MAST - Mikulski Archive for Space Telescopes
@mast-news.bsky.social
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MAST archives UV/optical/IR data from NASA missions, contributed science products, and analysis tools. https://archive.stsci.edu This account is primarily to inform our users of updates. For the general public, follow https://bsky.app/profile/stsci.edu
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mast-news.bsky.social
HLSP Update: TICA = quick-look, calibrated TESS full frame images from Sector 97, Orbit 2, Part A are now available at MAST. archive.stsci.edu/hlsp/tica
A sample TICA full frame image, rectangular in shape, grey background with white representing stars and scatter light throughout the entire image.
mast-news.bsky.social
HLSP Update: QLP calibrated light curves from TESS full frame images for Sector 96 are now available at MAST. This Sector adds 419,834 targets derived from 200 second cadence FFIs. archive.stsci.edu/hlsp/qlp 🔭
Sky projected plot of the Sectors 56-84 footprints on the sky. Each footprint is shaded a different color to stand out compared to others. Right ascension is along the x-axis and declination is along the y-axis. The biggest gaps in coverage occur approximately between -20 degrees and +50 degrees declination along right ascension 10 to 20 hours, and from -60 to +20 degrees declination along right ascension 0 to 7 hours.
mast-news.bsky.social
Feature update: we've added album previews to our JWST Search interface! Also included with our update is a Light/Dark mode toggle. archive.stsci.edu/contents/new...
The JWST image preview feature; seven images are displayed in a grid.
mast-news.bsky.social
HLSP Update: QLP calibrated light curves from TESS full frame images for Sector 95 are now available at MAST. This Sector adds 497,114 targets derived from 200 second cadence FFIs. archive.stsci.edu/hlsp/qlp 🔭
Sky projected plot of the Sectors 56-84 footprints on the sky. Each footprint is shaded a different color to stand out compared to others. Right ascension is along the x-axis and declination is along the y-axis. The biggest gaps in coverage occur approximately between -20 degrees and +50 degrees declination along right ascension 10 to 20 hours, and from -60 to +20 degrees declination along right ascension 0 to 7 hours.
mast-news.bsky.social
HLSP Update: TICA = quick-look, calibrated TESS full frame images from Sector 97, Orbit 1, Part B are now available at MAST. archive.stsci.edu/hlsp/tica
A sample TICA full frame image, rectangular in shape, grey background with white representing stars and scatter light throughout the entire image.
mast-news.bsky.social
Thank you! Previews for HST are on our to-do list for the next month or two, so yes, coming soon!
mast-news.bsky.social
New HLSP: LACOS = Layman-Alpha and Continuum Origins Survey! Data from HST of 42 low redshift compact, star forming galaxies. Reduced images of each filter, Lyman-alpha line and continuum maps, general properties catalog, and a preview RGB composite for each target. 🔭 archive.stsci.edu/hlsp/lacos
This figure describes Optical RGB composites of LACOS galaxies using WFC3/UVIS images. Red corresponds to the F850LP filter, green to the F547M filter and blue to the F438W filter. Images in each filter are normalized to their own maximum to highlight structural differences across different bands.
mast-news.bsky.social
HLSP Update: TICA = quick-look, calibrated TESS full frame images from Sector 96, Orbit 2, Part B are now available at MAST. archive.stsci.edu/hlsp/tica
Sky projected plot of the Sectors 56-84 footprints on the sky. Each footprint is shaded a different color to stand out compared to others. Right ascension is along the x-axis and declination is along the y-axis. The biggest gaps in coverage occur approximately between -20 degrees and +50 degrees declination along right ascension 10 to 20 hours, and from -60 to +20 degrees declination along right ascension 0 to 7 hours.
mast-news.bsky.social
New HLSP: First results from the Rocky Worlds DDT program are now available at MAST! This release includes calibrated light curves, model fits, preliminary eclipse depth estimation, and auxiliary data for GJ 3929 b. archive.stsci.edu/hlsp/rocky-w... #HLSP #RockyWorlds #JWST #HST #Exoplanets #MAST 🔭
An example fit to a JWST/MIRI F1500W eclipse observation of GJ 3929b collected by the Rocky Worlds DDT Program.
mast-news.bsky.social
HLSP Update: OPAL adds HST observations of Neptune Cycle 32 from August 2025, now available at MAST. archive.stsci.edu/hlsp/opal
An image collage showing HST observations of, from left to right, Jupiter, Uranus, Saturn, Neptune. The images are in color: Jupiter and Saturn in hues of orange, yellow, and brown, while Neptune and Uranus are shades of blue. The images are highly detailed, such that structures in their atmospheres like cloud bands are clearly visible.
mast-news.bsky.social
New HLSP: New optical high-resolution images and point source photometry for unusual, disturbed, and/or interacting galaxies from the Arp (1966) and Arp & Madore (1987) catalogs, from an HST SNAP program (PI @dalcantonjd.bsky.social), are now available at MAST. archive.stsci.edu/hlsp/hags 🔭
A sample black-and-white negative image showing two disturbed spiral galaxies, with prominent star forming regions and dust lanes, for the system AM1914-603 from the Arp & Madore (1987) catalog. The image was originally taken in the F606W filter with the Advanced Camera for Surveys on the Hubble Space Telescope.
mast-news.bsky.social
QLP calibrated light curves from TESS full frame images for Sector 94 are now available at MAST. This Sector adds 720,971 targets derived from 200 second cadence FFIs. 🔭 archive.stsci.edu/hlsp/qlp
Sky projected plot of the Sectors 56-84 footprints on the sky. Each footprint is shaded a different color to stand out compared to others. Right ascension is along the x-axis and declination is along the y-axis. The biggest gaps in coverage occur approximately between -20 degrees and +50 degrees declination along right ascension 10 to 20 hours, and from -60 to +20 degrees declination along right ascension 0 to 7 hours.
