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Start Over Content Level Research Capability Type Simple Image Access Protocol
161. 2MASS All-Sky Image Atlas
ID:
ivo://irsa.ipac/2MASS/Images/Allsky
Title:
2MASS All-Sky Image Atlas
Short Name:
2MASS_Allsky
Date:
01 Oct 2024
Publisher:
NASA/IPAC Infrared Science Archive
Description:
The 2MASS All-Sky Data Release contains Image and Catalog data covering 99.998% of the sky, derived from all northern and southern Survey observations. The All-Sky Release products include a Point Source Catalog (PSC), containing positions and photometry for 470,992,970 objects, an Extended Source Catalog (XSC), containing positions, photometry and basic shape information for 1,647,599 resolved sources, most of which are galaxies, and the Image Atlas, containing over 4,121,439 J, H and Ks FITS images covering the sky.
162. 2MASS All-Sky Quicklook Image Service
ID:
ivo://irsa.ipac/2MASS/Images/ASKY-QL
Title:
2MASS All-Sky Quicklook Image Service
Short Name:
2MASS QL
Date:
16 Mar 2017 01:00:00
Publisher:
NASA/IPAC Infrared Science Archive
Description:
This service provides access to and information about the 2MASS All-Sky Quicklook Images. The Quicklook Images delivered by this service are restored from lossy-compressed files in FITS format with full WCS information contained in the image headers. These images are suitable for position measurements, finding charts and visual inspection of the near-infrared sky.
163. 2MASS Calibration Image Atlas
ID:
ivo://irsa.ipac/2MASS/Images/Cal
Title:
2MASS Calibration Image Atlas
Short Name:
2MASS_Cal
Date:
01 Oct 2024
Publisher:
NASA/IPAC Infrared Science Archive
Description:
Photometric calibration for 2MASS was performed using observations of calibration fields made at regular intervals during each night of survey operations. Measurements of standard stars in the fields were used to derive the photometric zero point offsets as a function of time during each night. Atmospheric extinction coefficients were derived from 2MASS observations made over long periods. 2MASS calibration fields, or tiles, are 1° long in declination and approximately 8.5' wide in right ascension. There are 35 regular survey calibration fields distributed at approximately two hour intervals in right ascension near declinations of approximately -30°, 0° and +30°. An additional five calibration fields were defined in and around the Large and Small Magellanic Clouds to support the deep observation (6x) campaign towards the end of survey operations. Calibration scan Atlas Images, and Point and Extended Source Working Databases (Cal-PSWDB and Cal-XSWDB), analogous to those from the main survey, were produced from the calibration scan pipeline data reduction.
164. 2MASS Full Survey Image Atlas
ID:
ivo://irsa.ipac/2MASS/Images/Full
Title:
2MASS Full Survey Image Atlas
Short Name:
2MASS_Full
Date:
01 Oct 2024
Publisher:
NASA/IPAC Infrared Science Archive
Description:
Photometric calibration for 2MASS was performed using observations of calibration fields made at regular intervals during each night of survey operations. Measurements of standard stars in the fields were used to derive the photometric zero point offsets as a function of time during each night. Atmospheric extinction coefficients were derived from 2MASS observations made over long periods. 2MASS calibration fields, or tiles, are 1° long in declination and approximately 8.5' wide in right ascension. There are 35 regular survey calibration fields distributed at approximately two hour intervals in right ascension near declinations of approximately -30°, 0° and +30°. An additional five calibration fields were defined in and around the Large and Small Magellanic Clouds to support the deep observation (6x) campaign towards the end of survey operations. Calibration scan Atlas Images, and Point and Extended Source Working Databases (Cal-PSWDB and Cal-XSWDB), analogous to those from the main survey, were produced from the calibration scan pipeline data reduction.
165. 2MASS Large Galaxy Atlas
ID:
ivo://irsa.ipac/2MASS/Images/LGA
Title:
2MASS Large Galaxy Atlas
Short Name:
LGA
Date:
08 Nov 2023 01:00:00
Publisher:
NASA/IPAC Infrared Science Archive
Description:
The high sensitivity and angular resolution of the 2MASS Large Galaxy Atlas (LGA) images allows closer inspection of diverse stellar populations, large-scale structures such as spirals, bulges, warps and bars, star formation regions and evolution of galaxies. This image atlas represents the first uniform, all-sky, view of galaxies as seen in the near-infrared wavelength window that is most sensitive to the dominant mass component of galaxies.
