Lucifer Reduction Pipeline Cookbook

This is the cookbook of the pandora.lreducer, the LUCIFER reduction pipeline: the first version of pipeline used by the LBT spectroscopic reduction center. This is the first build block of the SIPGI software developed in the next year

SpectraPy

SpectraPy is an Astropy affiliated package, which collects algorithms and methods for data reduction of astronomical spectra obtained by a through slits spectrograph. The library is designed to be spectrograph independent. It comes with a set of already configured spectrographs, but it can be easily configured to reduce data of other instruments. Current implementation of SpectraPy is focused on the extraction of 2D spectra: it produces wavelength calibrated spectra, rectified for instrument distortion. The library can be used on both longslit (LS) and multi object spectrograph (MOS) data

SpectraPy Documentation

This is the SpectraPy manual. SpectraPy is an Astropy affiliated package, which collects algorithms and methods for data reduction of astronomical spectra obtained by a through slits spectrograph

Problem with MODS data in the blue channel

During the 2013 June Italian run, a MODS blue proposal (MOS) has been observed (ID 31) and reduced. The PI is interested in measuring absorption features of high redshift objects. These feature are expected to be observed in the bluest region of the spectra

Test on LUCIFER calibrator science frames

In order to find the best way to combine together telluric spectra and compute a sensitivity function, we observed different scientific frames of telluric stars. During this exploration we detected strange changes in spectra obtained from consecutive frame, this variability prevents us to compute a suitable sensitivity function, so we need to investigate better these frames

SIPGI: an interactive pipeline for spectroscopic data reduction

SIPGI is a spectroscopic pipeline for the data reduction of optical/near-infrared data acquired by slit-based spectrographs. SIPGI is a complete spectroscopic data reduction environment retaining the high level of flexibility and accuracy typical of the standard "by-hand" reduction methods but with a significantly higher level of efficiency. This is obtained exploiting three main concepts: 1) a built-in data organiser to classify the data, together with a graphical interface; 2) the instrument model (analytic description of the main calibration relations); 3) the design and flexibility of the reduction recipes: the number of tasks required to perform a complete reduction is minimised, preserving the possibility to verify the accuracy of the main stages of data-reduction process. The current version of SIPGI manages data from the MODS and LUCI spectrographs mounted at the Large Binocular Telescope (LBT) with the idea to extend SIPGI to support other through-slit spectrographs.Comment: 4 pages, 3 figure, to appear in proceedings of the Astronomical Data Analysis Software and Systems (ADASS) XXXII, virtual conference held 31 October - 4 November 202

Dwarf spheroidal satellites of M31: I. Variable stars and stellar populations in Andromeda XIX

We present B,V time-series photometry of Andromeda XIX (And XIX), the most extended (half-light radius of 6.2') of Andromeda's dwarf spheroidal companions, that we observed with the Large Binocular Cameras at the Large Binocular Telescope. We surveyed a 23'x 23' area centered on And XIX and present the deepest color magnitude diagram (CMD) ever obtained for this galaxy, reaching, at V~26.3 mag, about one magnitude below the horizontal branch (HB). The CMD shows a prominent and slightly widened red giant branch, along with a predominantly red HB, which, however, extends to the blue to significantly populate the classical instability strip. We have identified 39 pulsating variable stars, of which 31 are of RR Lyrae type and 8 are Anomalous Cepheids (ACs). Twelve of the RR Lyrae variables and 3 of the ACs are located within And XIX's half light radius. The average period of the fundamental mode RR Lyrae stars ( = 0.62 d, \sigma= 0.03 d) and the period-amplitude diagram qualify And XIX as an Oosterhoff-Intermediate system. From the average luminosity of the RR Lyrae stars ( = 25.34 mag, \sigma= 0.10 mag) we determine a distance modulus of (m-M)$_0$=$24.52\pm0.23$ mag in a scale where the distance to the Large Magellanic Cloud (LMC) is $18.5\pm0.1$ mag. The ACs follow a well defined Period-Wesenheit (PW) relation that appears to be in very good agreement with the PW relationship defined by the ACs in the LMC.Comment: accepted for publication in Ap

SIPGI Documentation

We present Sipgi, a spectroscopic pipeline to reduce optical/near-infrared data from slit-based spectrographs. Sipgi is a complete spectroscopic data reduction environment, which retains the high level of flexibility and accuracy typical of the standard ‘by-hand’ reduction methods but is characterized by a significantly higher level of efficiency. The current version of Sipgi manages data from the MODS and LUCI spectrographs mounted at the Large Binocular Telescope

PNGS: an API Ecosystem for Astronomical Applications Development

PNGS (Pandora Next Generation Software) is a collection of object oriented Application Programming Interfaces (APIs) implementing a broad set of functionalities and routines aimed at the manipulation of spectroscopic astronomical data. In particular a subset of GUI-oriented APIs are available. Based on the FASE (see Grosböl et al. (2012)) framework, PNGS offers a fully customizable software ecosystem which allows to develop applications spanning the whole spectroscopic data life cycle, from data classification to its organization on disk, analysis, reduction, visualization and archiving

Easylife: a Conceptual Framework for Semi-automatic Survey Management

Easylife is a conceptual framework aimed at the semi-automatic management of spectroscopic surveys. Conceived in 2012 (Garilli et al. 2012) as a tool to manage the VIPERS spectroscopic survey (Guzzo et al. 2014) and based on a prototype version of the FASE framework (Grosböl et al. 2012), it evolved into a survey-independent generalised framework following the MVC (Model-View-Controller) paradigm. Easylife has been deeply modified to exploit PNGS (Pandora Next Generation Software) APIs (Fumana et al. 2019) and FASE stable version, and is currently used to manage the ongoing VANDELS ESO public spectroscopic survey carried out using the VIMOS@VLT spectrograph