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).


NGC 7496

NGC 7496

A beautiful spiral galaxy, flecked with blue clusters of young stars, and striped with intertwining dust.

I had to remove a rather significant red light scatter caused by a bright star just outside the field of view. Luckily it was almost completely contained in the red filter (it’s a very red star) so I could borrow some data from the green filter to fill in where the glint was too harsh to remove otherwise.

Data from the PHANGS-HST program were used to create this image.
archive.stsci.edu/proposal_search.php?mission=hst&id=...

More on PHANGS here:
phangs.stsci.edu/

Red: WFC3/UVIS F814W
Green: WFC3/UVIS F555W
Blue: WFC3/UVIS F438W+F336W+F275W

North is 20.00° clockwise from up.


Hickson Compact Group 40

Hickson Compact Group 40

Hubble turned 32 yesterday. This was the target chosen to celebrate that event. Tight groupings such as this are a relatively rare sight, and this one is so compact that there are multiple overlapping galaxies along our line of sight.

Anyway, just thought I’d share my version of it. I wanted to show it with a lighter background and a more gentle touch on the color saturation levels. There’s an H-alpha filter available. I chose not to use it.

You can see the official version over yonder.

Red: WFC3/UVIS F814W
Green: WFC3/UVIS F606W
Blue: WFC3/UVIS F475W

North is NOT up. It is 41.6° counter-clockwise from up.


Arp 143

Arp 143

Interacting galaxies NGC 2444 (top) and NGC 2445 putting on a show for us humans to enjoy and contemplate. I originally processed this image as an HST+a ground-based combo image to try and generate a meager color image. Needless to say the full Hubble version knocks the socks off the previous one.

Besides all the cool things going on here such as the unusual arcs around the center of the lower, star-forming galaxy, the upper, elliptical galaxy has some interesting subtle things going on, too. If you look very hard, or maybe it’s easy for you if you know what you’re looking for, you may notice a greenish hue around the nucleus of the elliptical.

Normally if I get a result like that I think it’s a problem with the processing, but in this case I believe this galaxy is actually colored like that due to having borrowed some shiny new blue stars from its collisional friend. The yellow older stars are mixing with the blues to give this slightly "off" appearance of the colors in the elliptical, which are typically all smoothly yellowish, being comprised entirely of an older bunch of cooler, long-lived stars.

I went ahead and posted this after STScI’s official release, because I didn’t want to accidentally "scoop" them and make their shiny new release old news… I very nearly did, but a chat with Julianne prevented that. I’m trying not to be a jerk, I swear. hubblesite.org/contents/media/images/2022/010/01F88FMDEP5…

Red overlay: WFC3/UVIS F665N
Red-Orange: ACS/WFC F814W
Green: ACS/WFC F606W
Blue: ACS/WFC F475W

North is NOT up. It is 21.99° counter-clockwise from up.


Galactic Center Infrared+Radio

Galactic Center Infrared+Radio

Spitzer, WISE, MeerKAT

The MeerKAT mosaic was released recently, giving me a chance to finally combine the Spitzer/WISE infrared mosaic with MeerKAT’s radio data. MeerKAT data are overlaid in white.

Annotations from arxiv.org/abs/2201.10541

White overlay: SARAO/MeerKAT (1.28 GHz)
Red: Spitzer/MIPS1 (24μm)
Green: WISE/W3 (12μm)
Blue: Spitzer/IRAC4 (8μm)

North is NOT up. It is around 60° counter-clockwise from up.


VV689 (Angel Wing)

VV689 (Angel Wing)

Another striking Zoo Gem that won a popular favorite vote for colliding galaxies. It’s easy to see how it became known as the Angel Wing system. With nearly complete bilateral symmetry, it’s hard not to see some kind of animal like an angel or bird wings.

Data from the following proposal were used to create this image:
Gems of the Galaxy Zoos

Data from the Legacy Survey were also used to colorize the image and smooth out the darker, extended, noisy parts of the HST data.

All Channels: HST/ACS/WFC F606W
Red: Legacy Survey z
Green: Legacy Survey g
Blue: Legacy Survey r

North is 22.35° clockwise from up.


Arp 282

Arp 282

A breathtakingly dimensional interaction between two galaxies. Our point of view combined with the tidal strands connecting the two galaxies provides us with a rarely discernable (among deep space imagery) feel of positionality, foreground, and background.

