We are excited to announce the launch of our new forums! You can access it forums.aavso.org. For questions, please see our blog post. The forums at aavso.org/forum have become read-only.
Announcement: New Applications
We are excited to announce the launch of our new applications! We're opening up early access to our new applications for searching, downloading, and submitting photometric observations. You can now access these applications through these links:
We ask for your feedback in order to help us improve these applications. Please send feedback for the applications above to feedback@aavso.org. Note: please avoid duplicating submissions across the two submit applications.
While we wait for James to reply it is worth mentioning that the details of James's spectrum (and any other in the database) can be found by interogating the BAA database here
The spectra can also be downloaded from the database in fits format. The use of BeSS standard means that all the relevant data on the observation are also contained in the fits header. Below is a printout of the header for James' spectrum. (I have truncated the observatory coordinates for privacy)
One correction on the fits header...this was taken with a 33cm apeture classical cassegrain working at F/7.5 with LISA. The usual header is accurate with the CDK17, but whenever I go to the "field" I use the 33cm classical cassegrain for spectroscopy. I made a note of this in the BAA spectra database.
To: Bernard,
Here is a spectra I took, stored at the BAA Spectroscopy database:
https://britastro.org/specdb/data_graph.php?obs_id=1464&obs_validated=&obs_observer_id=FJQ&r_c=1&f_c=1&o_comment=Tabbys+Star+named+after+Astronomer+Tabetha+S.+Boyajian&plot=Plot
James
Hello James
I am interested in the particulars of your spectra. Its very nice. What aperture, spectragraph/sa200?, exposure, stacking?
Thanks
Gary
Hi Gary,
While we wait for James to reply it is worth mentioning that the details of James's spectrum (and any other in the database) can be found by interogating the BAA database here
https://britastro.org/specdb/
The spectra can also be downloaded from the database in fits format. The use of BeSS standard means that all the relevant data on the observation are also contained in the fits header. Below is a printout of the header for James' spectrum. (I have truncated the observatory coordinates for privacy)
Cheers
Robin
SIMPLE T / file does conform to FITS standard
BITPIX -32 /8 unsigned int, 16 & 32 int, -32 & -64 real
NAXIS 1 / number of data axes
NAXIS1 4005 /fastest changing axis
CRVAL1 3890.75344925
CDELT1 0.87635195
VERSION 'ISIS V5.8.0' / Software version
OBJNAME 'KIC 8462852'
DATE-OBS '2017-06-23T06:55:32'
EXPTIME 1885
EXPTIME2 '10 x 180 s' / Exposure decomposition
BSS_INST 'CDK17 LISA ATIK460EX'
BSS_SITE 'Mt. Pinos, Nordic Base, CA'
BSS_ITRP 762
OBSERVER 'James R. Foster'
CUNIT1 'Angstrom'
CTYPE1 'Wavelength'
Q_CAL '0 ' / Quality flag 4-excellent
CRPIX1 1
BSS_VHEL 0
BSS_COSM 'Removed'
BSS_TELL 'None'
BSS_NORM 'None'
SPE_RPOW 762 / Spectral resolution power
JD-OBS 2457927.7886 / JD start observation
JD-MID 2457927.7995 / JD mid observation
JD-HEL 0 / JD heliocentric mid-obs
GEO_LONG -119 / Obs. geographic longitude
GEO_LAT 34 / Obs. geographic latitude
GEO_ELEV 2500 / Obs. geographic elevation
DATE-END '2017-06-23T07:26:57'
BAS_MJD 2457927.79946759 / BASS Project mid-exposure Julian Date
RA 301.564397083333
DEC 44.456886944241
EQUINOX 2000
RSDECSYS 'FK5'
BSS_STYP 'F3V'
BSS_VSIN 0
BSS_VMAG 12.01
BZERO 0.000000000 /physical = BZERO + BSCALE*array_value
SWMODIFY 'BASS Project 0.1.9.7'
One correction on the fits header...this was taken with a 33cm apeture classical cassegrain working at F/7.5 with LISA. The usual header is accurate with the CDK17, but whenever I go to the "field" I use the 33cm classical cassegrain for spectroscopy. I made a note of this in the BAA spectra database.