After a 'bright' minimum last November at around mag 13.5 W And is now having a 'bright' maximum: 7 June 2008 0024GMT D(1)V(1)F 7.3 15X70B John...
EnootnhoJ@...
Jun 7, 2008 9:16 am
1717
The ROP star RXJ1831.7+6511 is once again in outburst... Jun 07.035 13.8 Poyner This is the fifth outburst detected in this previously unobserved star...
I'll have a go at this using my Canon camera. I've already taken my first set of images, but have yet to measure them. Photometry with an electronic camera has...
Hello Colin and all, I too have a canon dslr and would very much like to extend down this route of photometry using dslr images. Firstly, may I ask how...
Dear Keith, I can only echo what Roger has already said. Des has certainly been the pioneer in this field, and has been very helpful in getting me started. ...
V CVn is undergoing a faint minimum and is currently off the lower end of the sequence: 9 June 2008 0001GMT K(2)L(1)V 8.7 15X70B Markarian 501 has...
EnootnhoJ@...
Jun 10, 2008 10:01 am
1724
... Hi Colin, I'm far from expert in these matters, but taking a dark frame after every exposure seems like a waste of time to me. Can't you use a 'library'...
Dear John, Will check that out. Decline definitely confirmed. Best wishes, Colin. _________________________________________________________________ News,...
Excellent Des ! I have a Canon 400D, and the 85mm f1.8 usm lens, also the 24-70 f2.8 L, and the 70-200mm f2.8 L lens, so I'm well equipt there. I'm completely...
Hi Colin Its easy to take an image with a DSLR and just evaluate it photo- metrically somehow. But if one wants to reach a higher photo- metric precision...
Hi Garry DSLRs are not cooled. The camera and chip temperature will adapt to the ambient temperature (that usually will change by several to a few ten degrees...
Hi Colin, Gary is quite correct for a "normal" CCD camera but I'm not sure of the procedure for a DSLR one. I should also have mentioned in my previous email...
Keith, With your camera and the 85 mm lens you will be able to get reasonable results down to magnitude 8 with undriven exposures of 5 seconds ( for RZ Cas )....
I would just like to take the opportunity to thank everyone for their input into photometry with electronic cameras. This has and will be very helpful. I feel...
I've posted my preliminary light-curves of T and AX Monocerotis in the files folder at http://tech.groups.yahoo.com/group/baavss-alert/files/ The T Mon...
For those interested in using DSLR Cameras for photometry the following paper may be useful. It formed part of the proceedings of the 26th Annual Conference (...
I have received a report that SW UMa may be in outburst on Jun 19.988 at around mag 10.6 visual (under poor conditions). Confirmation is requested. Thanks, ...
Following my previous e-mail on SW UMa, I can now confirm that it is indeed in outburst - having seen the DC image myself. Details are... Jun 19.998 10.6...
Hi Colin Your T Mon phase plot looks fine for a Cepheid. Unfortunatly the max is not well observed. But that is sometimes unavoidable if a var has a period...
Dear Wolfgang, Many thanks for your message and previous inputs. Yes, I confess the maximum was not secured well, but in fact I was clouded out each time. Just...
GX CAS is reported to be in outburst (http://home.mindspring.com/~mikesimonsen/cvnet/index.html) In the AAVSO database it is listed at 14.6 on JUL 01.0139 (but...
It might be a Mis ID. I was the <14.7 on Jly 1.06, and was confident I didn't see it. I was quite surprised when I saw it flagged as outburst in MNF, but...
Hello everyone, this is a typingerror from me. It must be <14.6. Apologies to all for the excitement. clear skies, Hubert ... [Non-text portions of this...
For those who are interested this is a belated reminder that V452 Cas is predicted to have a superoutburst during June or July, but obviously hasn't yet. There...
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