spectro-aras.com

Très joli point de vue Christian ! En faisant la promotion de la spectroscopie ou de toute autre technique technique/scientifique, il existe un risque de mauvaise interprétation des objectifs. Hobby vs rigueur académique ou amateur vs techniques professionnelles en termes d'objectifs ; des passe-tem...

To: Robin,

Thanks for the helpful hints at successfully using the Alpy in 200 mode. Hope to configure mine after the winter clouds go away and do some test with my Alpy600 on the CDK at F/4.5.

James

Thanks for the "heads-up" Olivier and the great presentation from Robin.....ordered mine at the end of the Zoom meeting, and received the Alpy200 module 4 days latter! Can't wait to see how "dim" I can go with my CDK17 at F/4.5 with this!

To: Joan,

Nice work.....still need to get my eShel2 working before T CrB blows-up again this year!

James

I concurr! Now to make the eShel2 work!

James

Nice work! Inspires me to get my eShel2 up and running when all my bad weather
(snow/cold) is over with this spring.

James

To: All

Rho Cas looks like a nice target for eShel2 work at 4.2-6mag.

James

To: Joan, Sorry for the late reply. I was in the middle of selling and buying a house this May-June and now I'm more settled down. I don't have a quick answer, but I will take the eShel commissioning-up as soon as I construct my new location's roll-of-roof for my CDK17. My Sky is much darker (I'm 15...

To: Joan, Thanks for the careful explanation. RE"....you can note that one135mm. needs 2.52 times exposure than a 85mm. one to reach the same theoretical results...." Maybe this is why I show less light on orders below 55 than your custom made spectrograph. Yet in Christian's report, he wa...

Nice work Joan! Is there any reason you chose not to use the faster Canon 135 F/2 lens? Not that Nikon is bad, but I think Christian fully vetted the Cannon for good UV penetration with the ehel. Also, are you using a optical fiber in your latest data? I like the transmission you get with "dire...