SASMIRALA is the SubArcSecond MidInfraRed Atlas of Local Agn, which is published and described in Asmus et al. (2014). It contains ~1000 images at wavelengths between 8 and 20µm of 253 local AGN (z<0.3). These were obtained in various programs between 2003 and 2013 with four 8-meter class telescopes (VLT/VISIR, Gemini/T-ReCs, Gemini/Michelle and Subaru/COMICS).
The data and individual object descriptions can be queried via the Virtual Observatory, e.g., through the web interface: https://dc.g-vo.org/sasmirala/q/im/form
Or by clicking on individual optical (DSS) images below:
Additional Information
These FITS images were generated with the IDL package MIRphot by extraction (and combination) of the sub-images from the chopped/nodded total images from COMICS, Michelle, T-ReCS and VISIR (see Asmus et al. 2014 for details).
The FITS images contain the central ~4 arcsec of each source centered on the (putative) nuclear position with North being up and East to the left. The WCS registration has been performed after extraction by using coordinates of the nucleus from other wavelengths (mostly 2MASS and NED). The uncertainty of these reference position is usually less than 1 arcsec. In addition, the imprecision of the assignment itself is ~1px ~ 0.1".
The FITS images are flux calibrated (unit is mJy) using the Gaussian 2D fits to the corresponding STD observation (where available, otherwise using the median conversion factor for the used instrument/filter settings). Therefore, correction factors have to be applied in case other flux measurement methods are applied to the images. The flux values given in the FITS headers should be regarded as approximate values. In particular for the instruments, VISIR and COMICS, they are not necessarily exactly equal to the values provided in the photometry results table, because many flux measurements were performed during the process of combining individual subimages (all in MIRphot), instead of in the final combined image, provided here. The used total images are available upon request. Note, however, that these are just the products of the observatory-delivered pipelines with default parameters.
