Near-IR spectra...

[Christian Buil]

A spectra collection taken in infrared CCD range by using a special version of LISA spectrograph (a setup from Shelyak). Small 200 mm f/5 Newton telescope.

The symbiotic star V694 Mon (note Ca II line in emission):



Red from blue stars sequence:



















(note the HI Pashen series)

And some Be stars:















Christian

[Olivier Thizy]

Christian,


Excellent results!


For those with LISA spectrograph (ok, a little advertisement... sorry!), you can easily convert the LISA into a near Infra-Red LISA with our kit:
http://www.shelyak.com/produit.php?id_p ... =12&lang=2

The change is reversible and a near infra-red LISA can be converted back to a visible LISA.

A new spectral domain to study!


Cordialement,
Olivier Thizy
Vous ne verrez plus des étoiles comme avant !
http://www.shelyak.com/en/

[Andrew Smith]

Christian,


Excellent results!


For those with LISA spectrograph (ok, a little advertisement... sorry!), you can easily convert the LISA into a near Infra-Red LISA with our kit:
http://www.shelyak.com/produit.php?id_p ... =12&lang=2

The change is reversible and a near infra-red LISA can be converted back to a visible LISA.

A new spectral domain to study!


Cordialement,
Olivier Thizy
Vous ne verrez plus des étoiles comme avant !
http://www.shelyak.com/en/

OK Olvier, but what is the difference between the set up used and the IR kit? It is not fair on potential customers not to make this clear at least at the results level - spectral range, resolution?

Regards Andrew

[Christian Buil]

Here a spectrum of Messier 42 nebulae (a classic !):





Christian

[Olivier Thizy]

Andrew,


Visible LISA has a spectral range 400-700nm while the LISA near Infra-Red has a spectral range 650nm-1µm.

The near infra-red kit is actually made of:
-a grating optimized for near infra-red (the visible one is blazed at 500nm)
-a filter to remove the second order
-a mechanical part to tilt the camera at a proper angle


Cordialement,
Olivier Thizy
Vous ne verrez plus des étoiles comme avant !
http://www.shelyak.com/en/

[Olivier GARDE]

Est il facile de passer d'une configuration LISA "Classique" à la configuration "LISA IR" sans que l'on soit obligé de procéder à divers réglages ?

[Olivier Thizy]

Olivier,


passer du mode Visible au mode proche Infra-Rouge (ou inversement) est facile mais demande du soin et d'ouvrir complètement le spectroscope LISA; c'est à faire plutôt de jour et sur table propre... Je dirais donc que c'est facile mais que ça prend du temps et du soin.

Switching from Visible to near Infra-Red (and reverse) is easy but require to be cautious and to completely open the LISA spectroscope; it should be done if possible during daylight and on a clean bench... in summary, it's easy but require time & caution.



Cordialement,
Olivier Thizy
Vous ne verrez plus des étoiles comme avant !
http://www.shelyak.com/en/