... Interesting. Over the last 4000 days (11 years), there has been one outburst of UZ Boo according to the AAVSO light curve generator. The quiescent...
No sign of an outburst 2008 05 10.35523 - the star is fainter than 16.0V - I suggest a possible misidentification with the nearby comparison star 132? Martin...
The RCB star RY SGR is starting to brighten after its recent fading episode. MAY 07.4118 12.21V (Martin Nicholson) MAY 12.6127 11.93V (Martin Nicholson) MAY...
This nova has shown a dramatic re-brightening over the last few days - 2454599.01012 11.52V (Martin Nicholson) 2454605.10309 10.50V (Martin Nicholson) ...
Just thought you might find this interesting. Electronic Telegram No. 1382 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION M.S. 18,...
Hello Congrats to Richard. According to the NEODyS Ephemerides of MP 2008 HJ at: http://newton.dm.unipi.it/cgi-bin/neodys/neoibo?objects:2008HJ;main ...
I detected SDSS 162718+120435 in outburst last night which is currently classified as a CV of unknown type making it a high priority target. I first detected...
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...
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