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This week's BAA Wednesday Webinar at 7pm (British Summer Time) is on spectroscopy and is being given by Hugh Allen. During the Q&A session at the end, Hugh will be joined Robin Leadbeater, David Boyd and myself. The title of the webinar is "From Kitchens to Comets - Hunting for molecules wi...

I am pleased to announce the BAA is holding a 1 day Spectroscopy Software Training Workshop on Saturday 24th August 2019 in Birmingham, UK. It will cover the 2 software packages ISIS and BASS Project. The ISIS session will be run by David Boyd and BASS Project by John Paraskeva (author of the softwa...

Thanks Andrew, Olivier, François and Robin. Andrew, Yes, the database accepts multiple FITS files for the different orders of an Echelle spectrograph as a single group. When uploading spectra there is a checkbox you can tick to indicate they are Echelle spectra. Then all the FITS files uploaded at t...

I am pleased to announce the launch of the BAA Spectroscopy Database. This is a project that I have been working on for the BAA over the past year. It enables 1D FITS format spectra which are compliant with the BeSS standard to be uploaded by users. Anyone may then view or download the spectra. I wo...

Hi Christian, I confirm when using the database button I can download and display spectra. It was only in the Response then Select a Reference Spectra buttons where I was having a problem. I was able to access the old "ELODIE - OHP" spectra by resaving them as ".fit" files in myb...

Hello Paolo, Robin and Christian, Maybe I misunderstood. I thought the 'mybase' would be in addition to the existing spectra including the old "ELODIE - OHP" spectra. Has the ability to access the "ELODIE - OHP" spectra been removed due to the problem discussed earlier in this th...

Hi Christian, I updated to ISIS V5.6 at the weekend and just tried processing my first spectrum. Everything was working fine until I tried selecting a reference star for the response correction. The old "Elodie - OHP" drop down list and select button were present, but the drop down list wa...

Hi James, I checked my AG Dra spectrum from 27th April and I also see a fairly sizeable blue shift of over 100km/s after heliocentric correction. I did a bit of investigation and according to SIMBAD the star has a high radial velocity of 147 km/s towards us which would explain the blue shift. http:/...

Here is a comparison of 3 high resolution H-alpha spectra covering about a month in time. I've labelled what appear to be some subtle changes in the profile. As the spectra are not flux calibrated I'm not sure how much confidence to give to the slight increase in H-alpha intensity and width. V696Mon...

I thought I'd add a further post to this topic as I've done a bit more fine tuning following offline discussions with Paul Luckas and François Cochard. First, just to emphasize that in my earlier posts my main issue was due to the grating holder pinching the grating. This was easily fixed by reducin...