spectro-aras.com

RE:"The result of my optimization work on the eShel spectrograph on this page (sorry in french): http://www.astrosurf.com/buil/asi6200mm/" I had Microsoft Edge make a English translation and output to .PDF for us "French" challenged eShel fans! http://astroimage.info/files/eShel%...

Here is my spectra, taken from Mt. Pinos, CA (2500m elevation) with the Alpy600 on 26July20 (All spectral species identified are speculative): http://astroimage.info/spectra/Comets/c_20200726_175_James%20R.%20Foster.png Here is 2D image of the processed spectra from Isis5.9.3: http://astroimage.info...

Looks good! Hope we can get custom gratings like Christian did in his prototype to work
with Shelyak Uvex; like the Thorlab 300 l/mm blazed at 1 micron!

Wonder if we can buy it without the calibration&guide module, since I already have an Alpy600 with these.

James

Here's my try at this rather bright extra galactic SN (Processed in IsisV5.93), shot from home on my CDK17 on 19May20 (in Red) and shot from Mt. Pinos, CA on 27May20 (purple) with my CC13 (33Cm aperture classical cassegrain): http://astroimage.info/spectra/_sn2020hvf_20200519&20200527.png I may ...

Nice work! I still have to work on my photometry of this object past 25Feb20.

I got some Alpy600 spectra of SN2020ftl, but need to process them latter...........almost no IR continuum seen as of 17Apr20 for SN2020ftl.

James

To: Pierre,

Re:"Bonjour James Exemple réalisé avec G300 500nm."

Magnifique pénétration dans les UV Pierre!

James

To: Joan, RE:"James, are possible that you be able to tell me the address for replacing the glass cover of ATIK CCD by C.Buil, please ? I'm interested in change it, but don't find the link." Here is what I used from the invoice I received from Thorlabs: "WG41010 Ø1" UVFS Broadban...

Here are some more Symbiotic, LPV, and the bright Quasar 3c 273 Visual(Alpy600+Atik414ex) and IR(Lisa-IR+Atik460ex) spectra: http://astroimage.info/spectra/Vis-Ir%20Spectra/betelgeuse_20200331_193_James%20R.%20Foster.png http://astroimage.info/spectra/Vis-Ir%20Spectra/denebola_20200331_348_James%20R...

Nice work Pierre!

See if you can go to 3500A (Christian has gone to almost 3300A!)....I can get to 3610A with my Alpy600 after replacing the glass cover of my Atik414ex with
a UV clear one...the grism and astigmatism limits me going much below 3600A.

James

To: Antonino,

Do you have any spectra below 4000A to show? So far your spectra looks great, but it would be nice to see
how far towards the UV you can go with your set-up.......

James