Improved position of the new X-ray transient XTE J1637-498
Following the discovery of the new X-ray transient XTE J1637-498 (Atel #1699), we obtained a short (nearly 1 ksec) observation using the Swift/XRT in PC mode on...
Improvement of the Hubble diagram for QSO's leading towards g(O)
Using the predictions of the Lynden Bell/Hills model of the energy source of QSO's in which discrete packets of matter (e.g., stars) are converted into...
Improving Spatial Resolution by Removing Pixel Randomization in Chandra Data
In the pipeline processing of Chandra data, a uniform random blur, currently defaulted to +/- 0.5 pixels, is added to the sky coordinate of ACIS data. Its...
Improving the automatic wavelength calibration of EMIR spectroscopic data
EMIR, the near-infrared camera-spectrograph operating in the near-infrared (NIR) wavelengths 0.9-2.5μm, is being commissioned at the Nasmyth focus of the Gran...
Improving the radial velocity precision of NIRSPEC data
We present an approach to improve the radial velocity precision of NIRSPEC data (spectral resolution R = λ/Δλ ≈ 22,000) by using a self-calibration approach. We...
In savvy pursuit of Local Group blue massive stars
The important role of metallicity on massive star evolution and the combination of multi-object spectrographs and 10m class telescopes, have lead to numerous...