Here we are posting spectra of Type 1a supernova SN2014J in M82. Data from Alex Chassy, Jackelin Amorin, Ali Emami, and Dmitry Ryashchentsev, Dean Drumheller show changes in SN2014J expansion rate, measured from the Si II (Silicon) line, which has a standard wavelength 6355A.
(observed wavelength - standard wavelength) / standard wavelength * c
We observed the following expansion rates:
-13,700 km/s on 012414 UT
-9,900 km/s on 020514 UT
-8,600 km/s on 022014 UT
-8,054 km/s on 022114 UT
-7,100 km/s on 030814 UT
Spectra was taken thru our 140mm TEC refractor, and ST-10 CCD camera, with 200 line RO diffraction grating filter.
Dispersion ~16 Ang/Pixel. All processing with RSpec.
This image shows host galaxy M82 and SN2014J spectra (between yellow bars).
RSpec Screen shot of SN2014J spectra.
Supernova 2014J Photo
The astronomy world is observing Supernova 2014J in galaxy M82, about 12mly away. Discovered by Steve J. Fossey, SN2014J is brightening at this posting, and is currently ~ mag. 10. This image was taken by Special Projects student Alex Chassy on 1-22-14 with our AP130 refractor. CSM imaging students will do follow up observations and imaging….stay tuned.
SN2014J in M82 Alex Chassy, CSM Observatory
M42 Orion Nebula
Student Ali Emami took this image of M42, a diffuse nebula located in Orion's belt. Ali joined twelve, 300 second exposures taken thru a 130mm refractor and ST2000 CCD camera. Processing done with CCDStack.
M42 Ali Emami, CSM Observatory
Type G0 10th magnitude star BU Vul, is an Algol type (detached) eclipsing binary in the constellation Vulpecula. Using Maxim DL photometry tool, student Ali Emami created this light curve (Excel) using 60 data points from images taken 11-08-13 UT. The ephemeris generators at Rolling Hills Observatory and Mt. Suhora Astronomical Observatory were used for target selection.
BU Vul eclipsing binary -Ali Emami, CSM Observatory
M16 Eagle Nebula
M16 lies 7,000 ly away in the constellation Serpens, and is most famous for its Pillars of Creation region. Student Steve Byers created this image from 10, 300 second exposures taken 10-17-13 through our 20" RC telescope.
M16 Eagle Nebula Steve Byers, CSM Observatory
This small section (15.6 x 23.4 arcmin) of the Eastern Veil Nebula was imaged on 11-5-13 by Special Projects student Alex Chassy. The Veil lies ~1,400 ly away in the constellation Cygnus. Fifteen, 300 second exposures taken with our 20" RC and SBIG ST6303 camera, were combined to create this detailed image.
Veil Nebula Student Alex Chassy, CSM Observatory
This image of much anticipated Comet ISON, was taken with our 140mm refractor just before dawn, 11-16-13. ISON disintegrated as a result of it's Thanksgiving day encounter with the sun. Additional ISON information and updates.
Comet ISON -Dean Drumheller CSM Observatory
Quasar 3C 273 Red Shift
Using the program RSpec, CSM Observatory recently measured the redshift of distant quasar 3C 273 ~2.5 bly away in Virgo. (3C 273 is also a blazar) Data was taken thru our 140mm TEC f/7 refractor with ST-10 CCD camera the local night of 7-9-13. We used a low resolution Star Analyzer SA-100 diffraction grating and 4x300 second images were median combined, for analysis in RSpec.
H-alpha emission line was observed at 7589A (standard H-alpha = 6563A) to yield a redshift, z of .1563. (observed wavelength - standard wavelength / standard wavelength). 3C 273's redshift, z is listed as .1583. Thanks to RSpec developer Tom Field for help in establishing this procedure, to be used by students during Fall semester.
This image of edge on galaxy NGC 4565 in Coma Berenices was taken by Alex Chassy with our 20" telescope. 4565 lies 42 mly away, is magnitude 10.4, and contains more than 200 globular clusters. Larger image
NGC 4565 Alex Chassy, CSM Observatory
M3 RR Lyrae variables
This 2 image video of globular cluster M3 by student Peter Roomian, reveals about a dozen RR Lyrae type variable stars. Their pulsation periods range from ~5 to 15 hours. These short period variables make excellent standard candles for measuring distances out to 2.5 million light years. Peter imaged M3 with our AP130 refractor and ST2000 camera on loan from Dr. Ken Lum of San Mateo County Astronomical Society.
M51 Whirlpool Galaxy
Just a faint smudge in the eyepiece, M51 reveals great detail in long exposure CCD images. Special Projects student Ali Emami combined 24, five minute exposures of M51 taken with our 20" telescope, to create this image. The Whirlpool lies ~ 23 mly away in the constellation Canes Venatici. Larger Image
M51 Ali Emami, CSM Observatory
NASA Julian Date converter
CSM telescope/camera information here.
RSpec real time spectroscopy here