spectro-aras.com

Hello all,

My purpose was to evaluate the radial velocities of some astronomical targets with Alpy600 spectra and to compare them with Simbad data.

Hardware

Meade ACF 14" telescope + focal reducer 0.7
Alpy600 + Atik 460EX 1x1 binning

The targets

- M97 planetary nebula V 15.777 (6x600s exposure)
- NGC 4151 Seyfert 1 galaxy V 11.48 (6x600s exposure)
- 2XMM J121417.6+140313 quasar V 14.19 (6x600s exposure)

Spectra

M97 and NGC 4151
M97 and 2XMM J121417.6+140313 quasar
Results
Radial velocity V = 5 +- 133 km/s in agreement with Simbad data (0 km/s)
Radial velocity V = 906 +- 93 km/s in agreement with Simbad data (978 km/s)
Radial velocity V = 24470 +- 467 km/s in agreement with Simbad data (24253 km/s)

It's alwas pleasant and reassuring to see amateur measures in agreement with profesionnal data

Cheers,

Wonderful spectra Jacques. What are the critical steps you take to ensure the most accurate calibration of your Alpy spectra?
Cheers
Hugh

Thank you Hugh,

For getting the most accurate calibration with Isis, you just have to follow the very useful and clear Christian Buil web page
http://www.astrosurf.com/buil/isis/guid ... ration.htm
Take a look at the METHOD 3: Mixed method: star + ArNe lamp
It works very well.

Cheers,