On Sun, 1 Jun 2008 01:04:51 -0600 "James Edlin" <jedlin@...> wrote: Jim, ... It would be a nice idea to collect all your novae V2491 in a web page. In...
BM
bmauclaire@...
Jun 1, 2008 10:30 am
4731
Hi Stan, 1-In order to get rid of extreme values, you must median combine at least 3 frames! 2-Flats must be dark subtracted. 3- As you use SBIG, you have...
Hi Stan, The best way to simultaneously deal with hot/defective pixels and transients (cosmic rays, satellites, airplanes, meteors!?) AND get the best SNR out...
Thank you everyone who responded. I have a lot of good information to study and digest. Stan...
Stan Gorodenski
stanlep@...
Jun 1, 2008 5:49 pm
4735
On Sun, 1 Jun 2008 08:47:53 +0200 ... Hi, I took a couple of hours to made my new method available (use of smoothed line's edges to find wavelengths limits)...
BM
bmauclaire@...
Jun 1, 2008 6:10 pm
4736
Hi Robin, Thanks for pointing this out to me, I hadn't realized. Also I was rereading the description of what SDMask combine in MaxIm does and noticed my...
Thanks Benji. I have updated my spectroscopy page http://www.freewebs.com/ebenson/spectroscopy.htm with a picture of the nova star field, I estimate the nova...
Hi everyone, I have found two other spectra of this object, but they are not very similar to mine. They show strong absorption on the blue side of the Halpha...
Hi Eric, Hi Eric, Well these objects can evolve very rapidly and change significantly in few days. eg http://www.astrosurf.com/aras/nova_vul_2007/obs.htm Which...
Hello everyone, Again thanks for all the great discussion on EW from my posting about a week ago. It has been a helpful learning lesson. I did another run on...
James, Could you be saturating the pixel wells? Check the gain for your camera, look for a FITS header entry labeled EGAIN. The full well capacity for an ST10...
Hi Robin, Thanks for reminding me of that, the next spectra I take I will try to get more signal to be more conclusive. I found the expansion rate relation in...
Other possibilities to look for are saturation/truncation in either IRIS or Vspec I believe IRIS needs pixel values between -32768 and +32767 It has three ...
Thanks Eric, I will maybe try to do 5min exposures and see what happens when I get another run on it. This stuff sure requires one to pay close attention to...
Hi Robin, when I do my background sky subtraction and bin the data, I have been saving it to "pic" for use in V-Spec. Eric may be correct in that I may have...
James, It also occurred to me that the saturation could be due to binning (on the chip). I think you mentioned in another post that you were binning your...
On Tue, 3 Jun 2008 01:57:44 +0100 ... Hi all, I think it would much easier for end user that processing software respect initial picture's dynamic (8, 16, 16...
BM
bmauclaire@...
Jun 3, 2008 7:39 pm
4748
Hello, If anyone on this list can acquire a spectrum of the GRB 080603B: RA(J2000) = 11h 46m 07s Dec(J2000) = +68d 04' 33" R~17.6 and stays at this value for...
Alain Klotz
alain.klotz@...
Jun 3, 2008 10:00 pm
4749
Hi Alain, 00:20 UT I am at the position given but I cannot see anything in a 2 min exposure. I guess it must have faded (a spectrum was probably impossible...
Hello, Congratulations Robin to your try. At 00h20 UT the afterglow was at R=18.2. The N.O.T. spectrum indicates a redshift of 2.69. I attached an image of the...
Alain Klotz
alain.klotz@...
Jun 4, 2008 12:58 am
4751
Hi Alain, I have just checked a stack of unfiltered images (total exposure 30 min) and I can see it now, certainly not bright enough to try for a spectrum...
Hi Eric, I suspect you may be correct. I looked at my data alittle closer and found the peak pixel values over the Ha line to be near 60K, so I'm sure I am...
Hello Alain, Thanks for the notice! Unfortunately my scopes are all down at the present time as we are installing new APU's to our remote site. These notices...
Observations of Delta Scorpius carried out the May 21 and June 06 shows significant evolution of Halpha and HeI lines relative to continuum level. See attached...
Hi, Bonjour The Be star Database a the Observatoire de Paris Meudon now contains above 600 spectra made by amateurs !! The total number of spectra in the...
... That's an error/typo. They have quite a few of them on their website and don't bother to correct them for years. ... I believe that the ST10 gain does not...
Hi, Bonjour The Be star Database a the Observatoire de Paris Meudon now contains above 600 spectra made by amateurs !! The total number of spectra in the...
"Christian Buil" <christian.buil@...> schrieb: Observations of Delta Scorpius carried out the May 21 and June 06 shows significant evolution of Halpha...