Data provided by the fruitfully formidable Proposal 15446.
Establishing HST’s Low Redshift Archive of Interacting Systems

Color obtained from the generally generous Legacy Survey.
LS data were also used to smooth out and enhance the noisier, darker parts of the image.

All channels: ACS/WFC F606W
Red: Legacy Survey z
Green: Legacy Survey r
Blue: Legacy Survey g

North is 18.41° counter-clockwise from up.


EMM Mars 2021-05-02

EMM Mars 2021-05-02

Mars as seen by the EMM on May 02, 2021. The archive for this mission is pretty great!
sdc.emiratesmarsmission.ae/

I used the following datasets to create this image:
emm_exi_l2a_20210502T045314_0047_xos2_f635_r_v02-02
emm_exi_l2a_20210502T045431_0047_xos2_f546_r_v02-02
emm_exi_l2a_20210502T045537_0047_xos2_f437_r_v02-02

It looks like filters which are pretty close to what the human eye sees were used by the instrument to capture the data.

Red: F635
Green: F546
Blue: F437


IC 2431

IC 2431

A probable triple interacting / merging group of galaxies putting on a spectacular show of star formation, tidal features, and thick, backlit dust. Imaged recently for the Galaxy Zoo snapshot program designed to capture noteworthy and unusual gems, IC 2431 was voted as the popular favorite among all other mergers in the Zoo Gems project.

Note that red light is placed in the green channel for this image so areas of H-alpha emission appear green instead of pink in this image… not to be confused with [O III] emission, which itself is usually presented as green or blue.

Data from the following proposal were used to create this image: Gems of the Galaxy Zoos

Additionally, PanSTARRS data were used to colorize the image and smooth out the dark areas a little.

All channels: HST ACS/WFC F606W
Red: PanSTARRS z
Green: PanSTARRS r
Blue: PanSTARRS g

North is 15.34° clockwise from up.


The Crepuscular Rays of IC 5063

The Crepuscular Rays of IC 5063

Revisiting our old friend IC 5063, this time with a bit of color, clearly revealing the emission line features emerging nearly perpendicular from the crepuscular rays. These features, in cyan, are most easily viewed zoomed in on the nucleus. They are thought to be formed by the actively accreting supermassive black hole in the center of the galaxy. In this case, the black hole may have a dark "donut" of dust around its equatorial axis, and the extremely bright light creates ionizing cones and jets of material out of the polar axis.

The processing here is not only extreme, but also a combination of data from two separate HST snapshot proposals, and the wondrous Legacy Survey DR9 release. I used my hacky Photoshop subtraction model to clearly reveal the center of the galaxy in the Hubble data, while the outer parts are partially filled using the LS DR9 imagery, more smoothly and confidently illustrating the galaxy’s outer tidal structures.

Hubble image coverage is incomplete; some sections contain only one filter/color.

Attribution: NASA / ESA / Aaron Barth / Julianne Dalcanton / DECaM Legacy Survey / Judy Schmidt

Data from the following proposals comprise this image:
An ACS Schedule Gap Imaging Survey of Nearby Active Galaxies
Establishing HST’s Low Redshift Archive of Interacting Systems

Hubble data:
Red: ACS/WFC F814W
Green: Pseudo
Blue: ACS/WFC F606W

Legacy Survey data:
Red: DECam z (near-infrared)
Green: DECam r (visible red)
Blue: DECam g (visible green)

The pixel scale for the original size PNG image is 0.03962" per pixel.

North is 3.29° clockwise from up.


AG Carinae

AG Carinae

Don’t have a lot of free time lately, but this year’s anniversary image seemed so nice and simple I decided to process my own version of it during some much needed breaks between tending to the baby’s needs. I went with a kind of fiery scheme for the narrowband data, and leaned toward blue for the medium/wideband data. You gotta figure with the central star being a blue supergiant that reflection nebula should be a little blue due to reflected starlight. Anyway, here’s a link to the Hubblesite press release, where there’s a lot of extra information as well as a kind of 3D tilting animation:
hubblesite.org/contents/news-releases/2021/news-2021-017

Red/orange screen: WFC3/UVIS F657N
Red: WFC3/UVIS F845M
Green: WFC3/UVIS F547M
Blue: WFC3/UVIS F275W

North is up.


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