies: 82
Views: 115206

Re: Submissions: 2021 May

Code: Select all

Lunar Eclipse of May 26, 2021
www.ancientstarlight.som
Copyright: Drew Sullivan


Series of images with Canon EOS and static mount from 0245H (PDT, start of eclipse) to sundown.
by Drewster
Sun Aug 23, 2020 3:39 am
Forum: The Observation Deck: Latest Sky Photography
Topic: Submissions: 2020 August
Replies: 141
Views: 208108

Re: Submissions: 2020 August

Addendum:
UC Santa Cruz, where Sandy Faber worked, has now been evacuated.
by Drewster
Sun Aug 23, 2020 3:22 am
Forum: The Observation Deck: Latest Sky Photography
Topic: Submissions: 2020 August
Replies: 141
Views: 208108

Re: Submissions: 2020 August

The Sun Weeps www.ancientstarlight.com Copyright: Drew Sullivan http://www.ancientstarlight.com/images/Tears%20of%20the%20Santa%20Cruz%20Mountains.jpg After a long dry spell numerous lightning strikes have caused multiple large, converging fires in Northern California. There are so many and they ar...
by Drewster
Thu Aug 20, 2020 2:47 pm
Forum: The Observation Deck: Latest Sky Photography
Topic: Submissions: 2020 August
Replies: 141
Views: 208108

Re: Submissions: 2020 August

How Big Is That www.ancientstarlight.com Copyright: Drew Sullivan http://www.ancientstarlight.com/images/Earth_Mars_Jupiter_Saturn_to_Scale.jpg A comparison of the apparent sizes and actual sizes of Mars, Jupiter and Saturn as they are visible in the sky now in late August. The image with a short d...
by Drewster
Tue Aug 11, 2020 2:35 am
Forum: The Observation Deck: Latest Sky Photography
Topic: Submissions: 2020 August
Replies: 141
Views: 208108

Re: Submissions: 2020 August

Here's lookin at you kid
www.ancientstarlight.com
Copyright: Drew Sullivan Jupiter Aug 10, 2020 0450 UTC (sort of)

Ever think you are spending too much time processing images?
by Drewster
Wed Jan 31, 2018 5:58 pm
Forum: The Observation Deck: Latest Sky Photography
Topic: Submissions: 2018 January
Replies: 100
Views: 159103

Re: Submissions: 2018 January

Lunar Eclipse January 31 2018
http://www.ancientstarlight.com
Copyright: Drew Sullivan The image and information on capture can also be seen here:

http://www.ancientstarlight.com/Luna-Ec ... 01-31.html
by Drewster
Wed Nov 25, 2015 4:38 am
Forum: The Observation Deck: Latest Sky Photography
Topic: Submissions: 2015 November
Replies: 182
Views: 62311

Re: Submissions: 2015 November

Merope Veiled in Dust
http://www.ancientstarlight.comCopyright: Drew Sullivan Merope (just one of the seven sisters) and it's surrounding clouds of dust

The image is also here as a png:
http://www.ancientstarlight.com/Merope.html

Drew Sullivan
by Drewster
Tue Oct 20, 2015 3:39 pm
Forum: The Observation Deck: Latest Sky Photography
Topic: October/November Planetary Conjunction
Replies: 31
Views: 102492

Re: Submissions: 2015 October

Ecliptic - Venus Jupiter Mars Mercury Align
www.ancientstarlight.com
Copyright: Drew Sullivan The image is also available here, both with and without labels

http://www.ancientstarlight.com/Ecliptic_10202015.html

Drew Sullivan
by Drewster
Sun Jul 19, 2015 7:37 pm
Forum: The Observation Deck: Latest Sky Photography
Topic: Submissions: 2015 July
Replies: 224
Views: 85508

Re: Submissions: 2015 July

Moon, Venus and Jupiter all setting http://www.ancientstarlight.com Copyright: Drew Sullivan http://www.ancientstarlight.com/images/Triple_Setting_b.jpg The moon, Venus and Jupiter align not only with each other but with the horizon at moonset (taken a few minutes later than the former image) The i...
by Drewster
Sun Jul 19, 2015 5:25 am
Forum: The Observation Deck: Latest Sky Photography
Topic: Submissions: 2015 July
Replies: 224
Views: 85508

Re: Submissions: 2015 July

Triple Setting of Moon, Venus, Jupiter http://www.ancientstarlight.com Copyright: Drew Sullivan http://www.ancientstarlight.com/images/Triple_Setting.jpg The moon, Venus and Jupiter line up not only with each other, but with the horizon at sunset July 18, Santa Cruz Mountains, California The image ...
by Drewster
Fri Oct 10, 2014 1:20 am
Forum: The Observation Deck: Latest Sky Photography
Topic: Submissions: 2014 October
Replies: 242
Views: 79466

Re: Submissions: 2014 October

Uranus and Lunar Eclipse 8 October 2014 http://www.ancientstarlight.com Copyright: Drew Sullivan http://www.ancientstarlight.com/images/Lunar_Eclipse_and_Uranus_2014-10-08.jpg A page with more details is here: http://www.ancientstarlight.com/Luna-Eclipse-2014-10-08_Moon_Uranus.html There is also a ...
by Drewster
Sun Mar 16, 2014 3:33 am
Forum: The Observation Deck: Latest Sky Photography
Topic: Submissions: 2014 March
Replies: 201
Views: 65884