mast-news.bsky.social
HLSP Update: TICA = quick-look, calibrated TESS full frame images from Sector 96, Orbit 2, Part A are now available at MAST. archive.stsci.edu/hlsp/tica
A sample TICA full frame image, rectangular in shape, grey background with white representing stars and scatter light throughout the entire image.
mast-news.bsky.social
New HLSP: LAURELIN is a collection of resolved stellar photometry catalogs for 36 nearby ultra-faint dwarf galaxies. archive.stsci.edu/hlsp/laurelin
Color-magnitude diagrams of the 36 ultra-faint dwarf galaxies represented in the first data release of LAURELIN. The effective HST V absolute magnitude of the galaxies range from -6.5 to +0.7.
mast-news.bsky.social
Hello Universe presents a new demo notebook that uses convolutional neural networks to estimate stellar rotation periods from TESS light curves. Explore Machine Learning with MAST data sets with Hello Universe! archive.stsci.edu/hello-univer...
This image represents the wavelet power spectrum of a stellar light curve. It has a black field with a wispy, horizontal white band spanning the full width. There is also a red, horizontal, dotted line, which also spans the image width, just above the white band.
mast-news.bsky.social
HLSP Update: TICA = quick-look, calibrated TESS full frame images from Sector 95, Orbit 2, Part B are now available at MAST. archive.stsci.edu/hlsp/tica
A sample TICA full frame image, rectangular in shape, grey background with white representing stars and scatter light throughout the entire image.
mast-news.bsky.social
New HLSP: OWLS, a long-term spectroscopic stellar activity monitoring program with the ARC 3.5 m Telescope at Apache Point Observatory led by @brettmorr.is . OWLS produces time series Ca II H & K emission measurements to probe activity levels + search for activity cycles. archive.stsci.edu/hlsp/owls
Time series of S-indices for five targets with a range of spectral types.  The top three panels show data from 1965 to 2024 for HD 78366 (F dwarf), HD 81809 (G dwarf), and the K-dwarf HD 26965, including historic MWO data (timespan in yellow) and newly obtained OWLS measurements (timespan in blue). We plot a curve on the G and K stars with three Lomb-Scargle (sinusoidal) terms, with periods ranging from 8 to 15 years. The OWLS S-indices from 2020-2024 for two M~dwarfs GJ 388 B and GJ 494 are shown in the bottom row.
mast-news.bsky.social
HLSP Update: TICA = quick-look, calibrated TESS full frame images from Sector 95, Orbit 2, Part A are now available at MAST. archive.stsci.edu/hlsp/tica
A sample TICA full frame image, rectangular in shape, grey background with white representing stars and scatter light throughout the entire image.
mast-news.bsky.social
HLSP Update: QLP calibrated light curves from TESS full frame images for Sector 93 are now available at MAST. This Sector adds 2,185,816 targets derived from 200 second cadence FFIs. archive.stsci.edu/hlsp/qlp
Sky projected plot of the Sectors 56-84 footprints on the sky. Each footprint is shaded a different color to stand out compared to others. Right ascension is along the x-axis and declination is along the y-axis. The biggest gaps in coverage occur approximately between -20 degrees and +50 degrees declination along right ascension 10 to 20 hours, and from -60 to +20 degrees declination along right ascension 0 to 7 hours.
mast-news.bsky.social
HLSP Update: TICA = quick-look, calibrated TESS full frame images from Sector 95, Orbit 1, Part B are now available at MAST. archive.stsci.edu/hlsp/tica
A sample TICA full frame image, rectangular in shape, grey background with white representing stars and scatter light throughout the entire image.
mast-news.bsky.social
HLSP Update: TICA = quick-look, calibrated TESS full frame images from Sector 95, Orbit 1, Part A are now available at MAST. archive.stsci.edu/hlsp/tica
A sample TICA full frame image, rectangular in shape, grey background with white representing stars and scatter light throughout the entire image.
mast-news.bsky.social
HLSP Update: TESS-SPOC calibrated light curves and target pixel files from TESS full frame images for Sector 77 are now available at MAST. This Sector adds 160,000 targets derived from 200 second cadence FFIs. archive.stsci.edu/hlsp/tess-spoc
A histogram showing the number of targets per 0.25 magnitude bin from three different categories: two-minute targets (in dark blue), FFI-included targets (in light blue) and FFI field star targets (in red). The two-minute targets are primarily between TESS magnitude 8-12 and the maximum bin count is approximately 1000.  The FFI-include targets have a more strongly peaked distribution centered on TESS magnitude 11 and at the maximum bin count is approximately 6500.  The FFI field star targets also follow a strongly-peaked distribution centered at TESS magnitude 12.5 and have a maximum bin count size of almost 16000.
mast-news.bsky.social
HLSP Update: OPAL adds HST observations of Neptune Cycle 31 from June 2025, now available at MAST. archive.stsci.edu/hlsp/opal
An animation showing the projected surfaces of Jupiter, Saturn, Uranus, and Neptune. Maps from two different "rotations" are shown for each planet, so that small motions of cloud features between each rotation can be seen.
mast-news.bsky.social
HLSP Update: TICA = quick-look, calibrated TESS full frame images from Sector 94, Orbit 2, Part B are now available at MAST. archive.stsci.edu/hlsp/tica
A sample TICA full frame image, rectangular in shape, grey background with white representing stars and scatter light throughout the entire image.
mast-news.bsky.social
HLSP Update: TICA = quick-look, calibrated TESS full frame images from Sector 94, Orbit 2, Part A are now available at MAST. archive.stsci.edu/hlsp/tica
A sample TICA full frame image, rectangular in shape, grey background with white representing stars and scatter light throughout the entire image.