Latest Work

Hello, I am trying something new with my website. I mostly tend to my Flickr gallery at this point, so to reduce the upkeep and redundancy, I am using the Flickr API to pull my latest images straight from my gallery over there. Clicking on any image will simply take you to its page within my Flickr gallery (external link).

A categorical listing of work, separated into albums, is located here (external link).


Arp 299

Arp 299

You’re looking at ongoing interaction between two or more galaxies, dark lanes of dust, and pink glowing gas associated with heavy star formation.

Data from the following proposals were used to create this image:
An ACS Survey of a Complete Sample of Luminous Infrared Galaxies in the Local Universe
Searching for the Progenitor of the Type Ib Supernova 2010O
Hi-PEEC, Hubble imaging Probe of Extreme Environments and Clusters
The Identification of Failed Supernovae

Reddish-Magenta screen: WFC3/UVIS F665N
Red: ACS/WFC F814W
Green: WFC3/UVIS F555W
Blue: ACS/WFC F435W+WFC3/UVIS F438W

North is up.


NGC 3256

NGC 3256

I’ve seen this one around a bit, and wanted to try it for myself. Not much more to say about it.

This is more information, links, etc. about it here: www.spacetelescope.org/images/heic1811a/

Saturation was increased. Some very slight color shifts were made to make cyans slightly bluer, and reds, oranges, and yellows slightly less saturated. Stars were masked from saturation increase. Some stars had moved around due to time-disparate datasets and proper motion. I moved many of them to match the F555W filter.

This image was created using data from the following proposals:
Clusters, Clumps, Dust and Gas in Extreme Star-Forming Galaxies
Star Cluster Formation and Evolution in Luminous Galaxy Mergers: A Joint JWST-HST Investigation
An ACS Survey of a Complete Sample of Luminous Infrared Galaxies in the Local Universe
Investigating the Impact of Merger Driven Shocks
ACS, NICMOS, and STIS Observations of Three Ongoing Mergers

Red: ACS/WFC F814W + WFC3/UVIS F665N
Green: ACS/WFC F555W
Blue: ACS/WFC F435W + WFC3/UVIS F275W + WFC3/UVIS F336W

North is 5.5° counter-clockwise from up.


Orion Mosaic

Orion Mosaic

Wasn’t sure how this would turn out when I downloaded the data. I wanted to do something a bit different from other Orion images, so I chose what I would consider a rather challenging set of filters from a large mosaic. The blue color represents Paschen β continuum, which is hydrogen α‘s near-infrared cousin. The reddish color represents the H2O/CH4 line, which is important to help separate out what astronomers were looking for in this dataset—brown dwarfs in this case.

There are a lot of cool details to see that otherwise would be obscured in this near-infrared view. The mountain-like formation south of the Trapezium stands out way better than a visible light image, and I enjoy the way the layers of gas appear like a gossamer fabric. There are even a few background galaxies visible.

If you looked at this image without saturation adjustments, you’d barely see any color at all. The filters are barely separated, and it shows in the combined image. So I had to increase saturation a lot. I was inspired by Bill’s color STIS image I did a little while ago for this. I wanted to take something that had almost no color, and see if I could get some beautiful colors out of it. In addition to the saturation boost, I set both clarity and texture sliders in Adobe Camera Raw all the way to 100 with stars masked. These really help bring out all the wispy details without adding too many artifacts.

So… I spent a *lot* of time cleaning up cosmic rays on this one. Please do download the original size, zoom in, etc.

Right now this is only a two-color image. I might come back later and add a third filter. I kind of like the simplicity of this, though.

Some portions of the image contain J band data from CTIO Blanco’s ISPI instrument. Notably, the upper left corner, and portions around the outer edges. I cloned some HST stars and put them in place of the CTIO stars so the whole image looks more cohesive. Color in those areas is approximated. CTIO/ISPI data can be found here: archive.stsci.edu/pub/hlsp/orion/images/ispi/

Data from the following proposal were used to create this image: The Orion Nebula Cluster as a Paradigm of Star Formation

Red-Orange: WFC3/IR F139M (H2O/CH4)
Blue-Cyan: WFC3/IR F130N (Paschen beta continuum)

North is 9.3° clockwise from up.