166. 2MASS Long Exposure (6x) Full Survey Image Atlas
ID:
ivo://irsa.ipac/2MASS/Images/Sixxfull
Title:
2MASS Long Exposure (6x) Full Survey Image Atlas
Short Name:
2MASS_Sixxfull
Date:
01 Oct 2024
Publisher:
NASA/IPAC Infrared Science Archive
Description:
During the final months of 2MASS observatory operations, a campaign of targeted "long exposure" observations was carried out during times when no previously unscanned parts of the sky were available for the main survey. These observations used the same freeze-frame scanning technique employed for the survey, but with READ2-READ1 exposures six times longer than was used for normal survey observations (hence they are referred to as "6x" observations). The 2MASS 6x measurements were intended to probe ~1 magnitude deeper than the main survey in unconfused regions. Approximately 590 deg2 of sky distributed in 30 targeted regions were scanned at least once using the long exposures. Most of this area is concentrated in two large, comprehensive surveys of the Large and Small Magellanic Clouds, 383 deg2 and 127 deg2, respectively. Twenty-eight additional smaller fields were mapped in the 6x mode from both observatories, covering targets that include the Pleiades open cluster, galactic star formation complexes, M31, nearby galaxy clusters and the Lockman Hole.
167. 2MASS Long Exposure (6x) Image Atlas
ID:
ivo://irsa.ipac/2MASS/Images/Sixxcat
Title:
2MASS Long Exposure (6x) Image Atlas
Short Name:
2MASS_Sixxcat
Date:
01 Oct 2024
Publisher:
NASA/IPAC Infrared Science Archive
Description:
During the final months of 2MASS observatory operations, a campaign of targeted "long exposure" observations was carried out during times when no previously unscanned parts of the sky were available for the main survey. These observations used the same freeze-frame scanning technique employed for the survey, but with READ2-READ1 exposures six times longer than was used for normal survey observations (hence they are referred to as "6x" observations). The 2MASS 6x measurements were intended to probe ~1 magnitude deeper than the main survey in unconfused regions. Approximately 590 deg2 of sky distributed in 30 targeted regions were scanned at least once using the long exposures. Most of this area is concentrated in two large, comprehensive surveys of the Large and Small Magellanic Clouds, 383 deg2 and 127 deg2, respectively. Twenty-eight additional smaller fields were mapped in the 6x mode from both observatories, covering targets that include the Pleiades open cluster, galactic star formation complexes, M31, nearby galaxy clusters and the Lockman Hole.
168. Mass-loss of Evolved StarS
ID:
ivo://irsa.ipac/Herschel/Images/MESS
Title:
Mass-loss of Evolved StarS
Short Name:
MESS
Date:
27 Oct 2022 19:00:00
Publisher:
NASA/IPAC Infrared Science Archive
Description:
Herschel data from the "Mass-loss of Evolved StarS" (MESS) Guaranteed-Time Key Program are available here. IRSA is serving the MESS PACS imaging of 108 evolved stars. This is Herschel program KPGT_mgroen01_1. The sample of AGB stars has been selected to cover all chemical types (M-, S-, C-stars), variability types (irregular, semi-regular, Miras) and periods, and mass-loss rates. Stars have been selected to have high IRAS fluxes and low background levels.
169. 2MASS Six Degree Mosaics
ID:
ivo://irsa.ipac/2MASS/Images/Sixdeg
Title:
2MASS Six Degree Mosaics
Short Name:
2MASS_Sixdeg
Date:
01 Oct 2024
Publisher:
NASA/IPAC Infrared Science Archive
Description:
The Two Micron All Sky Survey (2MASS; Skrutskie et al. 2006, AJ 131, 1163) was a survey of the entire sky in three infrared wavebands: J (1.235 microns), H (1.662 microns), and KS (2.159 microns). The 2MASS All-Sky Data Release products include 4,121,439 Atlas Images (512 x 1024 pixels, 1 arcsec/pixel) in the three survey bands. For users wishing to visualize regions of the sky that are significantly larger than the Atlas Images, or that fall close to the edge of an Atlas Image, the NASA/IPAC Infrared Science Archive (IRSA) has created 6 x 6 degree 2MASS mosaics. The primary set consists of 1,734 mosaics with a 1 arcsecond pixel scale (the same pixel scale as the Atlas Images), resulting in individual files that are 1.9 Gb. Also available are 52 Mb mosaics that have been binned to a 6 arcsecond pixel scale.
170. 2MASS 6X Lockman Hole Ancillary Data Atlas
ID:
ivo://irsa.ipac/2MASS/Images/LH
Title:
2MASS 6X Lockman Hole Ancillary Data Atlas
Short Name:
LH
Date:
27 Oct 2022 19:00:00
Publisher:
NASA/IPAC Infrared Science Archive
Description:
These Lockman Hole (LH) data represent a preliminary analysis of the deep 2MASS observations of this region, and are not a product endorsed by the 2MASS project. These data are described in The Astronomical Journal, Volume 125, Issue 5, pp. 2521-2530 "A Deep 2MASS survey of the Lockman Hole" by Beichman et al.

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