spectro-aras.com

To: Peter,

Nice python app! I'm just learning the program for a seperate project, flare star monitoring and computing total flux energy when the
star flares up.

I dont have a UVEX (yet!) but when I use my Alpy600 or LISA-IR spectrascopes, I always try to set the continuum right in the center
of ...

To: Olivier,

RE:"At Shelyak, we've tested a wide range of lenses, and only the 135mm Samyang lens gives good results."

According to the Christian's write-up, the Samyang lens only work to about 4000A; anything shorter is absorbed...plastic
internal lens? He uses the excellent (but no longer ...

To: Hugo,

Yes I used my IP to upload these images in firefox.

James

To: Olivier,

Thanks for the images! Yes I'm not using the spacer but will try that out.

To: Bernard,

Do not understand why you cant see my images.....I can see them on this forum even when not logged-in.

Thanks for all the feedback!

James

To: Group,

I've finally got a replacement Cmos camera for use on the eShel; saving the FF Zwo ASI6200mm for other astro imaging.
I'm using a Zwo ASI2600mm cmos camera and have roughly focused it with the 135mm Canon camera at F/2 ontop of the
Shelyak eShel. Here is an image from the camera using ...

To: Francois,

Thanks for these links! Hope to attend the next one...

James

Here is my composite spectrum of C/2023 A3 (Tsuchinshan-ATLAS), in Visual & near-IR. Used a classical cassegrain 33cm aperture reflector at F/7.5 to shot the comet with Alpy600 (visual) & LISA (IR) spectroscopes on 21Oct2024 and 23Oct2024 respectively. Most of the indicates emission/absorption ...

Here is a LhiresIII spectrum of WR140 centered near the CIV line, shot on 12Sep2024; R=10,729:


James

Here is my recent Alpy600 and LhiresIII(2400 ln/mm grat) spectra as well as some photometry I'm submitting to AASVO.
Transformed Mag.'s:
http://astroimage.info/files/5_V1687%20Cyg(WR140)PhotoM.jpg

Alpy600 Spectra:
http://astroimage.info/files/6_v1687cyg_20240826_364_James%20R.%20Foster.png ...

Here is some recent IR development with Nova V0615 Vul, taken with my LISA configured for IR:
(NOTE: Line identifications mostly speculative)


James