Re: Submissions: 2014 March

Mars on the Ides
www.ancientstarlight.com
Copyright: Drew Sullivan Mars on the Ides of Mars (0921 UTC March 15 2014)

Mars is nearing opposition. Here Olympus Mons peeps up through surrounding clouds
by Drewster
Wed Mar 13, 2013 3:57 am
Forum: The Observation Deck: Latest Sky Photography
Topic: Submission Gallery: 2013 Comets
Replies: 286
Views: 771229

Re: Submission Gallery: 2013 Comets

C/2011L4 PANSTARRS over the Santa Cruz Mountains
www.ancientstarlight.com
Copyright: Drew Sullivan
by Drewster
Thu Nov 29, 2012 4:21 am
Forum: The Observation Deck: Latest Sky Photography
Topic: Submission Gallery: 2012 November Moon-Jupiter Conjunction
Replies: 13
Views: 8847

Re: Submission Gallery: 2012 November Moon-Jupiter Conjuncti

Full Moon, Full Jupiter
The full moon and Jupiter, 2 degrees 20 min separation, rising through clouds 7PM PST 28 Nov (0100 UTC 29 Nov) 2012
by Drewster
Thu Oct 04, 2012 4:33 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Origins of Globular Clusters
Replies: 19
Views: 2930

Re: Origins of Globular Clusters

Earlier in the evolution of the universe there were probably more numerous large concentrations of dense gas that became Globular Clusters.
Thanks. I think that is the information I was looking for.

Drew S.
by Drewster
Thu Oct 04, 2012 3:24 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Origins of Globular Clusters
Replies: 19
Views: 2930

Origins of Globular Clusters

I have two questions about Globular Clusters: 1) How (under what conditions) did GCs from? Did they start out as very compact objects or did they begin as more extended groups of stars that then coalesced? 2) Are GCs still forming in our galaxy or in any other galaxies at present? If not, were they ...
by Drewster
Sat Mar 24, 2012 5:06 am
Forum: The Observation Deck: Latest Sky Photography
Topic: Recent Submissions: 2012 March 18-25
Replies: 38
Views: 17081

Re: Recent Submissions: 2012 March 18-

Venus in IR G UV

Image

Celestron C14, Flea3 camera. Astrodon UV (Blue-Green color), Astronomiks G and IR filters.

Webpage here:

http://www.ancientstarlight.com/Venus_03_03-2012.html

3 March 2012

Copyright Drew Sullivan 2012
by Drewster
Tue Mar 06, 2012 5:40 am
Forum: The Observation Deck: Latest Sky Photography
Topic: Recent Submissions: 2012 March 5-7
Replies: 25
Views: 5547

Re: Recent Submissions: 2012 March 5-

Venus and Jupiter at Dusk over the Santa Cruz Mountains, California
Drew Sullivan
by Drewster
Wed Sep 28, 2011 6:06 am
Forum: The Observation Deck: Latest Sky Photography
Topic: Recent Submissions: 2011 September 26-28
Replies: 24
Views: 5481

Re: Recent Submissions

Ten Billion Light Years http://www.ancientstarlight.com Copyright: Drew Sullivan http://www.ancientstarlight.com/images/Jones1_10Gly.jpg Just below the blue nebula, Jones 1, lies J233604.7+302355, a quasar with z = 2.094 corresponding to a distance of about 10.2 billion light years. The fact that J...
by Drewster
Wed Sep 28, 2011 5:14 am
Forum: The Observation Deck: Latest Sky Photography
Topic: Recent Submissions: 2011 September 26-28
Replies: 24
Views: 5481

Re: Recent Submissions

Io Rising over Jupiter Sept 27 2011
http://www.ancientstarlight.com
Copyright: Drew Sullivan
by Drewster
Fri Oct 08, 2010 5:15 am
Forum: The Library: Information Desk and Educational Resources
Topic: Redshift and energy conservation
Replies: 16
Views: 3079

Re: Redshift and energy conservation

Are any or all of these statements true: 1) The first law of thermodynamics isn't really a law. (I know it doesn't apply at very small scales where virutal particles can appear/disappear but this is a macroscopic, long lasting system. Is the first law just a Newtonian approximation?) 2) The answer t...
by Drewster
Thu Oct 07, 2010 5:34 pm
Forum: The Library: Information Desk and Educational Resources
Topic: Redshift and energy conservation
Replies: 16
Views: 3079

Re: Redshift and energy conservation

I did read this thread before posting and from the fact that my question got moved here I gather the answer may be here somewhere but if so I don't see/understand the answer.

Any insight into this? Are you implying that there is a GR solution?

Drew Sullivan
by Drewster
Mon Oct 04, 2010 7:15 pm
Forum: The Library: Information Desk and Educational Resources
Topic: Redshift and energy conservation
Replies: 16
Views: 3079

Conservation of energy and expansion

Suppose there are two rocks, galaxies, whatever. They are a certain distance apart, and falling towards each other. This system has a potential and a kinetic energy and the total energy of the system remains constant. Now suppose I reach in and drag the two farther apart. There is now more potential...