A rare sighting.....

[chiltonstar]

Spotted this briefy a couple of days back (a rare sighting in these parts!). It appeared briefly in the SE for a few minutes.

Modified Beck spectroscope, 2" spherical mirror to collimate beam, DSLR. Spectrum cut into pieces to preserve detail.

Chris

[Ponoobersie]

Hi Chris

Being a complete novice at this stuff what is this??

Cheers

Steve

[chiltonstar]

It's a spectrum of the Sun, showing the dark so-called Fraunhofer lines due to absorbtion of the continuum "black-body radiation" by various elements and ionised species. A bit of fun really on a gloomy day!

Chris

[Merlin66]

It's a spectrum of a G2V star....with additional Telluric/ Atmospheric absorbtion lines....Our Sun.

[Merlin66]

Chris,

Are you going to do the FULL spectrum mod to your DSLR??

It will allow you to get down to around 380nm - additonal Balmer series and the H&K lines....

[chiltonstar]

Chris,

Are you going to do the FULL spectrum mod to your DSLR??

It will allow you to get down to around 380nm - additonal Balmer series and the H&K lines....

Hmm....not to my D300, which I use for macro photography! I might find a 2nd hand older body though and do the necessary......

chris

[Ponoobersie]

Ah ok so in layman’s terms, its the Sun's heat and such fluctuating??

[Merlin66]

No....

It's a "picture" of the suns light from about 400nm (near the UV in the blue) and 700nm ( the far red part of the sunslight)

The spectroscope allows us to see the detail variation in the intensity of the sunlight, the dark bands are due to absorption of light in the Suns atmosphere caused by various chemicals ie Sodium, magnesium Hydrogen etc

The miracle of spectroscopy!

[jsandse]

Nice spectra you have there Chris.

Well done in getting it captured between all those darn clouds.

[Jack Martin]

Spotted this briefy a couple of days back (a rare sighting in these parts!). It appeared briefly in the SE for a few minutes.

Modified Beck spectroscope, 2" spherical mirror to collimate beam, DSLR. Spectrum cut into pieces to preserve detail.

Chris

Chris,

Well done, good work.

Regards,

Jack

[Jack Martin]

No....

It's a "picture" of the suns light from about 400nm (near the UV in the blue) and 700nm ( the far red part of the sunslight)

The spectroscope allows us to see the detail variation in the intensity of the sunlight, the dark bands are due to absorption of light in the Suns atmosphere caused by various chemicals ie Sodium, magnesium Hydrogen etc

The miracle of spectroscopy!

Merlin66,

Well said.

Regards,

Jack