AM 0154-441

AM 0154-441

A spiral galaxy with an extra long arm outstretched. No apparent interacting partner nearby. Perhaps the interaction was with a very small, irregular galaxy that is already difficult to distinguish from the spiral. Or maybe this galaxy is just like this? Hm.

A widefield color view is available here:
legacysurvey.org/viewer?ra=29.1780&dec=-43.9798&l…

Establishing HST’s Low Redshift Archive of Interacting Systems

All Channels: ACS/WFC F606W

North is 110.15° counter-clockwise from up.


NGC 1409

NGC 1409

Two interacting galaxies, one a spiral with a tendril of dust seemingly being pulled out and wrapping around the other, an older, yellower, smoother galaxy.

h/t to William Keel, who was also the PI, for this rare color STIS picture.

This image is a reprocessed version of the following image, intended to offer some improvements to the quality:
hubblesite.org/contents/media/images/2001/02/1013-Image.h…

Data from the following proposal were used to create this image:
Subarcsecond Structure in Nearby AGNs

Note color is approximate for the outer left and right part of the image. The filters only overlapped the broad central area.

Red: STIS/CCD F28X50LPMIRVIS
Green: pseudo
Blue: STIS/CCD 50CCD MIRVIS

North is 4.66° counter-clockwise from up.


Arp 293

Arp 293

Tidal interaction and streams between two spiral galaxies. Very interesting to see the trail of stars apparently flow from one galaxy into the other. It seems a bit ambiguous in this view, but the deep, widefield view available from the Legacy Survey makes it look plausible.

The widefield color view is available here:
legacysurvey.org/viewer?ra=254.6166&dec=58.9466&l…

Establishing HST’s Low Redshift Archive of Interacting Systems

All Channels: ACS/WFC F606W

North is 0.41° clockwise from up.


Arp 251

Arp 251

A rather tight grouping of galaxies. Looks like some interaction or merging is about to occur.

A widefield color view is available here:
legacysurvey.org/viewer?ra=13.4515&dec=-13.8561&l…

Establishing HST’s Low Redshift Archive of Interacting Systems

All Channels: ACS/WFC F606W

North is 32.05° counter-clockwise from up.


Arp 231

Arp 231

Umbrellas and streams around an irregularly shaped galaxy. It has some of look of the makings of an elliptical galaxy. The veil of dust across the nucleus is a nice touch.

This one was a bit faint; I brightened it a bit and it looks noisier because of that. A partial shell to the west of the galaxy was not included in the Hubble image. Please check the widefield view to see that.

A widefield color view of the galaxy is available here:
legacysurvey.org/viewer?ra=10.8893&dec=-4.1172&la…

Establishing HST’s Low Redshift Archive of Interacting Systems

All Channels: ACS/WFC F606W

North is 2.68° clockwise from up.


Arp 278

Arp 278

Some galactic interactions result in more dramatic changes than others.

A widefield color view is available here:
legacysurvey.org/viewer?ra=334.8703&dec=29.3910&l…

Establishing HST’s Low Redshift Archive of Interacting Systems

All Channels: ACS/WFC F606W

North is 17.75° counter-clockwise from up.


Arp 86

Arp 86

A big spiral galaxy interacting with a smaller, irregular-looking galaxy. This pair is sitting near the edge of some faint Milky Way dust & gas, though it is hard to see in the Hubble image. Check the Legacy Survey widefield view to see it.

A widefield color view is available here: legacysurvey.org/viewer?ra=356.7681&dec=29.4835&l…

Establishing HST’s Low Redshift Archive of Interacting Systems

All Channels: ACS/WFC F606W

North is 1.99° clockwise from up.


There are more pictures at my Flickr Gallery (external link)